diff --git a/.github/helper/.flake8_strict b/.github/helper/.flake8_strict
index c17871d..4c7f5f8 100644
--- a/.github/helper/.flake8_strict
+++ b/.github/helper/.flake8_strict
@@ -44,7 +44,6 @@
     E303,
     E305,
     E306,
-    E401,
     E402,
     E501,
     E502,
@@ -52,7 +51,6 @@
     E702,
     E703,
     E741,
-    F401,
     F403,
     W191,
     W291,
diff --git a/.github/helper/semgrep_rules/frappe_correctness.py b/.github/helper/semgrep_rules/frappe_correctness.py
index 745e646..83d4acf 100644
--- a/.github/helper/semgrep_rules/frappe_correctness.py
+++ b/.github/helper/semgrep_rules/frappe_correctness.py
@@ -1,5 +1,5 @@
 import frappe
-from frappe import _, flt
+from frappe import _
 
 from frappe.model.document import Document
 
diff --git a/.github/workflows/linters.yml b/.github/workflows/linters.yml
index c236339..16e490a 100644
--- a/.github/workflows/linters.yml
+++ b/.github/workflows/linters.yml
@@ -24,4 +24,4 @@
           python-version: 3.8
 
       - name: Install and Run Pre-commit
-        uses: pre-commit/action@v2.0.0
+        uses: pre-commit/action@v2.0.3
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index df15b68..2b3a471 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -23,6 +23,12 @@
         args: ['--config', '.github/helper/.flake8_strict']
         exclude: ".*setup.py$"
 
+  - repo: https://github.com/timothycrosley/isort
+    rev: 5.9.1
+    hooks:
+      - id: isort
+        exclude: ".*setup.py$"
+
 ci:
     autoupdate_schedule: weekly
     skip: []
diff --git a/erpnext/__init__.py b/erpnext/__init__.py
index 17d6505..4521827 100644
--- a/erpnext/__init__.py
+++ b/erpnext/__init__.py
@@ -1,9 +1,11 @@
 # -*- coding: utf-8 -*-
 from __future__ import unicode_literals
+
 import inspect
+
 import frappe
+
 from erpnext.hooks import regional_overrides
-from frappe.utils import getdate
 
 __version__ = '13.9.0'
 
diff --git a/erpnext/accounts/custom/address.py b/erpnext/accounts/custom/address.py
index 628b713..a6d08d8 100644
--- a/erpnext/accounts/custom/address.py
+++ b/erpnext/accounts/custom/address.py
@@ -1,7 +1,11 @@
 import frappe
 from frappe import _
-from frappe.contacts.doctype.address.address import Address
-from frappe.contacts.doctype.address.address import get_address_templates, get_address_display
+from frappe.contacts.doctype.address.address import (
+	Address,
+	get_address_display,
+	get_address_templates,
+)
+
 
 class ERPNextAddress(Address):
 	def validate(self):
diff --git a/erpnext/accounts/dashboard_chart_source/account_balance_timeline/account_balance_timeline.py b/erpnext/accounts/dashboard_chart_source/account_balance_timeline/account_balance_timeline.py
index 85f54f9..5eb8577 100644
--- a/erpnext/accounts/dashboard_chart_source/account_balance_timeline/account_balance_timeline.py
+++ b/erpnext/accounts/dashboard_chart_source/account_balance_timeline/account_balance_timeline.py
@@ -2,14 +2,15 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, json
+
+import frappe
 from frappe import _
-from frappe.utils import add_to_date, date_diff, getdate, nowdate, get_last_day, formatdate, get_link_to_form
-from erpnext.accounts.report.general_ledger.general_ledger import execute
+from frappe.utils import add_to_date, formatdate, get_link_to_form, getdate, nowdate
 from frappe.utils.dashboard import cache_source
 from frappe.utils.dateutils import get_from_date_from_timespan, get_period_ending
 from frappe.utils.nestedset import get_descendants_of
 
+
 @frappe.whitelist()
 @cache_source
 def get(chart_name = None, chart = None, no_cache = None, filters = None, from_date = None,
diff --git a/erpnext/accounts/deferred_revenue.py b/erpnext/accounts/deferred_revenue.py
index 173b1ee..bcd0771 100644
--- a/erpnext/accounts/deferred_revenue.py
+++ b/erpnext/accounts/deferred_revenue.py
@@ -2,11 +2,26 @@
 
 import frappe
 from frappe import _
-from frappe.utils import date_diff, add_months, today, getdate, add_days, flt, get_last_day, get_first_day, cint, get_link_to_form, rounded
-from erpnext.accounts.utils import get_account_currency
 from frappe.email import sendmail_to_system_managers
-from frappe.utils.background_jobs import enqueue
-from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import get_accounting_dimensions
+from frappe.utils import (
+	add_days,
+	add_months,
+	cint,
+	date_diff,
+	flt,
+	get_first_day,
+	get_last_day,
+	get_link_to_form,
+	getdate,
+	rounded,
+	today,
+)
+
+from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import (
+	get_accounting_dimensions,
+)
+from erpnext.accounts.utils import get_account_currency
+
 
 def validate_service_stop_date(doc):
 	''' Validates service_stop_date for Purchase Invoice and Sales Invoice '''
diff --git a/erpnext/accounts/doctype/account/account.py b/erpnext/accounts/doctype/account/account.py
index f763df0..f6198eb 100644
--- a/erpnext/accounts/doctype/account/account.py
+++ b/erpnext/accounts/doctype/account/account.py
@@ -2,11 +2,13 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
+from frappe import _, throw
 from frappe.utils import cint, cstr
-from frappe import throw, _
 from frappe.utils.nestedset import NestedSet, get_ancestors_of, get_descendants_of
 
+
 class RootNotEditable(frappe.ValidationError): pass
 class BalanceMismatchError(frappe.ValidationError): pass
 
diff --git a/erpnext/accounts/doctype/account/chart_of_accounts/chart_of_accounts.py b/erpnext/accounts/doctype/account/chart_of_accounts/chart_of_accounts.py
index 927adc7..d6ccd16 100644
--- a/erpnext/accounts/doctype/account/chart_of_accounts/chart_of_accounts.py
+++ b/erpnext/accounts/doctype/account/chart_of_accounts/chart_of_accounts.py
@@ -2,12 +2,15 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
+import json
+import os
 
-import frappe, os, json
+import frappe
 from frappe.utils import cstr
-from unidecode import unidecode
-from six import iteritems
 from frappe.utils.nestedset import rebuild_tree
+from six import iteritems
+from unidecode import unidecode
+
 
 def create_charts(company, chart_template=None, existing_company=None, custom_chart=None):
 	chart = custom_chart or get_chart(chart_template, existing_company)
@@ -91,11 +94,14 @@
 		return get_account_tree_from_existing_company(existing_company)
 
 	elif chart_template == "Standard":
-		from erpnext.accounts.doctype.account.chart_of_accounts.verified import standard_chart_of_accounts
+		from erpnext.accounts.doctype.account.chart_of_accounts.verified import (
+			standard_chart_of_accounts,
+		)
 		return standard_chart_of_accounts.get()
 	elif chart_template == "Standard with Numbers":
-		from erpnext.accounts.doctype.account.chart_of_accounts.verified \
-			import standard_chart_of_accounts_with_account_number
+		from erpnext.accounts.doctype.account.chart_of_accounts.verified import (
+			standard_chart_of_accounts_with_account_number,
+		)
 		return standard_chart_of_accounts_with_account_number.get()
 	else:
 		folders = ("verified",)
diff --git a/erpnext/accounts/doctype/account/chart_of_accounts/import_from_openerp.py b/erpnext/accounts/doctype/account/chart_of_accounts/import_from_openerp.py
index eb3e7ff..7222357 100644
--- a/erpnext/accounts/doctype/account/chart_of_accounts/import_from_openerp.py
+++ b/erpnext/accounts/doctype/account/chart_of_accounts/import_from_openerp.py
@@ -6,12 +6,13 @@
 """
 from __future__ import print_function, unicode_literals
 
-import os, json
 import ast
+import json
+import os
 from xml.etree import ElementTree as ET
-from frappe.utils.csvutils import read_csv_content
-import frappe
 
+import frappe
+from frappe.utils.csvutils import read_csv_content
 from six import iteritems
 
 path = "/Users/nabinhait/projects/odoo/addons"
diff --git a/erpnext/accounts/doctype/account/chart_of_accounts/verified/standard_chart_of_accounts.py b/erpnext/accounts/doctype/account/chart_of_accounts/verified/standard_chart_of_accounts.py
index 161e52a..f058afb 100644
--- a/erpnext/accounts/doctype/account/chart_of_accounts/verified/standard_chart_of_accounts.py
+++ b/erpnext/accounts/doctype/account/chart_of_accounts/verified/standard_chart_of_accounts.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get():
 	return {
 	    _("Application of Funds (Assets)"): {
diff --git a/erpnext/accounts/doctype/account/chart_of_accounts/verified/standard_chart_of_accounts_with_account_number.py b/erpnext/accounts/doctype/account/chart_of_accounts/verified/standard_chart_of_accounts_with_account_number.py
index acb11e5..9f33952 100644
--- a/erpnext/accounts/doctype/account/chart_of_accounts/verified/standard_chart_of_accounts_with_account_number.py
+++ b/erpnext/accounts/doctype/account/chart_of_accounts/verified/standard_chart_of_accounts_with_account_number.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get():
     return {
         _("Application of Funds (Assets)"): {
diff --git a/erpnext/accounts/doctype/account/test_account.py b/erpnext/accounts/doctype/account/test_account.py
index 533eda3..0c3b33e 100644
--- a/erpnext/accounts/doctype/account/test_account.py
+++ b/erpnext/accounts/doctype/account/test_account.py
@@ -2,10 +2,14 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import unittest
+
 import frappe
-from erpnext.stock import get_warehouse_account, get_company_default_inventory_account
-from erpnext.accounts.doctype.account.account import update_account_number, merge_account
+
+from erpnext.accounts.doctype.account.account import merge_account, update_account_number
+from erpnext.stock import get_company_default_inventory_account, get_warehouse_account
+
 
 class TestAccount(unittest.TestCase):
 	def test_rename_account(self):
diff --git a/erpnext/accounts/doctype/accounting_dimension/accounting_dimension.py b/erpnext/accounts/doctype/accounting_dimension/accounting_dimension.py
index fac28c9..f3d1b3d 100644
--- a/erpnext/accounts/doctype/accounting_dimension/accounting_dimension.py
+++ b/erpnext/accounts/doctype/accounting_dimension/accounting_dimension.py
@@ -3,15 +3,16 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe import _
+
 import json
-from frappe.model.document import Document
+
+import frappe
+from frappe import _, scrub
 from frappe.custom.doctype.custom_field.custom_field import create_custom_field
-from frappe import scrub
-from frappe.utils import cstr
-from frappe.utils.background_jobs import enqueue
 from frappe.model import core_doctypes_list
+from frappe.model.document import Document
+from frappe.utils import cstr
+
 
 class AccountingDimension(Document):
 	def before_insert(self):
diff --git a/erpnext/accounts/doctype/accounting_dimension/test_accounting_dimension.py b/erpnext/accounts/doctype/accounting_dimension/test_accounting_dimension.py
index 4f3ee76..3769fc1 100644
--- a/erpnext/accounts/doctype/accounting_dimension/test_accounting_dimension.py
+++ b/erpnext/accounts/doctype/accounting_dimension/test_accounting_dimension.py
@@ -3,10 +3,12 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
+
+import frappe
+
 from erpnext.accounts.doctype.journal_entry.test_journal_entry import make_journal_entry
+from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
 
 test_dependencies = ['Cost Center', 'Location', 'Warehouse', 'Department']
 
diff --git a/erpnext/accounts/doctype/accounting_dimension_detail/accounting_dimension_detail.py b/erpnext/accounts/doctype/accounting_dimension_detail/accounting_dimension_detail.py
index 17cf549..c116f16 100644
--- a/erpnext/accounts/doctype/accounting_dimension_detail/accounting_dimension_detail.py
+++ b/erpnext/accounts/doctype/accounting_dimension_detail/accounting_dimension_detail.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class AccountingDimensionDetail(Document):
 	pass
diff --git a/erpnext/accounts/doctype/accounting_dimension_filter/accounting_dimension_filter.py b/erpnext/accounts/doctype/accounting_dimension_filter/accounting_dimension_filter.py
index 6aef9ca..cb8c7d1 100644
--- a/erpnext/accounts/doctype/accounting_dimension_filter/accounting_dimension_filter.py
+++ b/erpnext/accounts/doctype/accounting_dimension_filter/accounting_dimension_filter.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _, scrub
 from frappe.model.document import Document
 
+
 class AccountingDimensionFilter(Document):
 	def validate(self):
 		self.validate_applicable_accounts()
diff --git a/erpnext/accounts/doctype/accounting_dimension_filter/test_accounting_dimension_filter.py b/erpnext/accounts/doctype/accounting_dimension_filter/test_accounting_dimension_filter.py
index 7f6254f..9968f68 100644
--- a/erpnext/accounts/doctype/accounting_dimension_filter/test_accounting_dimension_filter.py
+++ b/erpnext/accounts/doctype/accounting_dimension_filter/test_accounting_dimension_filter.py
@@ -3,10 +3,15 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
+import frappe
+
+from erpnext.accounts.doctype.accounting_dimension.test_accounting_dimension import (
+	create_dimension,
+	disable_dimension,
+)
 from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
-from erpnext.accounts.doctype.accounting_dimension.test_accounting_dimension import create_dimension, disable_dimension
 from erpnext.exceptions import InvalidAccountDimensionError, MandatoryAccountDimensionError
 
 test_dependencies = ['Location', 'Cost Center', 'Department']
diff --git a/erpnext/accounts/doctype/accounting_period/accounting_period.py b/erpnext/accounts/doctype/accounting_period/accounting_period.py
index 739d8f6..67d1a8a 100644
--- a/erpnext/accounts/doctype/accounting_period/accounting_period.py
+++ b/erpnext/accounts/doctype/accounting_period/accounting_period.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.document import Document
 from frappe import _
+from frappe.model.document import Document
+
 
 class OverlapError(frappe.ValidationError): pass
 
diff --git a/erpnext/accounts/doctype/accounting_period/test_accounting_period.py b/erpnext/accounts/doctype/accounting_period/test_accounting_period.py
index dc472c7..5885b58 100644
--- a/erpnext/accounts/doctype/accounting_period/test_accounting_period.py
+++ b/erpnext/accounts/doctype/accounting_period/test_accounting_period.py
@@ -3,12 +3,14 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import nowdate, add_months
-from erpnext.accounts.general_ledger import ClosedAccountingPeriod
+
+import frappe
+from frappe.utils import add_months, nowdate
+
 from erpnext.accounts.doctype.accounting_period.accounting_period import OverlapError
 from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
+from erpnext.accounts.general_ledger import ClosedAccountingPeriod
 
 test_dependencies = ['Item']
 
diff --git a/erpnext/accounts/doctype/accounts_settings/accounts_settings.py b/erpnext/accounts/doctype/accounts_settings/accounts_settings.py
index 62c97f2..f544733 100644
--- a/erpnext/accounts/doctype/accounts_settings/accounts_settings.py
+++ b/erpnext/accounts/doctype/accounts_settings/accounts_settings.py
@@ -4,11 +4,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import cint
-from frappe.model.document import Document
 from frappe.custom.doctype.property_setter.property_setter import make_property_setter
+from frappe.model.document import Document
+from frappe.utils import cint
 
 
 class AccountsSettings(Document):
diff --git a/erpnext/accounts/doctype/accounts_settings/test_accounts_settings.py b/erpnext/accounts/doctype/accounts_settings/test_accounts_settings.py
index 014cf45..c1c156f 100644
--- a/erpnext/accounts/doctype/accounts_settings/test_accounts_settings.py
+++ b/erpnext/accounts/doctype/accounts_settings/test_accounts_settings.py
@@ -1,4 +1,5 @@
 from __future__ import unicode_literals
+
 import unittest
 
 import frappe
diff --git a/erpnext/accounts/doctype/advance_taxes_and_charges/advance_taxes_and_charges.py b/erpnext/accounts/doctype/advance_taxes_and_charges/advance_taxes_and_charges.py
index 597d2cc..0c98f24 100644
--- a/erpnext/accounts/doctype/advance_taxes_and_charges/advance_taxes_and_charges.py
+++ b/erpnext/accounts/doctype/advance_taxes_and_charges/advance_taxes_and_charges.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class AdvanceTaxesandCharges(Document):
 	pass
diff --git a/erpnext/accounts/doctype/allowed_dimension/allowed_dimension.py b/erpnext/accounts/doctype/allowed_dimension/allowed_dimension.py
index c2afc1a..b5e7ad3 100644
--- a/erpnext/accounts/doctype/allowed_dimension/allowed_dimension.py
+++ b/erpnext/accounts/doctype/allowed_dimension/allowed_dimension.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class AllowedDimension(Document):
 	pass
diff --git a/erpnext/accounts/doctype/allowed_to_transact_with/allowed_to_transact_with.py b/erpnext/accounts/doctype/allowed_to_transact_with/allowed_to_transact_with.py
index a3e4bbc..3e84c30 100644
--- a/erpnext/accounts/doctype/allowed_to_transact_with/allowed_to_transact_with.py
+++ b/erpnext/accounts/doctype/allowed_to_transact_with/allowed_to_transact_with.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class AllowedToTransactWith(Document):
 	pass
diff --git a/erpnext/accounts/doctype/applicable_on_account/applicable_on_account.py b/erpnext/accounts/doctype/applicable_on_account/applicable_on_account.py
index 0fccaf3..91331fa 100644
--- a/erpnext/accounts/doctype/applicable_on_account/applicable_on_account.py
+++ b/erpnext/accounts/doctype/applicable_on_account/applicable_on_account.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class ApplicableOnAccount(Document):
 	pass
diff --git a/erpnext/accounts/doctype/bank/bank.py b/erpnext/accounts/doctype/bank/bank.py
index 99fa21c..e1eb984 100644
--- a/erpnext/accounts/doctype/bank/bank.py
+++ b/erpnext/accounts/doctype/bank/bank.py
@@ -3,9 +3,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
+from frappe.contacts.address_and_contact import (
+	delete_contact_and_address,
+	load_address_and_contact,
+)
 from frappe.model.document import Document
-from frappe.contacts.address_and_contact import load_address_and_contact, delete_contact_and_address
+
 
 class Bank(Document):
 	def onload(self):
diff --git a/erpnext/accounts/doctype/bank/test_bank.py b/erpnext/accounts/doctype/bank/test_bank.py
index d8741f2..62d14d6 100644
--- a/erpnext/accounts/doctype/bank/test_bank.py
+++ b/erpnext/accounts/doctype/bank/test_bank.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestBank(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/bank_account/bank_account.py b/erpnext/accounts/doctype/bank_account/bank_account.py
index 3e08c28..703f55d 100644
--- a/erpnext/accounts/doctype/bank_account/bank_account.py
+++ b/erpnext/accounts/doctype/bank_account/bank_account.py
@@ -3,10 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
+from frappe.contacts.address_and_contact import (
+	delete_contact_and_address,
+	load_address_and_contact,
+)
 from frappe.model.document import Document
-from frappe.contacts.address_and_contact import load_address_and_contact, delete_contact_and_address
+
 
 class BankAccount(Document):
 	def onload(self):
diff --git a/erpnext/accounts/doctype/bank_account/test_bank_account.py b/erpnext/accounts/doctype/bank_account/test_bank_account.py
index ed34d17..dc970f3 100644
--- a/erpnext/accounts/doctype/bank_account/test_bank_account.py
+++ b/erpnext/accounts/doctype/bank_account/test_bank_account.py
@@ -3,11 +3,11 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
-from  frappe import _
-from  frappe import ValidationError
 import unittest
 
+import frappe
+from frappe import ValidationError
+
 # test_records = frappe.get_test_records('Bank Account')
 
 class TestBankAccount(unittest.TestCase):
diff --git a/erpnext/accounts/doctype/bank_account_subtype/bank_account_subtype.py b/erpnext/accounts/doctype/bank_account_subtype/bank_account_subtype.py
index ab52c4a..84fa0c9 100644
--- a/erpnext/accounts/doctype/bank_account_subtype/bank_account_subtype.py
+++ b/erpnext/accounts/doctype/bank_account_subtype/bank_account_subtype.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class BankAccountSubtype(Document):
 	pass
diff --git a/erpnext/accounts/doctype/bank_account_subtype/test_bank_account_subtype.py b/erpnext/accounts/doctype/bank_account_subtype/test_bank_account_subtype.py
index ca3addc..d4eb88b 100644
--- a/erpnext/accounts/doctype/bank_account_subtype/test_bank_account_subtype.py
+++ b/erpnext/accounts/doctype/bank_account_subtype/test_bank_account_subtype.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestBankAccountSubtype(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/bank_account_type/bank_account_type.py b/erpnext/accounts/doctype/bank_account_type/bank_account_type.py
index b7dc0e0..bba43dc 100644
--- a/erpnext/accounts/doctype/bank_account_type/bank_account_type.py
+++ b/erpnext/accounts/doctype/bank_account_type/bank_account_type.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class BankAccountType(Document):
 	pass
diff --git a/erpnext/accounts/doctype/bank_account_type/test_bank_account_type.py b/erpnext/accounts/doctype/bank_account_type/test_bank_account_type.py
index f04725a..00fd433 100644
--- a/erpnext/accounts/doctype/bank_account_type/test_bank_account_type.py
+++ b/erpnext/accounts/doctype/bank_account_type/test_bank_account_type.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestBankAccountType(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/bank_clearance/bank_clearance.py b/erpnext/accounts/doctype/bank_clearance/bank_clearance.py
index 79f5596..340b448 100644
--- a/erpnext/accounts/doctype/bank_clearance/bank_clearance.py
+++ b/erpnext/accounts/doctype/bank_clearance/bank_clearance.py
@@ -2,10 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import flt, getdate, nowdate, fmt_money
-from frappe import msgprint, _
+from frappe import _, msgprint
 from frappe.model.document import Document
+from frappe.utils import flt, fmt_money, getdate, nowdate
 
 form_grid_templates = {
 	"journal_entries": "templates/form_grid/bank_reconciliation_grid.html"
diff --git a/erpnext/accounts/doctype/bank_clearance/test_bank_clearance.py b/erpnext/accounts/doctype/bank_clearance/test_bank_clearance.py
index 833abde..bdf3c7f 100644
--- a/erpnext/accounts/doctype/bank_clearance/test_bank_clearance.py
+++ b/erpnext/accounts/doctype/bank_clearance/test_bank_clearance.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestBankClearance(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/bank_clearance_detail/bank_clearance_detail.py b/erpnext/accounts/doctype/bank_clearance_detail/bank_clearance_detail.py
index 59299f8..1b23400 100644
--- a/erpnext/accounts/doctype/bank_clearance_detail/bank_clearance_detail.py
+++ b/erpnext/accounts/doctype/bank_clearance_detail/bank_clearance_detail.py
@@ -2,8 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class BankClearanceDetail(Document):
 	pass
diff --git a/erpnext/accounts/doctype/bank_guarantee/bank_guarantee.py b/erpnext/accounts/doctype/bank_guarantee/bank_guarantee.py
index a0aac6a..8043c5f 100644
--- a/erpnext/accounts/doctype/bank_guarantee/bank_guarantee.py
+++ b/erpnext/accounts/doctype/bank_guarantee/bank_guarantee.py
@@ -3,10 +3,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, json
-from frappe.model.document import Document
+
+import json
+
+import frappe
 from frappe import _
 from frappe.desk.search import sanitize_searchfield
+from frappe.model.document import Document
+
 
 class BankGuarantee(Document):
 	def validate(self):
diff --git a/erpnext/accounts/doctype/bank_guarantee/test_bank_guarantee.py b/erpnext/accounts/doctype/bank_guarantee/test_bank_guarantee.py
index 816743a..5cd455f 100644
--- a/erpnext/accounts/doctype/bank_guarantee/test_bank_guarantee.py
+++ b/erpnext/accounts/doctype/bank_guarantee/test_bank_guarantee.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestBankGuarantee(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/bank_reconciliation_tool/bank_reconciliation_tool.py b/erpnext/accounts/doctype/bank_reconciliation_tool/bank_reconciliation_tool.py
index 8a17233..ce64ee4 100644
--- a/erpnext/accounts/doctype/bank_reconciliation_tool/bank_reconciliation_tool.py
+++ b/erpnext/accounts/doctype/bank_reconciliation_tool/bank_reconciliation_tool.py
@@ -3,17 +3,21 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import json
 
 import frappe
-from frappe.model.document import Document
 from frappe import _
+from frappe.model.document import Document
 from frappe.utils import flt
 
 from erpnext import get_company_currency
-from erpnext.accounts.utils import get_balance_on
-from erpnext.accounts.report.bank_reconciliation_statement.bank_reconciliation_statement import get_entries, get_amounts_not_reflected_in_system
 from erpnext.accounts.doctype.bank_transaction.bank_transaction import get_paid_amount
+from erpnext.accounts.report.bank_reconciliation_statement.bank_reconciliation_statement import (
+	get_amounts_not_reflected_in_system,
+	get_entries,
+)
+from erpnext.accounts.utils import get_balance_on
 
 
 class BankReconciliationTool(Document):
diff --git a/erpnext/accounts/doctype/bank_reconciliation_tool/test_bank_reconciliation_tool.py b/erpnext/accounts/doctype/bank_reconciliation_tool/test_bank_reconciliation_tool.py
index d96950a..55b83b6 100644
--- a/erpnext/accounts/doctype/bank_reconciliation_tool/test_bank_reconciliation_tool.py
+++ b/erpnext/accounts/doctype/bank_reconciliation_tool/test_bank_reconciliation_tool.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestBankReconciliationTool(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/bank_statement_import/bank_statement_import.py b/erpnext/accounts/doctype/bank_statement_import/bank_statement_import.py
index ffc9d1c..25d1023 100644
--- a/erpnext/accounts/doctype/bank_statement_import/bank_statement_import.py
+++ b/erpnext/accounts/doctype/bank_statement_import/bank_statement_import.py
@@ -3,22 +3,22 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import csv
 import json
 import re
 
+import frappe
 import openpyxl
+from frappe import _
+from frappe.core.doctype.data_import.data_import import DataImport
+from frappe.core.doctype.data_import.importer import Importer, ImportFile
+from frappe.utils.background_jobs import enqueue
+from frappe.utils.xlsxutils import ILLEGAL_CHARACTERS_RE, handle_html
 from openpyxl.styles import Font
 from openpyxl.utils import get_column_letter
 from six import string_types
 
-import frappe
-from frappe.core.doctype.data_import.importer import Importer, ImportFile
-from frappe.utils.background_jobs import enqueue
-from frappe.utils.xlsxutils import handle_html, ILLEGAL_CHARACTERS_RE
-from frappe import _
-
-from frappe.core.doctype.data_import.data_import import DataImport
 
 class BankStatementImport(DataImport):
 	def __init__(self, *args, **kwargs):
diff --git a/erpnext/accounts/doctype/bank_statement_import/test_bank_statement_import.py b/erpnext/accounts/doctype/bank_statement_import/test_bank_statement_import.py
index cd58314..5b45fa2 100644
--- a/erpnext/accounts/doctype/bank_statement_import/test_bank_statement_import.py
+++ b/erpnext/accounts/doctype/bank_statement_import/test_bank_statement_import.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestBankStatementImport(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/bank_transaction/bank_transaction.py b/erpnext/accounts/doctype/bank_transaction/bank_transaction.py
index 235af2d..c4cf37e 100644
--- a/erpnext/accounts/doctype/bank_transaction/bank_transaction.py
+++ b/erpnext/accounts/doctype/bank_transaction/bank_transaction.py
@@ -3,11 +3,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from erpnext.controllers.status_updater import StatusUpdater
 from frappe.utils import flt
 from six.moves import reduce
-from frappe import _
+
+from erpnext.controllers.status_updater import StatusUpdater
+
 
 class BankTransaction(StatusUpdater):
 	def after_insert(self):
diff --git a/erpnext/accounts/doctype/bank_transaction/bank_transaction_upload.py b/erpnext/accounts/doctype/bank_transaction/bank_transaction_upload.py
index dc3b867..e8d032b 100644
--- a/erpnext/accounts/doctype/bank_transaction/bank_transaction_upload.py
+++ b/erpnext/accounts/doctype/bank_transaction/bank_transaction_upload.py
@@ -3,12 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import json
+
+import frappe
 from frappe.utils import getdate
 from frappe.utils.dateutils import parse_date
 from six import iteritems
 
+
 @frappe.whitelist()
 def upload_bank_statement():
 	if getattr(frappe, "uploaded_file", None):
diff --git a/erpnext/accounts/doctype/bank_transaction/test_bank_transaction.py b/erpnext/accounts/doctype/bank_transaction/test_bank_transaction.py
index 439d489..35d08bd 100644
--- a/erpnext/accounts/doctype/bank_transaction/test_bank_transaction.py
+++ b/erpnext/accounts/doctype/bank_transaction/test_bank_transaction.py
@@ -3,14 +3,19 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
-import unittest
 import json
-from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
-from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import make_purchase_invoice
+import unittest
+
+import frappe
+
+from erpnext.accounts.doctype.bank_reconciliation_tool.bank_reconciliation_tool import (
+	get_linked_payments,
+	reconcile_vouchers,
+)
 from erpnext.accounts.doctype.payment_entry.test_payment_entry import get_payment_entry
-from erpnext.accounts.doctype.bank_reconciliation_tool.bank_reconciliation_tool import reconcile_vouchers, get_linked_payments
 from erpnext.accounts.doctype.pos_profile.test_pos_profile import make_pos_profile
+from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import make_purchase_invoice
+from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
 
 test_dependencies = ["Item", "Cost Center"]
 
diff --git a/erpnext/accounts/doctype/bank_transaction_mapping/bank_transaction_mapping.py b/erpnext/accounts/doctype/bank_transaction_mapping/bank_transaction_mapping.py
index 95a5bc3..8b809fe 100644
--- a/erpnext/accounts/doctype/bank_transaction_mapping/bank_transaction_mapping.py
+++ b/erpnext/accounts/doctype/bank_transaction_mapping/bank_transaction_mapping.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class BankTransactionMapping(Document):
 	pass
diff --git a/erpnext/accounts/doctype/bank_transaction_payments/bank_transaction_payments.py b/erpnext/accounts/doctype/bank_transaction_payments/bank_transaction_payments.py
index d6d7c10..2546f27 100644
--- a/erpnext/accounts/doctype/bank_transaction_payments/bank_transaction_payments.py
+++ b/erpnext/accounts/doctype/bank_transaction_payments/bank_transaction_payments.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class BankTransactionPayments(Document):
 	pass
diff --git a/erpnext/accounts/doctype/budget/budget.py b/erpnext/accounts/doctype/budget/budget.py
index d93b6ff..9c20e82 100644
--- a/erpnext/accounts/doctype/budget/budget.py
+++ b/erpnext/accounts/doctype/budget/budget.py
@@ -1,15 +1,20 @@
- # -*- coding: utf-8 -*-
+# -*- coding: utf-8 -*-
 # Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and contributors
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import flt, getdate, add_months, get_last_day, fmt_money, nowdate
-from frappe.model.naming import make_autoname
-from erpnext.accounts.utils import get_fiscal_year
 from frappe.model.document import Document
-from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import get_accounting_dimensions
+from frappe.model.naming import make_autoname
+from frappe.utils import add_months, flt, fmt_money, get_last_day, getdate
+
+from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import (
+	get_accounting_dimensions,
+)
+from erpnext.accounts.utils import get_fiscal_year
+
 
 class BudgetError(frappe.ValidationError): pass
 class DuplicateBudgetError(frappe.ValidationError): pass
diff --git a/erpnext/accounts/doctype/budget/test_budget.py b/erpnext/accounts/doctype/budget/test_budget.py
index 6c25f00..cc82209 100644
--- a/erpnext/accounts/doctype/budget/test_budget.py
+++ b/erpnext/accounts/doctype/budget/test_budget.py
@@ -3,13 +3,15 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import nowdate, now_datetime
+
+import frappe
+from frappe.utils import now_datetime, nowdate
+
+from erpnext.accounts.doctype.budget.budget import BudgetError, get_actual_expense
+from erpnext.accounts.doctype.journal_entry.test_journal_entry import make_journal_entry
 from erpnext.accounts.utils import get_fiscal_year
 from erpnext.buying.doctype.purchase_order.test_purchase_order import create_purchase_order
-from erpnext.accounts.doctype.budget.budget import get_actual_expense, BudgetError
-from erpnext.accounts.doctype.journal_entry.test_journal_entry import make_journal_entry
 
 test_dependencies = ['Monthly Distribution']
 
diff --git a/erpnext/accounts/doctype/budget_account/budget_account.py b/erpnext/accounts/doctype/budget_account/budget_account.py
index 81b2709..454e47d 100644
--- a/erpnext/accounts/doctype/budget_account/budget_account.py
+++ b/erpnext/accounts/doctype/budget_account/budget_account.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class BudgetAccount(Document):
 	pass
diff --git a/erpnext/accounts/doctype/c_form/c_form.py b/erpnext/accounts/doctype/c_form/c_form.py
index cfe28f3..b1ab648 100644
--- a/erpnext/accounts/doctype/c_form/c_form.py
+++ b/erpnext/accounts/doctype/c_form/c_form.py
@@ -2,10 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import flt
 from frappe import _
 from frappe.model.document import Document
+from frappe.utils import flt
+
 
 class CForm(Document):
 	def validate(self):
diff --git a/erpnext/accounts/doctype/c_form/test_c_form.py b/erpnext/accounts/doctype/c_form/test_c_form.py
index c4c95db..e5c5615 100644
--- a/erpnext/accounts/doctype/c_form/test_c_form.py
+++ b/erpnext/accounts/doctype/c_form/test_c_form.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('C-Form')
diff --git a/erpnext/accounts/doctype/c_form_invoice_detail/c_form_invoice_detail.py b/erpnext/accounts/doctype/c_form_invoice_detail/c_form_invoice_detail.py
index 20e423a..1316227 100644
--- a/erpnext/accounts/doctype/c_form_invoice_detail/c_form_invoice_detail.py
+++ b/erpnext/accounts/doctype/c_form_invoice_detail/c_form_invoice_detail.py
@@ -2,8 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class CFormInvoiceDetail(Document):
 	pass
diff --git a/erpnext/accounts/doctype/campaign_item/campaign_item.py b/erpnext/accounts/doctype/campaign_item/campaign_item.py
index 4f5fd7f..d78fdf5 100644
--- a/erpnext/accounts/doctype/campaign_item/campaign_item.py
+++ b/erpnext/accounts/doctype/campaign_item/campaign_item.py
@@ -4,5 +4,6 @@
 # import frappe
 from frappe.model.document import Document
 
+
 class CampaignItem(Document):
 	pass
diff --git a/erpnext/accounts/doctype/cash_flow_mapper/cash_flow_mapper.py b/erpnext/accounts/doctype/cash_flow_mapper/cash_flow_mapper.py
index 7251533..96920b3 100644
--- a/erpnext/accounts/doctype/cash_flow_mapper/cash_flow_mapper.py
+++ b/erpnext/accounts/doctype/cash_flow_mapper/cash_flow_mapper.py
@@ -3,6 +3,7 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
 
diff --git a/erpnext/accounts/doctype/cash_flow_mapping/cash_flow_mapping.py b/erpnext/accounts/doctype/cash_flow_mapping/cash_flow_mapping.py
index b1ad297..9ec466a 100644
--- a/erpnext/accounts/doctype/cash_flow_mapping/cash_flow_mapping.py
+++ b/erpnext/accounts/doctype/cash_flow_mapping/cash_flow_mapping.py
@@ -3,6 +3,7 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 
diff --git a/erpnext/accounts/doctype/cash_flow_mapping/test_cash_flow_mapping.py b/erpnext/accounts/doctype/cash_flow_mapping/test_cash_flow_mapping.py
index 499c820..5e44c61 100644
--- a/erpnext/accounts/doctype/cash_flow_mapping/test_cash_flow_mapping.py
+++ b/erpnext/accounts/doctype/cash_flow_mapping/test_cash_flow_mapping.py
@@ -3,9 +3,10 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
 
 class TestCashFlowMapping(unittest.TestCase):
 	def setUp(self):
diff --git a/erpnext/accounts/doctype/cash_flow_mapping_accounts/cash_flow_mapping_accounts.py b/erpnext/accounts/doctype/cash_flow_mapping_accounts/cash_flow_mapping_accounts.py
index fc63b8f..5174035 100644
--- a/erpnext/accounts/doctype/cash_flow_mapping_accounts/cash_flow_mapping_accounts.py
+++ b/erpnext/accounts/doctype/cash_flow_mapping_accounts/cash_flow_mapping_accounts.py
@@ -3,6 +3,7 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
 
diff --git a/erpnext/accounts/doctype/cash_flow_mapping_template/cash_flow_mapping_template.py b/erpnext/accounts/doctype/cash_flow_mapping_template/cash_flow_mapping_template.py
index 6f77a39..fabf579 100644
--- a/erpnext/accounts/doctype/cash_flow_mapping_template/cash_flow_mapping_template.py
+++ b/erpnext/accounts/doctype/cash_flow_mapping_template/cash_flow_mapping_template.py
@@ -3,6 +3,7 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
 
diff --git a/erpnext/accounts/doctype/cash_flow_mapping_template_details/cash_flow_mapping_template_details.py b/erpnext/accounts/doctype/cash_flow_mapping_template_details/cash_flow_mapping_template_details.py
index e10b638..f0ff33f 100644
--- a/erpnext/accounts/doctype/cash_flow_mapping_template_details/cash_flow_mapping_template_details.py
+++ b/erpnext/accounts/doctype/cash_flow_mapping_template_details/cash_flow_mapping_template_details.py
@@ -3,6 +3,7 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
 
diff --git a/erpnext/accounts/doctype/cashier_closing/cashier_closing.py b/erpnext/accounts/doctype/cashier_closing/cashier_closing.py
index 081c6fa..cab7d40 100644
--- a/erpnext/accounts/doctype/cashier_closing/cashier_closing.py
+++ b/erpnext/accounts/doctype/cashier_closing/cashier_closing.py
@@ -3,10 +3,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
+from frappe import _
 from frappe.model.document import Document
-from frappe.utils import cint, flt, cstr
-from frappe import _, msgprint, throw
+from frappe.utils import flt
+
 
 class CashierClosing(Document):
 	def validate(self):
diff --git a/erpnext/accounts/doctype/cashier_closing/test_cashier_closing.py b/erpnext/accounts/doctype/cashier_closing/test_cashier_closing.py
index 3c489a7..981093f 100644
--- a/erpnext/accounts/doctype/cashier_closing/test_cashier_closing.py
+++ b/erpnext/accounts/doctype/cashier_closing/test_cashier_closing.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestCashierClosing(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/cashier_closing_payments/cashier_closing_payments.py b/erpnext/accounts/doctype/cashier_closing_payments/cashier_closing_payments.py
index f737031..a2a8b94 100644
--- a/erpnext/accounts/doctype/cashier_closing_payments/cashier_closing_payments.py
+++ b/erpnext/accounts/doctype/cashier_closing_payments/cashier_closing_payments.py
@@ -3,8 +3,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class CashierClosingPayments(Document):
 	pass
diff --git a/erpnext/accounts/doctype/chart_of_accounts_importer/chart_of_accounts_importer.py b/erpnext/accounts/doctype/chart_of_accounts_importer/chart_of_accounts_importer.py
index 8456b49..61968cf 100644
--- a/erpnext/accounts/doctype/chart_of_accounts_importer/chart_of_accounts_importer.py
+++ b/erpnext/accounts/doctype/chart_of_accounts_importer/chart_of_accounts_importer.py
@@ -3,14 +3,26 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
+import csv
+import os
 from functools import reduce
-import frappe, csv, os
+
+import frappe
 from frappe import _
-from frappe.utils import cstr, cint
 from frappe.model.document import Document
+from frappe.utils import cint, cstr
 from frappe.utils.csvutils import UnicodeWriter
-from erpnext.accounts.doctype.account.chart_of_accounts.chart_of_accounts import create_charts, build_tree_from_json
-from frappe.utils.xlsxutils import read_xlsx_file_from_attached_file, read_xls_file_from_attached_file
+from frappe.utils.xlsxutils import (
+	read_xls_file_from_attached_file,
+	read_xlsx_file_from_attached_file,
+)
+
+from erpnext.accounts.doctype.account.chart_of_accounts.chart_of_accounts import (
+	build_tree_from_json,
+	create_charts,
+)
+
 
 class ChartofAccountsImporter(Document):
 	def validate(self):
diff --git a/erpnext/accounts/doctype/chart_of_accounts_importer/test_chart_of_accounts_importer.py b/erpnext/accounts/doctype/chart_of_accounts_importer/test_chart_of_accounts_importer.py
index 6ab19b7..ca9cf69 100644
--- a/erpnext/accounts/doctype/chart_of_accounts_importer/test_chart_of_accounts_importer.py
+++ b/erpnext/accounts/doctype/chart_of_accounts_importer/test_chart_of_accounts_importer.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestChartofAccountsImporter(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/cheque_print_template/cheque_print_template.py b/erpnext/accounts/doctype/cheque_print_template/cheque_print_template.py
index d62ee9d..0f595ba 100644
--- a/erpnext/accounts/doctype/cheque_print_template/cheque_print_template.py
+++ b/erpnext/accounts/doctype/cheque_print_template/cheque_print_template.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.document import Document
 from frappe import _
+from frappe.model.document import Document
+
 
 class ChequePrintTemplate(Document):
 	pass
diff --git a/erpnext/accounts/doctype/cheque_print_template/test_cheque_print_template.py b/erpnext/accounts/doctype/cheque_print_template/test_cheque_print_template.py
index fa9c5b5..8ce8794 100644
--- a/erpnext/accounts/doctype/cheque_print_template/test_cheque_print_template.py
+++ b/erpnext/accounts/doctype/cheque_print_template/test_cheque_print_template.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Cheque Print Template')
diff --git a/erpnext/accounts/doctype/closed_document/closed_document.py b/erpnext/accounts/doctype/closed_document/closed_document.py
index 048ceee..50469bc 100644
--- a/erpnext/accounts/doctype/closed_document/closed_document.py
+++ b/erpnext/accounts/doctype/closed_document/closed_document.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ClosedDocument(Document):
 	pass
diff --git a/erpnext/accounts/doctype/cost_center/cost_center.py b/erpnext/accounts/doctype/cost_center/cost_center.py
index 981fec3..166ebb8 100644
--- a/erpnext/accounts/doctype/cost_center/cost_center.py
+++ b/erpnext/accounts/doctype/cost_center/cost_center.py
@@ -2,10 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import cint, cstr
+from frappe.utils import cint
 from frappe.utils.nestedset import NestedSet
+
 from erpnext.accounts.utils import validate_field_number
 
 
diff --git a/erpnext/accounts/doctype/cost_center/test_cost_center.py b/erpnext/accounts/doctype/cost_center/test_cost_center.py
index 7779cce..142b925 100644
--- a/erpnext/accounts/doctype/cost_center/test_cost_center.py
+++ b/erpnext/accounts/doctype/cost_center/test_cost_center.py
@@ -1,7 +1,9 @@
 # Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
+
 import unittest
+
 import frappe
 
 test_records = frappe.get_test_records('Cost Center')
diff --git a/erpnext/accounts/doctype/coupon_code/coupon_code.py b/erpnext/accounts/doctype/coupon_code/coupon_code.py
index 92a816d..bb2615b 100644
--- a/erpnext/accounts/doctype/coupon_code/coupon_code.py
+++ b/erpnext/accounts/doctype/coupon_code/coupon_code.py
@@ -3,10 +3,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
-from frappe.utils import (strip)
+from frappe.utils import strip
+
+
 class CouponCode(Document):
 	def autoname(self):
 		self.coupon_name = strip(self.coupon_name)
diff --git a/erpnext/accounts/doctype/coupon_code/test_coupon_code.py b/erpnext/accounts/doctype/coupon_code/test_coupon_code.py
index 06987a8..bf8c014 100644
--- a/erpnext/accounts/doctype/coupon_code/test_coupon_code.py
+++ b/erpnext/accounts/doctype/coupon_code/test_coupon_code.py
@@ -3,11 +3,11 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
+import frappe
+
 from erpnext.selling.doctype.sales_order.test_sales_order import make_sales_order
-from erpnext.stock.get_item_details import get_item_details
-from frappe.test_runner import make_test_objects
 
 test_dependencies = ['Item']
 
diff --git a/erpnext/accounts/doctype/customer_group_item/customer_group_item.py b/erpnext/accounts/doctype/customer_group_item/customer_group_item.py
index df782ac..100bfd5 100644
--- a/erpnext/accounts/doctype/customer_group_item/customer_group_item.py
+++ b/erpnext/accounts/doctype/customer_group_item/customer_group_item.py
@@ -4,5 +4,6 @@
 # import frappe
 from frappe.model.document import Document
 
+
 class CustomerGroupItem(Document):
 	pass
diff --git a/erpnext/accounts/doctype/customer_item/customer_item.py b/erpnext/accounts/doctype/customer_item/customer_item.py
index a577145..da3533f 100644
--- a/erpnext/accounts/doctype/customer_item/customer_item.py
+++ b/erpnext/accounts/doctype/customer_item/customer_item.py
@@ -4,5 +4,6 @@
 # import frappe
 from frappe.model.document import Document
 
+
 class CustomerItem(Document):
 	pass
diff --git a/erpnext/accounts/doctype/discounted_invoice/discounted_invoice.py b/erpnext/accounts/doctype/discounted_invoice/discounted_invoice.py
index 93dfcc1..11faa77 100644
--- a/erpnext/accounts/doctype/discounted_invoice/discounted_invoice.py
+++ b/erpnext/accounts/doctype/discounted_invoice/discounted_invoice.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class DiscountedInvoice(Document):
 	pass
diff --git a/erpnext/accounts/doctype/distributed_cost_center/distributed_cost_center.py b/erpnext/accounts/doctype/distributed_cost_center/distributed_cost_center.py
index 48c589f..4367040 100644
--- a/erpnext/accounts/doctype/distributed_cost_center/distributed_cost_center.py
+++ b/erpnext/accounts/doctype/distributed_cost_center/distributed_cost_center.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class DistributedCostCenter(Document):
 	pass
diff --git a/erpnext/accounts/doctype/dunning/dunning.py b/erpnext/accounts/doctype/dunning/dunning.py
index 1ef512a..65ada53 100644
--- a/erpnext/accounts/doctype/dunning/dunning.py
+++ b/erpnext/accounts/doctype/dunning/dunning.py
@@ -3,13 +3,17 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import json
+
+import frappe
+from frappe.utils import cint, flt, getdate
 from six import string_types
-from frappe.utils import getdate, get_datetime, rounded, flt, cint
-from erpnext.loan_management.doctype.loan_interest_accrual.loan_interest_accrual import days_in_year
+
+from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import (
+	get_accounting_dimensions,
+)
 from erpnext.accounts.general_ledger import make_gl_entries, make_reverse_gl_entries
-from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import get_accounting_dimensions
 from erpnext.controllers.accounts_controller import AccountsController
 
 
diff --git a/erpnext/accounts/doctype/dunning/dunning_dashboard.py b/erpnext/accounts/doctype/dunning/dunning_dashboard.py
index 33c6ab0..fa3330f 100644
--- a/erpnext/accounts/doctype/dunning/dunning_dashboard.py
+++ b/erpnext/accounts/doctype/dunning/dunning_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'dunning',
diff --git a/erpnext/accounts/doctype/dunning/test_dunning.py b/erpnext/accounts/doctype/dunning/test_dunning.py
index 67692ec..9e8b655 100644
--- a/erpnext/accounts/doctype/dunning/test_dunning.py
+++ b/erpnext/accounts/doctype/dunning/test_dunning.py
@@ -3,13 +3,19 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import add_days, today, nowdate
-from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import unlink_payment_on_cancel_of_invoice
-from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice_against_cost_center
+
+import frappe
+from frappe.utils import add_days, nowdate, today
+
 from erpnext.accounts.doctype.dunning.dunning import calculate_interest_and_amount
 from erpnext.accounts.doctype.payment_entry.test_payment_entry import get_payment_entry
+from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import (
+	unlink_payment_on_cancel_of_invoice,
+)
+from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import (
+	create_sales_invoice_against_cost_center,
+)
 
 
 class TestDunning(unittest.TestCase):
diff --git a/erpnext/accounts/doctype/dunning_letter_text/dunning_letter_text.py b/erpnext/accounts/doctype/dunning_letter_text/dunning_letter_text.py
index 426497b..b14fdc1 100644
--- a/erpnext/accounts/doctype/dunning_letter_text/dunning_letter_text.py
+++ b/erpnext/accounts/doctype/dunning_letter_text/dunning_letter_text.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class DunningLetterText(Document):
 	pass
diff --git a/erpnext/accounts/doctype/dunning_type/dunning_type.py b/erpnext/accounts/doctype/dunning_type/dunning_type.py
index 8708748..64e7cf4 100644
--- a/erpnext/accounts/doctype/dunning_type/dunning_type.py
+++ b/erpnext/accounts/doctype/dunning_type/dunning_type.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class DunningType(Document):
 	pass
diff --git a/erpnext/accounts/doctype/dunning_type/test_dunning_type.py b/erpnext/accounts/doctype/dunning_type/test_dunning_type.py
index b2fb26f..ae08907 100644
--- a/erpnext/accounts/doctype/dunning_type/test_dunning_type.py
+++ b/erpnext/accounts/doctype/dunning_type/test_dunning_type.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestDunningType(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/exchange_rate_revaluation/exchange_rate_revaluation.py b/erpnext/accounts/doctype/exchange_rate_revaluation/exchange_rate_revaluation.py
index dbbcedc..9c173d0 100644
--- a/erpnext/accounts/doctype/exchange_rate_revaluation/exchange_rate_revaluation.py
+++ b/erpnext/accounts/doctype/exchange_rate_revaluation/exchange_rate_revaluation.py
@@ -3,13 +3,17 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
+
+import frappe
 from frappe import _
-from frappe.utils import flt
 from frappe.model.document import Document
 from frappe.model.meta import get_field_precision
-from erpnext.setup.utils import get_exchange_rate
+from frappe.utils import flt
+
+import erpnext
 from erpnext.accounts.doctype.journal_entry.journal_entry import get_balance_on
+from erpnext.setup.utils import get_exchange_rate
+
 
 class ExchangeRateRevaluation(Document):
 	def validate(self):
diff --git a/erpnext/accounts/doctype/exchange_rate_revaluation/exchange_rate_revaluation_dashboard.py b/erpnext/accounts/doctype/exchange_rate_revaluation/exchange_rate_revaluation_dashboard.py
index b5cfa04..7358f56 100644
--- a/erpnext/accounts/doctype/exchange_rate_revaluation/exchange_rate_revaluation_dashboard.py
+++ b/erpnext/accounts/doctype/exchange_rate_revaluation/exchange_rate_revaluation_dashboard.py
@@ -1,5 +1,6 @@
 from __future__ import unicode_literals
 
+
 def get_data():
 	return {
 		'fieldname': 'reference_name',
diff --git a/erpnext/accounts/doctype/exchange_rate_revaluation/test_exchange_rate_revaluation.py b/erpnext/accounts/doctype/exchange_rate_revaluation/test_exchange_rate_revaluation.py
index 3b037d1..e725ce4 100644
--- a/erpnext/accounts/doctype/exchange_rate_revaluation/test_exchange_rate_revaluation.py
+++ b/erpnext/accounts/doctype/exchange_rate_revaluation/test_exchange_rate_revaluation.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestExchangeRateRevaluation(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/exchange_rate_revaluation_account/exchange_rate_revaluation_account.py b/erpnext/accounts/doctype/exchange_rate_revaluation_account/exchange_rate_revaluation_account.py
index 87d7b67..58375dd 100644
--- a/erpnext/accounts/doctype/exchange_rate_revaluation_account/exchange_rate_revaluation_account.py
+++ b/erpnext/accounts/doctype/exchange_rate_revaluation_account/exchange_rate_revaluation_account.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ExchangeRateRevaluationAccount(Document):
 	pass
diff --git a/erpnext/accounts/doctype/finance_book/finance_book.py b/erpnext/accounts/doctype/finance_book/finance_book.py
index bc9fce2..527b8e6 100644
--- a/erpnext/accounts/doctype/finance_book/finance_book.py
+++ b/erpnext/accounts/doctype/finance_book/finance_book.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class FinanceBook(Document):
 	pass
diff --git a/erpnext/accounts/doctype/finance_book/test_finance_book.py b/erpnext/accounts/doctype/finance_book/test_finance_book.py
index bb9a46d..87a8ae2 100644
--- a/erpnext/accounts/doctype/finance_book/test_finance_book.py
+++ b/erpnext/accounts/doctype/finance_book/test_finance_book.py
@@ -2,11 +2,13 @@
 # Copyright (c) 2018, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
-from erpnext.accounts.doctype.journal_entry.test_journal_entry import make_journal_entry
 
+import unittest
 
 import frappe
-import unittest
+
+from erpnext.accounts.doctype.journal_entry.test_journal_entry import make_journal_entry
+
 
 class TestFinanceBook(unittest.TestCase):
 	def test_finance_book(self):
diff --git a/erpnext/accounts/doctype/fiscal_year/fiscal_year.py b/erpnext/accounts/doctype/fiscal_year/fiscal_year.py
index 4255626..6854ac9 100644
--- a/erpnext/accounts/doctype/fiscal_year/fiscal_year.py
+++ b/erpnext/accounts/doctype/fiscal_year/fiscal_year.py
@@ -2,12 +2,13 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe import msgprint, _
-from frappe.utils import getdate, add_days, add_years, cstr
-from dateutil.relativedelta import relativedelta
 
+import frappe
+from dateutil.relativedelta import relativedelta
+from frappe import _, msgprint
 from frappe.model.document import Document
+from frappe.utils import add_days, add_years, cstr, getdate
+
 
 class FiscalYearIncorrectDate(frappe.ValidationError): pass
 
diff --git a/erpnext/accounts/doctype/fiscal_year/test_fiscal_year.py b/erpnext/accounts/doctype/fiscal_year/test_fiscal_year.py
index cec4f44..b0365af 100644
--- a/erpnext/accounts/doctype/fiscal_year/test_fiscal_year.py
+++ b/erpnext/accounts/doctype/fiscal_year/test_fiscal_year.py
@@ -3,7 +3,9 @@
 
 from __future__ import unicode_literals
 
-import frappe, unittest
+import unittest
+
+import frappe
 
 from erpnext.accounts.doctype.fiscal_year.fiscal_year import FiscalYearIncorrectDate
 
diff --git a/erpnext/accounts/doctype/fiscal_year_company/fiscal_year_company.py b/erpnext/accounts/doctype/fiscal_year_company/fiscal_year_company.py
index 8dfc2fa..b9c57f6 100644
--- a/erpnext/accounts/doctype/fiscal_year_company/fiscal_year_company.py
+++ b/erpnext/accounts/doctype/fiscal_year_company/fiscal_year_company.py
@@ -2,8 +2,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class FiscalYearCompany(Document):
 	pass
diff --git a/erpnext/accounts/doctype/gl_entry/gl_entry.py b/erpnext/accounts/doctype/gl_entry/gl_entry.py
index 0844995..1e983b1 100644
--- a/erpnext/accounts/doctype/gl_entry/gl_entry.py
+++ b/erpnext/accounts/doctype/gl_entry/gl_entry.py
@@ -2,20 +2,30 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
+
+import frappe
 from frappe import _
-from frappe.utils import flt, fmt_money, getdate, formatdate, cint
 from frappe.model.document import Document
-from frappe.model.naming import set_name_from_naming_options
 from frappe.model.meta import get_field_precision
-from erpnext.accounts.party import validate_party_gle_currency, validate_party_frozen_disabled
-from erpnext.accounts.utils import get_account_currency
-from erpnext.accounts.utils import get_fiscal_year
-from erpnext.exceptions import InvalidAccountCurrency, InvalidAccountDimensionError, MandatoryAccountDimensionError
-from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import get_checks_for_pl_and_bs_accounts
-from erpnext.accounts.doctype.accounting_dimension_filter.accounting_dimension_filter import get_dimension_filter_map
+from frappe.model.naming import set_name_from_naming_options
+from frappe.utils import flt, fmt_money
 from six import iteritems
 
+import erpnext
+from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import (
+	get_checks_for_pl_and_bs_accounts,
+)
+from erpnext.accounts.doctype.accounting_dimension_filter.accounting_dimension_filter import (
+	get_dimension_filter_map,
+)
+from erpnext.accounts.party import validate_party_frozen_disabled, validate_party_gle_currency
+from erpnext.accounts.utils import get_account_currency, get_fiscal_year
+from erpnext.exceptions import (
+	InvalidAccountCurrency,
+	InvalidAccountDimensionError,
+	MandatoryAccountDimensionError,
+)
+
 exclude_from_linked_with = True
 class GLEntry(Document):
 	def autoname(self):
diff --git a/erpnext/accounts/doctype/gl_entry/test_gl_entry.py b/erpnext/accounts/doctype/gl_entry/test_gl_entry.py
index 4167ca7..1495952 100644
--- a/erpnext/accounts/doctype/gl_entry/test_gl_entry.py
+++ b/erpnext/accounts/doctype/gl_entry/test_gl_entry.py
@@ -2,10 +2,15 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, unittest
+
+import unittest
+
+import frappe
 from frappe.model.naming import parse_naming_series
-from erpnext.accounts.doctype.journal_entry.test_journal_entry import make_journal_entry
+
 from erpnext.accounts.doctype.gl_entry.gl_entry import rename_gle_sle_docs
+from erpnext.accounts.doctype.journal_entry.test_journal_entry import make_journal_entry
+
 
 class TestGLEntry(unittest.TestCase):
 	def test_round_off_entry(self):
diff --git a/erpnext/accounts/doctype/gst_account/gst_account.py b/erpnext/accounts/doctype/gst_account/gst_account.py
index d784849..9ca3f9a 100644
--- a/erpnext/accounts/doctype/gst_account/gst_account.py
+++ b/erpnext/accounts/doctype/gst_account/gst_account.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class GSTAccount(Document):
 	pass
diff --git a/erpnext/accounts/doctype/invoice_discounting/invoice_discounting.py b/erpnext/accounts/doctype/invoice_discounting/invoice_discounting.py
index b73d8bf..8867f1c 100644
--- a/erpnext/accounts/doctype/invoice_discounting/invoice_discounting.py
+++ b/erpnext/accounts/doctype/invoice_discounting/invoice_discounting.py
@@ -3,12 +3,20 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, json, erpnext
+
+import json
+
+import frappe
 from frappe import _
-from frappe.utils import flt, getdate, nowdate, add_days
-from erpnext.controllers.accounts_controller import AccountsController
+from frappe.utils import add_days, flt, getdate, nowdate
+
+import erpnext
+from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import (
+	get_accounting_dimensions,
+)
 from erpnext.accounts.general_ledger import make_gl_entries
-from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import get_accounting_dimensions
+from erpnext.controllers.accounts_controller import AccountsController
+
 
 class InvoiceDiscounting(AccountsController):
 	def validate(self):
diff --git a/erpnext/accounts/doctype/invoice_discounting/invoice_discounting_dashboard.py b/erpnext/accounts/doctype/invoice_discounting/invoice_discounting_dashboard.py
index 6d35ca2..bab8e46 100644
--- a/erpnext/accounts/doctype/invoice_discounting/invoice_discounting_dashboard.py
+++ b/erpnext/accounts/doctype/invoice_discounting/invoice_discounting_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'reference_name',
diff --git a/erpnext/accounts/doctype/invoice_discounting/test_invoice_discounting.py b/erpnext/accounts/doctype/invoice_discounting/test_invoice_discounting.py
index 919dd0c..58aea92 100644
--- a/erpnext/accounts/doctype/invoice_discounting/test_invoice_discounting.py
+++ b/erpnext/accounts/doctype/invoice_discounting/test_invoice_discounting.py
@@ -3,13 +3,17 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
-from frappe.utils import nowdate, add_days, flt
 import unittest
-from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
-from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import get_gl_entries
+
+import frappe
+from frappe.utils import add_days, flt, nowdate
+
 from erpnext.accounts.doctype.account.test_account import create_account
 from erpnext.accounts.doctype.journal_entry.journal_entry import get_payment_entry_against_invoice
+from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
+from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import get_gl_entries
+
+
 class TestInvoiceDiscounting(unittest.TestCase):
 	def setUp(self):
 		self.ar_credit = create_account(account_name="_Test Accounts Receivable Credit", parent_account = "Accounts Receivable - _TC", company="_Test Company")
diff --git a/erpnext/accounts/doctype/item_tax_template/item_tax_template.py b/erpnext/accounts/doctype/item_tax_template/item_tax_template.py
index d9155cb..1e26afe 100644
--- a/erpnext/accounts/doctype/item_tax_template/item_tax_template.py
+++ b/erpnext/accounts/doctype/item_tax_template/item_tax_template.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.document import Document
 from frappe import _
+from frappe.model.document import Document
+
 
 class ItemTaxTemplate(Document):
 	def validate(self):
diff --git a/erpnext/accounts/doctype/item_tax_template/test_item_tax_template.py b/erpnext/accounts/doctype/item_tax_template/test_item_tax_template.py
index acf1e44..46bb300 100644
--- a/erpnext/accounts/doctype/item_tax_template/test_item_tax_template.py
+++ b/erpnext/accounts/doctype/item_tax_template/test_item_tax_template.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestItemTaxTemplate(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/item_tax_template_detail/item_tax_template_detail.py b/erpnext/accounts/doctype/item_tax_template_detail/item_tax_template_detail.py
index d51bed0..aa3b542 100644
--- a/erpnext/accounts/doctype/item_tax_template_detail/item_tax_template_detail.py
+++ b/erpnext/accounts/doctype/item_tax_template_detail/item_tax_template_detail.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ItemTaxTemplateDetail(Document):
 	pass
diff --git a/erpnext/accounts/doctype/journal_entry/journal_entry.py b/erpnext/accounts/doctype/journal_entry/journal_entry.py
index dc341d7..24368f0 100644
--- a/erpnext/accounts/doctype/journal_entry/journal_entry.py
+++ b/erpnext/accounts/doctype/journal_entry/journal_entry.py
@@ -2,19 +2,30 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext, json
-from frappe.utils import cstr, flt, fmt_money, formatdate, getdate, nowdate, cint, get_link_to_form
-from frappe import msgprint, _, scrub
-from erpnext.controllers.accounts_controller import AccountsController
-from erpnext.accounts.utils import get_balance_on, get_stock_accounts, get_stock_and_account_balance, \
-	get_account_currency, check_if_stock_and_account_balance_synced
-from erpnext.accounts.party import get_party_account
-from erpnext.hr.doctype.expense_claim.expense_claim import update_reimbursed_amount
-from erpnext.accounts.doctype.invoice_discounting.invoice_discounting \
-	import get_party_account_based_on_invoice_discounting
-from erpnext.accounts.deferred_revenue import get_deferred_booking_accounts
 
-from six import string_types, iteritems
+import json
+
+import frappe
+from frappe import _, msgprint, scrub
+from frappe.utils import cint, cstr, flt, fmt_money, formatdate, get_link_to_form, nowdate
+from six import iteritems, string_types
+
+import erpnext
+from erpnext.accounts.deferred_revenue import get_deferred_booking_accounts
+from erpnext.accounts.doctype.invoice_discounting.invoice_discounting import (
+	get_party_account_based_on_invoice_discounting,
+)
+from erpnext.accounts.party import get_party_account
+from erpnext.accounts.utils import (
+	check_if_stock_and_account_balance_synced,
+	get_account_currency,
+	get_balance_on,
+	get_stock_accounts,
+	get_stock_and_account_balance,
+)
+from erpnext.controllers.accounts_controller import AccountsController
+from erpnext.hr.doctype.expense_claim.expense_claim import update_reimbursed_amount
+
 
 class StockAccountInvalidTransaction(frappe.ValidationError): pass
 
diff --git a/erpnext/accounts/doctype/journal_entry/test_journal_entry.py b/erpnext/accounts/doctype/journal_entry/test_journal_entry.py
index 5835d46..d03a088 100644
--- a/erpnext/accounts/doctype/journal_entry/test_journal_entry.py
+++ b/erpnext/accounts/doctype/journal_entry/test_journal_entry.py
@@ -2,11 +2,16 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import unittest, frappe
+
+import unittest
+
+import frappe
 from frappe.utils import flt, nowdate
+
 from erpnext.accounts.doctype.account.test_account import get_inventory_account
-from erpnext.exceptions import InvalidAccountCurrency
 from erpnext.accounts.doctype.journal_entry.journal_entry import StockAccountInvalidTransaction
+from erpnext.exceptions import InvalidAccountCurrency
+
 
 class TestJournalEntry(unittest.TestCase):
 	def test_journal_entry_with_against_jv(self):
diff --git a/erpnext/accounts/doctype/journal_entry_account/journal_entry_account.py b/erpnext/accounts/doctype/journal_entry_account/journal_entry_account.py
index 2e77cf2..86d3df4 100644
--- a/erpnext/accounts/doctype/journal_entry_account/journal_entry_account.py
+++ b/erpnext/accounts/doctype/journal_entry_account/journal_entry_account.py
@@ -2,8 +2,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class JournalEntryAccount(Document):
 	pass
diff --git a/erpnext/accounts/doctype/journal_entry_template/journal_entry_template.py b/erpnext/accounts/doctype/journal_entry_template/journal_entry_template.py
index e0b9cbc..f0813f5 100644
--- a/erpnext/accounts/doctype/journal_entry_template/journal_entry_template.py
+++ b/erpnext/accounts/doctype/journal_entry_template/journal_entry_template.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 
+
 class JournalEntryTemplate(Document):
 	pass
 
diff --git a/erpnext/accounts/doctype/journal_entry_template/test_journal_entry_template.py b/erpnext/accounts/doctype/journal_entry_template/test_journal_entry_template.py
index 5f74a20..61fea94 100644
--- a/erpnext/accounts/doctype/journal_entry_template/test_journal_entry_template.py
+++ b/erpnext/accounts/doctype/journal_entry_template/test_journal_entry_template.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestJournalEntryTemplate(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/journal_entry_template_account/journal_entry_template_account.py b/erpnext/accounts/doctype/journal_entry_template_account/journal_entry_template_account.py
index 48e6abb..d0408ca 100644
--- a/erpnext/accounts/doctype/journal_entry_template_account/journal_entry_template_account.py
+++ b/erpnext/accounts/doctype/journal_entry_template_account/journal_entry_template_account.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class JournalEntryTemplateAccount(Document):
 	pass
diff --git a/erpnext/accounts/doctype/loyalty_point_entry/loyalty_point_entry.py b/erpnext/accounts/doctype/loyalty_point_entry/loyalty_point_entry.py
index 3579a1a..0813926 100644
--- a/erpnext/accounts/doctype/loyalty_point_entry/loyalty_point_entry.py
+++ b/erpnext/accounts/doctype/loyalty_point_entry/loyalty_point_entry.py
@@ -3,6 +3,7 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 from frappe.utils import today
diff --git a/erpnext/accounts/doctype/loyalty_point_entry/test_loyalty_point_entry.py b/erpnext/accounts/doctype/loyalty_point_entry/test_loyalty_point_entry.py
index b6e2d57..07856cf 100644
--- a/erpnext/accounts/doctype/loyalty_point_entry/test_loyalty_point_entry.py
+++ b/erpnext/accounts/doctype/loyalty_point_entry/test_loyalty_point_entry.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestLoyaltyPointEntry(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/loyalty_point_entry_redemption/loyalty_point_entry_redemption.py b/erpnext/accounts/doctype/loyalty_point_entry_redemption/loyalty_point_entry_redemption.py
index e4382b6..506e2ce 100644
--- a/erpnext/accounts/doctype/loyalty_point_entry_redemption/loyalty_point_entry_redemption.py
+++ b/erpnext/accounts/doctype/loyalty_point_entry_redemption/loyalty_point_entry_redemption.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class LoyaltyPointEntryRedemption(Document):
 	pass
diff --git a/erpnext/accounts/doctype/loyalty_program/loyalty_program.py b/erpnext/accounts/doctype/loyalty_program/loyalty_program.py
index cb753a3..89ed461 100644
--- a/erpnext/accounts/doctype/loyalty_program/loyalty_program.py
+++ b/erpnext/accounts/doctype/loyalty_program/loyalty_program.py
@@ -3,11 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
 
+import frappe
 from frappe import _
 from frappe.model.document import Document
-from frappe.utils import today, flt
+from frappe.utils import flt, today
+
 
 class LoyaltyProgram(Document):
 	pass
diff --git a/erpnext/accounts/doctype/loyalty_program/loyalty_program_dashboard.py b/erpnext/accounts/doctype/loyalty_program/loyalty_program_dashboard.py
index 189004f..267bbbf 100644
--- a/erpnext/accounts/doctype/loyalty_program/loyalty_program_dashboard.py
+++ b/erpnext/accounts/doctype/loyalty_program/loyalty_program_dashboard.py
@@ -1,7 +1,5 @@
 from __future__ import unicode_literals
 
-from frappe import _
-
 
 def get_data():
 	return {
diff --git a/erpnext/accounts/doctype/loyalty_program/test_loyalty_program.py b/erpnext/accounts/doctype/loyalty_program/test_loyalty_program.py
index 3199488..a039e32 100644
--- a/erpnext/accounts/doctype/loyalty_program/test_loyalty_program.py
+++ b/erpnext/accounts/doctype/loyalty_program/test_loyalty_program.py
@@ -3,12 +3,17 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import today, cint, flt, getdate
-from erpnext.accounts.doctype.loyalty_program.loyalty_program import get_loyalty_program_details_with_points
+
+import frappe
+from frappe.utils import cint, flt, getdate, today
+
+from erpnext.accounts.doctype.loyalty_program.loyalty_program import (
+	get_loyalty_program_details_with_points,
+)
 from erpnext.accounts.party import get_dashboard_info
 
+
 class TestLoyaltyProgram(unittest.TestCase):
 	@classmethod
 	def setUpClass(self):
diff --git a/erpnext/accounts/doctype/loyalty_program_collection/loyalty_program_collection.py b/erpnext/accounts/doctype/loyalty_program_collection/loyalty_program_collection.py
index 42cc38c..4bbcf3a 100644
--- a/erpnext/accounts/doctype/loyalty_program_collection/loyalty_program_collection.py
+++ b/erpnext/accounts/doctype/loyalty_program_collection/loyalty_program_collection.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class LoyaltyProgramCollection(Document):
 	pass
diff --git a/erpnext/accounts/doctype/mode_of_payment/mode_of_payment.py b/erpnext/accounts/doctype/mode_of_payment/mode_of_payment.py
index cea921e..dfe42df 100644
--- a/erpnext/accounts/doctype/mode_of_payment/mode_of_payment.py
+++ b/erpnext/accounts/doctype/mode_of_payment/mode_of_payment.py
@@ -2,10 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
-from frappe.model.document import Document
+import frappe
 from frappe import _
+from frappe.model.document import Document
+
 
 class ModeofPayment(Document):
 	def validate(self):
diff --git a/erpnext/accounts/doctype/mode_of_payment/test_mode_of_payment.py b/erpnext/accounts/doctype/mode_of_payment/test_mode_of_payment.py
index ad6cd47..299687b 100644
--- a/erpnext/accounts/doctype/mode_of_payment/test_mode_of_payment.py
+++ b/erpnext/accounts/doctype/mode_of_payment/test_mode_of_payment.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Mode of Payment')
diff --git a/erpnext/accounts/doctype/mode_of_payment_account/mode_of_payment_account.py b/erpnext/accounts/doctype/mode_of_payment_account/mode_of_payment_account.py
index 5cb195a..40b5f30 100644
--- a/erpnext/accounts/doctype/mode_of_payment_account/mode_of_payment_account.py
+++ b/erpnext/accounts/doctype/mode_of_payment_account/mode_of_payment_account.py
@@ -2,8 +2,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ModeofPaymentAccount(Document):
 	pass
diff --git a/erpnext/accounts/doctype/monthly_distribution/monthly_distribution.py b/erpnext/accounts/doctype/monthly_distribution/monthly_distribution.py
index ad8623f..c0e00d6 100644
--- a/erpnext/accounts/doctype/monthly_distribution/monthly_distribution.py
+++ b/erpnext/accounts/doctype/monthly_distribution/monthly_distribution.py
@@ -2,10 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import (flt, add_months)
 from frappe.model.document import Document
+from frappe.utils import add_months, flt
+
 
 class MonthlyDistribution(Document):
 	@frappe.whitelist()
diff --git a/erpnext/accounts/doctype/monthly_distribution/test_monthly_distribution.py b/erpnext/accounts/doctype/monthly_distribution/test_monthly_distribution.py
index efbf4eb..63faa15 100644
--- a/erpnext/accounts/doctype/monthly_distribution/test_monthly_distribution.py
+++ b/erpnext/accounts/doctype/monthly_distribution/test_monthly_distribution.py
@@ -2,9 +2,11 @@
 # See license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import unittest
 
+import frappe
+
 test_records = frappe.get_test_records('Monthly Distribution')
 
 class TestMonthlyDistribution(unittest.TestCase):
diff --git a/erpnext/accounts/doctype/monthly_distribution_percentage/monthly_distribution_percentage.py b/erpnext/accounts/doctype/monthly_distribution_percentage/monthly_distribution_percentage.py
index d9e8bf9..8ec30c7 100644
--- a/erpnext/accounts/doctype/monthly_distribution_percentage/monthly_distribution_percentage.py
+++ b/erpnext/accounts/doctype/monthly_distribution_percentage/monthly_distribution_percentage.py
@@ -2,8 +2,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class MonthlyDistributionPercentage(Document):
 	pass
diff --git a/erpnext/accounts/doctype/opening_invoice_creation_tool/opening_invoice_creation_tool.py b/erpnext/accounts/doctype/opening_invoice_creation_tool/opening_invoice_creation_tool.py
index 9914b45..2b94bf4 100644
--- a/erpnext/accounts/doctype/opening_invoice_creation_tool/opening_invoice_creation_tool.py
+++ b/erpnext/accounts/doctype/opening_invoice_creation_tool/opening_invoice_creation_tool.py
@@ -3,14 +3,19 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import traceback
 from json import dumps
+
+import frappe
 from frappe import _, scrub
-from frappe.utils import flt, nowdate
 from frappe.model.document import Document
+from frappe.utils import flt, nowdate
 from frappe.utils.background_jobs import enqueue
-from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import get_accounting_dimensions
+
+from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import (
+	get_accounting_dimensions,
+)
 
 
 class OpeningInvoiceCreationTool(Document):
diff --git a/erpnext/accounts/doctype/opening_invoice_creation_tool/test_opening_invoice_creation_tool.py b/erpnext/accounts/doctype/opening_invoice_creation_tool/test_opening_invoice_creation_tool.py
index 8d6de2d..ed3c6a9 100644
--- a/erpnext/accounts/doctype/opening_invoice_creation_tool/test_opening_invoice_creation_tool.py
+++ b/erpnext/accounts/doctype/opening_invoice_creation_tool/test_opening_invoice_creation_tool.py
@@ -3,12 +3,15 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
 from frappe.cache_manager import clear_doctype_cache
 from frappe.custom.doctype.property_setter.property_setter import make_property_setter
-from erpnext.accounts.doctype.opening_invoice_creation_tool.opening_invoice_creation_tool import get_temporary_opening_account
+
+from erpnext.accounts.doctype.opening_invoice_creation_tool.opening_invoice_creation_tool import (
+	get_temporary_opening_account,
+)
 
 test_dependencies = ["Customer", "Supplier"]
 
diff --git a/erpnext/accounts/doctype/opening_invoice_creation_tool_item/opening_invoice_creation_tool_item.py b/erpnext/accounts/doctype/opening_invoice_creation_tool_item/opening_invoice_creation_tool_item.py
index d47c3e9..4008022 100644
--- a/erpnext/accounts/doctype/opening_invoice_creation_tool_item/opening_invoice_creation_tool_item.py
+++ b/erpnext/accounts/doctype/opening_invoice_creation_tool_item/opening_invoice_creation_tool_item.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class OpeningInvoiceCreationToolItem(Document):
 	pass
diff --git a/erpnext/accounts/doctype/party_account/party_account.py b/erpnext/accounts/doctype/party_account/party_account.py
index 21cfb96..08d67c7 100644
--- a/erpnext/accounts/doctype/party_account/party_account.py
+++ b/erpnext/accounts/doctype/party_account/party_account.py
@@ -2,8 +2,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class PartyAccount(Document):
 	pass
diff --git a/erpnext/accounts/doctype/party_link/party_link.py b/erpnext/accounts/doctype/party_link/party_link.py
index 9cbba35..daf667c 100644
--- a/erpnext/accounts/doctype/party_link/party_link.py
+++ b/erpnext/accounts/doctype/party_link/party_link.py
@@ -5,6 +5,7 @@
 from frappe import _
 from frappe.model.document import Document
 
+
 class PartyLink(Document):
 	def validate(self):
 		if self.primary_role not in ['Customer', 'Supplier']:
diff --git a/erpnext/accounts/doctype/party_link/test_party_link.py b/erpnext/accounts/doctype/party_link/test_party_link.py
index a3ea395..2ae3381 100644
--- a/erpnext/accounts/doctype/party_link/test_party_link.py
+++ b/erpnext/accounts/doctype/party_link/test_party_link.py
@@ -4,5 +4,6 @@
 # import frappe
 import unittest
 
+
 class TestPartyLink(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/payment_entry/payment_entry.py b/erpnext/accounts/doctype/payment_entry/payment_entry.py
index f9fa63d..bbbb776 100644
--- a/erpnext/accounts/doctype/payment_entry/payment_entry.py
+++ b/erpnext/accounts/doctype/payment_entry/payment_entry.py
@@ -3,22 +3,37 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext, json
-from frappe import _, scrub, ValidationError, throw
-from frappe.utils import flt, comma_or, nowdate, getdate, cint
-from erpnext.accounts.utils import get_outstanding_invoices, get_account_currency, get_balance_on
-from erpnext.accounts.party import get_party_account
-from erpnext.accounts.doctype.journal_entry.journal_entry import get_default_bank_cash_account
-from erpnext.setup.utils import get_exchange_rate
-from erpnext.accounts.general_ledger import make_gl_entries
-from erpnext.hr.doctype.expense_claim.expense_claim import update_reimbursed_amount
-from erpnext.accounts.doctype.bank_account.bank_account import get_party_bank_account, get_bank_account_details
-from erpnext.controllers.accounts_controller import AccountsController, get_supplier_block_status
-from erpnext.accounts.doctype.invoice_discounting.invoice_discounting import get_party_account_based_on_invoice_discounting
-from erpnext.accounts.doctype.tax_withholding_category.tax_withholding_category import get_party_tax_withholding_details
-from six import string_types, iteritems
 
-from erpnext.controllers.accounts_controller import validate_taxes_and_charges
+import json
+
+import frappe
+from frappe import ValidationError, _, scrub, throw
+from frappe.utils import cint, comma_or, flt, getdate, nowdate
+from six import iteritems, string_types
+
+import erpnext
+from erpnext.accounts.doctype.bank_account.bank_account import (
+	get_bank_account_details,
+	get_party_bank_account,
+)
+from erpnext.accounts.doctype.invoice_discounting.invoice_discounting import (
+	get_party_account_based_on_invoice_discounting,
+)
+from erpnext.accounts.doctype.journal_entry.journal_entry import get_default_bank_cash_account
+from erpnext.accounts.doctype.tax_withholding_category.tax_withholding_category import (
+	get_party_tax_withholding_details,
+)
+from erpnext.accounts.general_ledger import make_gl_entries
+from erpnext.accounts.party import get_party_account
+from erpnext.accounts.utils import get_account_currency, get_balance_on, get_outstanding_invoices
+from erpnext.controllers.accounts_controller import (
+	AccountsController,
+	get_supplier_block_status,
+	validate_taxes_and_charges,
+)
+from erpnext.hr.doctype.expense_claim.expense_claim import update_reimbursed_amount
+from erpnext.setup.utils import get_exchange_rate
+
 
 class InvalidPaymentEntry(ValidationError):
 	pass
diff --git a/erpnext/accounts/doctype/payment_entry/test_payment_entry.py b/erpnext/accounts/doctype/payment_entry/test_payment_entry.py
index dac927b..c90a3c5 100644
--- a/erpnext/accounts/doctype/payment_entry/test_payment_entry.py
+++ b/erpnext/accounts/doctype/payment_entry/test_payment_entry.py
@@ -3,14 +3,25 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
+import frappe
 from frappe.utils import flt, nowdate
-from erpnext.selling.doctype.sales_order.test_sales_order import make_sales_order
-from erpnext.accounts.doctype.payment_entry.payment_entry import get_payment_entry, InvalidPaymentEntry
-from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice, create_sales_invoice_against_cost_center
-from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import make_purchase_invoice, make_purchase_invoice_against_cost_center
+
+from erpnext.accounts.doctype.payment_entry.payment_entry import (
+	InvalidPaymentEntry,
+	get_payment_entry,
+)
+from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import (
+	make_purchase_invoice,
+	make_purchase_invoice_against_cost_center,
+)
+from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import (
+	create_sales_invoice,
+	create_sales_invoice_against_cost_center,
+)
 from erpnext.hr.doctype.expense_claim.test_expense_claim import make_expense_claim
+from erpnext.selling.doctype.sales_order.test_sales_order import make_sales_order
 
 test_dependencies = ["Item"]
 
@@ -324,7 +335,10 @@
 		self.assertEqual(flt(pe.unallocated_amount, 2), 0.0)
 
 	def test_payment_entry_retrieves_last_exchange_rate(self):
-		from erpnext.setup.doctype.currency_exchange.test_currency_exchange import test_records, save_new_records
+		from erpnext.setup.doctype.currency_exchange.test_currency_exchange import (
+			save_new_records,
+			test_records,
+		)
 
 		save_new_records(test_records)
 
diff --git a/erpnext/accounts/doctype/payment_entry_deduction/payment_entry_deduction.py b/erpnext/accounts/doctype/payment_entry_deduction/payment_entry_deduction.py
index d6686bb..9cfed7b 100644
--- a/erpnext/accounts/doctype/payment_entry_deduction/payment_entry_deduction.py
+++ b/erpnext/accounts/doctype/payment_entry_deduction/payment_entry_deduction.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class PaymentEntryDeduction(Document):
 	pass
diff --git a/erpnext/accounts/doctype/payment_entry_reference/payment_entry_reference.py b/erpnext/accounts/doctype/payment_entry_reference/payment_entry_reference.py
index 51f8c06..a686f49 100644
--- a/erpnext/accounts/doctype/payment_entry_reference/payment_entry_reference.py
+++ b/erpnext/accounts/doctype/payment_entry_reference/payment_entry_reference.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class PaymentEntryReference(Document):
 	pass
diff --git a/erpnext/accounts/doctype/payment_gateway_account/payment_gateway_account.py b/erpnext/accounts/doctype/payment_gateway_account/payment_gateway_account.py
index 3529c16..1d8a8ac 100644
--- a/erpnext/accounts/doctype/payment_gateway_account/payment_gateway_account.py
+++ b/erpnext/accounts/doctype/payment_gateway_account/payment_gateway_account.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 
+
 class PaymentGatewayAccount(Document):
 	def autoname(self):
 		self.name = self.payment_gateway + " - " + self.currency
diff --git a/erpnext/accounts/doctype/payment_gateway_account/payment_gateway_account_dashboard.py b/erpnext/accounts/doctype/payment_gateway_account/payment_gateway_account_dashboard.py
index 0898229..2edc1a1 100644
--- a/erpnext/accounts/doctype/payment_gateway_account/payment_gateway_account_dashboard.py
+++ b/erpnext/accounts/doctype/payment_gateway_account/payment_gateway_account_dashboard.py
@@ -1,7 +1,5 @@
 from __future__ import unicode_literals
 
-from frappe import _
-
 
 def get_data():
 	return {
diff --git a/erpnext/accounts/doctype/payment_gateway_account/test_payment_gateway_account.py b/erpnext/accounts/doctype/payment_gateway_account/test_payment_gateway_account.py
index 84c3bc4..f76aa4a 100644
--- a/erpnext/accounts/doctype/payment_gateway_account/test_payment_gateway_account.py
+++ b/erpnext/accounts/doctype/payment_gateway_account/test_payment_gateway_account.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Payment Gateway Account')
diff --git a/erpnext/accounts/doctype/payment_order/payment_order.py b/erpnext/accounts/doctype/payment_order/payment_order.py
index 8d29ae7..e9b5ad9 100644
--- a/erpnext/accounts/doctype/payment_order/payment_order.py
+++ b/erpnext/accounts/doctype/payment_order/payment_order.py
@@ -3,11 +3,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import nowdate
-from erpnext.accounts.party import get_party_account
 from frappe.model.document import Document
+from frappe.utils import nowdate
+
+from erpnext.accounts.party import get_party_account
+
 
 class PaymentOrder(Document):
 	def on_submit(self):
diff --git a/erpnext/accounts/doctype/payment_order/payment_order_dashboard.py b/erpnext/accounts/doctype/payment_order/payment_order_dashboard.py
index a4f3358..d9262be 100644
--- a/erpnext/accounts/doctype/payment_order/payment_order_dashboard.py
+++ b/erpnext/accounts/doctype/payment_order/payment_order_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
 	return {
diff --git a/erpnext/accounts/doctype/payment_order/test_payment_order.py b/erpnext/accounts/doctype/payment_order/test_payment_order.py
index 9ba57ae..6414473 100644
--- a/erpnext/accounts/doctype/payment_order/test_payment_order.py
+++ b/erpnext/accounts/doctype/payment_order/test_payment_order.py
@@ -3,13 +3,19 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
+import frappe
 from frappe.utils import getdate
+
 from erpnext.accounts.doctype.bank_transaction.test_bank_transaction import create_bank_account
-from erpnext.accounts.doctype.payment_entry.payment_entry import get_payment_entry, make_payment_order
+from erpnext.accounts.doctype.payment_entry.payment_entry import (
+	get_payment_entry,
+	make_payment_order,
+)
 from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import make_purchase_invoice
 
+
 class TestPaymentOrder(unittest.TestCase):
 	def setUp(self):
 		create_bank_account()
diff --git a/erpnext/accounts/doctype/payment_order_reference/payment_order_reference.py b/erpnext/accounts/doctype/payment_order_reference/payment_order_reference.py
index b3a9294..4bb98a3 100644
--- a/erpnext/accounts/doctype/payment_order_reference/payment_order_reference.py
+++ b/erpnext/accounts/doctype/payment_order_reference/payment_order_reference.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class PaymentOrderReference(Document):
 	pass
diff --git a/erpnext/accounts/doctype/payment_reconciliation/payment_reconciliation.py b/erpnext/accounts/doctype/payment_reconciliation/payment_reconciliation.py
index 1286bf0..9de79ae 100644
--- a/erpnext/accounts/doctype/payment_reconciliation/payment_reconciliation.py
+++ b/erpnext/accounts/doctype/payment_reconciliation/payment_reconciliation.py
@@ -2,14 +2,17 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
-from frappe.utils import flt, today, getdate, nowdate
-from frappe import msgprint, _
+
+import frappe
+from frappe import _, msgprint
 from frappe.model.document import Document
-from erpnext.accounts.utils import (get_outstanding_invoices,
-	update_reference_in_payment_entry, reconcile_against_document)
+from frappe.utils import flt, getdate, nowdate, today
+
+import erpnext
+from erpnext.accounts.utils import get_outstanding_invoices, reconcile_against_document
 from erpnext.controllers.accounts_controller import get_advance_payment_entries
 
+
 class PaymentReconciliation(Document):
 	@frappe.whitelist()
 	def get_unreconciled_entries(self):
diff --git a/erpnext/accounts/doctype/payment_reconciliation/test_payment_reconciliation.py b/erpnext/accounts/doctype/payment_reconciliation/test_payment_reconciliation.py
index 87eaaee..2271f48 100644
--- a/erpnext/accounts/doctype/payment_reconciliation/test_payment_reconciliation.py
+++ b/erpnext/accounts/doctype/payment_reconciliation/test_payment_reconciliation.py
@@ -4,5 +4,6 @@
 # import frappe
 import unittest
 
+
 class TestPaymentReconciliation(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/payment_reconciliation_allocation/payment_reconciliation_allocation.py b/erpnext/accounts/doctype/payment_reconciliation_allocation/payment_reconciliation_allocation.py
index 0fb63b1..9db8e62 100644
--- a/erpnext/accounts/doctype/payment_reconciliation_allocation/payment_reconciliation_allocation.py
+++ b/erpnext/accounts/doctype/payment_reconciliation_allocation/payment_reconciliation_allocation.py
@@ -4,5 +4,6 @@
 # import frappe
 from frappe.model.document import Document
 
+
 class PaymentReconciliationAllocation(Document):
 	pass
diff --git a/erpnext/accounts/doctype/payment_reconciliation_invoice/payment_reconciliation_invoice.py b/erpnext/accounts/doctype/payment_reconciliation_invoice/payment_reconciliation_invoice.py
index 800d800..5ac1855 100644
--- a/erpnext/accounts/doctype/payment_reconciliation_invoice/payment_reconciliation_invoice.py
+++ b/erpnext/accounts/doctype/payment_reconciliation_invoice/payment_reconciliation_invoice.py
@@ -2,8 +2,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class PaymentReconciliationInvoice(Document):
 	pass
diff --git a/erpnext/accounts/doctype/payment_reconciliation_payment/payment_reconciliation_payment.py b/erpnext/accounts/doctype/payment_reconciliation_payment/payment_reconciliation_payment.py
index c76f785..78c84ff 100644
--- a/erpnext/accounts/doctype/payment_reconciliation_payment/payment_reconciliation_payment.py
+++ b/erpnext/accounts/doctype/payment_reconciliation_payment/payment_reconciliation_payment.py
@@ -2,8 +2,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class PaymentReconciliationPayment(Document):
 	pass
diff --git a/erpnext/accounts/doctype/payment_request/payment_request.py b/erpnext/accounts/doctype/payment_request/payment_request.py
index f83cb37..1570b49 100644
--- a/erpnext/accounts/doctype/payment_request/payment_request.py
+++ b/erpnext/accounts/doctype/payment_request/payment_request.py
@@ -3,18 +3,25 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import json
+
 import frappe
 from frappe import _
+from frappe.integrations.utils import get_payment_gateway_controller
 from frappe.model.document import Document
-from frappe.utils import flt, nowdate, get_url
+from frappe.utils import flt, get_url, nowdate
+from frappe.utils.background_jobs import enqueue
+
+from erpnext.accounts.doctype.payment_entry.payment_entry import (
+	get_company_defaults,
+	get_payment_entry,
+)
+from erpnext.accounts.doctype.subscription_plan.subscription_plan import get_plan_rate
 from erpnext.accounts.party import get_party_account, get_party_bank_account
 from erpnext.accounts.utils import get_account_currency
-from erpnext.accounts.doctype.payment_entry.payment_entry import get_payment_entry, get_company_defaults
-from frappe.integrations.utils import get_payment_gateway_controller
-from frappe.utils.background_jobs import enqueue
 from erpnext.erpnext_integrations.stripe_integration import create_stripe_subscription
-from erpnext.accounts.doctype.subscription_plan.subscription_plan import get_plan_rate
+
 
 class PaymentRequest(Document):
 	def validate(self):
diff --git a/erpnext/accounts/doctype/payment_request/test_payment_request.py b/erpnext/accounts/doctype/payment_request/test_payment_request.py
index ad6ff6f..c97c873 100644
--- a/erpnext/accounts/doctype/payment_request/test_payment_request.py
+++ b/erpnext/accounts/doctype/payment_request/test_payment_request.py
@@ -3,11 +3,13 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from erpnext.selling.doctype.sales_order.test_sales_order import make_sales_order
+
+import frappe
+
 from erpnext.accounts.doctype.payment_request.payment_request import make_payment_request
 from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
+from erpnext.selling.doctype.sales_order.test_sales_order import make_sales_order
 from erpnext.setup.utils import get_exchange_rate
 
 test_dependencies = ["Currency Exchange", "Journal Entry", "Contact", "Address"]
diff --git a/erpnext/accounts/doctype/payment_schedule/payment_schedule.py b/erpnext/accounts/doctype/payment_schedule/payment_schedule.py
index 4174017..33d5efa 100644
--- a/erpnext/accounts/doctype/payment_schedule/payment_schedule.py
+++ b/erpnext/accounts/doctype/payment_schedule/payment_schedule.py
@@ -3,6 +3,7 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
 
diff --git a/erpnext/accounts/doctype/payment_term/payment_term.py b/erpnext/accounts/doctype/payment_term/payment_term.py
index 5d4df05..a04c183 100644
--- a/erpnext/accounts/doctype/payment_term/payment_term.py
+++ b/erpnext/accounts/doctype/payment_term/payment_term.py
@@ -3,6 +3,7 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
 
diff --git a/erpnext/accounts/doctype/payment_term/test_payment_term.py b/erpnext/accounts/doctype/payment_term/test_payment_term.py
index d9baa59..bc0645f 100644
--- a/erpnext/accounts/doctype/payment_term/test_payment_term.py
+++ b/erpnext/accounts/doctype/payment_term/test_payment_term.py
@@ -2,6 +2,7 @@
 # Copyright (c) 2017, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
 
 
diff --git a/erpnext/accounts/doctype/payment_terms_template/payment_terms_template.py b/erpnext/accounts/doctype/payment_terms_template/payment_terms_template.py
index 39627eb..3568591 100644
--- a/erpnext/accounts/doctype/payment_terms_template/payment_terms_template.py
+++ b/erpnext/accounts/doctype/payment_terms_template/payment_terms_template.py
@@ -5,9 +5,9 @@
 from __future__ import unicode_literals
 
 import frappe
-from frappe.model.document import Document
-from frappe.utils import flt, cint
 from frappe import _
+from frappe.model.document import Document
+from frappe.utils import flt
 
 
 class PaymentTermsTemplate(Document):
diff --git a/erpnext/accounts/doctype/payment_terms_template/test_payment_terms_template.py b/erpnext/accounts/doctype/payment_terms_template/test_payment_terms_template.py
index 6daaf1e..2052a50 100644
--- a/erpnext/accounts/doctype/payment_terms_template/test_payment_terms_template.py
+++ b/erpnext/accounts/doctype/payment_terms_template/test_payment_terms_template.py
@@ -2,6 +2,7 @@
 # Copyright (c) 2017, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
 
 import frappe
diff --git a/erpnext/accounts/doctype/payment_terms_template_detail/payment_terms_template_detail.py b/erpnext/accounts/doctype/payment_terms_template_detail/payment_terms_template_detail.py
index 54c0fda..c857a88 100644
--- a/erpnext/accounts/doctype/payment_terms_template_detail/payment_terms_template_detail.py
+++ b/erpnext/accounts/doctype/payment_terms_template_detail/payment_terms_template_detail.py
@@ -3,6 +3,7 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
 
diff --git a/erpnext/accounts/doctype/period_closing_voucher/period_closing_voucher.py b/erpnext/accounts/doctype/period_closing_voucher/period_closing_voucher.py
index ebe55f6..888bf9f 100644
--- a/erpnext/accounts/doctype/period_closing_voucher/period_closing_voucher.py
+++ b/erpnext/accounts/doctype/period_closing_voucher/period_closing_voucher.py
@@ -2,13 +2,18 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import flt
 from frappe import _
+from frappe.utils import flt
+
+from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import (
+	get_accounting_dimensions,
+	get_dimensions,
+)
 from erpnext.accounts.utils import get_account_currency
 from erpnext.controllers.accounts_controller import AccountsController
-from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import (get_accounting_dimensions,
-	get_dimensions)
+
 
 class PeriodClosingVoucher(AccountsController):
 	def validate(self):
diff --git a/erpnext/accounts/doctype/period_closing_voucher/test_period_closing_voucher.py b/erpnext/accounts/doctype/period_closing_voucher/test_period_closing_voucher.py
index 2a636bb..2d417a4 100644
--- a/erpnext/accounts/doctype/period_closing_voucher/test_period_closing_voucher.py
+++ b/erpnext/accounts/doctype/period_closing_voucher/test_period_closing_voucher.py
@@ -3,13 +3,17 @@
 
 
 from __future__ import unicode_literals
+
 import unittest
+
 import frappe
-from frappe.utils import flt, today
-from erpnext.accounts.utils import get_fiscal_year, now
-from erpnext.accounts.doctype.journal_entry.test_journal_entry import make_journal_entry
+from frappe.utils import today
+
 from erpnext.accounts.doctype.finance_book.test_finance_book import create_finance_book
+from erpnext.accounts.doctype.journal_entry.test_journal_entry import make_journal_entry
 from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
+from erpnext.accounts.utils import get_fiscal_year, now
+
 
 class TestPeriodClosingVoucher(unittest.TestCase):
 	def test_closing_entry(self):
diff --git a/erpnext/accounts/doctype/pos_closing_entry/pos_closing_entry.py b/erpnext/accounts/doctype/pos_closing_entry/pos_closing_entry.py
index 8252872..896ebdf 100644
--- a/erpnext/accounts/doctype/pos_closing_entry/pos_closing_entry.py
+++ b/erpnext/accounts/doctype/pos_closing_entry/pos_closing_entry.py
@@ -3,13 +3,17 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-import json
 from frappe import _
-from frappe.utils import get_datetime, flt
+from frappe.utils import flt, get_datetime
+
+from erpnext.accounts.doctype.pos_invoice_merge_log.pos_invoice_merge_log import (
+	consolidate_pos_invoices,
+	unconsolidate_pos_invoices,
+)
 from erpnext.controllers.status_updater import StatusUpdater
-from erpnext.controllers.taxes_and_totals import get_itemised_tax_breakup_data
-from erpnext.accounts.doctype.pos_invoice_merge_log.pos_invoice_merge_log import consolidate_pos_invoices, unconsolidate_pos_invoices
+
 
 class POSClosingEntry(StatusUpdater):
 	def validate(self):
diff --git a/erpnext/accounts/doctype/pos_closing_entry/test_pos_closing_entry.py b/erpnext/accounts/doctype/pos_closing_entry/test_pos_closing_entry.py
index 5b18ebb..44c87d6 100644
--- a/erpnext/accounts/doctype/pos_closing_entry/test_pos_closing_entry.py
+++ b/erpnext/accounts/doctype/pos_closing_entry/test_pos_closing_entry.py
@@ -2,14 +2,19 @@
 # Copyright (c) 2018, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
-import frappe
+
 import unittest
-from frappe.utils import nowdate
-from erpnext.stock.doctype.stock_entry.test_stock_entry import make_stock_entry
+
+import frappe
+
+from erpnext.accounts.doctype.pos_closing_entry.pos_closing_entry import (
+	make_closing_entry_from_opening,
+)
 from erpnext.accounts.doctype.pos_invoice.test_pos_invoice import create_pos_invoice
-from erpnext.accounts.doctype.pos_closing_entry.pos_closing_entry import make_closing_entry_from_opening
 from erpnext.accounts.doctype.pos_opening_entry.test_pos_opening_entry import create_opening_entry
 from erpnext.accounts.doctype.pos_profile.test_pos_profile import make_pos_profile
+from erpnext.stock.doctype.stock_entry.test_stock_entry import make_stock_entry
+
 
 class TestPOSClosingEntry(unittest.TestCase):
 	def setUp(self):
diff --git a/erpnext/accounts/doctype/pos_closing_entry_detail/pos_closing_entry_detail.py b/erpnext/accounts/doctype/pos_closing_entry_detail/pos_closing_entry_detail.py
index 46b6c77..4293abd 100644
--- a/erpnext/accounts/doctype/pos_closing_entry_detail/pos_closing_entry_detail.py
+++ b/erpnext/accounts/doctype/pos_closing_entry_detail/pos_closing_entry_detail.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class POSClosingEntryDetail(Document):
 	pass
diff --git a/erpnext/accounts/doctype/pos_closing_entry_taxes/pos_closing_entry_taxes.py b/erpnext/accounts/doctype/pos_closing_entry_taxes/pos_closing_entry_taxes.py
index f72d9a6..74cf754 100644
--- a/erpnext/accounts/doctype/pos_closing_entry_taxes/pos_closing_entry_taxes.py
+++ b/erpnext/accounts/doctype/pos_closing_entry_taxes/pos_closing_entry_taxes.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class POSClosingEntryTaxes(Document):
 	pass
diff --git a/erpnext/accounts/doctype/pos_customer_group/pos_customer_group.py b/erpnext/accounts/doctype/pos_customer_group/pos_customer_group.py
index 85c1c9f..570eb9e 100644
--- a/erpnext/accounts/doctype/pos_customer_group/pos_customer_group.py
+++ b/erpnext/accounts/doctype/pos_customer_group/pos_customer_group.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class POSCustomerGroup(Document):
 	pass
diff --git a/erpnext/accounts/doctype/pos_field/pos_field.py b/erpnext/accounts/doctype/pos_field/pos_field.py
index b4720b3..00faebb 100644
--- a/erpnext/accounts/doctype/pos_field/pos_field.py
+++ b/erpnext/accounts/doctype/pos_field/pos_field.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class POSField(Document):
 	pass
diff --git a/erpnext/accounts/doctype/pos_invoice/pos_invoice.py b/erpnext/accounts/doctype/pos_invoice/pos_invoice.py
index 034a217..d6e41e6 100644
--- a/erpnext/accounts/doctype/pos_invoice/pos_invoice.py
+++ b/erpnext/accounts/doctype/pos_invoice/pos_invoice.py
@@ -3,19 +3,24 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.model.document import Document
-from erpnext.accounts.utils import get_account_currency
-from erpnext.accounts.party import get_party_account, get_due_date
-from frappe.utils import cint, flt, getdate, nowdate, get_link_to_form
-from erpnext.accounts.doctype.payment_request.payment_request import make_payment_request
-from erpnext.accounts.doctype.loyalty_program.loyalty_program import validate_loyalty_points
-from erpnext.stock.doctype.serial_no.serial_no import get_pos_reserved_serial_nos, get_serial_nos
-from erpnext.accounts.doctype.sales_invoice.sales_invoice import SalesInvoice, get_bank_cash_account, update_multi_mode_option, get_mode_of_payment_info
-
+from frappe.utils import cint, flt, get_link_to_form, getdate, nowdate
 from six import iteritems
 
+from erpnext.accounts.doctype.loyalty_program.loyalty_program import validate_loyalty_points
+from erpnext.accounts.doctype.payment_request.payment_request import make_payment_request
+from erpnext.accounts.doctype.sales_invoice.sales_invoice import (
+	SalesInvoice,
+	get_bank_cash_account,
+	get_mode_of_payment_info,
+	update_multi_mode_option,
+)
+from erpnext.accounts.party import get_due_date, get_party_account
+from erpnext.stock.doctype.serial_no.serial_no import get_pos_reserved_serial_nos, get_serial_nos
+
+
 class POSInvoice(SalesInvoice):
 	def __init__(self, *args, **kwargs):
 		super(POSInvoice, self).__init__(*args, **kwargs)
@@ -309,7 +314,7 @@
 
 	def set_pos_fields(self, for_validate=False):
 		"""Set retail related fields from POS Profiles"""
-		from erpnext.stock.get_item_details import get_pos_profile_item_details, get_pos_profile
+		from erpnext.stock.get_item_details import get_pos_profile, get_pos_profile_item_details
 		if not self.pos_profile:
 			pos_profile = get_pos_profile(self.company) or {}
 			if not pos_profile:
@@ -519,6 +524,7 @@
 @frappe.whitelist()
 def make_merge_log(invoices):
 	import json
+
 	from six import string_types
 
 	if isinstance(invoices, string_types):
diff --git a/erpnext/accounts/doctype/pos_invoice/test_pos_invoice.py b/erpnext/accounts/doctype/pos_invoice/test_pos_invoice.py
index d2527fb..e6e0dd2 100644
--- a/erpnext/accounts/doctype/pos_invoice/test_pos_invoice.py
+++ b/erpnext/accounts/doctype/pos_invoice/test_pos_invoice.py
@@ -3,14 +3,18 @@
 # See license.txt
 from __future__ import unicode_literals
 
+import copy
+import unittest
+
 import frappe
-import unittest, copy, time
-from erpnext.accounts.doctype.pos_profile.test_pos_profile import make_pos_profile
+
 from erpnext.accounts.doctype.pos_invoice.pos_invoice import make_sales_return
-from erpnext.stock.doctype.stock_entry.stock_entry_utils import make_stock_entry
-from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import make_purchase_receipt
-from erpnext.stock.doctype.item.test_item import make_item
+from erpnext.accounts.doctype.pos_profile.test_pos_profile import make_pos_profile
 from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
+from erpnext.stock.doctype.item.test_item import make_item
+from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import make_purchase_receipt
+from erpnext.stock.doctype.stock_entry.stock_entry_utils import make_stock_entry
+
 
 class TestPOSInvoice(unittest.TestCase):
 	@classmethod
@@ -213,8 +217,8 @@
 		self.assertEqual(pos_return.get('payments')[1].amount, -500)
 
 	def test_pos_return_for_serialized_item(self):
-		from erpnext.stock.doctype.stock_entry.test_stock_entry import make_serialized_item
 		from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
+		from erpnext.stock.doctype.stock_entry.test_stock_entry import make_serialized_item
 
 		se = make_serialized_item(company='_Test Company',
 			target_warehouse="Stores - _TC", cost_center='Main - _TC', expense_account='Cost of Goods Sold - _TC')
@@ -239,8 +243,8 @@
 		self.assertEqual(pos_return.get('items')[0].serial_no, serial_nos[0])
 
 	def test_partial_pos_returns(self):
-		from erpnext.stock.doctype.stock_entry.test_stock_entry import make_serialized_item
 		from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
+		from erpnext.stock.doctype.stock_entry.test_stock_entry import make_serialized_item
 
 		se = make_serialized_item(company='_Test Company',
 			target_warehouse="Stores - _TC", cost_center='Main - _TC', expense_account='Cost of Goods Sold - _TC')
@@ -293,8 +297,8 @@
 		self.assertRaises(frappe.ValidationError, inv.insert)
 
 	def test_serialized_item_transaction(self):
-		from erpnext.stock.doctype.stock_entry.test_stock_entry import make_serialized_item
 		from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
+		from erpnext.stock.doctype.stock_entry.test_stock_entry import make_serialized_item
 
 		se = make_serialized_item(company='_Test Company',
 			target_warehouse="Stores - _TC", cost_center='Main - _TC', expense_account='Cost of Goods Sold - _TC')
@@ -324,8 +328,8 @@
 		self.assertRaises(frappe.ValidationError, pos2.submit)
 
 	def test_delivered_serialized_item_transaction(self):
-		from erpnext.stock.doctype.stock_entry.test_stock_entry import make_serialized_item
 		from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
+		from erpnext.stock.doctype.stock_entry.test_stock_entry import make_serialized_item
 
 		se = make_serialized_item(company='_Test Company',
 			target_warehouse="Stores - _TC", cost_center='Main - _TC', expense_account='Cost of Goods Sold - _TC')
@@ -353,8 +357,10 @@
 		self.assertRaises(frappe.ValidationError, pos2.submit)
 
 	def test_loyalty_points(self):
+		from erpnext.accounts.doctype.loyalty_program.loyalty_program import (
+			get_loyalty_program_details_with_points,
+		)
 		from erpnext.accounts.doctype.loyalty_program.test_loyalty_program import create_records
-		from erpnext.accounts.doctype.loyalty_program.loyalty_program import get_loyalty_program_details_with_points
 
 		create_records()
 		frappe.db.set_value("Customer", "Test Loyalty Customer", "loyalty_program", "Test Single Loyalty")
@@ -374,7 +380,10 @@
 		self.assertEqual(after_cancel_lp_details.loyalty_points, before_lp_details.loyalty_points)
 
 	def test_loyalty_points_redeemption(self):
-		from erpnext.accounts.doctype.loyalty_program.loyalty_program import get_loyalty_program_details_with_points
+		from erpnext.accounts.doctype.loyalty_program.loyalty_program import (
+			get_loyalty_program_details_with_points,
+		)
+
 		# add 10 loyalty points
 		create_pos_invoice(customer="Test Loyalty Customer", rate=10000)
 
@@ -392,8 +401,12 @@
 		self.assertEqual(after_redeem_lp_details.loyalty_points, 9)
 
 	def test_merging_into_sales_invoice_with_discount(self):
-		from erpnext.accounts.doctype.pos_closing_entry.test_pos_closing_entry import init_user_and_profile
-		from erpnext.accounts.doctype.pos_invoice_merge_log.pos_invoice_merge_log import consolidate_pos_invoices
+		from erpnext.accounts.doctype.pos_closing_entry.test_pos_closing_entry import (
+			init_user_and_profile,
+		)
+		from erpnext.accounts.doctype.pos_invoice_merge_log.pos_invoice_merge_log import (
+			consolidate_pos_invoices,
+		)
 
 		frappe.db.sql("delete from `tabPOS Invoice`")
 		test_user, pos_profile = init_user_and_profile()
@@ -416,8 +429,12 @@
 		self.assertEqual(rounded_total, 3470)
 
 	def test_merging_into_sales_invoice_with_discount_and_inclusive_tax(self):
-		from erpnext.accounts.doctype.pos_closing_entry.test_pos_closing_entry import init_user_and_profile
-		from erpnext.accounts.doctype.pos_invoice_merge_log.pos_invoice_merge_log import consolidate_pos_invoices
+		from erpnext.accounts.doctype.pos_closing_entry.test_pos_closing_entry import (
+			init_user_and_profile,
+		)
+		from erpnext.accounts.doctype.pos_invoice_merge_log.pos_invoice_merge_log import (
+			consolidate_pos_invoices,
+		)
 
 		frappe.db.sql("delete from `tabPOS Invoice`")
 		test_user, pos_profile = init_user_and_profile()
@@ -457,8 +474,12 @@
 		self.assertEqual(rounded_total, 840)
 
 	def test_merging_with_validate_selling_price(self):
-		from erpnext.accounts.doctype.pos_closing_entry.test_pos_closing_entry import init_user_and_profile
-		from erpnext.accounts.doctype.pos_invoice_merge_log.pos_invoice_merge_log import consolidate_pos_invoices
+		from erpnext.accounts.doctype.pos_closing_entry.test_pos_closing_entry import (
+			init_user_and_profile,
+		)
+		from erpnext.accounts.doctype.pos_invoice_merge_log.pos_invoice_merge_log import (
+			consolidate_pos_invoices,
+		)
 
 		if not frappe.db.get_single_value("Selling Settings", "validate_selling_price"):
 			frappe.db.set_value("Selling Settings", "Selling Settings", "validate_selling_price", 1)
diff --git a/erpnext/accounts/doctype/pos_invoice_item/pos_invoice_item.py b/erpnext/accounts/doctype/pos_invoice_item/pos_invoice_item.py
index 92ce61b..99e4719 100644
--- a/erpnext/accounts/doctype/pos_invoice_item/pos_invoice_item.py
+++ b/erpnext/accounts/doctype/pos_invoice_item/pos_invoice_item.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class POSInvoiceItem(Document):
 	pass
diff --git a/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.py b/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.py
index e50d437..0be8ca7 100644
--- a/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.py
+++ b/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.py
@@ -3,17 +3,19 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
+import json
+
 import frappe
+import six
 from frappe import _
-from frappe.model import default_fields
+from frappe.core.page.background_jobs.background_jobs import get_info
 from frappe.model.document import Document
+from frappe.model.mapper import map_child_doc, map_doc
 from frappe.utils import flt, getdate, nowdate
 from frappe.utils.background_jobs import enqueue
-from frappe.model.mapper import map_doc, map_child_doc
 from frappe.utils.scheduler import is_scheduler_inactive
-from frappe.core.page.background_jobs.background_jobs import get_info
-import json
-import six
+
 
 class POSInvoiceMergeLog(Document):
 	def validate(self):
diff --git a/erpnext/accounts/doctype/pos_invoice_merge_log/test_pos_invoice_merge_log.py b/erpnext/accounts/doctype/pos_invoice_merge_log/test_pos_invoice_merge_log.py
index 1b96594..c531bb9 100644
--- a/erpnext/accounts/doctype/pos_invoice_merge_log/test_pos_invoice_merge_log.py
+++ b/erpnext/accounts/doctype/pos_invoice_merge_log/test_pos_invoice_merge_log.py
@@ -3,13 +3,18 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
-import unittest
 import json
-from erpnext.accounts.doctype.pos_invoice.test_pos_invoice import create_pos_invoice
-from erpnext.accounts.doctype.pos_invoice.pos_invoice import make_sales_return
-from erpnext.accounts.doctype.pos_invoice_merge_log.pos_invoice_merge_log import consolidate_pos_invoices
+import unittest
+
+import frappe
+
 from erpnext.accounts.doctype.pos_closing_entry.test_pos_closing_entry import init_user_and_profile
+from erpnext.accounts.doctype.pos_invoice.pos_invoice import make_sales_return
+from erpnext.accounts.doctype.pos_invoice.test_pos_invoice import create_pos_invoice
+from erpnext.accounts.doctype.pos_invoice_merge_log.pos_invoice_merge_log import (
+	consolidate_pos_invoices,
+)
+
 
 class TestPOSInvoiceMergeLog(unittest.TestCase):
 	def test_consolidated_invoice_creation(self):
diff --git a/erpnext/accounts/doctype/pos_invoice_reference/pos_invoice_reference.py b/erpnext/accounts/doctype/pos_invoice_reference/pos_invoice_reference.py
index 4c45265..9bce082 100644
--- a/erpnext/accounts/doctype/pos_invoice_reference/pos_invoice_reference.py
+++ b/erpnext/accounts/doctype/pos_invoice_reference/pos_invoice_reference.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class POSInvoiceReference(Document):
 	pass
diff --git a/erpnext/accounts/doctype/pos_item_group/pos_item_group.py b/erpnext/accounts/doctype/pos_item_group/pos_item_group.py
index ceaa57b..b5ff794 100644
--- a/erpnext/accounts/doctype/pos_item_group/pos_item_group.py
+++ b/erpnext/accounts/doctype/pos_item_group/pos_item_group.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class POSItemGroup(Document):
 	pass
diff --git a/erpnext/accounts/doctype/pos_opening_entry/pos_opening_entry.py b/erpnext/accounts/doctype/pos_opening_entry/pos_opening_entry.py
index 3318fef..979479f 100644
--- a/erpnext/accounts/doctype/pos_opening_entry/pos_opening_entry.py
+++ b/erpnext/accounts/doctype/pos_opening_entry/pos_opening_entry.py
@@ -3,11 +3,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import cint, get_link_to_form
+
 from erpnext.controllers.status_updater import StatusUpdater
 
+
 class POSOpeningEntry(StatusUpdater):
 	def validate(self):
 		self.validate_pos_profile_and_cashier()
diff --git a/erpnext/accounts/doctype/pos_opening_entry/test_pos_opening_entry.py b/erpnext/accounts/doctype/pos_opening_entry/test_pos_opening_entry.py
index c115be5..35a2b58 100644
--- a/erpnext/accounts/doctype/pos_opening_entry/test_pos_opening_entry.py
+++ b/erpnext/accounts/doctype/pos_opening_entry/test_pos_opening_entry.py
@@ -3,9 +3,11 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
+
 class TestPOSOpeningEntry(unittest.TestCase):
 	pass
 
diff --git a/erpnext/accounts/doctype/pos_opening_entry_detail/pos_opening_entry_detail.py b/erpnext/accounts/doctype/pos_opening_entry_detail/pos_opening_entry_detail.py
index 5557062..be5d876 100644
--- a/erpnext/accounts/doctype/pos_opening_entry_detail/pos_opening_entry_detail.py
+++ b/erpnext/accounts/doctype/pos_opening_entry_detail/pos_opening_entry_detail.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class POSOpeningEntryDetail(Document):
 	pass
diff --git a/erpnext/accounts/doctype/pos_payment_method/pos_payment_method.py b/erpnext/accounts/doctype/pos_payment_method/pos_payment_method.py
index 8a46d84..851d8ef 100644
--- a/erpnext/accounts/doctype/pos_payment_method/pos_payment_method.py
+++ b/erpnext/accounts/doctype/pos_payment_method/pos_payment_method.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class POSPaymentMethod(Document):
 	pass
diff --git a/erpnext/accounts/doctype/pos_profile/pos_profile.py b/erpnext/accounts/doctype/pos_profile/pos_profile.py
index cf7ed26..b64e2ed 100644
--- a/erpnext/accounts/doctype/pos_profile/pos_profile.py
+++ b/erpnext/accounts/doctype/pos_profile/pos_profile.py
@@ -2,11 +2,13 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe import msgprint, _
-from frappe.utils import cint, now, get_link_to_form
-from six import iteritems
+from frappe import _, msgprint
 from frappe.model.document import Document
+from frappe.utils import get_link_to_form, now
+from six import iteritems
+
 
 class POSProfile(Document):
 	def validate(self):
diff --git a/erpnext/accounts/doctype/pos_profile/test_pos_profile.py b/erpnext/accounts/doctype/pos_profile/test_pos_profile.py
index 0033965..83ecfb4 100644
--- a/erpnext/accounts/doctype/pos_profile/test_pos_profile.py
+++ b/erpnext/accounts/doctype/pos_profile/test_pos_profile.py
@@ -3,10 +3,12 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from erpnext.stock.get_item_details import get_pos_profile
+
+import frappe
+
 from erpnext.accounts.doctype.pos_profile.pos_profile import get_child_nodes
+from erpnext.stock.get_item_details import get_pos_profile
 
 test_dependencies = ['Item']
 
diff --git a/erpnext/accounts/doctype/pos_profile_user/pos_profile_user.py b/erpnext/accounts/doctype/pos_profile_user/pos_profile_user.py
index d77cdde..404c4ab 100644
--- a/erpnext/accounts/doctype/pos_profile_user/pos_profile_user.py
+++ b/erpnext/accounts/doctype/pos_profile_user/pos_profile_user.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class POSProfileUser(Document):
 	pass
diff --git a/erpnext/accounts/doctype/pos_profile_user/test_pos_profile_user.py b/erpnext/accounts/doctype/pos_profile_user/test_pos_profile_user.py
index 5c69ab1..dca3556 100644
--- a/erpnext/accounts/doctype/pos_profile_user/test_pos_profile_user.py
+++ b/erpnext/accounts/doctype/pos_profile_user/test_pos_profile_user.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestPOSProfileUser(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/pos_search_fields/pos_search_fields.py b/erpnext/accounts/doctype/pos_search_fields/pos_search_fields.py
index 720ea77..32f9f92 100644
--- a/erpnext/accounts/doctype/pos_search_fields/pos_search_fields.py
+++ b/erpnext/accounts/doctype/pos_search_fields/pos_search_fields.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class POSSearchFields(Document):
 	pass
diff --git a/erpnext/accounts/doctype/pos_settings/pos_settings.py b/erpnext/accounts/doctype/pos_settings/pos_settings.py
index d925dd9..5c5aaa0 100644
--- a/erpnext/accounts/doctype/pos_settings/pos_settings.py
+++ b/erpnext/accounts/doctype/pos_settings/pos_settings.py
@@ -3,9 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class POSSettings(Document):
 	def validate(self):
 		pass
diff --git a/erpnext/accounts/doctype/pos_settings/test_pos_settings.py b/erpnext/accounts/doctype/pos_settings/test_pos_settings.py
index a3df108..949fed7 100644
--- a/erpnext/accounts/doctype/pos_settings/test_pos_settings.py
+++ b/erpnext/accounts/doctype/pos_settings/test_pos_settings.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestPOSSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/pricing_rule/pricing_rule.py b/erpnext/accounts/doctype/pricing_rule/pricing_rule.py
index ccfb29f..e5bf3b8 100644
--- a/erpnext/accounts/doctype/pricing_rule/pricing_rule.py
+++ b/erpnext/accounts/doctype/pricing_rule/pricing_rule.py
@@ -3,15 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
-import json
+
 import copy
+import json
 import re
 
-from frappe import throw, _
-from frappe.utils import flt, cint, getdate
+import frappe
+from frappe import _, throw
 from frappe.model.document import Document
-
+from frappe.utils import cint, flt, getdate
 from six import string_types
 
 apply_on_dict = {"Item Code": "items",
@@ -228,8 +228,12 @@
 	return item_details
 
 def get_pricing_rule_for_item(args, price_list_rate=0, doc=None, for_validate=False):
-	from erpnext.accounts.doctype.pricing_rule.utils import (get_pricing_rules,
-			get_applied_pricing_rules, get_pricing_rule_items, get_product_discount_rule)
+	from erpnext.accounts.doctype.pricing_rule.utils import (
+		get_applied_pricing_rules,
+		get_pricing_rule_items,
+		get_pricing_rules,
+		get_product_discount_rule,
+	)
 
 	if isinstance(doc, string_types):
 		doc = json.loads(doc)
@@ -389,8 +393,10 @@
 				if pricing_rule else args.get(field, 0))
 
 def remove_pricing_rule_for_item(pricing_rules, item_details, item_code=None):
-	from erpnext.accounts.doctype.pricing_rule.utils import (get_applied_pricing_rules,
-		get_pricing_rule_items)
+	from erpnext.accounts.doctype.pricing_rule.utils import (
+		get_applied_pricing_rules,
+		get_pricing_rule_items,
+	)
 	for d in get_applied_pricing_rules(pricing_rules):
 		if not d or not frappe.db.exists("Pricing Rule", d): continue
 		pricing_rule = frappe.get_cached_doc('Pricing Rule', d)
diff --git a/erpnext/accounts/doctype/pricing_rule/test_pricing_rule.py b/erpnext/accounts/doctype/pricing_rule/test_pricing_rule.py
index 680370b..2e2d425 100644
--- a/erpnext/accounts/doctype/pricing_rule/test_pricing_rule.py
+++ b/erpnext/accounts/doctype/pricing_rule/test_pricing_rule.py
@@ -3,14 +3,18 @@
 
 
 from __future__ import unicode_literals
+
 import unittest
+
 import frappe
-from erpnext.selling.doctype.sales_order.test_sales_order import make_sales_order
-from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
-from erpnext.stock.get_item_details import get_item_details
 from frappe import MandatoryError
-from erpnext.stock.doctype.item.test_item import make_item
+
+from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
 from erpnext.healthcare.doctype.lab_test_template.lab_test_template import make_item_price
+from erpnext.selling.doctype.sales_order.test_sales_order import make_sales_order
+from erpnext.stock.doctype.item.test_item import make_item
+from erpnext.stock.get_item_details import get_item_details
+
 
 class TestPricingRule(unittest.TestCase):
 	def setUp(self):
@@ -21,9 +25,10 @@
 		delete_existing_pricing_rules()
 
 	def test_pricing_rule_for_discount(self):
-		from erpnext.stock.get_item_details import get_item_details
 		from frappe import MandatoryError
 
+		from erpnext.stock.get_item_details import get_item_details
+
 		test_record = {
 			"doctype": "Pricing Rule",
 			"title": "_Test Pricing Rule",
@@ -103,9 +108,10 @@
 		self.assertEqual(details.get("discount_percentage"), 15)
 
 	def test_pricing_rule_for_margin(self):
-		from erpnext.stock.get_item_details import get_item_details
 		from frappe import MandatoryError
 
+		from erpnext.stock.get_item_details import get_item_details
+
 		test_record = {
 			"doctype": "Pricing Rule",
 			"title": "_Test Pricing Rule",
@@ -196,9 +202,10 @@
 		self.assertEqual(details.get("discount_percentage"), 10)
 
 	def test_pricing_rule_for_variants(self):
-		from erpnext.stock.get_item_details import get_item_details
 		from frappe import MandatoryError
 
+		from erpnext.stock.get_item_details import get_item_details
+
 		if not frappe.db.exists("Item", "Test Variant PRT"):
 			frappe.get_doc({
 				"doctype": "Item",
diff --git a/erpnext/accounts/doctype/pricing_rule/utils.py b/erpnext/accounts/doctype/pricing_rule/utils.py
index 6f24587..12b486e 100644
--- a/erpnext/accounts/doctype/pricing_rule/utils.py
+++ b/erpnext/accounts/doctype/pricing_rule/utils.py
@@ -8,14 +8,14 @@
 import copy
 import json
 
-from six import string_types
-
 import frappe
+from frappe import _, bold
+from frappe.utils import cint, flt, fmt_money, get_link_to_form, getdate, today
+
 from erpnext.setup.doctype.item_group.item_group import get_child_item_groups
 from erpnext.stock.doctype.warehouse.warehouse import get_child_warehouses
 from erpnext.stock.get_item_details import get_conversion_factor
-from frappe import _, bold
-from frappe.utils import cint, flt, get_link_to_form, getdate, today, fmt_money
+
 
 class MultiplePricingRuleConflict(frappe.ValidationError): pass
 
diff --git a/erpnext/accounts/doctype/pricing_rule_brand/pricing_rule_brand.py b/erpnext/accounts/doctype/pricing_rule_brand/pricing_rule_brand.py
index e2f70af..5e10b84 100644
--- a/erpnext/accounts/doctype/pricing_rule_brand/pricing_rule_brand.py
+++ b/erpnext/accounts/doctype/pricing_rule_brand/pricing_rule_brand.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class PricingRuleBrand(Document):
 	pass
diff --git a/erpnext/accounts/doctype/pricing_rule_detail/pricing_rule_detail.py b/erpnext/accounts/doctype/pricing_rule_detail/pricing_rule_detail.py
index 3cb7da9..a90ecbb 100644
--- a/erpnext/accounts/doctype/pricing_rule_detail/pricing_rule_detail.py
+++ b/erpnext/accounts/doctype/pricing_rule_detail/pricing_rule_detail.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class PricingRuleDetail(Document):
 	pass
diff --git a/erpnext/accounts/doctype/pricing_rule_item_code/pricing_rule_item_code.py b/erpnext/accounts/doctype/pricing_rule_item_code/pricing_rule_item_code.py
index 4468620..4746b39 100644
--- a/erpnext/accounts/doctype/pricing_rule_item_code/pricing_rule_item_code.py
+++ b/erpnext/accounts/doctype/pricing_rule_item_code/pricing_rule_item_code.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class PricingRuleItemCode(Document):
 	pass
diff --git a/erpnext/accounts/doctype/pricing_rule_item_group/pricing_rule_item_group.py b/erpnext/accounts/doctype/pricing_rule_item_group/pricing_rule_item_group.py
index d3c3619..ff1ba75 100644
--- a/erpnext/accounts/doctype/pricing_rule_item_group/pricing_rule_item_group.py
+++ b/erpnext/accounts/doctype/pricing_rule_item_group/pricing_rule_item_group.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class PricingRuleItemGroup(Document):
 	pass
diff --git a/erpnext/accounts/doctype/process_deferred_accounting/process_deferred_accounting.py b/erpnext/accounts/doctype/process_deferred_accounting/process_deferred_accounting.py
index 5e7583a..72b7b23 100644
--- a/erpnext/accounts/doctype/process_deferred_accounting/process_deferred_accounting.py
+++ b/erpnext/accounts/doctype/process_deferred_accounting/process_deferred_accounting.py
@@ -3,13 +3,18 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-import erpnext
 from frappe import _
 from frappe.model.document import Document
+
+from erpnext.accounts.deferred_revenue import (
+	build_conditions,
+	convert_deferred_expense_to_expense,
+	convert_deferred_revenue_to_income,
+)
 from erpnext.accounts.general_ledger import make_reverse_gl_entries
-from erpnext.accounts.deferred_revenue import convert_deferred_expense_to_expense, \
-	convert_deferred_revenue_to_income, build_conditions
+
 
 class ProcessDeferredAccounting(Document):
 	def validate(self):
diff --git a/erpnext/accounts/doctype/process_deferred_accounting/test_process_deferred_accounting.py b/erpnext/accounts/doctype/process_deferred_accounting/test_process_deferred_accounting.py
index 03c269a..69e2caa 100644
--- a/erpnext/accounts/doctype/process_deferred_accounting/test_process_deferred_accounting.py
+++ b/erpnext/accounts/doctype/process_deferred_accounting/test_process_deferred_accounting.py
@@ -3,11 +3,17 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
+import frappe
+
 from erpnext.accounts.doctype.account.test_account import create_account
+from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import (
+	check_gl_entries,
+	create_sales_invoice,
+)
 from erpnext.stock.doctype.item.test_item import create_item
-from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice, check_gl_entries
+
 
 class TestProcessDeferredAccounting(unittest.TestCase):
 	def test_creation_of_ledger_entry_on_submit(self):
diff --git a/erpnext/accounts/doctype/process_statement_of_accounts/process_statement_of_accounts.py b/erpnext/accounts/doctype/process_statement_of_accounts/process_statement_of_accounts.py
index 30b1edc..73f3038 100644
--- a/erpnext/accounts/doctype/process_statement_of_accounts/process_statement_of_accounts.py
+++ b/erpnext/accounts/doctype/process_statement_of_accounts/process_statement_of_accounts.py
@@ -3,22 +3,24 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
+import copy
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
-from erpnext.accounts.report.general_ledger.general_ledger import execute as get_soa
-from erpnext.accounts.report.accounts_receivable_summary.accounts_receivable_summary import execute as get_ageing
+from frappe.utils import add_days, add_months, format_date, getdate, today
+from frappe.utils.jinja import validate_template
+from frappe.utils.pdf import get_pdf
+from frappe.www.printview import get_print_style
+
 from erpnext import get_company_currency
 from erpnext.accounts.party import get_party_account_currency
+from erpnext.accounts.report.accounts_receivable_summary.accounts_receivable_summary import (
+	execute as get_ageing,
+)
+from erpnext.accounts.report.general_ledger.general_ledger import execute as get_soa
 
-from frappe.utils.print_format import report_to_pdf
-from frappe.utils.pdf import get_pdf
-from frappe.utils import today, add_days, add_months, getdate, format_date
-from frappe.utils.jinja import validate_template
-
-import copy
-from datetime import timedelta
-from frappe.www.printview import get_print_style
 
 class ProcessStatementOfAccounts(Document):
 	def validate(self):
diff --git a/erpnext/accounts/doctype/process_statement_of_accounts/test_process_statement_of_accounts.py b/erpnext/accounts/doctype/process_statement_of_accounts/test_process_statement_of_accounts.py
index 30efbb3..7ddcd10 100644
--- a/erpnext/accounts/doctype/process_statement_of_accounts/test_process_statement_of_accounts.py
+++ b/erpnext/accounts/doctype/process_statement_of_accounts/test_process_statement_of_accounts.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestProcessStatementOfAccounts(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/process_statement_of_accounts_customer/process_statement_of_accounts_customer.py b/erpnext/accounts/doctype/process_statement_of_accounts_customer/process_statement_of_accounts_customer.py
index 1a76010..fe94009 100644
--- a/erpnext/accounts/doctype/process_statement_of_accounts_customer/process_statement_of_accounts_customer.py
+++ b/erpnext/accounts/doctype/process_statement_of_accounts_customer/process_statement_of_accounts_customer.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class ProcessStatementOfAccountsCustomer(Document):
 	pass
diff --git a/erpnext/accounts/doctype/promotional_scheme/promotional_scheme.py b/erpnext/accounts/doctype/promotional_scheme/promotional_scheme.py
index 3d7a891..d09f7dc 100644
--- a/erpnext/accounts/doctype/promotional_scheme/promotional_scheme.py
+++ b/erpnext/accounts/doctype/promotional_scheme/promotional_scheme.py
@@ -3,10 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import cstr
-from frappe.model.naming import make_autoname
 from frappe.model.document import Document
 
 pricing_rule_fields = ['apply_on', 'mixed_conditions', 'is_cumulative', 'other_item_code', 'other_item_group',
diff --git a/erpnext/accounts/doctype/promotional_scheme/promotional_scheme_dashboard.py b/erpnext/accounts/doctype/promotional_scheme/promotional_scheme_dashboard.py
index 54fedb7..6d07924 100644
--- a/erpnext/accounts/doctype/promotional_scheme/promotional_scheme_dashboard.py
+++ b/erpnext/accounts/doctype/promotional_scheme/promotional_scheme_dashboard.py
@@ -1,5 +1,6 @@
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'promotional_scheme',
diff --git a/erpnext/accounts/doctype/promotional_scheme/test_promotional_scheme.py b/erpnext/accounts/doctype/promotional_scheme/test_promotional_scheme.py
index 286f7cf..190b734 100644
--- a/erpnext/accounts/doctype/promotional_scheme/test_promotional_scheme.py
+++ b/erpnext/accounts/doctype/promotional_scheme/test_promotional_scheme.py
@@ -3,9 +3,11 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
+
 class TestPromotionalScheme(unittest.TestCase):
 	def test_promotional_scheme(self):
 		ps = make_promotional_scheme()
diff --git a/erpnext/accounts/doctype/promotional_scheme_price_discount/promotional_scheme_price_discount.py b/erpnext/accounts/doctype/promotional_scheme_price_discount/promotional_scheme_price_discount.py
index 380ae32..ab8efc3 100644
--- a/erpnext/accounts/doctype/promotional_scheme_price_discount/promotional_scheme_price_discount.py
+++ b/erpnext/accounts/doctype/promotional_scheme_price_discount/promotional_scheme_price_discount.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class PromotionalSchemePriceDiscount(Document):
 	pass
diff --git a/erpnext/accounts/doctype/promotional_scheme_product_discount/promotional_scheme_product_discount.py b/erpnext/accounts/doctype/promotional_scheme_product_discount/promotional_scheme_product_discount.py
index 2931106..85019b4 100644
--- a/erpnext/accounts/doctype/promotional_scheme_product_discount/promotional_scheme_product_discount.py
+++ b/erpnext/accounts/doctype/promotional_scheme_product_discount/promotional_scheme_product_discount.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class PromotionalSchemeProductDiscount(Document):
 	pass
diff --git a/erpnext/accounts/doctype/psoa_cost_center/psoa_cost_center.py b/erpnext/accounts/doctype/psoa_cost_center/psoa_cost_center.py
index 0aeef3e..cb5aaa9 100644
--- a/erpnext/accounts/doctype/psoa_cost_center/psoa_cost_center.py
+++ b/erpnext/accounts/doctype/psoa_cost_center/psoa_cost_center.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class PSOACostCenter(Document):
 	pass
diff --git a/erpnext/accounts/doctype/psoa_project/psoa_project.py b/erpnext/accounts/doctype/psoa_project/psoa_project.py
index f4a5dee..1cd9951 100644
--- a/erpnext/accounts/doctype/psoa_project/psoa_project.py
+++ b/erpnext/accounts/doctype/psoa_project/psoa_project.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class PSOAProject(Document):
 	pass
diff --git a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
index e2f02f3..62cd90e 100644
--- a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
+++ b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
@@ -3,29 +3,43 @@
 # -*- coding: utf-8 -*-
 
 from __future__ import unicode_literals
-import frappe, erpnext
-from frappe.utils import cint, cstr, formatdate, flt, getdate, nowdate, get_link_to_form
-from frappe import _, throw
-import frappe.defaults
 
-from erpnext.assets.doctype.asset_category.asset_category import get_asset_category_account
-from erpnext.controllers.buying_controller import BuyingController
-from erpnext.accounts.party import get_party_account, get_due_date
-from erpnext.accounts.utils import get_account_currency, get_fiscal_year
-from erpnext.stock.doctype.purchase_receipt.purchase_receipt import update_billed_amount_based_on_po
-from erpnext.stock import get_warehouse_account_map
-from erpnext.accounts.general_ledger import make_gl_entries, merge_similar_entries, make_reverse_gl_entries
-from erpnext.accounts.doctype.gl_entry.gl_entry import update_outstanding_amt
-from erpnext.buying.utils import check_on_hold_or_closed_status
-from erpnext.accounts.general_ledger import get_round_off_account_and_cost_center
-from erpnext.assets.doctype.asset.asset import get_asset_account, is_cwip_accounting_enabled
+import frappe
+from frappe import _, throw
 from frappe.model.mapper import get_mapped_doc
+from frappe.utils import cint, cstr, flt, formatdate, get_link_to_form, getdate, nowdate
 from six import iteritems
-from erpnext.accounts.doctype.sales_invoice.sales_invoice import validate_inter_company_party, update_linked_doc,\
-	unlink_inter_company_doc, check_if_return_invoice_linked_with_payment_entry
-from erpnext.accounts.doctype.tax_withholding_category.tax_withholding_category import get_party_tax_withholding_details
+
+import erpnext
 from erpnext.accounts.deferred_revenue import validate_service_stop_date
-from erpnext.stock.doctype.purchase_receipt.purchase_receipt import get_item_account_wise_additional_cost
+from erpnext.accounts.doctype.gl_entry.gl_entry import update_outstanding_amt
+from erpnext.accounts.doctype.sales_invoice.sales_invoice import (
+	check_if_return_invoice_linked_with_payment_entry,
+	unlink_inter_company_doc,
+	update_linked_doc,
+	validate_inter_company_party,
+)
+from erpnext.accounts.doctype.tax_withholding_category.tax_withholding_category import (
+	get_party_tax_withholding_details,
+)
+from erpnext.accounts.general_ledger import (
+	get_round_off_account_and_cost_center,
+	make_gl_entries,
+	make_reverse_gl_entries,
+	merge_similar_entries,
+)
+from erpnext.accounts.party import get_due_date, get_party_account
+from erpnext.accounts.utils import get_account_currency, get_fiscal_year
+from erpnext.assets.doctype.asset.asset import get_asset_account, is_cwip_accounting_enabled
+from erpnext.assets.doctype.asset_category.asset_category import get_asset_category_account
+from erpnext.buying.utils import check_on_hold_or_closed_status
+from erpnext.controllers.buying_controller import BuyingController
+from erpnext.stock import get_warehouse_account_map
+from erpnext.stock.doctype.purchase_receipt.purchase_receipt import (
+	get_item_account_wise_additional_cost,
+	update_billed_amount_based_on_po,
+)
+
 
 class WarehouseMissingError(frappe.ValidationError): pass
 
diff --git a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice_dashboard.py b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice_dashboard.py
index b6467a3..4cc319d 100644
--- a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice_dashboard.py
+++ b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'purchase_invoice',
diff --git a/erpnext/accounts/doctype/purchase_invoice/test_purchase_invoice.py b/erpnext/accounts/doctype/purchase_invoice/test_purchase_invoice.py
index 37ff52c..20d6c46 100644
--- a/erpnext/accounts/doctype/purchase_invoice/test_purchase_invoice.py
+++ b/erpnext/accounts/doctype/purchase_invoice/test_purchase_invoice.py
@@ -3,20 +3,25 @@
 
 
 from __future__ import unicode_literals
+
 import unittest
-import frappe, erpnext
-import frappe.model
+
+import frappe
+from frappe.utils import add_days, cint, flt, getdate, nowdate, today
+
+import erpnext
+from erpnext.accounts.doctype.account.test_account import create_account, get_inventory_account
 from erpnext.accounts.doctype.payment_entry.payment_entry import get_payment_entry
-from frappe.utils import cint, flt, today, nowdate, add_days, getdate
-import frappe.defaults
-from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import make_purchase_receipt, get_taxes
+from erpnext.buying.doctype.supplier.test_supplier import create_supplier
 from erpnext.controllers.accounts_controller import get_payment_terms
 from erpnext.exceptions import InvalidCurrency
-from erpnext.stock.doctype.stock_entry.test_stock_entry import get_qty_after_transaction
 from erpnext.projects.doctype.project.test_project import make_project
-from erpnext.accounts.doctype.account.test_account import get_inventory_account, create_account
 from erpnext.stock.doctype.item.test_item import create_item
-from erpnext.buying.doctype.supplier.test_supplier import create_supplier
+from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import (
+	get_taxes,
+	make_purchase_receipt,
+)
+from erpnext.stock.doctype.stock_entry.test_stock_entry import get_qty_after_transaction
 
 test_dependencies = ["Item", "Cost Center", "Payment Term", "Payment Terms Template"]
 test_ignore = ["Serial No"]
@@ -231,7 +236,9 @@
 			self.assertEqual(expected_values[gle.account][2], gle.credit)
 
 	def test_purchase_invoice_with_exchange_rate_difference(self):
-		from erpnext.stock.doctype.purchase_receipt.purchase_receipt import make_purchase_invoice as create_purchase_invoice
+		from erpnext.stock.doctype.purchase_receipt.purchase_receipt import (
+			make_purchase_invoice as create_purchase_invoice,
+		)
 
 		pr = make_purchase_receipt(company="_Test Company with perpetual inventory", warehouse='Stores - TCP1',
 			currency = "USD", conversion_rate = 70)
@@ -401,8 +408,9 @@
 			self.assertEqual(tax.total, expected_values[i][2])
 
 	def test_purchase_invoice_with_advance(self):
-		from erpnext.accounts.doctype.journal_entry.test_journal_entry \
-			import test_records as jv_test_records
+		from erpnext.accounts.doctype.journal_entry.test_journal_entry import (
+			test_records as jv_test_records,
+		)
 
 		jv = frappe.copy_doc(jv_test_records[1])
 		jv.insert()
@@ -441,8 +449,9 @@
 			where reference_type='Purchase Invoice' and reference_name=%s""", pi.name))
 
 	def test_invoice_with_advance_and_multi_payment_terms(self):
-		from erpnext.accounts.doctype.journal_entry.test_journal_entry \
-			import test_records as jv_test_records
+		from erpnext.accounts.doctype.journal_entry.test_journal_entry import (
+			test_records as jv_test_records,
+		)
 
 		jv = frappe.copy_doc(jv_test_records[1])
 		jv.insert()
@@ -714,8 +723,9 @@
 			"warehouse"), pi.get("items")[0].rejected_warehouse)
 
 	def test_outstanding_amount_after_advance_jv_cancelation(self):
-		from erpnext.accounts.doctype.journal_entry.test_journal_entry \
-			import test_records as jv_test_records
+		from erpnext.accounts.doctype.journal_entry.test_journal_entry import (
+			test_records as jv_test_records,
+		)
 
 		jv = frappe.copy_doc(jv_test_records[1])
 		jv.accounts[0].is_advance = 'Yes'
@@ -794,8 +804,7 @@
 		self.assertEqual(flt(pi.outstanding_amount), flt(pi.rounded_total + pi.total_advance))
 
 	def test_purchase_invoice_with_shipping_rule(self):
-		from erpnext.accounts.doctype.shipping_rule.test_shipping_rule \
-			import create_shipping_rule
+		from erpnext.accounts.doctype.shipping_rule.test_shipping_rule import create_shipping_rule
 
 		shipping_rule = create_shipping_rule(shipping_rule_type = "Buying", shipping_rule_name = "Shipping Rule - Purchase Invoice Test")
 
@@ -1133,9 +1142,9 @@
 		frappe.db.set_value("Company", "_Test Company", "exchange_gain_loss_account", original_account)
 
 	def test_purchase_invoice_advance_taxes(self):
-		from erpnext.buying.doctype.purchase_order.test_purchase_order import create_purchase_order
 		from erpnext.accounts.doctype.payment_entry.payment_entry import get_payment_entry
 		from erpnext.buying.doctype.purchase_order.purchase_order import get_mapped_purchase_invoice
+		from erpnext.buying.doctype.purchase_order.test_purchase_order import create_purchase_order
 
 		# create a new supplier to test
 		supplier = create_supplier(supplier_name = '_Test TDS Advance Supplier',
diff --git a/erpnext/accounts/doctype/purchase_invoice_advance/purchase_invoice_advance.py b/erpnext/accounts/doctype/purchase_invoice_advance/purchase_invoice_advance.py
index d157837..ec2ce65 100644
--- a/erpnext/accounts/doctype/purchase_invoice_advance/purchase_invoice_advance.py
+++ b/erpnext/accounts/doctype/purchase_invoice_advance/purchase_invoice_advance.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class PurchaseInvoiceAdvance(Document):
 	pass
diff --git a/erpnext/accounts/doctype/purchase_invoice_item/purchase_invoice_item.py b/erpnext/accounts/doctype/purchase_invoice_item/purchase_invoice_item.py
index 50ec7d8..ad2a24c 100644
--- a/erpnext/accounts/doctype/purchase_invoice_item/purchase_invoice_item.py
+++ b/erpnext/accounts/doctype/purchase_invoice_item/purchase_invoice_item.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class PurchaseInvoiceItem(Document):
 	pass
diff --git a/erpnext/accounts/doctype/purchase_taxes_and_charges/purchase_taxes_and_charges.py b/erpnext/accounts/doctype/purchase_taxes_and_charges/purchase_taxes_and_charges.py
index 5854dde..34ac257 100644
--- a/erpnext/accounts/doctype/purchase_taxes_and_charges/purchase_taxes_and_charges.py
+++ b/erpnext/accounts/doctype/purchase_taxes_and_charges/purchase_taxes_and_charges.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class PurchaseTaxesandCharges(Document):
 	pass
diff --git a/erpnext/accounts/doctype/purchase_taxes_and_charges_template/purchase_taxes_and_charges_template.py b/erpnext/accounts/doctype/purchase_taxes_and_charges_template/purchase_taxes_and_charges_template.py
index efcef46..53b549f 100644
--- a/erpnext/accounts/doctype/purchase_taxes_and_charges_template/purchase_taxes_and_charges_template.py
+++ b/erpnext/accounts/doctype/purchase_taxes_and_charges_template/purchase_taxes_and_charges_template.py
@@ -3,10 +3,14 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
-from erpnext.accounts.doctype.sales_taxes_and_charges_template.sales_taxes_and_charges_template \
-	import valdiate_taxes_and_charges_template
+
+from erpnext.accounts.doctype.sales_taxes_and_charges_template.sales_taxes_and_charges_template import (
+	valdiate_taxes_and_charges_template,
+)
+
 
 class PurchaseTaxesandChargesTemplate(Document):
 	def validate(self):
diff --git a/erpnext/accounts/doctype/purchase_taxes_and_charges_template/test_purchase_taxes_and_charges_template.py b/erpnext/accounts/doctype/purchase_taxes_and_charges_template/test_purchase_taxes_and_charges_template.py
index 97fbca3..c60c81b 100644
--- a/erpnext/accounts/doctype/purchase_taxes_and_charges_template/test_purchase_taxes_and_charges_template.py
+++ b/erpnext/accounts/doctype/purchase_taxes_and_charges_template/test_purchase_taxes_and_charges_template.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Purchase Taxes and Charges Template')
diff --git a/erpnext/accounts/doctype/salary_component_account/salary_component_account.py b/erpnext/accounts/doctype/salary_component_account/salary_component_account.py
index 983d015..d96ef62 100644
--- a/erpnext/accounts/doctype/salary_component_account/salary_component_account.py
+++ b/erpnext/accounts/doctype/salary_component_account/salary_component_account.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class SalaryComponentAccount(Document):
 	pass
diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
index 93546c3..ec249c2 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
@@ -2,33 +2,51 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
-import frappe.defaults
-from frappe.utils import cint, flt, getdate, add_days, add_months, cstr, nowdate, get_link_to_form, formatdate
+
+import frappe
 from frappe import _, msgprint, throw
-from erpnext.accounts.party import get_party_account, get_due_date, get_party_details
-from frappe.model.mapper import get_mapped_doc
-from erpnext.controllers.selling_controller import SellingController
-from erpnext.accounts.utils import get_account_currency
-from erpnext.stock.doctype.delivery_note.delivery_note import update_billed_amount_based_on_so
-from erpnext.projects.doctype.timesheet.timesheet import get_projectwise_timesheet_data
-from erpnext.assets.doctype.asset.depreciation \
-	import get_disposal_account_and_cost_center, get_gl_entries_on_asset_disposal, get_gl_entries_on_asset_regain, post_depreciation_entries
-from erpnext.stock.doctype.batch.batch import set_batch_nos
-from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos, get_delivery_note_serial_no
-from erpnext.setup.doctype.company.company import update_company_current_month_sales
-from erpnext.accounts.general_ledger import get_round_off_account_and_cost_center
-from erpnext.accounts.doctype.loyalty_program.loyalty_program import \
-	get_loyalty_program_details_with_points, get_loyalty_details, validate_loyalty_points
-from erpnext.accounts.deferred_revenue import validate_service_stop_date
-from erpnext.accounts.doctype.tax_withholding_category.tax_withholding_category import get_party_tax_withholding_details
-from frappe.model.utils import get_fetch_values
 from frappe.contacts.doctype.address.address import get_address_display
-
-from erpnext.healthcare.utils import manage_invoice_submit_cancel
-
+from frappe.model.mapper import get_mapped_doc
+from frappe.model.utils import get_fetch_values
+from frappe.utils import (
+	add_days,
+	add_months,
+	cint,
+	cstr,
+	flt,
+	formatdate,
+	get_link_to_form,
+	getdate,
+	nowdate,
+)
 from six import iteritems
 
+import erpnext
+from erpnext.accounts.deferred_revenue import validate_service_stop_date
+from erpnext.accounts.doctype.loyalty_program.loyalty_program import (
+	get_loyalty_program_details_with_points,
+	validate_loyalty_points,
+)
+from erpnext.accounts.doctype.tax_withholding_category.tax_withholding_category import (
+	get_party_tax_withholding_details,
+)
+from erpnext.accounts.general_ledger import get_round_off_account_and_cost_center
+from erpnext.accounts.party import get_due_date, get_party_account, get_party_details
+from erpnext.accounts.utils import get_account_currency
+from erpnext.assets.doctype.asset.depreciation import (
+	get_disposal_account_and_cost_center,
+	get_gl_entries_on_asset_disposal,
+	get_gl_entries_on_asset_regain,
+	post_depreciation_entries,
+)
+from erpnext.controllers.selling_controller import SellingController
+from erpnext.healthcare.utils import manage_invoice_submit_cancel
+from erpnext.projects.doctype.timesheet.timesheet import get_projectwise_timesheet_data
+from erpnext.setup.doctype.company.company import update_company_current_month_sales
+from erpnext.stock.doctype.batch.batch import set_batch_nos
+from erpnext.stock.doctype.delivery_note.delivery_note import update_billed_amount_based_on_so
+from erpnext.stock.doctype.serial_no.serial_no import get_delivery_note_serial_no, get_serial_nos
+
 form_grid_templates = {
 	"items": "templates/form_grid/item_grid.html"
 }
@@ -480,7 +498,7 @@
 		if not self.account_for_change_amount:
 			self.account_for_change_amount = frappe.get_cached_value('Company',  self.company,  'default_cash_account')
 
-		from erpnext.stock.get_item_details import get_pos_profile_item_details, get_pos_profile
+		from erpnext.stock.get_item_details import get_pos_profile, get_pos_profile_item_details
 		if not self.pos_profile:
 			pos_profile = get_pos_profile(self.company) or {}
 			if not pos_profile:
@@ -1374,8 +1392,10 @@
 
 	# redeem the loyalty points.
 	def apply_loyalty_points(self):
-		from erpnext.accounts.doctype.loyalty_point_entry.loyalty_point_entry \
-			import get_loyalty_point_entries, get_redemption_details
+		from erpnext.accounts.doctype.loyalty_point_entry.loyalty_point_entry import (
+			get_loyalty_point_entries,
+			get_redemption_details,
+		)
 		loyalty_point_entries = get_loyalty_point_entries(self.customer, self.loyalty_program, self.company, self.posting_date)
 		redemption_details = get_redemption_details(self.customer, self.loyalty_program, self.company)
 
@@ -2008,7 +2028,11 @@
 @frappe.whitelist()
 def create_dunning(source_name, target_doc=None):
 	from frappe.model.mapper import get_mapped_doc
-	from erpnext.accounts.doctype.dunning.dunning import get_dunning_letter_text, calculate_interest_and_amount
+
+	from erpnext.accounts.doctype.dunning.dunning import (
+		calculate_interest_and_amount,
+		get_dunning_letter_text,
+	)
 	def set_missing_values(source, target):
 		target.sales_invoice = source_name
 		target.outstanding_amount = source.outstanding_amount
diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice_dashboard.py b/erpnext/accounts/doctype/sales_invoice/sales_invoice_dashboard.py
index 3238ead..64b35b2 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice_dashboard.py
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'sales_invoice',
diff --git a/erpnext/accounts/doctype/sales_invoice/test_sales_invoice.py b/erpnext/accounts/doctype/sales_invoice/test_sales_invoice.py
index e06a3bb..da0c315 100644
--- a/erpnext/accounts/doctype/sales_invoice/test_sales_invoice.py
+++ b/erpnext/accounts/doctype/sales_invoice/test_sales_invoice.py
@@ -2,31 +2,39 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-import frappe, erpnext
+import copy
+import unittest
 
-import unittest, copy, time
-from frappe.utils import nowdate, flt, getdate, cint, add_days, add_months
+import frappe
 from frappe.model.dynamic_links import get_dynamic_link_map
-from erpnext.stock.doctype.stock_entry.test_stock_entry import make_stock_entry, get_qty_after_transaction
-from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import unlink_payment_on_cancel_of_invoice
-from erpnext.accounts.doctype.purchase_invoice.purchase_invoice import WarehouseMissingError
-from erpnext.accounts.doctype.pos_profile.test_pos_profile import make_pos_profile
-from erpnext.assets.doctype.asset.test_asset import create_asset, create_asset_data
-from erpnext.assets.doctype.asset.depreciation import post_depreciation_entries
-from erpnext.exceptions import InvalidAccountCurrency, InvalidCurrency
-from erpnext.stock.doctype.serial_no.serial_no import SerialNoWarehouseError
 from frappe.model.naming import make_autoname
-from erpnext.accounts.doctype.account.test_account import get_inventory_account, create_account
-from erpnext.controllers.taxes_and_totals import get_itemised_tax_breakup_data
-from erpnext.stock.doctype.item.test_item import create_item
+from frappe.utils import add_days, flt, getdate, nowdate
 from six import iteritems
+
+import erpnext
+from erpnext.accounts.doctype.account.test_account import create_account, get_inventory_account
+from erpnext.accounts.doctype.pos_profile.test_pos_profile import make_pos_profile
+from erpnext.accounts.doctype.purchase_invoice.purchase_invoice import WarehouseMissingError
+from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import (
+	unlink_payment_on_cancel_of_invoice,
+)
 from erpnext.accounts.doctype.sales_invoice.sales_invoice import make_inter_company_transaction
-from erpnext.regional.india.utils import get_ewb_data
-from erpnext.stock.doctype.stock_entry.stock_entry_utils import make_stock_entry
-from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import make_purchase_receipt
-from erpnext.stock.doctype.delivery_note.delivery_note import make_sales_invoice
-from erpnext.stock.utils import get_incoming_rate
 from erpnext.accounts.utils import PaymentEntryUnlinkError
+from erpnext.assets.doctype.asset.depreciation import post_depreciation_entries
+from erpnext.assets.doctype.asset.test_asset import create_asset, create_asset_data
+from erpnext.controllers.taxes_and_totals import get_itemised_tax_breakup_data
+from erpnext.exceptions import InvalidAccountCurrency, InvalidCurrency
+from erpnext.regional.india.utils import get_ewb_data
+from erpnext.stock.doctype.delivery_note.delivery_note import make_sales_invoice
+from erpnext.stock.doctype.item.test_item import create_item
+from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import make_purchase_receipt
+from erpnext.stock.doctype.serial_no.serial_no import SerialNoWarehouseError
+from erpnext.stock.doctype.stock_entry.test_stock_entry import (
+	get_qty_after_transaction,
+	make_stock_entry,
+)
+from erpnext.stock.utils import get_incoming_rate
+
 
 class TestSalesInvoice(unittest.TestCase):
 	def make(self):
@@ -677,8 +685,9 @@
 	def test_payment(self):
 		w = self.make()
 
-		from erpnext.accounts.doctype.journal_entry.test_journal_entry \
-			import test_records as jv_test_records
+		from erpnext.accounts.doctype.journal_entry.test_journal_entry import (
+			test_records as jv_test_records,
+		)
 
 		jv = frappe.get_doc(frappe.copy_doc(jv_test_records[0]))
 		jv.get("accounts")[0].reference_type = w.doctype
@@ -944,16 +953,18 @@
 
 
 	def _insert_purchase_receipt(self):
-		from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import test_records \
-			as pr_test_records
+		from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import (
+			test_records as pr_test_records,
+		)
 		pr = frappe.copy_doc(pr_test_records[0])
 		pr.naming_series = "_T-Purchase Receipt-"
 		pr.insert()
 		pr.submit()
 
 	def _insert_delivery_note(self):
-		from erpnext.stock.doctype.delivery_note.test_delivery_note import test_records \
-			as dn_test_records
+		from erpnext.stock.doctype.delivery_note.test_delivery_note import (
+			test_records as dn_test_records,
+		)
 		dn = frappe.copy_doc(dn_test_records[0])
 		dn.naming_series = "_T-Delivery Note-"
 		dn.insert()
@@ -961,8 +972,9 @@
 		return dn
 
 	def test_sales_invoice_with_advance(self):
-		from erpnext.accounts.doctype.journal_entry.test_journal_entry \
-			import test_records as jv_test_records
+		from erpnext.accounts.doctype.journal_entry.test_journal_entry import (
+			test_records as jv_test_records,
+		)
 
 		jv = frappe.copy_doc(jv_test_records[0])
 		jv.insert()
@@ -994,8 +1006,8 @@
 		si.cancel()
 
 	def test_serialized(self):
-		from erpnext.stock.doctype.stock_entry.test_stock_entry import make_serialized_item
 		from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
+		from erpnext.stock.doctype.stock_entry.test_stock_entry import make_serialized_item
 
 		se = make_serialized_item()
 		serial_nos = get_serial_nos(se.get("items")[0].serial_no)
@@ -1048,9 +1060,9 @@
 			check if the sales invoice item serial numbers and the delivery note items
 			serial numbers are same
 		"""
-		from erpnext.stock.doctype.stock_entry.test_stock_entry import make_serialized_item
 		from erpnext.stock.doctype.delivery_note.test_delivery_note import create_delivery_note
 		from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
+		from erpnext.stock.doctype.stock_entry.test_stock_entry import make_serialized_item
 
 		se = make_serialized_item()
 		serial_nos = get_serial_nos(se.get("items")[0].serial_no)
@@ -1290,8 +1302,9 @@
 		self.assertEqual(si.get("items")[0].rate, flt((price_list_rate*25)/100 + price_list_rate))
 
 	def test_outstanding_amount_after_advance_jv_cancelation(self):
-		from erpnext.accounts.doctype.journal_entry.test_journal_entry \
-			import test_records as jv_test_records
+		from erpnext.accounts.doctype.journal_entry.test_journal_entry import (
+			test_records as jv_test_records,
+		)
 
 		jv = frappe.copy_doc(jv_test_records[0])
 		jv.accounts[0].is_advance = 'Yes'
@@ -1577,8 +1590,7 @@
 			self.assertEqual(expected_values[gle.account][2], gle.credit)
 
 	def test_sales_invoice_with_shipping_rule(self):
-		from erpnext.accounts.doctype.shipping_rule.test_shipping_rule \
-			import create_shipping_rule
+		from erpnext.accounts.doctype.shipping_rule.test_shipping_rule import create_shipping_rule
 
 		shipping_rule = create_shipping_rule(shipping_rule_type = "Selling", shipping_rule_name = "Shipping Rule - Sales Invoice Test")
 
@@ -2129,7 +2141,9 @@
 		self.assertEqual(sales_invoice.items[0].item_tax_template, "_Test Account Excise Duty @ 10 - _TC")
 
 	def test_sales_invoice_with_discount_accounting_enabled(self):
-		from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import enable_discount_accounting
+		from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import (
+			enable_discount_accounting,
+		)
 
 		enable_discount_accounting()
 
@@ -2147,7 +2161,9 @@
 		enable_discount_accounting(enable=0)
 
 	def test_additional_discount_for_sales_invoice_with_discount_accounting_enabled(self):
-		from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import enable_discount_accounting
+		from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import (
+			enable_discount_accounting,
+		)
 
 		enable_discount_accounting()
 		additional_discount_account = create_account(account_name="Discount Account",
@@ -2201,7 +2217,9 @@
 			self.assertTrue(schedule.journal_entry)
 
 	def test_sales_invoice_against_supplier(self):
-		from erpnext.accounts.doctype.opening_invoice_creation_tool.test_opening_invoice_creation_tool import make_customer
+		from erpnext.accounts.doctype.opening_invoice_creation_tool.test_opening_invoice_creation_tool import (
+			make_customer,
+		)
 		from erpnext.buying.doctype.supplier.test_supplier import create_supplier
 
 		# create a customer
diff --git a/erpnext/accounts/doctype/sales_invoice_advance/sales_invoice_advance.py b/erpnext/accounts/doctype/sales_invoice_advance/sales_invoice_advance.py
index 28aeef4..ae69598 100644
--- a/erpnext/accounts/doctype/sales_invoice_advance/sales_invoice_advance.py
+++ b/erpnext/accounts/doctype/sales_invoice_advance/sales_invoice_advance.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class SalesInvoiceAdvance(Document):
 	pass
diff --git a/erpnext/accounts/doctype/sales_invoice_item/sales_invoice_item.py b/erpnext/accounts/doctype/sales_invoice_item/sales_invoice_item.py
index a73b03a..063c591 100644
--- a/erpnext/accounts/doctype/sales_invoice_item/sales_invoice_item.py
+++ b/erpnext/accounts/doctype/sales_invoice_item/sales_invoice_item.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class SalesInvoiceItem(Document):
 	pass
diff --git a/erpnext/accounts/doctype/sales_invoice_payment/sales_invoice_payment.py b/erpnext/accounts/doctype/sales_invoice_payment/sales_invoice_payment.py
index cc0b7a6..a980ece 100644
--- a/erpnext/accounts/doctype/sales_invoice_payment/sales_invoice_payment.py
+++ b/erpnext/accounts/doctype/sales_invoice_payment/sales_invoice_payment.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class SalesInvoicePayment(Document):
 	pass
diff --git a/erpnext/accounts/doctype/sales_invoice_timesheet/sales_invoice_timesheet.py b/erpnext/accounts/doctype/sales_invoice_timesheet/sales_invoice_timesheet.py
index afc05ab..e8d4b11 100644
--- a/erpnext/accounts/doctype/sales_invoice_timesheet/sales_invoice_timesheet.py
+++ b/erpnext/accounts/doctype/sales_invoice_timesheet/sales_invoice_timesheet.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class SalesInvoiceTimesheet(Document):
 	pass
diff --git a/erpnext/accounts/doctype/sales_partner_item/sales_partner_item.py b/erpnext/accounts/doctype/sales_partner_item/sales_partner_item.py
index 9796c7b..97489d1 100644
--- a/erpnext/accounts/doctype/sales_partner_item/sales_partner_item.py
+++ b/erpnext/accounts/doctype/sales_partner_item/sales_partner_item.py
@@ -4,5 +4,6 @@
 # import frappe
 from frappe.model.document import Document
 
+
 class SalesPartnerItem(Document):
 	pass
diff --git a/erpnext/accounts/doctype/sales_taxes_and_charges/sales_taxes_and_charges.py b/erpnext/accounts/doctype/sales_taxes_and_charges/sales_taxes_and_charges.py
index b1de9d8..39872f3 100644
--- a/erpnext/accounts/doctype/sales_taxes_and_charges/sales_taxes_and_charges.py
+++ b/erpnext/accounts/doctype/sales_taxes_and_charges/sales_taxes_and_charges.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class SalesTaxesandCharges(Document):
 	pass
diff --git a/erpnext/accounts/doctype/sales_taxes_and_charges_template/sales_taxes_and_charges_template.py b/erpnext/accounts/doctype/sales_taxes_and_charges_template/sales_taxes_and_charges_template.py
index 8f9eb65..0a0bb3e 100644
--- a/erpnext/accounts/doctype/sales_taxes_and_charges_template/sales_taxes_and_charges_template.py
+++ b/erpnext/accounts/doctype/sales_taxes_and_charges_template/sales_taxes_and_charges_template.py
@@ -2,11 +2,19 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import flt
 from frappe.model.document import Document
-from erpnext.controllers.accounts_controller import validate_taxes_and_charges, validate_inclusive_tax, validate_cost_center, validate_account_head
+from frappe.utils import flt
+
+from erpnext.controllers.accounts_controller import (
+	validate_account_head,
+	validate_cost_center,
+	validate_inclusive_tax,
+	validate_taxes_and_charges,
+)
+
 
 class SalesTaxesandChargesTemplate(Document):
 	def validate(self):
diff --git a/erpnext/accounts/doctype/sales_taxes_and_charges_template/test_sales_taxes_and_charges_template.py b/erpnext/accounts/doctype/sales_taxes_and_charges_template/test_sales_taxes_and_charges_template.py
index 1c0c0c7..1cad412 100644
--- a/erpnext/accounts/doctype/sales_taxes_and_charges_template/test_sales_taxes_and_charges_template.py
+++ b/erpnext/accounts/doctype/sales_taxes_and_charges_template/test_sales_taxes_and_charges_template.py
@@ -3,9 +3,10 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
 test_records = frappe.get_test_records('Sales Taxes and Charges Template')
 
 class TestSalesTaxesandChargesTemplate(unittest.TestCase):
diff --git a/erpnext/accounts/doctype/share_balance/share_balance.py b/erpnext/accounts/doctype/share_balance/share_balance.py
index bd165cd..0353e99 100644
--- a/erpnext/accounts/doctype/share_balance/share_balance.py
+++ b/erpnext/accounts/doctype/share_balance/share_balance.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ShareBalance(Document):
 	pass
diff --git a/erpnext/accounts/doctype/share_transfer/share_transfer.py b/erpnext/accounts/doctype/share_transfer/share_transfer.py
index 3d4543f..5117ef8 100644
--- a/erpnext/accounts/doctype/share_transfer/share_transfer.py
+++ b/erpnext/accounts/doctype/share_transfer/share_transfer.py
@@ -3,13 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.model.document import Document
-from frappe.model.naming   import make_autoname
 from frappe.exceptions import ValidationError
+from frappe.model.document import Document
+from frappe.model.naming import make_autoname
 from frappe.utils import nowdate
 
+
 class ShareDontExists(ValidationError): pass
 
 class ShareTransfer(Document):
diff --git a/erpnext/accounts/doctype/share_transfer/test_share_transfer.py b/erpnext/accounts/doctype/share_transfer/test_share_transfer.py
index 2ff9b02..b40e5fb 100644
--- a/erpnext/accounts/doctype/share_transfer/test_share_transfer.py
+++ b/erpnext/accounts/doctype/share_transfer/test_share_transfer.py
@@ -3,8 +3,10 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
+import frappe
+
 from erpnext.accounts.doctype.share_transfer.share_transfer import ShareDontExists
 
 test_dependencies = ["Share Type", "Shareholder"]
diff --git a/erpnext/accounts/doctype/share_type/share_type.py b/erpnext/accounts/doctype/share_type/share_type.py
index ab4b8bc..5b133aa 100644
--- a/erpnext/accounts/doctype/share_type/share_type.py
+++ b/erpnext/accounts/doctype/share_type/share_type.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ShareType(Document):
 	pass
diff --git a/erpnext/accounts/doctype/share_type/test_share_type.py b/erpnext/accounts/doctype/share_type/test_share_type.py
index 1c1f051..a6f8d61 100644
--- a/erpnext/accounts/doctype/share_type/test_share_type.py
+++ b/erpnext/accounts/doctype/share_type/test_share_type.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestShareType(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/shareholder/shareholder.py b/erpnext/accounts/doctype/shareholder/shareholder.py
index c507fcf..12c50c8 100644
--- a/erpnext/accounts/doctype/shareholder/shareholder.py
+++ b/erpnext/accounts/doctype/shareholder/shareholder.py
@@ -3,9 +3,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
+from frappe.contacts.address_and_contact import (
+	delete_contact_and_address,
+	load_address_and_contact,
+)
 from frappe.model.document import Document
-from frappe.contacts.address_and_contact import load_address_and_contact, delete_contact_and_address
+
 
 class Shareholder(Document):
 	def onload(self):
diff --git a/erpnext/accounts/doctype/shareholder/shareholder_dashboard.py b/erpnext/accounts/doctype/shareholder/shareholder_dashboard.py
index 3b77fd5..0084f25 100644
--- a/erpnext/accounts/doctype/shareholder/shareholder_dashboard.py
+++ b/erpnext/accounts/doctype/shareholder/shareholder_dashboard.py
@@ -1,7 +1,5 @@
 from __future__ import unicode_literals
 
-from frappe import _
-
 
 def get_data():
 	return {
diff --git a/erpnext/accounts/doctype/shareholder/test_shareholder.py b/erpnext/accounts/doctype/shareholder/test_shareholder.py
index 9ce0093..6790fdd 100644
--- a/erpnext/accounts/doctype/shareholder/test_shareholder.py
+++ b/erpnext/accounts/doctype/shareholder/test_shareholder.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestShareholder(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/shipping_rule/shipping_rule.py b/erpnext/accounts/doctype/shipping_rule/shipping_rule.py
index d32a348..2852101 100644
--- a/erpnext/accounts/doctype/shipping_rule/shipping_rule.py
+++ b/erpnext/accounts/doctype/shipping_rule/shipping_rule.py
@@ -4,10 +4,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
+
+import frappe
 from frappe import _, msgprint, throw
-from frappe.utils import flt, fmt_money
 from frappe.model.document import Document
+from frappe.utils import flt, fmt_money
+
+import erpnext
+
 
 class OverlappingConditionError(frappe.ValidationError): pass
 class FromGreaterThanToError(frappe.ValidationError): pass
diff --git a/erpnext/accounts/doctype/shipping_rule/test_shipping_rule.py b/erpnext/accounts/doctype/shipping_rule/test_shipping_rule.py
index abc6ab8..bdd9be3 100644
--- a/erpnext/accounts/doctype/shipping_rule/test_shipping_rule.py
+++ b/erpnext/accounts/doctype/shipping_rule/test_shipping_rule.py
@@ -2,9 +2,15 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from erpnext.accounts.doctype.shipping_rule.shipping_rule import FromGreaterThanToError, ManyBlankToValuesError, OverlappingConditionError
+
+import frappe
+
+from erpnext.accounts.doctype.shipping_rule.shipping_rule import (
+	FromGreaterThanToError,
+	ManyBlankToValuesError,
+	OverlappingConditionError,
+)
 
 test_records = frappe.get_test_records('Shipping Rule')
 
diff --git a/erpnext/accounts/doctype/shipping_rule_condition/shipping_rule_condition.py b/erpnext/accounts/doctype/shipping_rule_condition/shipping_rule_condition.py
index db6ef11..66cd269 100644
--- a/erpnext/accounts/doctype/shipping_rule_condition/shipping_rule_condition.py
+++ b/erpnext/accounts/doctype/shipping_rule_condition/shipping_rule_condition.py
@@ -4,9 +4,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class ShippingRuleCondition(Document):
 	pass
diff --git a/erpnext/accounts/doctype/shipping_rule_country/shipping_rule_country.py b/erpnext/accounts/doctype/shipping_rule_country/shipping_rule_country.py
index b9646cf..9576acd 100644
--- a/erpnext/accounts/doctype/shipping_rule_country/shipping_rule_country.py
+++ b/erpnext/accounts/doctype/shipping_rule_country/shipping_rule_country.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ShippingRuleCountry(Document):
 	pass
diff --git a/erpnext/accounts/doctype/south_africa_vat_account/south_africa_vat_account.py b/erpnext/accounts/doctype/south_africa_vat_account/south_africa_vat_account.py
index 4bd8c65..d9a3bcc 100644
--- a/erpnext/accounts/doctype/south_africa_vat_account/south_africa_vat_account.py
+++ b/erpnext/accounts/doctype/south_africa_vat_account/south_africa_vat_account.py
@@ -4,5 +4,6 @@
 # import frappe
 from frappe.model.document import Document
 
+
 class SouthAfricaVATAccount(Document):
 	pass
diff --git a/erpnext/accounts/doctype/subscription/subscription.py b/erpnext/accounts/doctype/subscription/subscription.py
index 8bf7b78f..445eb3c 100644
--- a/erpnext/accounts/doctype/subscription/subscription.py
+++ b/erpnext/accounts/doctype/subscription/subscription.py
@@ -6,13 +6,27 @@
 from __future__ import unicode_literals
 
 import frappe
-import erpnext
 from frappe import _
 from frappe.model.document import Document
-from frappe.utils.data import nowdate, getdate, cstr, cint, add_days, date_diff, get_last_day, add_to_date, flt
-from erpnext.accounts.doctype.subscription_plan.subscription_plan import get_plan_rate
-from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import get_accounting_dimensions
+from frappe.utils.data import (
+	add_days,
+	add_to_date,
+	cint,
+	cstr,
+	date_diff,
+	flt,
+	get_last_day,
+	getdate,
+	nowdate,
+)
+
+import erpnext
 from erpnext import get_default_company
+from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import (
+	get_accounting_dimensions,
+)
+from erpnext.accounts.doctype.subscription_plan.subscription_plan import get_plan_rate
+
 
 class Subscription(Document):
 	def before_insert(self):
diff --git a/erpnext/accounts/doctype/subscription/test_subscription.py b/erpnext/accounts/doctype/subscription/test_subscription.py
index 4f2cf48..e2cf4d5 100644
--- a/erpnext/accounts/doctype/subscription/test_subscription.py
+++ b/erpnext/accounts/doctype/subscription/test_subscription.py
@@ -6,9 +6,18 @@
 import unittest
 
 import frappe
+from frappe.utils.data import (
+	add_days,
+	add_months,
+	add_to_date,
+	date_diff,
+	flt,
+	get_date_str,
+	nowdate,
+)
+
 from erpnext.accounts.doctype.subscription.subscription import get_prorata_factor
-from frappe.utils.data import (nowdate, add_days, add_to_date, add_months, date_diff, flt, get_date_str,
-	get_first_day, get_last_day)
+
 
 def create_plan():
 	if not frappe.db.exists('Subscription Plan', '_Test Plan Name'):
diff --git a/erpnext/accounts/doctype/subscription_invoice/subscription_invoice.py b/erpnext/accounts/doctype/subscription_invoice/subscription_invoice.py
index 6f459b4..687c94c 100644
--- a/erpnext/accounts/doctype/subscription_invoice/subscription_invoice.py
+++ b/erpnext/accounts/doctype/subscription_invoice/subscription_invoice.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class SubscriptionInvoice(Document):
 	pass
diff --git a/erpnext/accounts/doctype/subscription_invoice/test_subscription_invoice.py b/erpnext/accounts/doctype/subscription_invoice/test_subscription_invoice.py
index e60a4ee..2cc3038 100644
--- a/erpnext/accounts/doctype/subscription_invoice/test_subscription_invoice.py
+++ b/erpnext/accounts/doctype/subscription_invoice/test_subscription_invoice.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestSubscriptionInvoice(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/subscription_plan/subscription_plan.py b/erpnext/accounts/doctype/subscription_plan/subscription_plan.py
index a341c2a..c7bb58c 100644
--- a/erpnext/accounts/doctype/subscription_plan/subscription_plan.py
+++ b/erpnext/accounts/doctype/subscription_plan/subscription_plan.py
@@ -3,12 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import get_first_day, get_last_day, date_diff, flt, getdate
 from frappe.model.document import Document
+from frappe.utils import date_diff, flt, get_first_day, get_last_day, getdate
+
 from erpnext.utilities.product import get_price
 
+
 class SubscriptionPlan(Document):
 	def validate(self):
 		self.validate_interval_count()
diff --git a/erpnext/accounts/doctype/subscription_plan/test_subscription_plan.py b/erpnext/accounts/doctype/subscription_plan/test_subscription_plan.py
index 73afbf6..ba99763 100644
--- a/erpnext/accounts/doctype/subscription_plan/test_subscription_plan.py
+++ b/erpnext/accounts/doctype/subscription_plan/test_subscription_plan.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestSubscriptionPlan(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/subscription_plan_detail/subscription_plan_detail.py b/erpnext/accounts/doctype/subscription_plan_detail/subscription_plan_detail.py
index 1d9606f..a63a277 100644
--- a/erpnext/accounts/doctype/subscription_plan_detail/subscription_plan_detail.py
+++ b/erpnext/accounts/doctype/subscription_plan_detail/subscription_plan_detail.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class SubscriptionPlanDetail(Document):
 	pass
diff --git a/erpnext/accounts/doctype/subscription_settings/subscription_settings.py b/erpnext/accounts/doctype/subscription_settings/subscription_settings.py
index cc378e4..5473583 100644
--- a/erpnext/accounts/doctype/subscription_settings/subscription_settings.py
+++ b/erpnext/accounts/doctype/subscription_settings/subscription_settings.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class SubscriptionSettings(Document):
 	pass
diff --git a/erpnext/accounts/doctype/subscription_settings/test_subscription_settings.py b/erpnext/accounts/doctype/subscription_settings/test_subscription_settings.py
index 82c7e1d..5875ee0 100644
--- a/erpnext/accounts/doctype/subscription_settings/test_subscription_settings.py
+++ b/erpnext/accounts/doctype/subscription_settings/test_subscription_settings.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestSubscriptionSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/supplier_group_item/supplier_group_item.py b/erpnext/accounts/doctype/supplier_group_item/supplier_group_item.py
index de0444e..61c16fe 100644
--- a/erpnext/accounts/doctype/supplier_group_item/supplier_group_item.py
+++ b/erpnext/accounts/doctype/supplier_group_item/supplier_group_item.py
@@ -4,5 +4,6 @@
 # import frappe
 from frappe.model.document import Document
 
+
 class SupplierGroupItem(Document):
 	pass
diff --git a/erpnext/accounts/doctype/supplier_item/supplier_item.py b/erpnext/accounts/doctype/supplier_item/supplier_item.py
index ad66e23..2105b1d 100644
--- a/erpnext/accounts/doctype/supplier_item/supplier_item.py
+++ b/erpnext/accounts/doctype/supplier_item/supplier_item.py
@@ -4,5 +4,6 @@
 # import frappe
 from frappe.model.document import Document
 
+
 class SupplierItem(Document):
 	pass
diff --git a/erpnext/accounts/doctype/tax_category/tax_category.py b/erpnext/accounts/doctype/tax_category/tax_category.py
index 2870e32..df31a5e 100644
--- a/erpnext/accounts/doctype/tax_category/tax_category.py
+++ b/erpnext/accounts/doctype/tax_category/tax_category.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class TaxCategory(Document):
 	pass
diff --git a/erpnext/accounts/doctype/tax_category/test_tax_category.py b/erpnext/accounts/doctype/tax_category/test_tax_category.py
index 548d008..9093105 100644
--- a/erpnext/accounts/doctype/tax_category/test_tax_category.py
+++ b/erpnext/accounts/doctype/tax_category/test_tax_category.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestTaxCategory(unittest.TestCase):
 	pass
diff --git a/erpnext/accounts/doctype/tax_rule/tax_rule.py b/erpnext/accounts/doctype/tax_rule/tax_rule.py
index 5814231..150498d 100644
--- a/erpnext/accounts/doctype/tax_rule/tax_rule.py
+++ b/erpnext/accounts/doctype/tax_rule/tax_rule.py
@@ -3,19 +3,21 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-from past.builtins import cmp
-import frappe
-from frappe import _
-from frappe.model.document import Document
-from frappe.utils import cstr, cint
-from frappe.contacts.doctype.address.address import get_default_address
-from frappe.utils.nestedset import get_root_of
-from erpnext.setup.doctype.customer_group.customer_group import get_parent_customer_groups
 
 import functools
 
+import frappe
+from frappe import _
+from frappe.contacts.doctype.address.address import get_default_address
+from frappe.model.document import Document
+from frappe.utils import cint, cstr
+from frappe.utils.nestedset import get_root_of
+from past.builtins import cmp
 from six import iteritems
 
+from erpnext.setup.doctype.customer_group.customer_group import get_parent_customer_groups
+
+
 class IncorrectCustomerGroup(frappe.ValidationError): pass
 class IncorrectSupplierType(frappe.ValidationError): pass
 class ConflictingTaxRule(frappe.ValidationError): pass
diff --git a/erpnext/accounts/doctype/tax_rule/test_tax_rule.py b/erpnext/accounts/doctype/tax_rule/test_tax_rule.py
index cf72268..f937274 100644
--- a/erpnext/accounts/doctype/tax_rule/test_tax_rule.py
+++ b/erpnext/accounts/doctype/tax_rule/test_tax_rule.py
@@ -3,16 +3,19 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from erpnext.accounts.doctype.tax_rule.tax_rule import IncorrectCustomerGroup, IncorrectSupplierType, ConflictingTaxRule, get_tax_template
-from erpnext.crm.doctype.opportunity.test_opportunity import make_opportunity
+
+import frappe
+
+from erpnext.accounts.doctype.tax_rule.tax_rule import ConflictingTaxRule, get_tax_template
 from erpnext.crm.doctype.opportunity.opportunity import make_quotation
+from erpnext.crm.doctype.opportunity.test_opportunity import make_opportunity
 
 test_records = frappe.get_test_records('Tax Rule')
 
 from six import iteritems
 
+
 class TestTaxRule(unittest.TestCase):
 	@classmethod
 	def setUpClass(cls):
diff --git a/erpnext/accounts/doctype/tax_withholding_account/tax_withholding_account.py b/erpnext/accounts/doctype/tax_withholding_account/tax_withholding_account.py
index 76e3fa3..fd19482 100644
--- a/erpnext/accounts/doctype/tax_withholding_account/tax_withholding_account.py
+++ b/erpnext/accounts/doctype/tax_withholding_account/tax_withholding_account.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class TaxWithholdingAccount(Document):
 	pass
diff --git a/erpnext/accounts/doctype/tax_withholding_category/tax_withholding_category.py b/erpnext/accounts/doctype/tax_withholding_category/tax_withholding_category.py
index 5772ac2..b4bdd73 100644
--- a/erpnext/accounts/doctype/tax_withholding_category/tax_withholding_category.py
+++ b/erpnext/accounts/doctype/tax_withholding_category/tax_withholding_category.py
@@ -3,12 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
-from frappe.utils import flt, getdate, cint
+from frappe.utils import cint, getdate
+
 from erpnext.accounts.utils import get_fiscal_year
 
+
 class TaxWithholdingCategory(Document):
 	pass
 
diff --git a/erpnext/accounts/doctype/tax_withholding_category/tax_withholding_category_dashboard.py b/erpnext/accounts/doctype/tax_withholding_category/tax_withholding_category_dashboard.py
index d51ba65..152ee46 100644
--- a/erpnext/accounts/doctype/tax_withholding_category/tax_withholding_category_dashboard.py
+++ b/erpnext/accounts/doctype/tax_withholding_category/tax_withholding_category_dashboard.py
@@ -1,7 +1,5 @@
 from __future__ import unicode_literals
 
-from frappe import _
-
 
 def get_data():
 	return {
diff --git a/erpnext/accounts/doctype/tax_withholding_category/test_tax_withholding_category.py b/erpnext/accounts/doctype/tax_withholding_category/test_tax_withholding_category.py
index 0f921db..c4a5ba5 100644
--- a/erpnext/accounts/doctype/tax_withholding_category/test_tax_withholding_category.py
+++ b/erpnext/accounts/doctype/tax_withholding_category/test_tax_withholding_category.py
@@ -3,11 +3,12 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
+import frappe
 from frappe.utils import today
+
 from erpnext.accounts.utils import get_fiscal_year
-from erpnext.buying.doctype.supplier.test_supplier import create_supplier
 
 test_dependencies = ["Supplier Group", "Customer Group"]
 
diff --git a/erpnext/accounts/doctype/tax_withholding_rate/tax_withholding_rate.py b/erpnext/accounts/doctype/tax_withholding_rate/tax_withholding_rate.py
index 6e32abe..6556277 100644
--- a/erpnext/accounts/doctype/tax_withholding_rate/tax_withholding_rate.py
+++ b/erpnext/accounts/doctype/tax_withholding_rate/tax_withholding_rate.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class TaxWithholdingRate(Document):
 	pass
diff --git a/erpnext/accounts/doctype/territory_item/territory_item.py b/erpnext/accounts/doctype/territory_item/territory_item.py
index d46edc9..bcc02be 100644
--- a/erpnext/accounts/doctype/territory_item/territory_item.py
+++ b/erpnext/accounts/doctype/territory_item/territory_item.py
@@ -4,5 +4,6 @@
 # import frappe
 from frappe.model.document import Document
 
+
 class TerritoryItem(Document):
 	pass
diff --git a/erpnext/accounts/general_ledger.py b/erpnext/accounts/general_ledger.py
index 3126138..4bf2b82 100644
--- a/erpnext/accounts/general_ledger.py
+++ b/erpnext/accounts/general_ledger.py
@@ -2,12 +2,18 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
-from frappe.utils import flt, cstr, cint, comma_and, today, getdate, formatdate, now
+
+import frappe
 from frappe import _
 from frappe.model.meta import get_field_precision
+from frappe.utils import cint, cstr, flt, formatdate, getdate, now
+
+import erpnext
+from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import (
+	get_accounting_dimensions,
+)
 from erpnext.accounts.doctype.budget.budget import validate_expense_against_budget
-from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import get_accounting_dimensions
+
 
 class ClosedAccountingPeriod(frappe.ValidationError): pass
 
diff --git a/erpnext/accounts/notification/notification_for_new_fiscal_year/notification_for_new_fiscal_year.py b/erpnext/accounts/notification/notification_for_new_fiscal_year/notification_for_new_fiscal_year.py
index 1bc4d18..f57de91 100644
--- a/erpnext/accounts/notification/notification_for_new_fiscal_year/notification_for_new_fiscal_year.py
+++ b/erpnext/accounts/notification/notification_for_new_fiscal_year/notification_for_new_fiscal_year.py
@@ -1,5 +1,6 @@
 from __future__ import unicode_literals
 
+
 def get_context(context):
 	# do your magic here
 	pass
diff --git a/erpnext/accounts/party.py b/erpnext/accounts/party.py
index b78ea42..7ea6cce 100644
--- a/erpnext/accounts/party.py
+++ b/erpnext/accounts/party.py
@@ -3,20 +3,37 @@
 
 from __future__ import unicode_literals
 
-import frappe, erpnext
+import frappe
 from frappe import _, msgprint, scrub
+from frappe.contacts.doctype.address.address import (
+	get_address_display,
+	get_company_address,
+	get_default_address,
+)
+from frappe.contacts.doctype.contact.contact import get_contact_details
 from frappe.core.doctype.user_permission.user_permission import get_permitted_documents
 from frappe.model.utils import get_fetch_values
-from frappe.utils import (add_days, getdate, formatdate, date_diff,
-	add_years, get_timestamp, nowdate, flt, cstr, add_months, get_last_day, cint)
-from frappe.contacts.doctype.address.address import (get_address_display,
-	get_default_address, get_company_address)
-from frappe.contacts.doctype.contact.contact import get_contact_details
-from erpnext.exceptions import PartyFrozen, PartyDisabled, InvalidAccountCurrency
-from erpnext.accounts.utils import get_fiscal_year
-from erpnext import get_company_currency
+from frappe.utils import (
+	add_days,
+	add_months,
+	add_years,
+	cint,
+	cstr,
+	date_diff,
+	flt,
+	formatdate,
+	get_last_day,
+	get_timestamp,
+	getdate,
+	nowdate,
+)
+from six import iteritems
 
-from six import iteritems, string_types
+import erpnext
+from erpnext import get_company_currency
+from erpnext.accounts.utils import get_fiscal_year
+from erpnext.exceptions import InvalidAccountCurrency, PartyDisabled, PartyFrozen
+
 
 class DuplicatePartyAccountError(frappe.ValidationError): pass
 
@@ -386,7 +403,7 @@
 @frappe.whitelist()
 def set_taxes(party, party_type, posting_date, company, customer_group=None, supplier_group=None, tax_category=None,
 	billing_address=None, shipping_address=None, use_for_shopping_cart=None):
-	from erpnext.accounts.doctype.tax_rule.tax_rule import get_tax_template, get_party_details
+	from erpnext.accounts.doctype.tax_rule.tax_rule import get_party_details, get_tax_template
 	args = {
 		party_type.lower(): party,
 		"company": company
diff --git a/erpnext/accounts/report/account_balance/account_balance.py b/erpnext/accounts/report/account_balance/account_balance.py
index be64c32..9ae61dd 100644
--- a/erpnext/accounts/report/account_balance/account_balance.py
+++ b/erpnext/accounts/report/account_balance/account_balance.py
@@ -2,10 +2,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
+
 from erpnext.accounts.utils import get_balance_on
 
+
 def execute(filters=None):
 	filters = frappe._dict(filters or {})
 	columns = get_columns(filters)
diff --git a/erpnext/accounts/report/account_balance/test_account_balance.py b/erpnext/accounts/report/account_balance/test_account_balance.py
index f5c9449..94c73f5 100644
--- a/erpnext/accounts/report/account_balance/test_account_balance.py
+++ b/erpnext/accounts/report/account_balance/test_account_balance.py
@@ -1,10 +1,13 @@
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
+import frappe
 from frappe.utils import getdate
-from erpnext.accounts.report.account_balance.account_balance import execute
+
 from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
+from erpnext.accounts.report.account_balance.account_balance import execute
+
 
 class TestAccountBalance(unittest.TestCase):
 	def test_account_balance(self):
diff --git a/erpnext/accounts/report/accounts_payable/accounts_payable.py b/erpnext/accounts/report/accounts_payable/accounts_payable.py
index 246ead6..0de573e 100644
--- a/erpnext/accounts/report/accounts_payable/accounts_payable.py
+++ b/erpnext/accounts/report/accounts_payable/accounts_payable.py
@@ -2,9 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from erpnext.accounts.report.accounts_receivable.accounts_receivable import ReceivablePayableReport
 
+
 def execute(filters=None):
 	args = {
 		"party_type": "Supplier",
diff --git a/erpnext/accounts/report/accounts_payable_summary/accounts_payable_summary.py b/erpnext/accounts/report/accounts_payable_summary/accounts_payable_summary.py
index c08582b..6034ec0 100644
--- a/erpnext/accounts/report/accounts_payable_summary/accounts_payable_summary.py
+++ b/erpnext/accounts/report/accounts_payable_summary/accounts_payable_summary.py
@@ -2,9 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
-from erpnext.accounts.report.accounts_receivable_summary.accounts_receivable_summary \
-	import AccountsReceivableSummary
+
+from erpnext.accounts.report.accounts_receivable_summary.accounts_receivable_summary import (
+	AccountsReceivableSummary,
+)
+
 
 def execute(filters=None):
 	args = {
diff --git a/erpnext/accounts/report/accounts_receivable/accounts_receivable.py b/erpnext/accounts/report/accounts_receivable/accounts_receivable.py
index cedfc0f..e91fdf2 100755
--- a/erpnext/accounts/report/accounts_receivable/accounts_receivable.py
+++ b/erpnext/accounts/report/accounts_receivable/accounts_receivable.py
@@ -2,12 +2,18 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
-from frappe import _, scrub
-from frappe.utils import getdate, nowdate, flt, cint, formatdate, cstr, now, time_diff_in_seconds
+
 from collections import OrderedDict
+
+import frappe
+from frappe import _, scrub
+from frappe.utils import cint, cstr, flt, getdate, nowdate
+
+from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import (
+	get_accounting_dimensions,
+	get_dimension_with_children,
+)
 from erpnext.accounts.utils import get_currency_precision
-from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import get_accounting_dimensions, get_dimension_with_children
 
 #  This report gives a summary of all Outstanding Invoices considering the following
 
diff --git a/erpnext/accounts/report/accounts_receivable/test_accounts_receivable.py b/erpnext/accounts/report/accounts_receivable/test_accounts_receivable.py
index cca6760..1d24561 100644
--- a/erpnext/accounts/report/accounts_receivable/test_accounts_receivable.py
+++ b/erpnext/accounts/report/accounts_receivable/test_accounts_receivable.py
@@ -1,11 +1,14 @@
 from __future__ import unicode_literals
-import frappe
-import frappe.defaults
+
 import unittest
-from frappe.utils import today, getdate, add_days
-from erpnext.accounts.report.accounts_receivable.accounts_receivable import execute
-from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
+
+import frappe
+from frappe.utils import add_days, getdate, today
+
 from erpnext.accounts.doctype.payment_entry.payment_entry import get_payment_entry
+from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
+from erpnext.accounts.report.accounts_receivable.accounts_receivable import execute
+
 
 class TestAccountsReceivable(unittest.TestCase):
 	def test_accounts_receivable(self):
diff --git a/erpnext/accounts/report/accounts_receivable_summary/accounts_receivable_summary.py b/erpnext/accounts/report/accounts_receivable_summary/accounts_receivable_summary.py
index 4bfb022..106f224 100644
--- a/erpnext/accounts/report/accounts_receivable_summary/accounts_receivable_summary.py
+++ b/erpnext/accounts/report/accounts_receivable_summary/accounts_receivable_summary.py
@@ -2,12 +2,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _, scrub
-from frappe.utils import flt, cint
+from frappe.utils import cint
+from six import iteritems
+
 from erpnext.accounts.party import get_partywise_advanced_payment_amount
 from erpnext.accounts.report.accounts_receivable.accounts_receivable import ReceivablePayableReport
-from six import iteritems
+
 
 def execute(filters=None):
 	args = {
diff --git a/erpnext/accounts/report/asset_depreciation_ledger/asset_depreciation_ledger.py b/erpnext/accounts/report/asset_depreciation_ledger/asset_depreciation_ledger.py
index 2162a02..0fd4ca0 100644
--- a/erpnext/accounts/report/asset_depreciation_ledger/asset_depreciation_ledger.py
+++ b/erpnext/accounts/report/asset_depreciation_ledger/asset_depreciation_ledger.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
-from frappe.utils import flt
+
+import frappe
 from frappe import _
+from frappe.utils import flt
+
 
 def execute(filters=None):
 	columns, data = get_columns(), get_data(filters)
diff --git a/erpnext/accounts/report/asset_depreciations_and_balances/asset_depreciations_and_balances.py b/erpnext/accounts/report/asset_depreciations_and_balances/asset_depreciations_and_balances.py
index 5001ad9..d34bc85 100644
--- a/erpnext/accounts/report/asset_depreciations_and_balances/asset_depreciations_and_balances.py
+++ b/erpnext/accounts/report/asset_depreciations_and_balances/asset_depreciations_and_balances.py
@@ -2,9 +2,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import formatdate, flt, add_days
+from frappe.utils import add_days, flt, formatdate
 
 
 def execute(filters=None):
diff --git a/erpnext/accounts/report/balance_sheet/balance_sheet.py b/erpnext/accounts/report/balance_sheet/balance_sheet.py
index 7838385..78ee7ca 100644
--- a/erpnext/accounts/report/balance_sheet/balance_sheet.py
+++ b/erpnext/accounts/report/balance_sheet/balance_sheet.py
@@ -2,11 +2,18 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import flt, cint
-from erpnext.accounts.report.financial_statements import (get_period_list, get_columns, get_data,
-	get_filtered_list_for_consolidated_report)
+from frappe.utils import cint, flt
+
+from erpnext.accounts.report.financial_statements import (
+	get_columns,
+	get_data,
+	get_filtered_list_for_consolidated_report,
+	get_period_list,
+)
+
 
 def execute(filters=None):
 	period_list = get_period_list(filters.from_fiscal_year, filters.to_fiscal_year,
diff --git a/erpnext/accounts/report/bank_clearance_summary/bank_clearance_summary.py b/erpnext/accounts/report/bank_clearance_summary/bank_clearance_summary.py
index 95f724c..1a1fa96 100644
--- a/erpnext/accounts/report/bank_clearance_summary/bank_clearance_summary.py
+++ b/erpnext/accounts/report/bank_clearance_summary/bank_clearance_summary.py
@@ -2,9 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import nowdate, getdate
+from frappe.utils import getdate, nowdate
+
 
 def execute(filters=None):
 	if not filters: filters = {}
diff --git a/erpnext/accounts/report/bank_reconciliation_statement/bank_reconciliation_statement.py b/erpnext/accounts/report/bank_reconciliation_statement/bank_reconciliation_statement.py
index 63317c5..b984306 100644
--- a/erpnext/accounts/report/bank_reconciliation_statement/bank_reconciliation_statement.py
+++ b/erpnext/accounts/report/bank_reconciliation_statement/bank_reconciliation_statement.py
@@ -2,9 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import flt, getdate, nowdate
 from frappe import _
+from frappe.utils import flt, getdate, nowdate
+
 
 def execute(filters=None):
 	if not filters: filters = {}
diff --git a/erpnext/accounts/report/billed_items_to_be_received/billed_items_to_be_received.py b/erpnext/accounts/report/billed_items_to_be_received/billed_items_to_be_received.py
index 2dcea22..6c4cd67 100644
--- a/erpnext/accounts/report/billed_items_to_be_received/billed_items_to_be_received.py
+++ b/erpnext/accounts/report/billed_items_to_be_received/billed_items_to_be_received.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 def execute(filters=None):
 	data = get_data(filters) or []
 	columns = get_columns()
diff --git a/erpnext/accounts/report/budget_variance_report/budget_variance_report.py b/erpnext/accounts/report/budget_variance_report/budget_variance_report.py
index 443126e..c204250 100644
--- a/erpnext/accounts/report/budget_variance_report/budget_variance_report.py
+++ b/erpnext/accounts/report/budget_variance_report/budget_variance_report.py
@@ -2,12 +2,13 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import datetime
-from six import iteritems
 
 import frappe
 from frappe import _
 from frappe.utils import flt, formatdate
+from six import iteritems
 
 from erpnext.controllers.trends import get_period_date_ranges, get_period_month_ranges
 
diff --git a/erpnext/accounts/report/cash_flow/cash_flow.py b/erpnext/accounts/report/cash_flow/cash_flow.py
index 3577457..d527188 100644
--- a/erpnext/accounts/report/cash_flow/cash_flow.py
+++ b/erpnext/accounts/report/cash_flow/cash_flow.py
@@ -2,14 +2,23 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import cint, cstr
-from erpnext.accounts.report.financial_statements import (get_period_list, get_columns, get_data, get_filtered_list_for_consolidated_report)
-from erpnext.accounts.report.profit_and_loss_statement.profit_and_loss_statement import get_net_profit_loss
-from erpnext.accounts.utils import get_fiscal_year
 from six import iteritems
 
+from erpnext.accounts.report.financial_statements import (
+	get_columns,
+	get_data,
+	get_filtered_list_for_consolidated_report,
+	get_period_list,
+)
+from erpnext.accounts.report.profit_and_loss_statement.profit_and_loss_statement import (
+	get_net_profit_loss,
+)
+from erpnext.accounts.utils import get_fiscal_year
+
 
 def execute(filters=None):
 	if cint(frappe.db.get_single_value('Accounts Settings', 'use_custom_cash_flow')):
diff --git a/erpnext/accounts/report/cash_flow/custom_cash_flow.py b/erpnext/accounts/report/cash_flow/custom_cash_flow.py
index c11c153..bbc020e 100644
--- a/erpnext/accounts/report/cash_flow/custom_cash_flow.py
+++ b/erpnext/accounts/report/cash_flow/custom_cash_flow.py
@@ -2,11 +2,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import add_to_date
-from erpnext.accounts.report.financial_statements import (get_period_list, get_columns, get_data)
-from erpnext.accounts.report.profit_and_loss_statement.profit_and_loss_statement import get_net_profit_loss
+
+from erpnext.accounts.report.financial_statements import get_columns, get_data, get_period_list
+from erpnext.accounts.report.profit_and_loss_statement.profit_and_loss_statement import (
+	get_net_profit_loss,
+)
 
 
 def get_mapper_for(mappers, position):
diff --git a/erpnext/accounts/report/consolidated_financial_statement/consolidated_financial_statement.py b/erpnext/accounts/report/consolidated_financial_statement/consolidated_financial_statement.py
index fc42127..e419727 100644
--- a/erpnext/accounts/report/consolidated_financial_statement/consolidated_financial_statement.py
+++ b/erpnext/accounts/report/consolidated_financial_statement/consolidated_financial_statement.py
@@ -2,17 +2,37 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
+
+import frappe
 from frappe import _
-from frappe.utils import flt, cint, getdate
-from erpnext.accounts.report.utils import get_currency, convert_to_presentation_currency
+from frappe.utils import cint, flt, getdate
+
+from erpnext.accounts.report.balance_sheet.balance_sheet import (
+	check_opening_balance,
+	get_chart_data,
+	get_provisional_profit_loss,
+)
+from erpnext.accounts.report.balance_sheet.balance_sheet import (
+	get_report_summary as get_bs_summary,
+)
+from erpnext.accounts.report.cash_flow.cash_flow import (
+	add_total_row_account,
+	get_account_type_based_gl_data,
+	get_cash_flow_accounts,
+)
+from erpnext.accounts.report.cash_flow.cash_flow import get_report_summary as get_cash_flow_summary
 from erpnext.accounts.report.financial_statements import get_fiscal_year_data, sort_accounts
-from erpnext.accounts.report.balance_sheet.balance_sheet import (get_provisional_profit_loss,
-	check_opening_balance, get_chart_data, get_report_summary as get_bs_summary)
-from erpnext.accounts.report.profit_and_loss_statement.profit_and_loss_statement import (get_net_profit_loss,
-	get_chart_data as get_pl_chart_data, get_report_summary as get_pl_summary)
-from erpnext.accounts.report.cash_flow.cash_flow import (get_cash_flow_accounts, get_account_type_based_gl_data,
-	add_total_row_account, get_report_summary as get_cash_flow_summary)
+from erpnext.accounts.report.profit_and_loss_statement.profit_and_loss_statement import (
+	get_chart_data as get_pl_chart_data,
+)
+from erpnext.accounts.report.profit_and_loss_statement.profit_and_loss_statement import (
+	get_net_profit_loss,
+)
+from erpnext.accounts.report.profit_and_loss_statement.profit_and_loss_statement import (
+	get_report_summary as get_pl_summary,
+)
+from erpnext.accounts.report.utils import convert_to_presentation_currency
+
 
 def execute(filters=None):
 	columns, data, message, chart = [], [], [], []
diff --git a/erpnext/accounts/report/customer_ledger_summary/customer_ledger_summary.py b/erpnext/accounts/report/customer_ledger_summary/customer_ledger_summary.py
index c79d740..603fbac 100644
--- a/erpnext/accounts/report/customer_ledger_summary/customer_ledger_summary.py
+++ b/erpnext/accounts/report/customer_ledger_summary/customer_ledger_summary.py
@@ -2,12 +2,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-import erpnext
 from frappe import _, scrub
 from frappe.utils import getdate, nowdate
 from six import iteritems, itervalues
 
+
 class PartyLedgerSummaryReport(object):
 	def __init__(self, filters=None):
 		self.filters = frappe._dict(filters or {})
diff --git a/erpnext/accounts/report/delivered_items_to_be_billed/delivered_items_to_be_billed.py b/erpnext/accounts/report/delivered_items_to_be_billed/delivered_items_to_be_billed.py
index 9953d8f..f096094 100644
--- a/erpnext/accounts/report/delivered_items_to_be_billed/delivered_items_to_be_billed.py
+++ b/erpnext/accounts/report/delivered_items_to_be_billed/delivered_items_to_be_billed.py
@@ -2,10 +2,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe import _
+
 from erpnext.accounts.report.non_billed_report import get_ordered_to_be_billed_data
 
+
 def execute(filters=None):
 	columns = get_column()
 	args = get_args()
diff --git a/erpnext/accounts/report/dimension_wise_accounts_balance_report/dimension_wise_accounts_balance_report.py b/erpnext/accounts/report/dimension_wise_accounts_balance_report/dimension_wise_accounts_balance_report.py
index de7ed49..4212137 100644
--- a/erpnext/accounts/report/dimension_wise_accounts_balance_report/dimension_wise_accounts_balance_report.py
+++ b/erpnext/accounts/report/dimension_wise_accounts_balance_report/dimension_wise_accounts_balance_report.py
@@ -2,14 +2,19 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
-from frappe import _
-from frappe.utils import (flt, cstr)
 
-from erpnext.accounts.report.financial_statements import filter_accounts, filter_out_zero_value_rows
+import frappe
+from frappe import _
+from frappe.utils import cstr, flt
+from six import itervalues
+
+import erpnext
+from erpnext.accounts.report.financial_statements import (
+	filter_accounts,
+	filter_out_zero_value_rows,
+)
 from erpnext.accounts.report.trial_balance.trial_balance import validate_filters
 
-from six import itervalues
 
 def execute(filters=None):
 	validate_filters(filters)
diff --git a/erpnext/accounts/report/financial_statements.py b/erpnext/accounts/report/financial_statements.py
index f5309cd..2cb8a68 100644
--- a/erpnext/accounts/report/financial_statements.py
+++ b/erpnext/accounts/report/financial_statements.py
@@ -5,19 +5,23 @@
 
 from __future__ import unicode_literals
 
-import re
-from past.builtins import cmp
 import functools
 import math
+import re
 
-import frappe, erpnext
-from erpnext.accounts.report.utils import get_currency, convert_to_presentation_currency
-from erpnext.accounts.utils import get_fiscal_year
+import frappe
 from frappe import _
-from frappe.utils import (flt, getdate, get_first_day, add_months, add_days, formatdate, cstr, cint)
-
+from frappe.utils import add_days, add_months, cint, cstr, flt, formatdate, get_first_day, getdate
+from past.builtins import cmp
 from six import itervalues
-from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import get_accounting_dimensions, get_dimension_with_children
+
+from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import (
+	get_accounting_dimensions,
+	get_dimension_with_children,
+)
+from erpnext.accounts.report.utils import convert_to_presentation_currency, get_currency
+from erpnext.accounts.utils import get_fiscal_year
+
 
 def get_period_list(from_fiscal_year, to_fiscal_year, period_start_date, period_end_date, filter_based_on, periodicity, accumulated_values=False,
 	company=None, reset_period_on_fy_change=True, ignore_fiscal_year=False):
diff --git a/erpnext/accounts/report/general_ledger/general_ledger.py b/erpnext/accounts/report/general_ledger/general_ledger.py
index 3723c8e..a044518 100644
--- a/erpnext/accounts/report/general_ledger/general_ledger.py
+++ b/erpnext/accounts/report/general_ledger/general_ledger.py
@@ -2,17 +2,24 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
-from erpnext import get_company_currency, get_default_company
-from erpnext.accounts.report.utils import get_currency, convert_to_presentation_currency
-from frappe.utils import getdate, cstr, flt, fmt_money
-from frappe import _, _dict
-from erpnext.accounts.utils import get_account_currency
-from erpnext.accounts.report.financial_statements import get_cost_centers_with_children
-from six import iteritems
-from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import get_accounting_dimensions, get_dimension_with_children
+
 from collections import OrderedDict
 
+import frappe
+from frappe import _, _dict
+from frappe.utils import cstr, flt, getdate
+from six import iteritems
+
+from erpnext import get_company_currency, get_default_company
+from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import (
+	get_accounting_dimensions,
+	get_dimension_with_children,
+)
+from erpnext.accounts.report.financial_statements import get_cost_centers_with_children
+from erpnext.accounts.report.utils import convert_to_presentation_currency, get_currency
+from erpnext.accounts.utils import get_account_currency
+
+
 def execute(filters=None):
 	if not filters:
 		return [], []
diff --git a/erpnext/accounts/report/gross_and_net_profit_report/gross_and_net_profit_report.py b/erpnext/accounts/report/gross_and_net_profit_report/gross_and_net_profit_report.py
index 8e33af7..49522d9 100644
--- a/erpnext/accounts/report/gross_and_net_profit_report/gross_and_net_profit_report.py
+++ b/erpnext/accounts/report/gross_and_net_profit_report/gross_and_net_profit_report.py
@@ -2,11 +2,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
+import copy
+
 import frappe
 from frappe import _
 from frappe.utils import flt
-from erpnext.accounts.report.financial_statements import (get_period_list, get_columns, get_data)
-import copy
+
+from erpnext.accounts.report.financial_statements import get_columns, get_data, get_period_list
+
 
 def execute(filters=None):
 	period_list = get_period_list(filters.from_fiscal_year, filters.to_fiscal_year, filters.period_start_date,
diff --git a/erpnext/accounts/report/gross_profit/gross_profit.py b/erpnext/accounts/report/gross_profit/gross_profit.py
index 8ea5e07..f08bca9 100644
--- a/erpnext/accounts/report/gross_profit/gross_profit.py
+++ b/erpnext/accounts/report/gross_profit/gross_profit.py
@@ -2,11 +2,13 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _, scrub
-from erpnext.stock.utils import get_incoming_rate
+from frappe.utils import cint, flt
+
 from erpnext.controllers.queries import get_match_cond
-from frappe.utils import flt, cint
+from erpnext.stock.utils import get_incoming_rate
 
 
 def execute(filters=None):
@@ -46,7 +48,7 @@
 
 	else:
 		get_data_when_not_grouped_by_invoice(gross_profit_data, filters, group_wise_columns, data)
-	
+
 	return columns, data
 
 def get_data_when_grouped_by_invoice(columns, gross_profit_data, filters, group_wise_columns, data):
@@ -57,7 +59,7 @@
 	# removing Item Code and Item Name columns
 	del columns[4:6]
 
-	for src in gross_profit_data.si_list:	
+	for src in gross_profit_data.si_list:
 		row = frappe._dict()
 		row.indent = src.indent
 		row.parent_invoice = src.parent_invoice
@@ -121,23 +123,23 @@
 
 def get_column_names():
 	return frappe._dict({
-		'parent': 'sales_invoice',     
-		'customer': 'customer', 
-		'customer_group': 'customer_group', 
-		'posting_date': 'posting_date', 
-		'item_code': 'item_code', 
-		'item_name': 'item_name', 
-		'item_group': 'item_group', 
-		'brand': 'brand', 
-		'description': 'description', 
-		'warehouse': 'warehouse', 
-		'qty': 'qty', 
-		'base_rate': 'avg._selling_rate', 
-		'buying_rate': 'valuation_rate', 
-		'base_amount': 'selling_amount', 
-		'buying_amount': 'buying_amount', 
-		'gross_profit': 'gross_profit', 
-		'gross_profit_percent': 'gross_profit_%', 
+		'parent': 'sales_invoice',
+		'customer': 'customer',
+		'customer_group': 'customer_group',
+		'posting_date': 'posting_date',
+		'item_code': 'item_code',
+		'item_name': 'item_name',
+		'item_group': 'item_group',
+		'brand': 'brand',
+		'description': 'description',
+		'warehouse': 'warehouse',
+		'qty': 'qty',
+		'base_rate': 'avg._selling_rate',
+		'buying_rate': 'valuation_rate',
+		'base_amount': 'selling_amount',
+		'buying_amount': 'buying_amount',
+		'gross_profit': 'gross_profit',
+		'gross_profit_percent': 'gross_profit_%',
 		'project': 'project'
 	})
 
@@ -466,16 +468,16 @@
 			'description': None,
 			'warehouse': None,
 			'item_group': None,
-			'brand': None, 
-			'dn_detail': None, 
-			'delivery_note': None, 
-			'qty': None, 
-			'item_row': None, 
-			'is_return': row.is_return, 
+			'brand': None,
+			'dn_detail': None,
+			'delivery_note': None,
+			'qty': None,
+			'item_row': None,
+			'is_return': row.is_return,
 			'cost_center': row.cost_center,
 			'base_net_amount': frappe.db.get_value('Sales Invoice', row.parent, 'base_net_total')
 		})
-			
+
 	def add_bundle_items(self, product_bundle, index):
 		bundle_items = self.get_bundle_items(product_bundle)
 
@@ -509,19 +511,19 @@
 			'description': description,
 			'warehouse': product_bundle.warehouse,
 			'item_group': item_group,
-			'brand': brand, 
-			'dn_detail': product_bundle.dn_detail, 
-			'delivery_note': product_bundle.delivery_note, 
-			'qty': (flt(product_bundle.qty) * flt(item.qty)), 
-			'item_row': None, 
-			'is_return': product_bundle.is_return, 
+			'brand': brand,
+			'dn_detail': product_bundle.dn_detail,
+			'delivery_note': product_bundle.delivery_note,
+			'qty': (flt(product_bundle.qty) * flt(item.qty)),
+			'item_row': None,
+			'is_return': product_bundle.is_return,
 			'cost_center': product_bundle.cost_center
 		})
 
 	def get_bundle_item_details(self, item_code):
 		return frappe.db.get_value(
-			'Item', 
-			item_code, 
+			'Item',
+			item_code,
 			['item_name', 'description', 'item_group', 'brand']
 		)
 
diff --git a/erpnext/accounts/report/inactive_sales_items/inactive_sales_items.py b/erpnext/accounts/report/inactive_sales_items/inactive_sales_items.py
index 7dea80c..8f82271 100644
--- a/erpnext/accounts/report/inactive_sales_items/inactive_sales_items.py
+++ b/erpnext/accounts/report/inactive_sales_items/inactive_sales_items.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import getdate, add_days, today, cint
 from frappe import _
+from frappe.utils import cint
+
 
 def execute(filters=None):
 	columns = get_columns()
diff --git a/erpnext/accounts/report/item_wise_purchase_register/item_wise_purchase_register.py b/erpnext/accounts/report/item_wise_purchase_register/item_wise_purchase_register.py
index 685419a..cd25c05 100644
--- a/erpnext/accounts/report/item_wise_purchase_register/item_wise_purchase_register.py
+++ b/erpnext/accounts/report/item_wise_purchase_register/item_wise_purchase_register.py
@@ -2,14 +2,23 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
+
+import frappe
 from frappe import _
 from frappe.utils import flt
-from erpnext.accounts.report.item_wise_sales_register.item_wise_sales_register import (get_tax_accounts,
-	get_grand_total, add_total_row, get_display_value, get_group_by_and_display_fields, add_sub_total_row,
-	get_group_by_conditions)
+
+import erpnext
+from erpnext.accounts.report.item_wise_sales_register.item_wise_sales_register import (
+	add_sub_total_row,
+	add_total_row,
+	get_grand_total,
+	get_group_by_and_display_fields,
+	get_group_by_conditions,
+	get_tax_accounts,
+)
 from erpnext.selling.report.item_wise_sales_history.item_wise_sales_history import get_item_details
 
+
 def execute(filters=None):
 	return _execute(filters)
 
diff --git a/erpnext/accounts/report/item_wise_sales_register/item_wise_sales_register.py b/erpnext/accounts/report/item_wise_sales_register/item_wise_sales_register.py
index c9c22c2..847a127 100644
--- a/erpnext/accounts/report/item_wise_sales_register/item_wise_sales_register.py
+++ b/erpnext/accounts/report/item_wise_sales_register/item_wise_sales_register.py
@@ -2,13 +2,19 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
+
+import frappe
 from frappe import _
-from frappe.utils import flt, cstr
 from frappe.model.meta import get_field_precision
+from frappe.utils import cstr, flt
 from frappe.utils.xlsxutils import handle_html
+
 from erpnext.accounts.report.sales_register.sales_register import get_mode_of_payments
-from erpnext.selling.report.item_wise_sales_history.item_wise_sales_history import get_item_details, get_customer_details
+from erpnext.selling.report.item_wise_sales_history.item_wise_sales_history import (
+	get_customer_details,
+	get_item_details,
+)
+
 
 def execute(filters=None):
 	return _execute(filters)
diff --git a/erpnext/accounts/report/non_billed_report.py b/erpnext/accounts/report/non_billed_report.py
index 5173505..b61f87d 100644
--- a/erpnext/accounts/report/non_billed_report.py
+++ b/erpnext/accounts/report/non_billed_report.py
@@ -2,11 +2,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe import _
-from erpnext import get_default_currency
 from frappe.model.meta import get_field_precision
 
+from erpnext import get_default_currency
+
+
 def get_ordered_to_be_billed_data(args):
 	doctype, party = args.get('doctype'), args.get('party')
 	child_tab = doctype + " Item"
diff --git a/erpnext/accounts/report/payment_period_based_on_invoice_date/payment_period_based_on_invoice_date.py b/erpnext/accounts/report/payment_period_based_on_invoice_date/payment_period_based_on_invoice_date.py
index 556f5ad..6c6af1c 100644
--- a/erpnext/accounts/report/payment_period_based_on_invoice_date/payment_period_based_on_invoice_date.py
+++ b/erpnext/accounts/report/payment_period_based_on_invoice_date/payment_period_based_on_invoice_date.py
@@ -2,10 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
+from frappe.utils import flt, getdate
+
 from erpnext.accounts.report.accounts_receivable.accounts_receivable import ReceivablePayableReport
-from frappe.utils import getdate, flt
 
 
 def execute(filters=None):
diff --git a/erpnext/accounts/report/pos_register/pos_register.py b/erpnext/accounts/report/pos_register/pos_register.py
index b7e112c..c9463ca 100644
--- a/erpnext/accounts/report/pos_register/pos_register.py
+++ b/erpnext/accounts/report/pos_register/pos_register.py
@@ -2,11 +2,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe import _, _dict
-from erpnext import get_company_currency, get_default_company
+from frappe import _
+
 from erpnext.accounts.report.sales_register.sales_register import get_mode_of_payments
 
+
 def execute(filters=None):
 	if not filters:
 		return [], []
diff --git a/erpnext/accounts/report/profit_and_loss_statement/profit_and_loss_statement.py b/erpnext/accounts/report/profit_and_loss_statement/profit_and_loss_statement.py
index 5d04824..ef799f6 100644
--- a/erpnext/accounts/report/profit_and_loss_statement/profit_and_loss_statement.py
+++ b/erpnext/accounts/report/profit_and_loss_statement/profit_and_loss_statement.py
@@ -2,11 +2,18 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import flt
-from erpnext.accounts.report.financial_statements import (get_period_list, get_columns, get_data,
-	get_filtered_list_for_consolidated_report)
+
+from erpnext.accounts.report.financial_statements import (
+	get_columns,
+	get_data,
+	get_filtered_list_for_consolidated_report,
+	get_period_list,
+)
+
 
 def execute(filters=None):
 	period_list = get_period_list(filters.from_fiscal_year, filters.to_fiscal_year,
diff --git a/erpnext/accounts/report/profitability_analysis/profitability_analysis.py b/erpnext/accounts/report/profitability_analysis/profitability_analysis.py
index 48bd730..ad97808 100644
--- a/erpnext/accounts/report/profitability_analysis/profitability_analysis.py
+++ b/erpnext/accounts/report/profitability_analysis/profitability_analysis.py
@@ -2,10 +2,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import flt, getdate, formatdate, cstr
-from erpnext.accounts.report.financial_statements import filter_accounts, filter_out_zero_value_rows
+from frappe.utils import cstr, flt
+
+from erpnext.accounts.report.financial_statements import (
+	filter_accounts,
+	filter_out_zero_value_rows,
+)
 from erpnext.accounts.report.trial_balance.trial_balance import validate_filters
 
 value_fields = ("income", "expense", "gross_profit_loss")
diff --git a/erpnext/accounts/report/purchase_invoice_trends/purchase_invoice_trends.py b/erpnext/accounts/report/purchase_invoice_trends/purchase_invoice_trends.py
index ba236b9..b26c733 100644
--- a/erpnext/accounts/report/purchase_invoice_trends/purchase_invoice_trends.py
+++ b/erpnext/accounts/report/purchase_invoice_trends/purchase_invoice_trends.py
@@ -2,8 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
-from erpnext.controllers.trends	import get_columns,get_data
+
+from erpnext.controllers.trends import get_columns, get_data
+
 
 def execute(filters=None):
 	if not filters: filters ={}
diff --git a/erpnext/accounts/report/purchase_register/purchase_register.py b/erpnext/accounts/report/purchase_register/purchase_register.py
index 10edd41..5d4a03c 100644
--- a/erpnext/accounts/report/purchase_register/purchase_register.py
+++ b/erpnext/accounts/report/purchase_register/purchase_register.py
@@ -2,10 +2,16 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
+from frappe import _, msgprint
 from frappe.utils import flt
-from frappe import msgprint, _
-from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import get_accounting_dimensions, get_dimension_with_children
+
+from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import (
+	get_accounting_dimensions,
+	get_dimension_with_children,
+)
+
 
 def execute(filters=None):
 	return _execute(filters)
diff --git a/erpnext/accounts/report/received_items_to_be_billed/received_items_to_be_billed.py b/erpnext/accounts/report/received_items_to_be_billed/received_items_to_be_billed.py
index a5eced5..adf6b29 100644
--- a/erpnext/accounts/report/received_items_to_be_billed/received_items_to_be_billed.py
+++ b/erpnext/accounts/report/received_items_to_be_billed/received_items_to_be_billed.py
@@ -2,10 +2,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe import _
+
 from erpnext.accounts.report.non_billed_report import get_ordered_to_be_billed_data
 
+
 def execute(filters=None):
 	columns = get_column()
 	args = get_args()
diff --git a/erpnext/accounts/report/sales_invoice_trends/sales_invoice_trends.py b/erpnext/accounts/report/sales_invoice_trends/sales_invoice_trends.py
index ee3992f..0ec54c9 100644
--- a/erpnext/accounts/report/sales_invoice_trends/sales_invoice_trends.py
+++ b/erpnext/accounts/report/sales_invoice_trends/sales_invoice_trends.py
@@ -2,8 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
-from erpnext.controllers.trends	import get_columns,get_data
+
+from erpnext.controllers.trends import get_columns, get_data
+
 
 def execute(filters=None):
 	if not filters: filters ={}
diff --git a/erpnext/accounts/report/sales_payment_summary/sales_payment_summary.py b/erpnext/accounts/report/sales_payment_summary/sales_payment_summary.py
index ff77468..9ad7007 100644
--- a/erpnext/accounts/report/sales_payment_summary/sales_payment_summary.py
+++ b/erpnext/accounts/report/sales_payment_summary/sales_payment_summary.py
@@ -1,6 +1,7 @@
 # Copyright (c) 2013, Frappe Technologies Pvt. Ltd. and contributors
 # For license information, please see license.txt
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import cstr
diff --git a/erpnext/accounts/report/sales_payment_summary/test_sales_payment_summary.py b/erpnext/accounts/report/sales_payment_summary/test_sales_payment_summary.py
index e4a3d35..9fd7bc3 100644
--- a/erpnext/accounts/report/sales_payment_summary/test_sales_payment_summary.py
+++ b/erpnext/accounts/report/sales_payment_summary/test_sales_payment_summary.py
@@ -2,11 +2,17 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import unittest
+
 import frappe
-from erpnext.accounts.report.sales_payment_summary.sales_payment_summary import get_mode_of_payments, get_mode_of_payment_details
 from frappe.utils import today
+
 from erpnext.accounts.doctype.payment_entry.payment_entry import get_payment_entry
+from erpnext.accounts.report.sales_payment_summary.sales_payment_summary import (
+	get_mode_of_payment_details,
+	get_mode_of_payments,
+)
 
 test_dependencies = ["Sales Invoice"]
 
diff --git a/erpnext/accounts/report/sales_register/sales_register.py b/erpnext/accounts/report/sales_register/sales_register.py
index f38bd78..57b69aa 100644
--- a/erpnext/accounts/report/sales_register/sales_register.py
+++ b/erpnext/accounts/report/sales_register/sales_register.py
@@ -2,11 +2,17 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import flt
-from frappe import msgprint, _
+from frappe import _, msgprint
 from frappe.model.meta import get_field_precision
-from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import get_accounting_dimensions, get_dimension_with_children
+from frappe.utils import flt
+
+from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import (
+	get_accounting_dimensions,
+	get_dimension_with_children,
+)
+
 
 def execute(filters=None):
 	return _execute(filters)
diff --git a/erpnext/accounts/report/share_balance/share_balance.py b/erpnext/accounts/report/share_balance/share_balance.py
index 9f22f81..03efc9e 100644
--- a/erpnext/accounts/report/share_balance/share_balance.py
+++ b/erpnext/accounts/report/share_balance/share_balance.py
@@ -2,8 +2,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe import msgprint, _
+from frappe import _
+
 
 def execute(filters=None):
 	if not filters: filters = {}
diff --git a/erpnext/accounts/report/share_ledger/share_ledger.py b/erpnext/accounts/report/share_ledger/share_ledger.py
index 3ed3c91..9be6622 100644
--- a/erpnext/accounts/report/share_ledger/share_ledger.py
+++ b/erpnext/accounts/report/share_ledger/share_ledger.py
@@ -3,9 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import cstr, cint, getdate
-from frappe import msgprint, _
+from frappe import _
+
 
 def execute(filters=None):
 	if not filters: filters = {}
diff --git a/erpnext/accounts/report/supplier_ledger_summary/supplier_ledger_summary.py b/erpnext/accounts/report/supplier_ledger_summary/supplier_ledger_summary.py
index fbd25b1..00316ba 100644
--- a/erpnext/accounts/report/supplier_ledger_summary/supplier_ledger_summary.py
+++ b/erpnext/accounts/report/supplier_ledger_summary/supplier_ledger_summary.py
@@ -2,8 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
-from erpnext.accounts.report.customer_ledger_summary.customer_ledger_summary import PartyLedgerSummaryReport
+
+from erpnext.accounts.report.customer_ledger_summary.customer_ledger_summary import (
+	PartyLedgerSummaryReport,
+)
+
 
 def execute(filters=None):
 	args = {
diff --git a/erpnext/accounts/report/tax_detail/tax_detail.py b/erpnext/accounts/report/tax_detail/tax_detail.py
index 18436de..f03498d 100644
--- a/erpnext/accounts/report/tax_detail/tax_detail.py
+++ b/erpnext/accounts/report/tax_detail/tax_detail.py
@@ -3,8 +3,10 @@
 # Contributed by Case Solved and sponsored by Nulight Studios
 
 from __future__ import unicode_literals
-import frappe
+
 import json
+
+import frappe
 from frappe import _
 
 # NOTE: Payroll is implemented using Journal Entries which are included as GL Entries
diff --git a/erpnext/accounts/report/tax_detail/test_tax_detail.py b/erpnext/accounts/report/tax_detail/test_tax_detail.py
index 743ddba..e74b905 100644
--- a/erpnext/accounts/report/tax_detail/test_tax_detail.py
+++ b/erpnext/accounts/report/tax_detail/test_tax_detail.py
@@ -1,16 +1,26 @@
 from __future__ import unicode_literals
 
-import frappe
-import unittest
 import datetime
 import json
 import os
-from frappe.utils import getdate, add_to_date, get_first_day, get_last_day, get_year_start, get_year_ending
+import unittest
+
+import frappe
+from frappe.utils import (
+	add_to_date,
+	get_first_day,
+	get_last_day,
+	get_year_ending,
+	get_year_start,
+	getdate,
+)
+
 from .tax_detail import filter_match, save_custom_report
 
+
 class TestTaxDetail(unittest.TestCase):
 	def load_testdocs(self):
-		from erpnext.accounts.utils import get_fiscal_year, FiscalYearError
+		from erpnext.accounts.utils import FiscalYearError, get_fiscal_year
 		datapath, _ = os.path.splitext(os.path.realpath(__file__))
 		with open(datapath + '.json', 'r') as fp:
 			docs = json.load(fp)
diff --git a/erpnext/accounts/report/tds_computation_summary/tds_computation_summary.py b/erpnext/accounts/report/tds_computation_summary/tds_computation_summary.py
index 6b9df41..c4a8c7a 100644
--- a/erpnext/accounts/report/tds_computation_summary/tds_computation_summary.py
+++ b/erpnext/accounts/report/tds_computation_summary/tds_computation_summary.py
@@ -1,10 +1,15 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import flt
+
+from erpnext.accounts.doctype.tax_withholding_category.tax_withholding_category import (
+	get_advance_vouchers,
+	get_debit_note_amount,
+)
 from erpnext.accounts.utils import get_fiscal_year
-from erpnext.accounts.doctype.tax_withholding_category.tax_withholding_category \
-	import get_advance_vouchers, get_debit_note_amount
+
 
 def execute(filters=None):
 	validate_filters(filters)
diff --git a/erpnext/accounts/report/tds_payable_monthly/tds_payable_monthly.py b/erpnext/accounts/report/tds_payable_monthly/tds_payable_monthly.py
index ceefa31..9e1382b 100644
--- a/erpnext/accounts/report/tds_payable_monthly/tds_payable_monthly.py
+++ b/erpnext/accounts/report/tds_payable_monthly/tds_payable_monthly.py
@@ -2,9 +2,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import getdate
+
 
 def execute(filters=None):
 	filters["invoices"] = frappe.cache().hget("invoices", frappe.session.user)
diff --git a/erpnext/accounts/report/trial_balance/trial_balance.py b/erpnext/accounts/report/trial_balance/trial_balance.py
index 1fc0faa..d65bcc4 100644
--- a/erpnext/accounts/report/trial_balance/trial_balance.py
+++ b/erpnext/accounts/report/trial_balance/trial_balance.py
@@ -2,12 +2,21 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
+
+import frappe
 from frappe import _
-from frappe.utils import flt, getdate, formatdate, cstr
-from erpnext.accounts.report.financial_statements \
-	import filter_accounts, set_gl_entries_by_account, filter_out_zero_value_rows
-from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import get_accounting_dimensions, get_dimension_with_children
+from frappe.utils import cstr, flt, formatdate, getdate
+
+import erpnext
+from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import (
+	get_accounting_dimensions,
+	get_dimension_with_children,
+)
+from erpnext.accounts.report.financial_statements import (
+	filter_accounts,
+	filter_out_zero_value_rows,
+	set_gl_entries_by_account,
+)
 
 value_fields = ("opening_debit", "opening_credit", "debit", "credit", "closing_debit", "closing_credit")
 
diff --git a/erpnext/accounts/report/trial_balance_for_party/trial_balance_for_party.py b/erpnext/accounts/report/trial_balance_for_party/trial_balance_for_party.py
index f034e74..8e24544 100644
--- a/erpnext/accounts/report/trial_balance_for_party/trial_balance_for_party.py
+++ b/erpnext/accounts/report/trial_balance_for_party/trial_balance_for_party.py
@@ -2,11 +2,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import flt, cint
+from frappe.utils import cint, flt
+
 from erpnext.accounts.report.trial_balance.trial_balance import validate_filters
 
+
 def execute(filters=None):
 	validate_filters(filters)
 
diff --git a/erpnext/accounts/report/unpaid_expense_claim/unpaid_expense_claim.py b/erpnext/accounts/report/unpaid_expense_claim/unpaid_expense_claim.py
index 1250d67..71fe4a2 100644
--- a/erpnext/accounts/report/unpaid_expense_claim/unpaid_expense_claim.py
+++ b/erpnext/accounts/report/unpaid_expense_claim/unpaid_expense_claim.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 def execute(filters=None):
 	columns, data = [], []
 	columns = get_columns()
diff --git a/erpnext/accounts/report/utils.py b/erpnext/accounts/report/utils.py
index ba461ed..57ff9b0 100644
--- a/erpnext/accounts/report/utils.py
+++ b/erpnext/accounts/report/utils.py
@@ -1,9 +1,11 @@
 from __future__ import unicode_literals
+
 import frappe
+from frappe.utils import flt, formatdate, get_datetime_str
+
 from erpnext import get_company_currency, get_default_company
-from erpnext.setup.utils import get_exchange_rate
 from erpnext.accounts.doctype.fiscal_year.fiscal_year import get_from_and_to_date
-from frappe.utils import cint, get_datetime_str, formatdate, flt
+from erpnext.setup.utils import get_exchange_rate
 
 __exchange_rates = {}
 
diff --git a/erpnext/accounts/test/test_utils.py b/erpnext/accounts/test/test_utils.py
index 628c8ce..d7b60da 100644
--- a/erpnext/accounts/test/test_utils.py
+++ b/erpnext/accounts/test/test_utils.py
@@ -1,8 +1,11 @@
 from __future__ import unicode_literals
+
 import unittest
-from erpnext.accounts.party import get_party_shipping_address
+
 from frappe.test_runner import make_test_objects
 
+from erpnext.accounts.party import get_party_shipping_address
+
 
 class TestUtils(unittest.TestCase):
 	@classmethod
diff --git a/erpnext/accounts/utils.py b/erpnext/accounts/utils.py
index c46eb7e..4692869 100644
--- a/erpnext/accounts/utils.py
+++ b/erpnext/accounts/utils.py
@@ -4,18 +4,19 @@
 
 from __future__ import unicode_literals
 
-import frappe, erpnext
+import frappe
 import frappe.defaults
-from frappe.utils import nowdate, cstr, flt, cint, now, getdate
-from frappe import throw, _
-from frappe.utils import formatdate, get_number_format_info
-from six import iteritems
-# imported to enable erpnext.accounts.utils.get_account_currency
-from erpnext.accounts.doctype.account.account import get_account_currency
+from frappe import _, throw
 from frappe.model.meta import get_field_precision
+from frappe.utils import cint, cstr, flt, formatdate, get_number_format_info, getdate, now, nowdate
 
-from erpnext.stock.utils import get_stock_value_on
+import erpnext
+
+# imported to enable erpnext.accounts.utils.get_account_currency
+from erpnext.accounts.doctype.account.account import get_account_currency  # noqa
 from erpnext.stock import get_warehouse_account_map
+from erpnext.stock.utils import get_stock_value_on
+
 
 class StockValueAndAccountBalanceOutOfSync(frappe.ValidationError): pass
 class FiscalYearError(frappe.ValidationError): pass
@@ -886,7 +887,9 @@
 
 @frappe.whitelist()
 def get_coa(doctype, parent, is_root, chart=None):
-	from erpnext.accounts.doctype.account.chart_of_accounts.chart_of_accounts import build_tree_from_json
+	from erpnext.accounts.doctype.account.chart_of_accounts.chart_of_accounts import (
+		build_tree_from_json,
+	)
 
 	# add chart to flags to retrieve when called from expand all function
 	chart = chart if chart else frappe.flags.chart
diff --git a/erpnext/agriculture/doctype/agriculture_analysis_criteria/agriculture_analysis_criteria.py b/erpnext/agriculture/doctype/agriculture_analysis_criteria/agriculture_analysis_criteria.py
index 3bd3d7d..b0441c2 100644
--- a/erpnext/agriculture/doctype/agriculture_analysis_criteria/agriculture_analysis_criteria.py
+++ b/erpnext/agriculture/doctype/agriculture_analysis_criteria/agriculture_analysis_criteria.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class AgricultureAnalysisCriteria(Document):
 	pass
diff --git a/erpnext/agriculture/doctype/agriculture_analysis_criteria/test_agriculture_analysis_criteria.py b/erpnext/agriculture/doctype/agriculture_analysis_criteria/test_agriculture_analysis_criteria.py
index d79970b..4213e45 100644
--- a/erpnext/agriculture/doctype/agriculture_analysis_criteria/test_agriculture_analysis_criteria.py
+++ b/erpnext/agriculture/doctype/agriculture_analysis_criteria/test_agriculture_analysis_criteria.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestAgricultureAnalysisCriteria(unittest.TestCase):
 	pass
diff --git a/erpnext/agriculture/doctype/agriculture_task/agriculture_task.py b/erpnext/agriculture/doctype/agriculture_task/agriculture_task.py
index ce39368..642f491 100644
--- a/erpnext/agriculture/doctype/agriculture_task/agriculture_task.py
+++ b/erpnext/agriculture/doctype/agriculture_task/agriculture_task.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class AgricultureTask(Document):
 	pass
diff --git a/erpnext/agriculture/doctype/agriculture_task/test_agriculture_task.py b/erpnext/agriculture/doctype/agriculture_task/test_agriculture_task.py
index e828151..2b3c338 100644
--- a/erpnext/agriculture/doctype/agriculture_task/test_agriculture_task.py
+++ b/erpnext/agriculture/doctype/agriculture_task/test_agriculture_task.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestAgricultureTask(unittest.TestCase):
 	pass
diff --git a/erpnext/agriculture/doctype/crop/crop_dashboard.py b/erpnext/agriculture/doctype/crop/crop_dashboard.py
index 8f37735..02b937a 100644
--- a/erpnext/agriculture/doctype/crop/crop_dashboard.py
+++ b/erpnext/agriculture/doctype/crop/crop_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'transactions': [
diff --git a/erpnext/agriculture/doctype/crop/test_crop.py b/erpnext/agriculture/doctype/crop/test_crop.py
index b307983..1968a04 100644
--- a/erpnext/agriculture/doctype/crop/test_crop.py
+++ b/erpnext/agriculture/doctype/crop/test_crop.py
@@ -3,9 +3,10 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
 test_dependencies = ["Fertilizer"]
 
 class TestCrop(unittest.TestCase):
diff --git a/erpnext/agriculture/doctype/detected_disease/detected_disease.py b/erpnext/agriculture/doctype/detected_disease/detected_disease.py
index 8c90b83..b73fc32f 100644
--- a/erpnext/agriculture/doctype/detected_disease/detected_disease.py
+++ b/erpnext/agriculture/doctype/detected_disease/detected_disease.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class DetectedDisease(Document):
 	pass
diff --git a/erpnext/agriculture/doctype/disease/disease.py b/erpnext/agriculture/doctype/disease/disease.py
index 8e6ceb4..e474efe 100644
--- a/erpnext/agriculture/doctype/disease/disease.py
+++ b/erpnext/agriculture/doctype/disease/disease.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
 
+
 class Disease(Document):
 	def validate(self):
 		max_period = 0
diff --git a/erpnext/agriculture/doctype/disease/test_disease.py b/erpnext/agriculture/doctype/disease/test_disease.py
index 8086177..1959d1f 100644
--- a/erpnext/agriculture/doctype/disease/test_disease.py
+++ b/erpnext/agriculture/doctype/disease/test_disease.py
@@ -3,9 +3,11 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
+
 class TestDisease(unittest.TestCase):
 	def test_treatment_period(self):
 		disease = frappe.get_doc('Disease', 'Aphids')
diff --git a/erpnext/agriculture/doctype/fertilizer/fertilizer.py b/erpnext/agriculture/doctype/fertilizer/fertilizer.py
index c475f00..75c2542 100644
--- a/erpnext/agriculture/doctype/fertilizer/fertilizer.py
+++ b/erpnext/agriculture/doctype/fertilizer/fertilizer.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 
+
 class Fertilizer(Document):
 	@frappe.whitelist()
 	def load_contents(self):
diff --git a/erpnext/agriculture/doctype/fertilizer/test_fertilizer.py b/erpnext/agriculture/doctype/fertilizer/test_fertilizer.py
index 4c71d33..c11c61a 100644
--- a/erpnext/agriculture/doctype/fertilizer/test_fertilizer.py
+++ b/erpnext/agriculture/doctype/fertilizer/test_fertilizer.py
@@ -3,9 +3,11 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
+
 class TestFertilizer(unittest.TestCase):
 	def test_fertilizer_creation(self):
 		self.assertEqual(frappe.db.exists('Fertilizer', 'Urea'), 'Urea')
diff --git a/erpnext/agriculture/doctype/fertilizer_content/fertilizer_content.py b/erpnext/agriculture/doctype/fertilizer_content/fertilizer_content.py
index d385242..a050b71 100644
--- a/erpnext/agriculture/doctype/fertilizer_content/fertilizer_content.py
+++ b/erpnext/agriculture/doctype/fertilizer_content/fertilizer_content.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class FertilizerContent(Document):
 	pass
diff --git a/erpnext/agriculture/doctype/linked_location/linked_location.py b/erpnext/agriculture/doctype/linked_location/linked_location.py
index 3e49d3e..e622e84 100644
--- a/erpnext/agriculture/doctype/linked_location/linked_location.py
+++ b/erpnext/agriculture/doctype/linked_location/linked_location.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class LinkedLocation(Document):
 	pass
diff --git a/erpnext/agriculture/doctype/linked_plant_analysis/linked_plant_analysis.py b/erpnext/agriculture/doctype/linked_plant_analysis/linked_plant_analysis.py
index daea54b..608bf8c 100644
--- a/erpnext/agriculture/doctype/linked_plant_analysis/linked_plant_analysis.py
+++ b/erpnext/agriculture/doctype/linked_plant_analysis/linked_plant_analysis.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class LinkedPlantAnalysis(Document):
 	pass
diff --git a/erpnext/agriculture/doctype/linked_soil_analysis/linked_soil_analysis.py b/erpnext/agriculture/doctype/linked_soil_analysis/linked_soil_analysis.py
index c4e9245..02eb133 100644
--- a/erpnext/agriculture/doctype/linked_soil_analysis/linked_soil_analysis.py
+++ b/erpnext/agriculture/doctype/linked_soil_analysis/linked_soil_analysis.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class LinkedSoilAnalysis(Document):
 	pass
diff --git a/erpnext/agriculture/doctype/linked_soil_texture/linked_soil_texture.py b/erpnext/agriculture/doctype/linked_soil_texture/linked_soil_texture.py
index 1b75892..f580e16 100644
--- a/erpnext/agriculture/doctype/linked_soil_texture/linked_soil_texture.py
+++ b/erpnext/agriculture/doctype/linked_soil_texture/linked_soil_texture.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class LinkedSoilTexture(Document):
 	pass
diff --git a/erpnext/agriculture/doctype/plant_analysis/plant_analysis.py b/erpnext/agriculture/doctype/plant_analysis/plant_analysis.py
index b65f93d..6238250 100644
--- a/erpnext/agriculture/doctype/plant_analysis/plant_analysis.py
+++ b/erpnext/agriculture/doctype/plant_analysis/plant_analysis.py
@@ -3,10 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.naming import make_autoname
 from frappe.model.document import Document
 
+
 class PlantAnalysis(Document):
 	@frappe.whitelist()
 	def load_contents(self):
diff --git a/erpnext/agriculture/doctype/plant_analysis/test_plant_analysis.py b/erpnext/agriculture/doctype/plant_analysis/test_plant_analysis.py
index cbd2fd7..6b6e843 100644
--- a/erpnext/agriculture/doctype/plant_analysis/test_plant_analysis.py
+++ b/erpnext/agriculture/doctype/plant_analysis/test_plant_analysis.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestPlantAnalysis(unittest.TestCase):
 	pass
diff --git a/erpnext/agriculture/doctype/plant_analysis_criteria/plant_analysis_criteria.py b/erpnext/agriculture/doctype/plant_analysis_criteria/plant_analysis_criteria.py
index c173184..9f71987 100644
--- a/erpnext/agriculture/doctype/plant_analysis_criteria/plant_analysis_criteria.py
+++ b/erpnext/agriculture/doctype/plant_analysis_criteria/plant_analysis_criteria.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class PlantAnalysisCriteria(Document):
 	pass
diff --git a/erpnext/agriculture/doctype/soil_analysis/soil_analysis.py b/erpnext/agriculture/doctype/soil_analysis/soil_analysis.py
index 234d0d4..e0c8177 100644
--- a/erpnext/agriculture/doctype/soil_analysis/soil_analysis.py
+++ b/erpnext/agriculture/doctype/soil_analysis/soil_analysis.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 
+
 class SoilAnalysis(Document):
 	@frappe.whitelist()
 	def load_contents(self):
diff --git a/erpnext/agriculture/doctype/soil_analysis/test_soil_analysis.py b/erpnext/agriculture/doctype/soil_analysis/test_soil_analysis.py
index b89d756..24fe074 100644
--- a/erpnext/agriculture/doctype/soil_analysis/test_soil_analysis.py
+++ b/erpnext/agriculture/doctype/soil_analysis/test_soil_analysis.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestSoilAnalysis(unittest.TestCase):
 	pass
diff --git a/erpnext/agriculture/doctype/soil_analysis_criteria/soil_analysis_criteria.py b/erpnext/agriculture/doctype/soil_analysis_criteria/soil_analysis_criteria.py
index b073c20..09b917c 100644
--- a/erpnext/agriculture/doctype/soil_analysis_criteria/soil_analysis_criteria.py
+++ b/erpnext/agriculture/doctype/soil_analysis_criteria/soil_analysis_criteria.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class SoilAnalysisCriteria(Document):
 	pass
diff --git a/erpnext/agriculture/doctype/soil_texture/soil_texture.py b/erpnext/agriculture/doctype/soil_texture/soil_texture.py
index d7a5f09..636af77 100644
--- a/erpnext/agriculture/doctype/soil_texture/soil_texture.py
+++ b/erpnext/agriculture/doctype/soil_texture/soil_texture.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
-from frappe.utils import flt, cint
+from frappe.utils import cint, flt
+
 
 class SoilTexture(Document):
 	soil_edit_order = [2, 1, 0]
diff --git a/erpnext/agriculture/doctype/soil_texture/test_soil_texture.py b/erpnext/agriculture/doctype/soil_texture/test_soil_texture.py
index 16d105c..c701eb8 100644
--- a/erpnext/agriculture/doctype/soil_texture/test_soil_texture.py
+++ b/erpnext/agriculture/doctype/soil_texture/test_soil_texture.py
@@ -3,9 +3,11 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
+
 class TestSoilTexture(unittest.TestCase):
 	def test_texture_selection(self):
 		soil_tex = frappe.get_all('Soil Texture', fields=['name'], filters={'collection_datetime': '2017-11-08'})
diff --git a/erpnext/agriculture/doctype/soil_texture_criteria/soil_texture_criteria.py b/erpnext/agriculture/doctype/soil_texture_criteria/soil_texture_criteria.py
index a7525ae..9980e8b 100644
--- a/erpnext/agriculture/doctype/soil_texture_criteria/soil_texture_criteria.py
+++ b/erpnext/agriculture/doctype/soil_texture_criteria/soil_texture_criteria.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class SoilTextureCriteria(Document):
 	pass
diff --git a/erpnext/agriculture/doctype/water_analysis/test_water_analysis.py b/erpnext/agriculture/doctype/water_analysis/test_water_analysis.py
index b6467b7..5cddeeb 100644
--- a/erpnext/agriculture/doctype/water_analysis/test_water_analysis.py
+++ b/erpnext/agriculture/doctype/water_analysis/test_water_analysis.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestWaterAnalysis(unittest.TestCase):
 	pass
diff --git a/erpnext/agriculture/doctype/water_analysis/water_analysis.py b/erpnext/agriculture/doctype/water_analysis/water_analysis.py
index ece0700..228ae34 100644
--- a/erpnext/agriculture/doctype/water_analysis/water_analysis.py
+++ b/erpnext/agriculture/doctype/water_analysis/water_analysis.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
 
+
 class WaterAnalysis(Document):
 	@frappe.whitelist()
 	def load_contents(self):
diff --git a/erpnext/agriculture/doctype/water_analysis_criteria/water_analysis_criteria.py b/erpnext/agriculture/doctype/water_analysis_criteria/water_analysis_criteria.py
index 6833f90..8771733 100644
--- a/erpnext/agriculture/doctype/water_analysis_criteria/water_analysis_criteria.py
+++ b/erpnext/agriculture/doctype/water_analysis_criteria/water_analysis_criteria.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class WaterAnalysisCriteria(Document):
 	pass
diff --git a/erpnext/agriculture/doctype/weather/test_weather.py b/erpnext/agriculture/doctype/weather/test_weather.py
index b4ab3ae..1b4bab9 100644
--- a/erpnext/agriculture/doctype/weather/test_weather.py
+++ b/erpnext/agriculture/doctype/weather/test_weather.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestWeather(unittest.TestCase):
 	pass
diff --git a/erpnext/agriculture/doctype/weather/weather.py b/erpnext/agriculture/doctype/weather/weather.py
index 235e684..b41964d 100644
--- a/erpnext/agriculture/doctype/weather/weather.py
+++ b/erpnext/agriculture/doctype/weather/weather.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 
+
 class Weather(Document):
 	@frappe.whitelist()
 	def load_contents(self):
diff --git a/erpnext/agriculture/doctype/weather_parameter/weather_parameter.py b/erpnext/agriculture/doctype/weather_parameter/weather_parameter.py
index 89db74c..42fcbcb 100644
--- a/erpnext/agriculture/doctype/weather_parameter/weather_parameter.py
+++ b/erpnext/agriculture/doctype/weather_parameter/weather_parameter.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class WeatherParameter(Document):
 	pass
diff --git a/erpnext/assets/dashboard_fixtures.py b/erpnext/assets/dashboard_fixtures.py
index 2c70179..39f0f1a 100644
--- a/erpnext/assets/dashboard_fixtures.py
+++ b/erpnext/assets/dashboard_fixtures.py
@@ -1,13 +1,16 @@
 # Copyright (c) 2020, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 
-import frappe
 import json
-from frappe.utils import nowdate, add_months, get_date_str
+
+import frappe
 from frappe import _
+from frappe.utils import get_date_str, nowdate
+
 from erpnext.accounts.dashboard_fixtures import _get_fiscal_year
 from erpnext.buying.dashboard_fixtures import get_company_for_dashboards
 
+
 def get_data():
 
 	fiscal_year = _get_fiscal_year(nowdate())
diff --git a/erpnext/assets/doctype/asset/asset.py b/erpnext/assets/doctype/asset/asset.py
index f1bf31a..8ff4f97 100644
--- a/erpnext/assets/doctype/asset/asset.py
+++ b/erpnext/assets/doctype/asset/asset.py
@@ -3,18 +3,37 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext, math, json
+
+import json
+import math
+
+import frappe
 from frappe import _
+from frappe.utils import (
+	add_days,
+	add_months,
+	cint,
+	date_diff,
+	flt,
+	get_datetime,
+	get_last_day,
+	getdate,
+	month_diff,
+	nowdate,
+	today,
+)
 from six import string_types
-from frappe.utils import flt, add_months, cint, nowdate, getdate, today, date_diff, month_diff, add_days, get_last_day, get_datetime
-from frappe.model.document import Document
-from erpnext.assets.doctype.asset_category.asset_category import get_asset_category_account
-from erpnext.assets.doctype.asset.depreciation \
-	import get_disposal_account_and_cost_center, get_depreciation_accounts
+
+import erpnext
 from erpnext.accounts.general_ledger import make_reverse_gl_entries
-from erpnext.accounts.utils import get_account_currency
+from erpnext.assets.doctype.asset.depreciation import (
+	get_depreciation_accounts,
+	get_disposal_account_and_cost_center,
+)
+from erpnext.assets.doctype.asset_category.asset_category import get_asset_category_account
 from erpnext.controllers.accounts_controller import AccountsController
 
+
 class Asset(AccountsController):
 	def validate(self):
 		self.validate_asset_values()
@@ -783,6 +802,7 @@
 @frappe.whitelist()
 def make_asset_movement(assets, purpose=None):
 	import json
+
 	from six import string_types
 
 	if isinstance(assets, string_types):
diff --git a/erpnext/assets/doctype/asset/asset_dashboard.py b/erpnext/assets/doctype/asset/asset_dashboard.py
index 62bb4be..cd04e1d 100644
--- a/erpnext/assets/doctype/asset/asset_dashboard.py
+++ b/erpnext/assets/doctype/asset/asset_dashboard.py
@@ -1,5 +1,6 @@
 from __future__ import unicode_literals
 
+
 def get_data():
 	return {
 		'non_standard_fieldnames': {
diff --git a/erpnext/assets/doctype/asset/depreciation.py b/erpnext/assets/doctype/asset/depreciation.py
index 9a61b79..6097910 100644
--- a/erpnext/assets/doctype/asset/depreciation.py
+++ b/erpnext/assets/doctype/asset/depreciation.py
@@ -3,10 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import flt, today, getdate, cint
-from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import get_checks_for_pl_and_bs_accounts
+from frappe.utils import cint, flt, getdate, today
+
+from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import (
+	get_checks_for_pl_and_bs_accounts,
+)
+
 
 def post_depreciation_entries(date=None):
 	# Return if automatic booking of asset depreciation is disabled
diff --git a/erpnext/assets/doctype/asset/test_asset.py b/erpnext/assets/doctype/asset/test_asset.py
index 605ce2e..4cc9be5 100644
--- a/erpnext/assets/doctype/asset/test_asset.py
+++ b/erpnext/assets/doctype/asset/test_asset.py
@@ -3,14 +3,23 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import cstr, nowdate, getdate, flt, get_last_day, add_days, add_months
-from erpnext.assets.doctype.asset.depreciation import post_depreciation_entries, scrap_asset, restore_asset
-from erpnext.assets.doctype.asset.asset import make_sales_invoice
-from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import make_purchase_receipt
+
+import frappe
+from frappe.utils import add_days, add_months, cstr, flt, get_last_day, getdate, nowdate
+
 from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import make_purchase_invoice
-from erpnext.stock.doctype.purchase_receipt.purchase_receipt import make_purchase_invoice as make_invoice
+from erpnext.assets.doctype.asset.asset import make_sales_invoice
+from erpnext.assets.doctype.asset.depreciation import (
+	post_depreciation_entries,
+	restore_asset,
+	scrap_asset,
+)
+from erpnext.stock.doctype.purchase_receipt.purchase_receipt import (
+	make_purchase_invoice as make_invoice,
+)
+from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import make_purchase_receipt
+
 
 class TestAsset(unittest.TestCase):
 	def setUp(self):
diff --git a/erpnext/assets/doctype/asset_category/asset_category.py b/erpnext/assets/doctype/asset_category/asset_category.py
index 39032d6..1e56c01 100644
--- a/erpnext/assets/doctype/asset_category/asset_category.py
+++ b/erpnext/assets/doctype/asset_category/asset_category.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import cint, get_link_to_form
 from frappe.model.document import Document
+from frappe.utils import cint, get_link_to_form
+
 
 class AssetCategory(Document):
 	def validate(self):
diff --git a/erpnext/assets/doctype/asset_category/test_asset_category.py b/erpnext/assets/doctype/asset_category/test_asset_category.py
index 9f7ada6..53ec4ed 100644
--- a/erpnext/assets/doctype/asset_category/test_asset_category.py
+++ b/erpnext/assets/doctype/asset_category/test_asset_category.py
@@ -3,9 +3,11 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
+
 class TestAssetCategory(unittest.TestCase):
 	def test_mandatory_fields(self):
 		asset_category = frappe.new_doc("Asset Category")
diff --git a/erpnext/assets/doctype/asset_category_account/asset_category_account.py b/erpnext/assets/doctype/asset_category_account/asset_category_account.py
index 67925f4..66280ac 100644
--- a/erpnext/assets/doctype/asset_category_account/asset_category_account.py
+++ b/erpnext/assets/doctype/asset_category_account/asset_category_account.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class AssetCategoryAccount(Document):
 	pass
diff --git a/erpnext/assets/doctype/asset_finance_book/asset_finance_book.py b/erpnext/assets/doctype/asset_finance_book/asset_finance_book.py
index bdc2acf..c4f0953 100644
--- a/erpnext/assets/doctype/asset_finance_book/asset_finance_book.py
+++ b/erpnext/assets/doctype/asset_finance_book/asset_finance_book.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class AssetFinanceBook(Document):
 	pass
diff --git a/erpnext/assets/doctype/asset_maintenance/asset_maintenance.py b/erpnext/assets/doctype/asset_maintenance/asset_maintenance.py
index e14f1d8..ec55fa4 100644
--- a/erpnext/assets/doctype/asset_maintenance/asset_maintenance.py
+++ b/erpnext/assets/doctype/asset_maintenance/asset_maintenance.py
@@ -3,12 +3,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.document import Document
+from frappe import _, throw
 from frappe.desk.form import assign_to
-from frappe import throw, _
+from frappe.model.document import Document
 from frappe.utils import add_days, add_months, add_years, getdate, nowdate
 
+
 class AssetMaintenance(Document):
 	def validate(self):
 		for task in self.get('asset_maintenance_tasks'):
diff --git a/erpnext/assets/doctype/asset_maintenance/test_asset_maintenance.py b/erpnext/assets/doctype/asset_maintenance/test_asset_maintenance.py
index 7610152..0f91508 100644
--- a/erpnext/assets/doctype/asset_maintenance/test_asset_maintenance.py
+++ b/erpnext/assets/doctype/asset_maintenance/test_asset_maintenance.py
@@ -3,11 +3,14 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import nowdate, get_last_day, add_days
-from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import make_purchase_receipt
+
+import frappe
+from frappe.utils import add_days, get_last_day, nowdate
+
 from erpnext.assets.doctype.asset_maintenance.asset_maintenance import calculate_next_due_date
+from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import make_purchase_receipt
+
 
 class TestAssetMaintenance(unittest.TestCase):
 	def setUp(self):
diff --git a/erpnext/assets/doctype/asset_maintenance_log/asset_maintenance_log.py b/erpnext/assets/doctype/asset_maintenance_log/asset_maintenance_log.py
index 34facd8..1f23936 100644
--- a/erpnext/assets/doctype/asset_maintenance_log/asset_maintenance_log.py
+++ b/erpnext/assets/doctype/asset_maintenance_log/asset_maintenance_log.py
@@ -3,12 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.document import Document
 from frappe import _
-from frappe.utils import nowdate, getdate
+from frappe.model.document import Document
+from frappe.utils import getdate, nowdate
+
 from erpnext.assets.doctype.asset_maintenance.asset_maintenance import calculate_next_due_date
 
+
 class AssetMaintenanceLog(Document):
 	def validate(self):
 		if getdate(self.due_date) < getdate(nowdate()) and self.maintenance_status not in ["Completed", "Cancelled"]:
diff --git a/erpnext/assets/doctype/asset_maintenance_log/test_asset_maintenance_log.py b/erpnext/assets/doctype/asset_maintenance_log/test_asset_maintenance_log.py
index a1ec879..7ad69e9 100644
--- a/erpnext/assets/doctype/asset_maintenance_log/test_asset_maintenance_log.py
+++ b/erpnext/assets/doctype/asset_maintenance_log/test_asset_maintenance_log.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestAssetMaintenanceLog(unittest.TestCase):
 	pass
diff --git a/erpnext/assets/doctype/asset_maintenance_task/asset_maintenance_task.py b/erpnext/assets/doctype/asset_maintenance_task/asset_maintenance_task.py
index 2a5666d..2280f55 100644
--- a/erpnext/assets/doctype/asset_maintenance_task/asset_maintenance_task.py
+++ b/erpnext/assets/doctype/asset_maintenance_task/asset_maintenance_task.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class AssetMaintenanceTask(Document):
 	pass
diff --git a/erpnext/assets/doctype/asset_maintenance_team/asset_maintenance_team.py b/erpnext/assets/doctype/asset_maintenance_team/asset_maintenance_team.py
index f741a8f..46e9029 100644
--- a/erpnext/assets/doctype/asset_maintenance_team/asset_maintenance_team.py
+++ b/erpnext/assets/doctype/asset_maintenance_team/asset_maintenance_team.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class AssetMaintenanceTeam(Document):
 	pass
diff --git a/erpnext/assets/doctype/asset_maintenance_team/test_asset_maintenance_team.py b/erpnext/assets/doctype/asset_maintenance_team/test_asset_maintenance_team.py
index a0c0b14..8d757b7 100644
--- a/erpnext/assets/doctype/asset_maintenance_team/test_asset_maintenance_team.py
+++ b/erpnext/assets/doctype/asset_maintenance_team/test_asset_maintenance_team.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestAssetMaintenanceTeam(unittest.TestCase):
 	pass
diff --git a/erpnext/assets/doctype/asset_movement/asset_movement.py b/erpnext/assets/doctype/asset_movement/asset_movement.py
index 1771e27..901bdb5 100644
--- a/erpnext/assets/doctype/asset_movement/asset_movement.py
+++ b/erpnext/assets/doctype/asset_movement/asset_movement.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
 
+
 class AssetMovement(Document):
 	def validate(self):
 		self.validate_asset()
diff --git a/erpnext/assets/doctype/asset_movement/test_asset_movement.py b/erpnext/assets/doctype/asset_movement/test_asset_movement.py
index 2b2d2b4..058bbd1 100644
--- a/erpnext/assets/doctype/asset_movement/test_asset_movement.py
+++ b/erpnext/assets/doctype/asset_movement/test_asset_movement.py
@@ -3,16 +3,16 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-import erpnext
-from erpnext.stock.doctype.item.test_item import make_item
-from frappe.utils import now, nowdate, get_last_day, add_days
+
+import frappe
+from frappe.utils import now
+
 from erpnext.assets.doctype.asset.test_asset import create_asset_data
-from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
 from erpnext.hr.doctype.employee.test_employee import make_employee
 from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import make_purchase_receipt
 
+
 class TestAssetMovement(unittest.TestCase):
 	def setUp(self):
 		frappe.db.set_value("Company", "_Test Company", "capital_work_in_progress_account", "CWIP Account - _TC")
diff --git a/erpnext/assets/doctype/asset_movement_item/asset_movement_item.py b/erpnext/assets/doctype/asset_movement_item/asset_movement_item.py
index 4c6aaab..24da371 100644
--- a/erpnext/assets/doctype/asset_movement_item/asset_movement_item.py
+++ b/erpnext/assets/doctype/asset_movement_item/asset_movement_item.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class AssetMovementItem(Document):
 	pass
diff --git a/erpnext/assets/doctype/asset_repair/asset_repair.py b/erpnext/assets/doctype/asset_repair/asset_repair.py
index 746f582..99a7d9b 100644
--- a/erpnext/assets/doctype/asset_repair/asset_repair.py
+++ b/erpnext/assets/doctype/asset_repair/asset_repair.py
@@ -3,13 +3,16 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import time_diff_in_hours, getdate, add_months, flt, cint
+from frappe.utils import add_months, cint, flt, getdate, time_diff_in_hours
+
 from erpnext.accounts.general_ledger import make_gl_entries
 from erpnext.assets.doctype.asset.asset import get_asset_account
 from erpnext.controllers.accounts_controller import AccountsController
 
+
 class AssetRepair(AccountsController):
 	def validate(self):
 		self.asset_doc = frappe.get_doc('Asset', self.asset)
diff --git a/erpnext/assets/doctype/asset_repair/test_asset_repair.py b/erpnext/assets/doctype/asset_repair/test_asset_repair.py
index 5e727d0..9945a32 100644
--- a/erpnext/assets/doctype/asset_repair/test_asset_repair.py
+++ b/erpnext/assets/doctype/asset_repair/test_asset_repair.py
@@ -2,10 +2,18 @@
 # Copyright (c) 2017, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
-import frappe
-from frappe.utils import nowdate, flt
+
 import unittest
-from erpnext.assets.doctype.asset.test_asset import create_asset_data, create_asset, set_depreciation_settings_in_company
+
+import frappe
+from frappe.utils import flt, nowdate
+
+from erpnext.assets.doctype.asset.test_asset import (
+	create_asset,
+	create_asset_data,
+	set_depreciation_settings_in_company,
+)
+
 
 class TestAssetRepair(unittest.TestCase):
 	def setUp(self):
@@ -110,8 +118,8 @@
 	return asset.finance_books[0].total_number_of_depreciations
 
 def create_asset_repair(**args):
-	from erpnext.stock.doctype.warehouse.test_warehouse import create_warehouse
 	from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import make_purchase_invoice
+	from erpnext.stock.doctype.warehouse.test_warehouse import create_warehouse
 
 	args = frappe._dict(args)
 
diff --git a/erpnext/assets/doctype/asset_repair_consumed_item/asset_repair_consumed_item.py b/erpnext/assets/doctype/asset_repair_consumed_item/asset_repair_consumed_item.py
index fa22a57..2a8d64e 100644
--- a/erpnext/assets/doctype/asset_repair_consumed_item/asset_repair_consumed_item.py
+++ b/erpnext/assets/doctype/asset_repair_consumed_item/asset_repair_consumed_item.py
@@ -4,5 +4,6 @@
 # import frappe
 from frappe.model.document import Document
 
+
 class AssetRepairConsumedItem(Document):
 	pass
diff --git a/erpnext/assets/doctype/asset_value_adjustment/asset_value_adjustment.py b/erpnext/assets/doctype/asset_value_adjustment/asset_value_adjustment.py
index 2f6b5ee..2c11018 100644
--- a/erpnext/assets/doctype/asset_value_adjustment/asset_value_adjustment.py
+++ b/erpnext/assets/doctype/asset_value_adjustment/asset_value_adjustment.py
@@ -3,12 +3,17 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import flt, getdate, cint, date_diff, formatdate
-from erpnext.assets.doctype.asset.depreciation import get_depreciation_accounts
 from frappe.model.document import Document
-from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import get_checks_for_pl_and_bs_accounts
+from frappe.utils import cint, date_diff, flt, formatdate, getdate
+
+from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import (
+	get_checks_for_pl_and_bs_accounts,
+)
+from erpnext.assets.doctype.asset.depreciation import get_depreciation_accounts
+
 
 class AssetValueAdjustment(Document):
 	def validate(self):
diff --git a/erpnext/assets/doctype/asset_value_adjustment/test_asset_value_adjustment.py b/erpnext/assets/doctype/asset_value_adjustment/test_asset_value_adjustment.py
index a9dc979..52728d6 100644
--- a/erpnext/assets/doctype/asset_value_adjustment/test_asset_value_adjustment.py
+++ b/erpnext/assets/doctype/asset_value_adjustment/test_asset_value_adjustment.py
@@ -3,12 +3,17 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import nowdate, get_last_day, add_days
+
+import frappe
+from frappe.utils import add_days, get_last_day, nowdate
+
 from erpnext.assets.doctype.asset.test_asset import create_asset_data
+from erpnext.assets.doctype.asset_value_adjustment.asset_value_adjustment import (
+	get_current_asset_value,
+)
 from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import make_purchase_receipt
-from erpnext.assets.doctype.asset_value_adjustment.asset_value_adjustment import get_current_asset_value
+
 
 class TestAssetValueAdjustment(unittest.TestCase):
 	def setUp(self):
diff --git a/erpnext/assets/doctype/depreciation_schedule/depreciation_schedule.py b/erpnext/assets/doctype/depreciation_schedule/depreciation_schedule.py
index 54fba3f..3199b7d 100644
--- a/erpnext/assets/doctype/depreciation_schedule/depreciation_schedule.py
+++ b/erpnext/assets/doctype/depreciation_schedule/depreciation_schedule.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class DepreciationSchedule(Document):
 	pass
diff --git a/erpnext/assets/doctype/linked_location/linked_location.py b/erpnext/assets/doctype/linked_location/linked_location.py
index 3e49d3e..e622e84 100644
--- a/erpnext/assets/doctype/linked_location/linked_location.py
+++ b/erpnext/assets/doctype/linked_location/linked_location.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class LinkedLocation(Document):
 	pass
diff --git a/erpnext/assets/doctype/location/location.py b/erpnext/assets/doctype/location/location.py
index 317894c..1430306 100644
--- a/erpnext/assets/doctype/location/location.py
+++ b/erpnext/assets/doctype/location/location.py
@@ -8,8 +8,6 @@
 import math
 
 import frappe
-from frappe import _
-from frappe.model.document import Document
 from frappe.utils import flt
 from frappe.utils.nestedset import NestedSet, update_nsm
 
diff --git a/erpnext/assets/doctype/maintenance_team_member/maintenance_team_member.py b/erpnext/assets/doctype/maintenance_team_member/maintenance_team_member.py
index 3d9e555..8fc5c9c 100644
--- a/erpnext/assets/doctype/maintenance_team_member/maintenance_team_member.py
+++ b/erpnext/assets/doctype/maintenance_team_member/maintenance_team_member.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class MaintenanceTeamMember(Document):
 	pass
diff --git a/erpnext/assets/doctype/maintenance_team_member/test_maintenance_team_member.py b/erpnext/assets/doctype/maintenance_team_member/test_maintenance_team_member.py
index c805e56..f8958c6 100644
--- a/erpnext/assets/doctype/maintenance_team_member/test_maintenance_team_member.py
+++ b/erpnext/assets/doctype/maintenance_team_member/test_maintenance_team_member.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestMaintenanceTeamMember(unittest.TestCase):
 	pass
diff --git a/erpnext/assets/report/fixed_asset_register/fixed_asset_register.py b/erpnext/assets/report/fixed_asset_register/fixed_asset_register.py
index 7d07397..e370b9d 100644
--- a/erpnext/assets/report/fixed_asset_register/fixed_asset_register.py
+++ b/erpnext/assets/report/fixed_asset_register/fixed_asset_register.py
@@ -2,10 +2,17 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import cstr, today, flt, add_years, formatdate, getdate
-from erpnext.accounts.report.financial_statements import get_period_list, get_fiscal_year_data, validate_fiscal_year
+from frappe.utils import cstr, flt, formatdate, getdate
+
+from erpnext.accounts.report.financial_statements import (
+	get_fiscal_year_data,
+	get_period_list,
+	validate_fiscal_year,
+)
+
 
 def execute(filters=None):
 	filters = frappe._dict(filters or {})
diff --git a/erpnext/buying/doctype/buying_settings/buying_settings.py b/erpnext/buying/doctype/buying_settings/buying_settings.py
index a634a09..9e72c18 100644
--- a/erpnext/buying/doctype/buying_settings/buying_settings.py
+++ b/erpnext/buying/doctype/buying_settings/buying_settings.py
@@ -4,10 +4,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
 
+import frappe
 from frappe.model.document import Document
 
+
 class BuyingSettings(Document):
 	def validate(self):
 		for key in ["supplier_group", "supp_master_name", "maintain_same_rate", "buying_price_list"]:
diff --git a/erpnext/buying/doctype/buying_settings/test_buying_settings.py b/erpnext/buying/doctype/buying_settings/test_buying_settings.py
index bf6eec6..4998aeb 100644
--- a/erpnext/buying/doctype/buying_settings/test_buying_settings.py
+++ b/erpnext/buying/doctype/buying_settings/test_buying_settings.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestBuyingSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/buying/doctype/purchase_order/purchase_order.py b/erpnext/buying/doctype/purchase_order/purchase_order.py
index ca3bd90..ac86337 100644
--- a/erpnext/buying/doctype/purchase_order/purchase_order.py
+++ b/erpnext/buying/doctype/purchase_order/purchase_order.py
@@ -2,23 +2,30 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import json
-from frappe.utils import cstr, flt, cint
-from frappe import msgprint, _
-from frappe.model.mapper import get_mapped_doc
-from erpnext.controllers.buying_controller import BuyingController
-from erpnext.stock.doctype.item.item import get_last_purchase_details
-from erpnext.stock.stock_balance import update_bin_qty, get_ordered_qty
+
+import frappe
+from frappe import _, msgprint
 from frappe.desk.notifications import clear_doctype_notifications
-from erpnext.buying.utils import validate_for_items, check_on_hold_or_closed_status
-from erpnext.stock.utils import get_bin
+from frappe.model.mapper import get_mapped_doc
+from frappe.utils import cint, cstr, flt
+
+from erpnext.accounts.doctype.sales_invoice.sales_invoice import (
+	unlink_inter_company_doc,
+	update_linked_doc,
+	validate_inter_company_party,
+)
+from erpnext.accounts.doctype.tax_withholding_category.tax_withholding_category import (
+	get_party_tax_withholding_details,
+)
 from erpnext.accounts.party import get_party_account_currency
-from erpnext.stock.doctype.item.item import get_item_defaults
+from erpnext.buying.utils import check_on_hold_or_closed_status, validate_for_items
+from erpnext.controllers.buying_controller import BuyingController
 from erpnext.setup.doctype.item_group.item_group import get_item_group_defaults
-from erpnext.accounts.doctype.tax_withholding_category.tax_withholding_category import get_party_tax_withholding_details
-from erpnext.accounts.doctype.sales_invoice.sales_invoice import (validate_inter_company_party,
-	update_linked_doc, unlink_inter_company_doc)
+from erpnext.stock.doctype.item.item import get_item_defaults, get_last_purchase_details
+from erpnext.stock.stock_balance import get_ordered_qty, update_bin_qty
+from erpnext.stock.utils import get_bin
 
 form_grid_templates = {
 	"items": "templates/form_grid/item_grid.html"
diff --git a/erpnext/buying/doctype/purchase_order/purchase_order_dashboard.py b/erpnext/buying/doctype/purchase_order/purchase_order_dashboard.py
index ab514da..af1dceb 100644
--- a/erpnext/buying/doctype/purchase_order/purchase_order_dashboard.py
+++ b/erpnext/buying/doctype/purchase_order/purchase_order_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'purchase_order',
diff --git a/erpnext/buying/doctype/purchase_order/test_purchase_order.py b/erpnext/buying/doctype/purchase_order/test_purchase_order.py
index fa174ba..1453b8e 100644
--- a/erpnext/buying/doctype/purchase_order/test_purchase_order.py
+++ b/erpnext/buying/doctype/purchase_order/test_purchase_order.py
@@ -2,24 +2,31 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import unittest
-import frappe
-import json
-import frappe.defaults
-from erpnext.accounts.doctype.payment_entry.payment_entry import get_payment_entry
-from frappe.utils import flt, add_days, nowdate, getdate
-from erpnext.stock.doctype.item.test_item import make_item
-from erpnext.buying.doctype.purchase_order.purchase_order \
-	import (make_purchase_receipt, make_purchase_invoice as make_pi_from_po, make_rm_stock_entry as make_subcontract_transfer_entry)
-from erpnext.stock.doctype.purchase_receipt.purchase_receipt import make_purchase_invoice as make_pi_from_pr
-from erpnext.stock.doctype.material_request.test_material_request import make_material_request
-from erpnext.stock.doctype.material_request.material_request import make_purchase_order
-from erpnext.stock.doctype.stock_entry.test_stock_entry import make_stock_entry
-from erpnext.controllers.accounts_controller import update_child_qty_rate
-from erpnext.controllers.status_updater import OverAllowanceError
-from erpnext.manufacturing.doctype.blanket_order.test_blanket_order import make_blanket_order
 
-from erpnext.stock.doctype.batch.test_batch import make_new_batch
+import json
+import unittest
+
+import frappe
+from frappe.utils import add_days, flt, getdate, nowdate
+
+from erpnext.accounts.doctype.payment_entry.payment_entry import get_payment_entry
+from erpnext.buying.doctype.purchase_order.purchase_order import (
+	make_purchase_invoice as make_pi_from_po,
+)
+from erpnext.buying.doctype.purchase_order.purchase_order import make_purchase_receipt
+from erpnext.buying.doctype.purchase_order.purchase_order import (
+	make_rm_stock_entry as make_subcontract_transfer_entry,
+)
+from erpnext.controllers.accounts_controller import update_child_qty_rate
+from erpnext.manufacturing.doctype.blanket_order.test_blanket_order import make_blanket_order
+from erpnext.stock.doctype.item.test_item import make_item
+from erpnext.stock.doctype.material_request.material_request import make_purchase_order
+from erpnext.stock.doctype.material_request.test_material_request import make_material_request
+from erpnext.stock.doctype.purchase_receipt.purchase_receipt import (
+	make_purchase_invoice as make_pi_from_pr,
+)
+from erpnext.stock.doctype.stock_entry.test_stock_entry import make_stock_entry
+
 
 class TestPurchaseOrder(unittest.TestCase):
 	def test_make_purchase_receipt(self):
@@ -415,10 +422,12 @@
 		self.assertEqual(po.get("items")[0].received_qty, 9)
 
 		# Make return purchase receipt, purchase invoice and check quantity
-		from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt \
-				import make_purchase_receipt as make_purchase_receipt_return
-		from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice \
-				import make_purchase_invoice as make_purchase_invoice_return
+		from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import (
+			make_purchase_invoice as make_purchase_invoice_return,
+		)
+		from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import (
+			make_purchase_receipt as make_purchase_receipt_return,
+		)
 
 		pr1 = make_purchase_receipt_return(is_return=1, return_against=pr.name, qty=-3, do_not_submit=True)
 		pr1.items[0].purchase_order = po.name
@@ -484,7 +493,9 @@
 
 
 	def test_make_purchase_invoice_with_terms(self):
-		from erpnext.selling.doctype.sales_order.test_sales_order import automatically_fetch_payment_terms, compare_payment_schedules
+		from erpnext.selling.doctype.sales_order.test_sales_order import (
+			automatically_fetch_payment_terms,
+		)
 
 		automatically_fetch_payment_terms()
 		po = create_purchase_order(do_not_save=True)
@@ -977,9 +988,14 @@
 		self.assertEqual(po_doc.items[0].blanket_order, None)
 
 	def test_payment_terms_are_fetched_when_creating_purchase_invoice(self):
-		from erpnext.accounts.doctype.payment_entry.test_payment_entry import create_payment_terms_template
+		from erpnext.accounts.doctype.payment_entry.test_payment_entry import (
+			create_payment_terms_template,
+		)
 		from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import make_purchase_invoice
-		from erpnext.selling.doctype.sales_order.test_sales_order import automatically_fetch_payment_terms, compare_payment_schedules
+		from erpnext.selling.doctype.sales_order.test_sales_order import (
+			automatically_fetch_payment_terms,
+			compare_payment_schedules,
+		)
 
 		automatically_fetch_payment_terms()
 
diff --git a/erpnext/buying/doctype/purchase_order_item/purchase_order_item.py b/erpnext/buying/doctype/purchase_order_item/purchase_order_item.py
index b6e28b6..a391a3d 100644
--- a/erpnext/buying/doctype/purchase_order_item/purchase_order_item.py
+++ b/erpnext/buying/doctype/purchase_order_item/purchase_order_item.py
@@ -2,10 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
+import frappe
 from frappe.model.document import Document
 
+
 class PurchaseOrderItem(Document):
 	pass
 
diff --git a/erpnext/buying/doctype/purchase_order_item_supplied/purchase_order_item_supplied.py b/erpnext/buying/doctype/purchase_order_item_supplied/purchase_order_item_supplied.py
index c85ca2f..909faec 100644
--- a/erpnext/buying/doctype/purchase_order_item_supplied/purchase_order_item_supplied.py
+++ b/erpnext/buying/doctype/purchase_order_item_supplied/purchase_order_item_supplied.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class PurchaseOrderItemSupplied(Document):
 	pass
diff --git a/erpnext/buying/doctype/purchase_receipt_item_supplied/purchase_receipt_item_supplied.py b/erpnext/buying/doctype/purchase_receipt_item_supplied/purchase_receipt_item_supplied.py
index 00c93ed..caec4e8 100644
--- a/erpnext/buying/doctype/purchase_receipt_item_supplied/purchase_receipt_item_supplied.py
+++ b/erpnext/buying/doctype/purchase_receipt_item_supplied/purchase_receipt_item_supplied.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class PurchaseReceiptItemSupplied(Document):
 	pass
diff --git a/erpnext/buying/doctype/request_for_quotation/request_for_quotation.py b/erpnext/buying/doctype/request_for_quotation/request_for_quotation.py
index 8ed6c9e..af1a9a9 100644
--- a/erpnext/buying/doctype/request_for_quotation/request_for_quotation.py
+++ b/erpnext/buying/doctype/request_for_quotation/request_for_quotation.py
@@ -3,21 +3,24 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, json
-from frappe import _
-from frappe.model.mapper import get_mapped_doc
-from frappe.utils import get_url, cint
-from frappe.utils.user import get_user_fullname
-from frappe.utils.print_format import download_pdf
-from frappe.desk.form.load import get_attachments
-from frappe.core.doctype.communication.email import make
-from erpnext.accounts.party import get_party_account_currency, get_party_details
-from erpnext.stock.doctype.material_request.material_request import set_missing_values
-from erpnext.controllers.buying_controller import BuyingController
-from erpnext.buying.utils import validate_for_items
 
+import json
+
+import frappe
+from frappe import _
+from frappe.core.doctype.communication.email import make
+from frappe.desk.form.load import get_attachments
+from frappe.model.mapper import get_mapped_doc
+from frappe.utils import get_url
+from frappe.utils.print_format import download_pdf
+from frappe.utils.user import get_user_fullname
 from six import string_types
 
+from erpnext.accounts.party import get_party_account_currency, get_party_details
+from erpnext.buying.utils import validate_for_items
+from erpnext.controllers.buying_controller import BuyingController
+from erpnext.stock.doctype.material_request.material_request import set_missing_values
+
 STANDARD_USERS = ("Guest", "Administrator")
 
 class RequestforQuotation(BuyingController):
diff --git a/erpnext/buying/doctype/request_for_quotation/request_for_quotation_dashboard.py b/erpnext/buying/doctype/request_for_quotation/request_for_quotation_dashboard.py
index 751336d..0708cab 100644
--- a/erpnext/buying/doctype/request_for_quotation/request_for_quotation_dashboard.py
+++ b/erpnext/buying/doctype/request_for_quotation/request_for_quotation_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
 	return {
diff --git a/erpnext/buying/doctype/request_for_quotation/test_request_for_quotation.py b/erpnext/buying/doctype/request_for_quotation/test_request_for_quotation.py
index 36f87b0..33fde8e 100644
--- a/erpnext/buying/doctype/request_for_quotation/test_request_for_quotation.py
+++ b/erpnext/buying/doctype/request_for_quotation/test_request_for_quotation.py
@@ -7,12 +7,16 @@
 
 import frappe
 from frappe.utils import nowdate
+
+from erpnext.buying.doctype.request_for_quotation.request_for_quotation import (
+	create_supplier_quotation,
+	make_supplier_quotation_from_rfq,
+)
+from erpnext.crm.doctype.opportunity.opportunity import make_request_for_quotation as make_rfq
+from erpnext.crm.doctype.opportunity.test_opportunity import make_opportunity
 from erpnext.stock.doctype.item.test_item import make_item
 from erpnext.templates.pages.rfq import check_supplier_has_docname_access
-from erpnext.buying.doctype.request_for_quotation.request_for_quotation import make_supplier_quotation_from_rfq
-from erpnext.buying.doctype.request_for_quotation.request_for_quotation import create_supplier_quotation
-from erpnext.crm.doctype.opportunity.test_opportunity import make_opportunity
-from erpnext.crm.doctype.opportunity.opportunity import make_request_for_quotation as make_rfq
+
 
 class TestRequestforQuotation(unittest.TestCase):
 	def test_quote_status(self):
diff --git a/erpnext/buying/doctype/request_for_quotation_item/request_for_quotation_item.py b/erpnext/buying/doctype/request_for_quotation_item/request_for_quotation_item.py
index cc897af..35f3305 100644
--- a/erpnext/buying/doctype/request_for_quotation_item/request_for_quotation_item.py
+++ b/erpnext/buying/doctype/request_for_quotation_item/request_for_quotation_item.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class RequestforQuotationItem(Document):
 	pass
diff --git a/erpnext/buying/doctype/request_for_quotation_supplier/request_for_quotation_supplier.py b/erpnext/buying/doctype/request_for_quotation_supplier/request_for_quotation_supplier.py
index 4b0bbbe..47c0deb 100644
--- a/erpnext/buying/doctype/request_for_quotation_supplier/request_for_quotation_supplier.py
+++ b/erpnext/buying/doctype/request_for_quotation_supplier/request_for_quotation_supplier.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class RequestforQuotationSupplier(Document):
 	pass
diff --git a/erpnext/buying/doctype/supplier/supplier.py b/erpnext/buying/doctype/supplier/supplier.py
index c9750ca..2a9f784 100644
--- a/erpnext/buying/doctype/supplier/supplier.py
+++ b/erpnext/buying/doctype/supplier/supplier.py
@@ -2,13 +2,18 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 import frappe.defaults
-from frappe import msgprint, _
+from frappe import _, msgprint
+from frappe.contacts.address_and_contact import (
+	delete_contact_and_address,
+	load_address_and_contact,
+)
 from frappe.model.naming import set_name_by_naming_series
-from frappe.contacts.address_and_contact import load_address_and_contact, delete_contact_and_address
+
+from erpnext.accounts.party import get_dashboard_info, validate_party_accounts
 from erpnext.utilities.transaction_base import TransactionBase
-from erpnext.accounts.party import validate_party_accounts, get_dashboard_info, get_timeline_data # keep this
 
 
 class Supplier(TransactionBase):
@@ -92,9 +97,10 @@
 				self.db_set('email_id', self.email_id)
 
 	def create_primary_address(self):
-		from erpnext.selling.doctype.customer.customer import make_address
 		from frappe.contacts.doctype.address.address import get_address_display
 
+		from erpnext.selling.doctype.customer.customer import make_address
+
 		if self.flags.is_new_doc and self.get('address_line1'):
 			address = make_address(self)
 			address_display = get_address_display(address.name)
diff --git a/erpnext/buying/doctype/supplier/test_supplier.py b/erpnext/buying/doctype/supplier/test_supplier.py
index 8980466..8a4eefa 100644
--- a/erpnext/buying/doctype/supplier/test_supplier.py
+++ b/erpnext/buying/doctype/supplier/test_supplier.py
@@ -2,11 +2,13 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
+import unittest
 
-import frappe, unittest
+import frappe
+from frappe.test_runner import make_test_records
+
 from erpnext.accounts.party import get_due_date
 from erpnext.exceptions import PartyDisabled
-from frappe.test_runner import make_test_records
 
 test_dependencies = ['Payment Term', 'Payment Terms Template']
 test_records = frappe.get_test_records('Supplier')
diff --git a/erpnext/buying/doctype/supplier_item_group/supplier_item_group.py b/erpnext/buying/doctype/supplier_item_group/supplier_item_group.py
index 4473dde..6d71f7d 100644
--- a/erpnext/buying/doctype/supplier_item_group/supplier_item_group.py
+++ b/erpnext/buying/doctype/supplier_item_group/supplier_item_group.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
 
+
 class SupplierItemGroup(Document):
 	def validate(self):
 		exists = frappe.db.exists({
diff --git a/erpnext/buying/doctype/supplier_item_group/test_supplier_item_group.py b/erpnext/buying/doctype/supplier_item_group/test_supplier_item_group.py
index c75044d..55ba85e 100644
--- a/erpnext/buying/doctype/supplier_item_group/test_supplier_item_group.py
+++ b/erpnext/buying/doctype/supplier_item_group/test_supplier_item_group.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestSupplierItemGroup(unittest.TestCase):
 	pass
diff --git a/erpnext/buying/doctype/supplier_quotation/supplier_quotation.py b/erpnext/buying/doctype/supplier_quotation/supplier_quotation.py
index 25e4e2a..af462fc 100644
--- a/erpnext/buying/doctype/supplier_quotation/supplier_quotation.py
+++ b/erpnext/buying/doctype/supplier_quotation/supplier_quotation.py
@@ -2,13 +2,14 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import flt, nowdate, add_days, getdate
 from frappe.model.mapper import get_mapped_doc
+from frappe.utils import flt, getdate, nowdate
 
-from erpnext.controllers.buying_controller import BuyingController
 from erpnext.buying.utils import validate_for_items
+from erpnext.controllers.buying_controller import BuyingController
 
 form_grid_templates = {
 	"items": "templates/form_grid/item_grid.html"
diff --git a/erpnext/buying/doctype/supplier_quotation/supplier_quotation_dashboard.py b/erpnext/buying/doctype/supplier_quotation/supplier_quotation_dashboard.py
index 6b40305..014b102 100644
--- a/erpnext/buying/doctype/supplier_quotation/supplier_quotation_dashboard.py
+++ b/erpnext/buying/doctype/supplier_quotation/supplier_quotation_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'supplier_quotation',
diff --git a/erpnext/buying/doctype/supplier_quotation/test_supplier_quotation.py b/erpnext/buying/doctype/supplier_quotation/test_supplier_quotation.py
index 6f34ca6..2db8e22 100644
--- a/erpnext/buying/doctype/supplier_quotation/test_supplier_quotation.py
+++ b/erpnext/buying/doctype/supplier_quotation/test_supplier_quotation.py
@@ -3,9 +3,11 @@
 
 
 from __future__ import unicode_literals
+
 import unittest
+
 import frappe
-import frappe.defaults
+
 
 class TestPurchaseOrder(unittest.TestCase):
 	def test_make_purchase_order(self):
diff --git a/erpnext/buying/doctype/supplier_quotation_item/supplier_quotation_item.py b/erpnext/buying/doctype/supplier_quotation_item/supplier_quotation_item.py
index 64dda87..03adab5 100644
--- a/erpnext/buying/doctype/supplier_quotation_item/supplier_quotation_item.py
+++ b/erpnext/buying/doctype/supplier_quotation_item/supplier_quotation_item.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class SupplierQuotationItem(Document):
 	pass
diff --git a/erpnext/buying/doctype/supplier_scorecard/supplier_scorecard.py b/erpnext/buying/doctype/supplier_scorecard/supplier_scorecard.py
index e956afd..f944fe4 100644
--- a/erpnext/buying/doctype/supplier_scorecard/supplier_scorecard.py
+++ b/erpnext/buying/doctype/supplier_scorecard/supplier_scorecard.py
@@ -3,13 +3,19 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe import throw, _
-from frappe.model.document import Document
+
 import time
 from datetime import timedelta
-from frappe.utils import nowdate, get_last_day, getdate, add_days, add_years
-from erpnext.buying.doctype.supplier_scorecard_period.supplier_scorecard_period import make_supplier_scorecard
+
+import frappe
+from frappe import _, throw
+from frappe.model.document import Document
+from frappe.utils import add_days, add_years, get_last_day, getdate, nowdate
+
+from erpnext.buying.doctype.supplier_scorecard_period.supplier_scorecard_period import (
+	make_supplier_scorecard,
+)
+
 
 class SupplierScorecard(Document):
 
diff --git a/erpnext/buying/doctype/supplier_scorecard/supplier_scorecard_dashboard.py b/erpnext/buying/doctype/supplier_scorecard/supplier_scorecard_dashboard.py
index 8e5cce5..7186e01 100644
--- a/erpnext/buying/doctype/supplier_scorecard/supplier_scorecard_dashboard.py
+++ b/erpnext/buying/doctype/supplier_scorecard/supplier_scorecard_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'heatmap': True,
diff --git a/erpnext/buying/doctype/supplier_scorecard/test_supplier_scorecard.py b/erpnext/buying/doctype/supplier_scorecard/test_supplier_scorecard.py
index a5f05ea..ef7fae3 100644
--- a/erpnext/buying/doctype/supplier_scorecard/test_supplier_scorecard.py
+++ b/erpnext/buying/doctype/supplier_scorecard/test_supplier_scorecard.py
@@ -3,9 +3,11 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
+
 class TestSupplierScorecard(unittest.TestCase):
 
 	def test_create_scorecard(self):
diff --git a/erpnext/buying/doctype/supplier_scorecard_criteria/supplier_scorecard_criteria.py b/erpnext/buying/doctype/supplier_scorecard_criteria/supplier_scorecard_criteria.py
index 33a0dc7..c456377 100644
--- a/erpnext/buying/doctype/supplier_scorecard_criteria/supplier_scorecard_criteria.py
+++ b/erpnext/buying/doctype/supplier_scorecard_criteria/supplier_scorecard_criteria.py
@@ -3,11 +3,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
+import re
+
 import frappe
 from frappe import _
-import re
 from frappe.model.document import Document
 
+
 class InvalidFormulaVariable(frappe.ValidationError): pass
 
 class SupplierScorecardCriteria(Document):
diff --git a/erpnext/buying/doctype/supplier_scorecard_criteria/test_supplier_scorecard_criteria.py b/erpnext/buying/doctype/supplier_scorecard_criteria/test_supplier_scorecard_criteria.py
index 3babfc8..9fca9a9 100644
--- a/erpnext/buying/doctype/supplier_scorecard_criteria/test_supplier_scorecard_criteria.py
+++ b/erpnext/buying/doctype/supplier_scorecard_criteria/test_supplier_scorecard_criteria.py
@@ -3,9 +3,11 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
+
 class TestSupplierScorecardCriteria(unittest.TestCase):
 	def test_variables_exist(self):
 		delete_test_scorecards()
diff --git a/erpnext/buying/doctype/supplier_scorecard_period/supplier_scorecard_period.py b/erpnext/buying/doctype/supplier_scorecard_period/supplier_scorecard_period.py
index cc345e9..b03d216 100644
--- a/erpnext/buying/doctype/supplier_scorecard_period/supplier_scorecard_period.py
+++ b/erpnext/buying/doctype/supplier_scorecard_period/supplier_scorecard_period.py
@@ -3,12 +3,17 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe import throw, _
+from frappe import _, throw
 from frappe.model.document import Document
 from frappe.model.mapper import get_mapped_doc
+
 import erpnext.buying.doctype.supplier_scorecard_variable.supplier_scorecard_variable as variable_functions
-from erpnext.buying.doctype.supplier_scorecard_criteria.supplier_scorecard_criteria import get_variables
+from erpnext.buying.doctype.supplier_scorecard_criteria.supplier_scorecard_criteria import (
+	get_variables,
+)
+
 
 class SupplierScorecardPeriod(Document):
 
diff --git a/erpnext/buying/doctype/supplier_scorecard_period/test_supplier_scorecard_period.py b/erpnext/buying/doctype/supplier_scorecard_period/test_supplier_scorecard_period.py
index 8baa318..de8bc0a 100644
--- a/erpnext/buying/doctype/supplier_scorecard_period/test_supplier_scorecard_period.py
+++ b/erpnext/buying/doctype/supplier_scorecard_period/test_supplier_scorecard_period.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestSupplierScorecardPeriod(unittest.TestCase):
 	pass
diff --git a/erpnext/buying/doctype/supplier_scorecard_scoring_criteria/supplier_scorecard_scoring_criteria.py b/erpnext/buying/doctype/supplier_scorecard_scoring_criteria/supplier_scorecard_scoring_criteria.py
index b64abed..79d5082 100644
--- a/erpnext/buying/doctype/supplier_scorecard_scoring_criteria/supplier_scorecard_scoring_criteria.py
+++ b/erpnext/buying/doctype/supplier_scorecard_scoring_criteria/supplier_scorecard_scoring_criteria.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class SupplierScorecardScoringCriteria(Document):
 	pass
diff --git a/erpnext/buying/doctype/supplier_scorecard_scoring_standing/supplier_scorecard_scoring_standing.py b/erpnext/buying/doctype/supplier_scorecard_scoring_standing/supplier_scorecard_scoring_standing.py
index e8ad79f..5063b20 100644
--- a/erpnext/buying/doctype/supplier_scorecard_scoring_standing/supplier_scorecard_scoring_standing.py
+++ b/erpnext/buying/doctype/supplier_scorecard_scoring_standing/supplier_scorecard_scoring_standing.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class SupplierScorecardScoringStanding(Document):
 	pass
diff --git a/erpnext/buying/doctype/supplier_scorecard_scoring_variable/supplier_scorecard_scoring_variable.py b/erpnext/buying/doctype/supplier_scorecard_scoring_variable/supplier_scorecard_scoring_variable.py
index 58a8a99..476cb35 100644
--- a/erpnext/buying/doctype/supplier_scorecard_scoring_variable/supplier_scorecard_scoring_variable.py
+++ b/erpnext/buying/doctype/supplier_scorecard_scoring_variable/supplier_scorecard_scoring_variable.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class SupplierScorecardScoringVariable(Document):
 	pass
diff --git a/erpnext/buying/doctype/supplier_scorecard_standing/supplier_scorecard_standing.py b/erpnext/buying/doctype/supplier_scorecard_standing/supplier_scorecard_standing.py
index 678855a..4fc45e8 100644
--- a/erpnext/buying/doctype/supplier_scorecard_standing/supplier_scorecard_standing.py
+++ b/erpnext/buying/doctype/supplier_scorecard_standing/supplier_scorecard_standing.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 
+
 class SupplierScorecardStanding(Document):
 	pass
 
diff --git a/erpnext/buying/doctype/supplier_scorecard_standing/test_supplier_scorecard_standing.py b/erpnext/buying/doctype/supplier_scorecard_standing/test_supplier_scorecard_standing.py
index 4d96651..5ac5927 100644
--- a/erpnext/buying/doctype/supplier_scorecard_standing/test_supplier_scorecard_standing.py
+++ b/erpnext/buying/doctype/supplier_scorecard_standing/test_supplier_scorecard_standing.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestSupplierScorecardStanding(unittest.TestCase):
 	pass
diff --git a/erpnext/buying/doctype/supplier_scorecard_variable/supplier_scorecard_variable.py b/erpnext/buying/doctype/supplier_scorecard_variable/supplier_scorecard_variable.py
index 89a6459..30b2a18 100644
--- a/erpnext/buying/doctype/supplier_scorecard_variable/supplier_scorecard_variable.py
+++ b/erpnext/buying/doctype/supplier_scorecard_variable/supplier_scorecard_variable.py
@@ -3,12 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import sys
+
+import frappe
 from frappe import _
 from frappe.model.document import Document
 from frappe.utils import getdate
 
+
 class VariablePathNotFound(frappe.ValidationError): pass
 
 class SupplierScorecardVariable(Document):
@@ -18,7 +21,9 @@
 	def validate_path_exists(self):
 		if '.' in self.path:
 			try:
-				from erpnext.buying.doctype.supplier_scorecard_period.supplier_scorecard_period import import_string_path
+				from erpnext.buying.doctype.supplier_scorecard_period.supplier_scorecard_period import (
+					import_string_path,
+				)
 				import_string_path(self.path)
 			except AttributeError:
 				frappe.throw(_("Could not find path for " + self.path), VariablePathNotFound)
diff --git a/erpnext/buying/doctype/supplier_scorecard_variable/test_supplier_scorecard_variable.py b/erpnext/buying/doctype/supplier_scorecard_variable/test_supplier_scorecard_variable.py
index 14b8710..990413c 100644
--- a/erpnext/buying/doctype/supplier_scorecard_variable/test_supplier_scorecard_variable.py
+++ b/erpnext/buying/doctype/supplier_scorecard_variable/test_supplier_scorecard_variable.py
@@ -3,10 +3,13 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
-from erpnext.buying.doctype.supplier_scorecard_variable.supplier_scorecard_variable import VariablePathNotFound
+import frappe
+
+from erpnext.buying.doctype.supplier_scorecard_variable.supplier_scorecard_variable import (
+	VariablePathNotFound,
+)
 
 
 class TestSupplierScorecardVariable(unittest.TestCase):
diff --git a/erpnext/buying/report/procurement_tracker/procurement_tracker.py b/erpnext/buying/report/procurement_tracker/procurement_tracker.py
index 99bcbe6..cb99234 100644
--- a/erpnext/buying/report/procurement_tracker/procurement_tracker.py
+++ b/erpnext/buying/report/procurement_tracker/procurement_tracker.py
@@ -2,10 +2,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import flt
 
+
 def execute(filters=None):
 	columns = get_columns(filters)
 	data = get_data(filters)
diff --git a/erpnext/buying/report/procurement_tracker/test_procurement_tracker.py b/erpnext/buying/report/procurement_tracker/test_procurement_tracker.py
index c36083f..a5b0947 100644
--- a/erpnext/buying/report/procurement_tracker/test_procurement_tracker.py
+++ b/erpnext/buying/report/procurement_tracker/test_procurement_tracker.py
@@ -2,15 +2,19 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import unittest
 from datetime import datetime
+
 import frappe
-from erpnext.buying.report.procurement_tracker.procurement_tracker import execute
-from erpnext.stock.doctype.material_request.test_material_request import make_material_request
-from erpnext.stock.doctype.material_request.material_request import make_purchase_order
+
 from erpnext.buying.doctype.purchase_order.purchase_order import make_purchase_receipt
+from erpnext.buying.report.procurement_tracker.procurement_tracker import execute
+from erpnext.stock.doctype.material_request.material_request import make_purchase_order
+from erpnext.stock.doctype.material_request.test_material_request import make_material_request
 from erpnext.stock.doctype.warehouse.test_warehouse import create_warehouse
 
+
 class TestProcurementTracker(unittest.TestCase):
 	def test_result_for_procurement_tracker(self):
 		filters = {
diff --git a/erpnext/buying/report/purchase_analytics/purchase_analytics.py b/erpnext/buying/report/purchase_analytics/purchase_analytics.py
index 0f94947..bef66da 100644
--- a/erpnext/buying/report/purchase_analytics/purchase_analytics.py
+++ b/erpnext/buying/report/purchase_analytics/purchase_analytics.py
@@ -2,7 +2,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from erpnext.selling.report.sales_analytics.sales_analytics import Analytics
 
+
 def execute(filters=None):
 	return Analytics(filters).run()
diff --git a/erpnext/buying/report/purchase_order_analysis/purchase_order_analysis.py b/erpnext/buying/report/purchase_order_analysis/purchase_order_analysis.py
index bda1727..5d59456 100644
--- a/erpnext/buying/report/purchase_order_analysis/purchase_order_analysis.py
+++ b/erpnext/buying/report/purchase_order_analysis/purchase_order_analysis.py
@@ -2,10 +2,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import copy
+
+import frappe
 from frappe import _
-from frappe.utils import flt, date_diff, getdate
+from frappe.utils import date_diff, flt, getdate
+
 
 def execute(filters=None):
 	if not filters:
diff --git a/erpnext/buying/report/purchase_order_trends/purchase_order_trends.py b/erpnext/buying/report/purchase_order_trends/purchase_order_trends.py
index 095a443..9781480 100644
--- a/erpnext/buying/report/purchase_order_trends/purchase_order_trends.py
+++ b/erpnext/buying/report/purchase_order_trends/purchase_order_trends.py
@@ -2,9 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe import _
-from erpnext.controllers.trends	import get_columns,get_data
+
+from erpnext.controllers.trends import get_columns, get_data
+
 
 def execute(filters=None):
 	if not filters: filters ={}
diff --git a/erpnext/buying/report/requested_items_to_order_and_receive/requested_items_to_order_and_receive.py b/erpnext/buying/report/requested_items_to_order_and_receive/requested_items_to_order_and_receive.py
index faf67c9..42cc6eb 100644
--- a/erpnext/buying/report/requested_items_to_order_and_receive/requested_items_to_order_and_receive.py
+++ b/erpnext/buying/report/requested_items_to_order_and_receive/requested_items_to_order_and_receive.py
@@ -2,10 +2,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import copy
+
+import frappe
 from frappe import _
-from frappe.utils import flt, date_diff, getdate
+from frappe.utils import date_diff, flt, getdate
+
 
 def execute(filters=None):
 	if not filters:
diff --git a/erpnext/buying/report/subcontract_order_summary/subcontract_order_summary.py b/erpnext/buying/report/subcontract_order_summary/subcontract_order_summary.py
index 9a45972..202d364 100644
--- a/erpnext/buying/report/subcontract_order_summary/subcontract_order_summary.py
+++ b/erpnext/buying/report/subcontract_order_summary/subcontract_order_summary.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 def execute(filters=None):
 	columns, data = [], []
 	columns = get_columns()
diff --git a/erpnext/buying/report/subcontracted_item_to_be_received/subcontracted_item_to_be_received.py b/erpnext/buying/report/subcontracted_item_to_be_received/subcontracted_item_to_be_received.py
index 2da53d7..9299cca 100644
--- a/erpnext/buying/report/subcontracted_item_to_be_received/subcontracted_item_to_be_received.py
+++ b/erpnext/buying/report/subcontracted_item_to_be_received/subcontracted_item_to_be_received.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 def execute(filters=None):
 	if filters.from_date >= filters.to_date:
 		frappe.msgprint(_("To Date must be greater than From Date"))
diff --git a/erpnext/buying/report/subcontracted_item_to_be_received/test_subcontracted_item_to_be_received.py b/erpnext/buying/report/subcontracted_item_to_be_received/test_subcontracted_item_to_be_received.py
index cb304a1..7aeae45 100644
--- a/erpnext/buying/report/subcontracted_item_to_be_received/test_subcontracted_item_to_be_received.py
+++ b/erpnext/buying/report/subcontracted_item_to_be_received/test_subcontracted_item_to_be_received.py
@@ -3,12 +3,18 @@
 # Compiled at: 2019-05-06 09:51:46
 # Decompiled by https://python-decompiler.com
 from __future__ import unicode_literals
-from erpnext.buying.doctype.purchase_order.test_purchase_order import create_purchase_order
+
+import unittest
+
+import frappe
+
 from erpnext.buying.doctype.purchase_order.purchase_order import make_purchase_receipt
+from erpnext.buying.doctype.purchase_order.test_purchase_order import create_purchase_order
+from erpnext.buying.report.subcontracted_item_to_be_received.subcontracted_item_to_be_received import (
+	execute,
+)
 from erpnext.stock.doctype.stock_entry.test_stock_entry import make_stock_entry
-from erpnext.buying.report.subcontracted_item_to_be_received.subcontracted_item_to_be_received import execute
-import frappe, unittest
-from pprint import pprint
+
 
 class TestSubcontractedItemToBeReceived(unittest.TestCase):
 
diff --git a/erpnext/buying/report/subcontracted_raw_materials_to_be_transferred/subcontracted_raw_materials_to_be_transferred.py b/erpnext/buying/report/subcontracted_raw_materials_to_be_transferred/subcontracted_raw_materials_to_be_transferred.py
index 96cacb6..a8fad96 100644
--- a/erpnext/buying/report/subcontracted_raw_materials_to_be_transferred/subcontracted_raw_materials_to_be_transferred.py
+++ b/erpnext/buying/report/subcontracted_raw_materials_to_be_transferred/subcontracted_raw_materials_to_be_transferred.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 def execute(filters=None):
 	if filters.from_date >= filters.to_date:
 		frappe.msgprint(_("To Date must be greater than From Date"))
diff --git a/erpnext/buying/report/subcontracted_raw_materials_to_be_transferred/test_subcontracted_raw_materials_to_be_transferred.py b/erpnext/buying/report/subcontracted_raw_materials_to_be_transferred/test_subcontracted_raw_materials_to_be_transferred.py
index 2448e17..dcdc5e3 100644
--- a/erpnext/buying/report/subcontracted_raw_materials_to_be_transferred/test_subcontracted_raw_materials_to_be_transferred.py
+++ b/erpnext/buying/report/subcontracted_raw_materials_to_be_transferred/test_subcontracted_raw_materials_to_be_transferred.py
@@ -3,11 +3,19 @@
 # Compiled at: 2019-05-06 10:24:35
 # Decompiled by https://python-decompiler.com
 from __future__ import unicode_literals
-from erpnext.buying.doctype.purchase_order.test_purchase_order import create_purchase_order
+
+import json
+import unittest
+
+import frappe
+
 from erpnext.buying.doctype.purchase_order.purchase_order import make_rm_stock_entry
+from erpnext.buying.doctype.purchase_order.test_purchase_order import create_purchase_order
+from erpnext.buying.report.subcontracted_raw_materials_to_be_transferred.subcontracted_raw_materials_to_be_transferred import (
+	execute,
+)
 from erpnext.stock.doctype.stock_entry.test_stock_entry import make_stock_entry
-from erpnext.buying.report.subcontracted_raw_materials_to_be_transferred.subcontracted_raw_materials_to_be_transferred import execute
-import json, frappe, unittest
+
 
 class TestSubcontractedItemToBeTransferred(unittest.TestCase):
 
diff --git a/erpnext/buying/report/supplier_quotation_comparison/supplier_quotation_comparison.py b/erpnext/buying/report/supplier_quotation_comparison/supplier_quotation_comparison.py
index a5a3105..62b83ed 100644
--- a/erpnext/buying/report/supplier_quotation_comparison/supplier_quotation_comparison.py
+++ b/erpnext/buying/report/supplier_quotation_comparison/supplier_quotation_comparison.py
@@ -2,12 +2,16 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe.utils import flt, cint
-from frappe import _
+
 from collections import defaultdict
+
+import frappe
+from frappe import _
+from frappe.utils import cint, flt
+
 from erpnext.setup.utils import get_exchange_rate
 
+
 def execute(filters=None):
 	if not filters:
 		return [], []
diff --git a/erpnext/buying/utils.py b/erpnext/buying/utils.py
index 1792863..81d995c 100644
--- a/erpnext/buying/utils.py
+++ b/erpnext/buying/utils.py
@@ -2,13 +2,15 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe.utils import flt, cstr, cint
-from frappe import _
+
 import json
 
-from erpnext.stock.doctype.item.item import get_last_purchase_details
-from erpnext.stock.doctype.item.item import validate_end_of_life
+import frappe
+from frappe import _
+from frappe.utils import cint, cstr, flt
+
+from erpnext.stock.doctype.item.item import get_last_purchase_details, validate_end_of_life
+
 
 def update_last_purchase_rate(doc, is_submit):
 	"""updates last_purchase_rate in item table for each item"""
diff --git a/erpnext/commands/__init__.py b/erpnext/commands/__init__.py
index 2276c73..f3bf11a 100644
--- a/erpnext/commands/__init__.py
+++ b/erpnext/commands/__init__.py
@@ -1,10 +1,12 @@
 # Copyright (c) 2015, Web Notes Technologies Pvt. Ltd. and Contributors
 # MIT License. See license.txt
 
-from __future__ import unicode_literals, absolute_import, print_function
+from __future__ import absolute_import, print_function, unicode_literals
+
 import click
 import frappe
-from frappe.commands import pass_context, get_site
+from frappe.commands import get_site, pass_context
+
 
 def call_command(cmd, context):
 	return click.Context(cmd, obj=context).forward(cmd)
diff --git a/erpnext/communication/doctype/communication_medium/communication_medium.py b/erpnext/communication/doctype/communication_medium/communication_medium.py
index f233da0..b15c3be 100644
--- a/erpnext/communication/doctype/communication_medium/communication_medium.py
+++ b/erpnext/communication/doctype/communication_medium/communication_medium.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class CommunicationMedium(Document):
 	pass
diff --git a/erpnext/communication/doctype/communication_medium_timeslot/communication_medium_timeslot.py b/erpnext/communication/doctype/communication_medium_timeslot/communication_medium_timeslot.py
index d68d2d6..5189b09 100644
--- a/erpnext/communication/doctype/communication_medium_timeslot/communication_medium_timeslot.py
+++ b/erpnext/communication/doctype/communication_medium_timeslot/communication_medium_timeslot.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class CommunicationMediumTimeslot(Document):
 	pass
diff --git a/erpnext/config/education.py b/erpnext/config/education.py
index 1c8ab10..ecd771f 100644
--- a/erpnext/config/education.py
+++ b/erpnext/config/education.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return [
 		{
diff --git a/erpnext/config/projects.py b/erpnext/config/projects.py
index ab4db96..d4d4a72 100644
--- a/erpnext/config/projects.py
+++ b/erpnext/config/projects.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return [
 		{
diff --git a/erpnext/controllers/accounts_controller.py b/erpnext/controllers/accounts_controller.py
index fc5dc09..b90db05 100644
--- a/erpnext/controllers/accounts_controller.py
+++ b/erpnext/controllers/accounts_controller.py
@@ -2,27 +2,60 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
+
 import json
+
+import frappe
 from frappe import _, throw
-from frappe.utils import (today, flt, cint, fmt_money, formatdate,
-	getdate, add_days, add_months, get_last_day, nowdate, get_link_to_form)
-from frappe.model.workflow import get_workflow_name, is_transition_condition_satisfied, WorkflowPermissionError
-from erpnext.stock.get_item_details import get_conversion_factor, get_item_details
-from erpnext.setup.utils import get_exchange_rate
-from erpnext.accounts.utils import get_fiscal_years, validate_fiscal_year, get_account_currency
-from erpnext.utilities.transaction_base import TransactionBase
-from erpnext.buying.utils import update_last_purchase_rate
-from erpnext.controllers.sales_and_purchase_return import validate_return
-from erpnext.accounts.party import get_party_account_currency, validate_party_frozen_disabled, get_party_account
-from erpnext.accounts.doctype.pricing_rule.utils import (apply_pricing_rule_on_transaction,
-	apply_pricing_rule_for_free_items, get_applied_pricing_rules)
-from erpnext.exceptions import InvalidCurrency
+from frappe.model.workflow import get_workflow_name, is_transition_condition_satisfied
+from frappe.utils import (
+	add_days,
+	add_months,
+	cint,
+	flt,
+	fmt_money,
+	formatdate,
+	get_last_day,
+	get_link_to_form,
+	getdate,
+	nowdate,
+	today,
+)
 from six import text_type
-from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import get_accounting_dimensions
-from erpnext.stock.get_item_details import get_item_warehouse, _get_item_tax_template, get_item_tax_map
+
+import erpnext
+from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import (
+	get_accounting_dimensions,
+)
+from erpnext.accounts.doctype.pricing_rule.utils import (
+	apply_pricing_rule_for_free_items,
+	apply_pricing_rule_on_transaction,
+	get_applied_pricing_rules,
+)
+from erpnext.accounts.party import (
+	get_party_account,
+	get_party_account_currency,
+	validate_party_frozen_disabled,
+)
+from erpnext.accounts.utils import get_account_currency, get_fiscal_years, validate_fiscal_year
+from erpnext.buying.utils import update_last_purchase_rate
+from erpnext.controllers.print_settings import (
+	set_print_templates_for_item_table,
+	set_print_templates_for_taxes,
+)
+from erpnext.controllers.sales_and_purchase_return import validate_return
+from erpnext.exceptions import InvalidCurrency
+from erpnext.setup.utils import get_exchange_rate
 from erpnext.stock.doctype.packed_item.packed_item import make_packing_list
-from erpnext.controllers.print_settings import set_print_templates_for_item_table, set_print_templates_for_taxes
+from erpnext.stock.get_item_details import (
+	_get_item_tax_template,
+	get_conversion_factor,
+	get_item_details,
+	get_item_tax_map,
+	get_item_warehouse,
+)
+from erpnext.utilities.transaction_base import TransactionBase
+
 
 class AccountMissingError(frappe.ValidationError): pass
 
@@ -1811,7 +1844,12 @@
 
 def update_bin_on_delete(row, doctype):
 	"""Update bin for deleted item (row)."""
-	from erpnext.stock.stock_balance import update_bin_qty, get_reserved_qty, get_ordered_qty, get_indented_qty
+	from erpnext.stock.stock_balance import (
+		get_indented_qty,
+		get_ordered_qty,
+		get_reserved_qty,
+		update_bin_qty,
+	)
 	qty_dict = {}
 
 	if doctype == "Sales Order":
diff --git a/erpnext/controllers/buying_controller.py b/erpnext/controllers/buying_controller.py
index 974ade3..e0b3ad8 100644
--- a/erpnext/controllers/buying_controller.py
+++ b/erpnext/controllers/buying_controller.py
@@ -2,24 +2,21 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _, msgprint
-from frappe.utils import flt,cint, cstr, getdate
-from six import iteritems
-from collections import OrderedDict
-from erpnext.accounts.party import get_party_details
-from erpnext.stock.get_item_details import get_conversion_factor
-from erpnext.buying.utils import validate_for_items, update_last_purchase_rate
-from erpnext.stock.stock_ledger import get_valuation_rate
-from erpnext.stock.doctype.serial_no.serial_no import get_auto_serial_nos, auto_make_serial_nos, get_serial_nos
 from frappe.contacts.doctype.address.address import get_address_display
+from frappe.utils import cint, cstr, flt, getdate
 
 from erpnext.accounts.doctype.budget.budget import validate_expense_against_budget
+from erpnext.accounts.party import get_party_details
+from erpnext.buying.utils import update_last_purchase_rate, validate_for_items
 from erpnext.controllers.sales_and_purchase_return import get_rate_for_return
-from erpnext.stock.utils import get_incoming_rate
-
 from erpnext.controllers.stock_controller import StockController
 from erpnext.controllers.subcontracting import Subcontracting
+from erpnext.stock.get_item_details import get_conversion_factor
+from erpnext.stock.utils import get_incoming_rate
+
 
 class BuyingController(StockController, Subcontracting):
 
diff --git a/erpnext/controllers/employee_boarding_controller.py b/erpnext/controllers/employee_boarding_controller.py
index f43c804..b8dc92e 100644
--- a/erpnext/controllers/employee_boarding_controller.py
+++ b/erpnext/controllers/employee_boarding_controller.py
@@ -5,9 +5,11 @@
 from frappe import _
 from frappe.desk.form import assign_to
 from frappe.model.document import Document
-from frappe.utils import flt, unique, add_days
-from erpnext.hr.doctype.holiday_list.holiday_list import is_holiday
+from frappe.utils import add_days, flt, unique
+
 from erpnext.hr.doctype.employee.employee import get_holiday_list_for_employee
+from erpnext.hr.doctype.holiday_list.holiday_list import is_holiday
+
 
 class EmployeeBoardingController(Document):
 	'''
diff --git a/erpnext/controllers/item_variant.py b/erpnext/controllers/item_variant.py
index 8c361a2..1b56ae9 100644
--- a/erpnext/controllers/item_variant.py
+++ b/erpnext/controllers/item_variant.py
@@ -2,13 +2,16 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
+import copy
+import json
+
 import frappe
 from frappe import _
 from frappe.utils import cstr, flt
-import json, copy
-
 from six import string_types
 
+
 class ItemVariantExistsError(frappe.ValidationError): pass
 class InvalidItemAttributeValueError(frappe.ValidationError): pass
 class ItemTemplateCannotHaveStock(frappe.ValidationError): pass
diff --git a/erpnext/controllers/print_settings.py b/erpnext/controllers/print_settings.py
index e08c400..f6e061b 100644
--- a/erpnext/controllers/print_settings.py
+++ b/erpnext/controllers/print_settings.py
@@ -2,8 +2,7 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe.utils import cint
+
 
 def set_print_templates_for_item_table(doc, settings):
 	doc.print_templates = {
diff --git a/erpnext/controllers/queries.py b/erpnext/controllers/queries.py
index 4b4c8be..aafaf5b 100644
--- a/erpnext/controllers/queries.py
+++ b/erpnext/controllers/queries.py
@@ -2,14 +2,17 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
-import erpnext
+
 import json
-from frappe.desk.reportview import get_match_cond, get_filters_cond
-from frappe.utils import nowdate, getdate
 from collections import defaultdict
+
+import frappe
+from frappe.desk.reportview import get_filters_cond, get_match_cond
+from frappe.utils import nowdate, unique
+
+import erpnext
 from erpnext.stock.get_item_details import _get_item_tax_template
-from frappe.utils import unique
+
 
 # searches for active employees
 @frappe.whitelist()
@@ -517,7 +520,9 @@
 @frappe.whitelist()
 @frappe.validate_and_sanitize_search_inputs
 def get_filtered_dimensions(doctype, txt, searchfield, start, page_len, filters):
-	from erpnext.accounts.doctype.accounting_dimension_filter.accounting_dimension_filter import get_dimension_filter_map
+	from erpnext.accounts.doctype.accounting_dimension_filter.accounting_dimension_filter import (
+		get_dimension_filter_map,
+	)
 	dimension_filters = get_dimension_filter_map()
 	dimension_filters = dimension_filters.get((filters.get('dimension'),filters.get('account')))
 	query_filters = []
@@ -692,7 +697,9 @@
 				company = frappe.db.escape(filters.get('company')), txt = frappe.db.escape('%{0}%'.format(txt)))
 
 	if filters and filters.get('inpatient_record'):
-		from erpnext.healthcare.doctype.inpatient_medication_entry.inpatient_medication_entry import get_current_healthcare_service_unit
+		from erpnext.healthcare.doctype.inpatient_medication_entry.inpatient_medication_entry import (
+			get_current_healthcare_service_unit,
+		)
 		service_unit = get_current_healthcare_service_unit(filters.get('inpatient_record'))
 
 		# if the patient is admitted, then appointments should be allowed against the admission service unit,
diff --git a/erpnext/controllers/sales_and_purchase_return.py b/erpnext/controllers/sales_and_purchase_return.py
index f673a9b..5f2fbeb 100644
--- a/erpnext/controllers/sales_and_purchase_return.py
+++ b/erpnext/controllers/sales_and_purchase_return.py
@@ -2,11 +2,15 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
+
+import frappe
 from frappe import _
 from frappe.model.meta import get_field_precision
+from frappe.utils import flt, format_datetime, get_datetime
+
+import erpnext
 from erpnext.stock.utils import get_incoming_rate
-from frappe.utils import flt, get_datetime, format_datetime
+
 
 class StockOverReturnError(frappe.ValidationError): pass
 
@@ -235,6 +239,7 @@
 
 def make_return_doc(doctype, source_name, target_doc=None):
 	from frappe.model.mapper import get_mapped_doc
+
 	from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
 	company = frappe.db.get_value("Delivery Note", source_name, "company")
 	default_warehouse_for_sales_return = frappe.db.get_value("Company", company, "default_warehouse_for_sales_return")
diff --git a/erpnext/controllers/selling_controller.py b/erpnext/controllers/selling_controller.py
index 844c40c..0158a11 100644
--- a/erpnext/controllers/selling_controller.py
+++ b/erpnext/controllers/selling_controller.py
@@ -2,18 +2,19 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe.utils import cint, flt, cstr, get_link_to_form, nowtime
-from frappe import _, bold, throw
-from erpnext.stock.get_item_details import get_bin_details
-from erpnext.stock.utils import get_incoming_rate
-from erpnext.stock.get_item_details import get_conversion_factor
-from erpnext.stock.doctype.item.item import set_item_default
-from frappe.contacts.doctype.address.address import get_address_display
-from erpnext.controllers.accounts_controller import get_taxes_and_charges
 
-from erpnext.controllers.stock_controller import StockController
+import frappe
+from frappe import _, bold, throw
+from frappe.contacts.doctype.address.address import get_address_display
+from frappe.utils import cint, cstr, flt, get_link_to_form, nowtime
+
+from erpnext.controllers.accounts_controller import get_taxes_and_charges
 from erpnext.controllers.sales_and_purchase_return import get_rate_for_return
+from erpnext.controllers.stock_controller import StockController
+from erpnext.stock.doctype.item.item import set_item_default
+from erpnext.stock.get_item_details import get_bin_details, get_conversion_factor
+from erpnext.stock.utils import get_incoming_rate
+
 
 class SellingController(StockController):
 	def get_feed(self):
diff --git a/erpnext/controllers/status_updater.py b/erpnext/controllers/status_updater.py
index 7b24e50..8738204 100644
--- a/erpnext/controllers/status_updater.py
+++ b/erpnext/controllers/status_updater.py
@@ -2,10 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import flt, comma_or, nowdate, getdate, now
 from frappe import _
 from frappe.model.document import Document
+from frappe.utils import comma_or, flt, getdate, now, nowdate
+
 
 class OverAllowanceError(frappe.ValidationError): pass
 
diff --git a/erpnext/controllers/stock_controller.py b/erpnext/controllers/stock_controller.py
index 17707ec..78a6e52 100644
--- a/erpnext/controllers/stock_controller.py
+++ b/erpnext/controllers/stock_controller.py
@@ -5,12 +5,15 @@
 from collections import defaultdict
 
 import frappe
-import frappe.defaults
 from frappe import _
 from frappe.utils import cint, cstr, flt, get_link_to_form, getdate
 
 import erpnext
-from erpnext.accounts.general_ledger import make_gl_entries, make_reverse_gl_entries, process_gl_map
+from erpnext.accounts.general_ledger import (
+	make_gl_entries,
+	make_reverse_gl_entries,
+	process_gl_map,
+)
 from erpnext.accounts.utils import get_fiscal_year
 from erpnext.controllers.accounts_controller import AccountsController
 from erpnext.stock import get_warehouse_account_map
diff --git a/erpnext/controllers/subcontracting.py b/erpnext/controllers/subcontracting.py
index 969829f..3addb91 100644
--- a/erpnext/controllers/subcontracting.py
+++ b/erpnext/controllers/subcontracting.py
@@ -1,10 +1,13 @@
-import frappe
 import copy
-from frappe import _
-from frappe.utils import flt, cint, get_link_to_form
 from collections import defaultdict
+
+import frappe
+from frappe import _
+from frappe.utils import cint, flt, get_link_to_form
+
 from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
 
+
 class Subcontracting():
 	def set_materials_for_subcontracted_items(self, raw_material_table):
 		if self.doctype == 'Purchase Invoice' and not self.update_stock:
diff --git a/erpnext/controllers/taxes_and_totals.py b/erpnext/controllers/taxes_and_totals.py
index 993c354..70cc8a5 100644
--- a/erpnext/controllers/taxes_and_totals.py
+++ b/erpnext/controllers/taxes_and_totals.py
@@ -2,15 +2,23 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import json
-import frappe, erpnext
+
+import frappe
 from frappe import _, scrub
 from frappe.utils import cint, flt, round_based_on_smallest_currency_fraction
-from erpnext.controllers.accounts_controller import validate_conversion_rate, \
-	validate_taxes_and_charges, validate_inclusive_tax
-from erpnext.stock.get_item_details import _get_item_tax_template
-from erpnext.accounts.doctype.pricing_rule.utils import get_applied_pricing_rules
+
+import erpnext
 from erpnext.accounts.doctype.journal_entry.journal_entry import get_exchange_rate
+from erpnext.accounts.doctype.pricing_rule.utils import get_applied_pricing_rules
+from erpnext.controllers.accounts_controller import (
+	validate_conversion_rate,
+	validate_inclusive_tax,
+	validate_taxes_and_charges,
+)
+from erpnext.stock.get_item_details import _get_item_tax_template
+
 
 class calculate_taxes_and_totals(object):
 	def __init__(self, doc):
diff --git a/erpnext/controllers/tests/test_item_variant.py b/erpnext/controllers/tests/test_item_variant.py
index 813f0a0..b3633e6 100644
--- a/erpnext/controllers/tests/test_item_variant.py
+++ b/erpnext/controllers/tests/test_item_variant.py
@@ -1,15 +1,18 @@
 from __future__ import unicode_literals
 
-import frappe
 import json
 import unittest
 
-from erpnext.stock.doctype.item.test_item import set_item_variant_settings
-from erpnext.controllers.item_variant import copy_attributes_to_variant, make_variant_item_code
-from erpnext.stock.doctype.quality_inspection.test_quality_inspection import create_quality_inspection_parameter
-
+import frappe
 from six import string_types
 
+from erpnext.controllers.item_variant import copy_attributes_to_variant, make_variant_item_code
+from erpnext.stock.doctype.item.test_item import set_item_variant_settings
+from erpnext.stock.doctype.quality_inspection.test_quality_inspection import (
+	create_quality_inspection_parameter,
+)
+
+
 class TestItemVariant(unittest.TestCase):
 	def test_tables_in_template_copied_to_variant(self):
 		fields = [{'field_name': 'quality_inspection_template'}]
diff --git a/erpnext/controllers/tests/test_mapper.py b/erpnext/controllers/tests/test_mapper.py
index 7a4b2d3..2d1ae43 100644
--- a/erpnext/controllers/tests/test_mapper.py
+++ b/erpnext/controllers/tests/test_mapper.py
@@ -1,12 +1,14 @@
 from __future__ import unicode_literals
-import unittest
-import frappe
 
-import random, json
+import json
+import unittest
+
+import frappe
 import frappe.utils
-from frappe.utils import nowdate, add_months
 from frappe.model import mapper
 from frappe.test_runner import make_test_records
+from frappe.utils import add_months, nowdate
+
 
 class TestMapper(unittest.TestCase):
 	def test_map_docs(self):
diff --git a/erpnext/controllers/tests/test_qty_based_taxes.py b/erpnext/controllers/tests/test_qty_based_taxes.py
index aaeac5d..41673d1 100644
--- a/erpnext/controllers/tests/test_qty_based_taxes.py
+++ b/erpnext/controllers/tests/test_qty_based_taxes.py
@@ -1,8 +1,11 @@
-from __future__ import unicode_literals, print_function
+from __future__ import print_function, unicode_literals
+
 import unittest
-import frappe
 from uuid import uuid4 as _uuid4
 
+import frappe
+
+
 def uuid4():
     return str(_uuid4())
 
diff --git a/erpnext/controllers/trends.py b/erpnext/controllers/trends.py
index 9b4b0eb..05d900d 100644
--- a/erpnext/controllers/trends.py
+++ b/erpnext/controllers/trends.py
@@ -2,9 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import getdate
 from frappe import _
+from frappe.utils import getdate
+
 
 def get_columns(filters, trans):
 	validate_filters(filters)
diff --git a/erpnext/controllers/website_list_for_contact.py b/erpnext/controllers/website_list_for_contact.py
index 7c072e4..ff2ed45 100644
--- a/erpnext/controllers/website_list_for_contact.py
+++ b/erpnext/controllers/website_list_for_contact.py
@@ -2,12 +2,15 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import json
+
 import frappe
 from frappe import _
 from frappe.utils import flt, has_common
 from frappe.utils.user import is_website_user
 
+
 def get_list_context(context=None):
 	return {
 		"global_number_format": frappe.db.get_default("number_format") or "#,###.##",
diff --git a/erpnext/crm/doctype/appointment/appointment.py b/erpnext/crm/doctype/appointment/appointment.py
index f7c6b6c..f205534 100644
--- a/erpnext/crm/doctype/appointment/appointment.py
+++ b/erpnext/crm/doctype/appointment/appointment.py
@@ -4,15 +4,13 @@
 
 from __future__ import unicode_literals
 
-import urllib
 from collections import Counter
-from datetime import timedelta
 
 import frappe
 from frappe import _
 from frappe.model.document import Document
 from frappe.utils import get_url, getdate
-from frappe.utils.verified_command import verify_request, get_signed_params
+from frappe.utils.verified_command import get_signed_params
 
 
 class Appointment(Document):
diff --git a/erpnext/crm/doctype/appointment/test_appointment.py b/erpnext/crm/doctype/appointment/test_appointment.py
index c7563e9..59138a9 100644
--- a/erpnext/crm/doctype/appointment/test_appointment.py
+++ b/erpnext/crm/doctype/appointment/test_appointment.py
@@ -3,9 +3,10 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
-import unittest
 import datetime
+import unittest
+
+import frappe
 
 
 def create_test_lead():
diff --git a/erpnext/crm/doctype/appointment_booking_settings/appointment_booking_settings.py b/erpnext/crm/doctype/appointment_booking_settings/appointment_booking_settings.py
index ad781d6..7e1da67 100644
--- a/erpnext/crm/doctype/appointment_booking_settings/appointment_booking_settings.py
+++ b/erpnext/crm/doctype/appointment_booking_settings/appointment_booking_settings.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
+import datetime
+
 import frappe
 from frappe import _
-import datetime
 from frappe.model.document import Document
 
 
diff --git a/erpnext/crm/doctype/appointment_booking_settings/test_appointment_booking_settings.py b/erpnext/crm/doctype/appointment_booking_settings/test_appointment_booking_settings.py
index 3dc3c39..5c5432c 100644
--- a/erpnext/crm/doctype/appointment_booking_settings/test_appointment_booking_settings.py
+++ b/erpnext/crm/doctype/appointment_booking_settings/test_appointment_booking_settings.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestAppointmentBookingSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/crm/doctype/appointment_booking_slots/appointment_booking_slots.py b/erpnext/crm/doctype/appointment_booking_slots/appointment_booking_slots.py
index 3cadbc9..4741c8a 100644
--- a/erpnext/crm/doctype/appointment_booking_slots/appointment_booking_slots.py
+++ b/erpnext/crm/doctype/appointment_booking_slots/appointment_booking_slots.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class AppointmentBookingSlots(Document):
 	pass
diff --git a/erpnext/crm/doctype/availability_of_slots/availability_of_slots.py b/erpnext/crm/doctype/availability_of_slots/availability_of_slots.py
index 8258471..e33d87b 100644
--- a/erpnext/crm/doctype/availability_of_slots/availability_of_slots.py
+++ b/erpnext/crm/doctype/availability_of_slots/availability_of_slots.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class AvailabilityOfSlots(Document):
 	pass
diff --git a/erpnext/crm/doctype/campaign/campaign.py b/erpnext/crm/doctype/campaign/campaign.py
index e32799f..8b62800 100644
--- a/erpnext/crm/doctype/campaign/campaign.py
+++ b/erpnext/crm/doctype/campaign/campaign.py
@@ -5,6 +5,7 @@
 from frappe.model.document import Document
 from frappe.model.naming import set_name_by_naming_series
 
+
 class Campaign(Document):
 	def autoname(self):
 		if frappe.defaults.get_global_default('campaign_naming_by') != 'Naming Series':
diff --git a/erpnext/crm/doctype/campaign/test_campaign.py b/erpnext/crm/doctype/campaign/test_campaign.py
index 7124b8c..2e25eb6 100644
--- a/erpnext/crm/doctype/campaign/test_campaign.py
+++ b/erpnext/crm/doctype/campaign/test_campaign.py
@@ -4,5 +4,6 @@
 # import frappe
 import unittest
 
+
 class TestCampaign(unittest.TestCase):
 	pass
diff --git a/erpnext/crm/doctype/campaign_email_schedule/campaign_email_schedule.py b/erpnext/crm/doctype/campaign_email_schedule/campaign_email_schedule.py
index 8445b8a..f053e6e 100644
--- a/erpnext/crm/doctype/campaign_email_schedule/campaign_email_schedule.py
+++ b/erpnext/crm/doctype/campaign_email_schedule/campaign_email_schedule.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class CampaignEmailSchedule(Document):
 	pass
diff --git a/erpnext/crm/doctype/contract/contract.py b/erpnext/crm/doctype/contract/contract.py
index c39397b..9654613 100644
--- a/erpnext/crm/doctype/contract/contract.py
+++ b/erpnext/crm/doctype/contract/contract.py
@@ -7,7 +7,7 @@
 import frappe
 from frappe import _
 from frappe.model.document import Document
-from frappe.utils import getdate, now_datetime, nowdate
+from frappe.utils import getdate, nowdate
 
 
 class Contract(Document):
diff --git a/erpnext/crm/doctype/contract/test_contract.py b/erpnext/crm/doctype/contract/test_contract.py
index d5f4e71..8771636 100644
--- a/erpnext/crm/doctype/contract/test_contract.py
+++ b/erpnext/crm/doctype/contract/test_contract.py
@@ -8,6 +8,7 @@
 import frappe
 from frappe.utils import add_days, nowdate
 
+
 class TestContract(unittest.TestCase):
 
 	def setUp(self):
diff --git a/erpnext/crm/doctype/contract_fulfilment_checklist/contract_fulfilment_checklist.py b/erpnext/crm/doctype/contract_fulfilment_checklist/contract_fulfilment_checklist.py
index 6039035..ae56f93 100644
--- a/erpnext/crm/doctype/contract_fulfilment_checklist/contract_fulfilment_checklist.py
+++ b/erpnext/crm/doctype/contract_fulfilment_checklist/contract_fulfilment_checklist.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ContractFulfilmentChecklist(Document):
 	pass
diff --git a/erpnext/crm/doctype/contract_fulfilment_checklist/test_contract_fulfilment_checklist.py b/erpnext/crm/doctype/contract_fulfilment_checklist/test_contract_fulfilment_checklist.py
index c78796b..82e7ad3 100644
--- a/erpnext/crm/doctype/contract_fulfilment_checklist/test_contract_fulfilment_checklist.py
+++ b/erpnext/crm/doctype/contract_fulfilment_checklist/test_contract_fulfilment_checklist.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestContractFulfilmentChecklist(unittest.TestCase):
 	pass
diff --git a/erpnext/crm/doctype/contract_template/contract_template.py b/erpnext/crm/doctype/contract_template/contract_template.py
index 9281220..fc1845c 100644
--- a/erpnext/crm/doctype/contract_template/contract_template.py
+++ b/erpnext/crm/doctype/contract_template/contract_template.py
@@ -3,11 +3,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
+import json
+
 import frappe
 from frappe.model.document import Document
 from frappe.utils.jinja import validate_template
 from six import string_types
-import json
+
 
 class ContractTemplate(Document):
 	def validate(self):
diff --git a/erpnext/crm/doctype/contract_template/test_contract_template.py b/erpnext/crm/doctype/contract_template/test_contract_template.py
index b2b0db6..5065505 100644
--- a/erpnext/crm/doctype/contract_template/test_contract_template.py
+++ b/erpnext/crm/doctype/contract_template/test_contract_template.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestContractTemplate(unittest.TestCase):
 	pass
diff --git a/erpnext/crm/doctype/contract_template_fulfilment_terms/contract_template_fulfilment_terms.py b/erpnext/crm/doctype/contract_template_fulfilment_terms/contract_template_fulfilment_terms.py
index 767b190..28f844d 100644
--- a/erpnext/crm/doctype/contract_template_fulfilment_terms/contract_template_fulfilment_terms.py
+++ b/erpnext/crm/doctype/contract_template_fulfilment_terms/contract_template_fulfilment_terms.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ContractTemplateFulfilmentTerms(Document):
 	pass
diff --git a/erpnext/crm/doctype/email_campaign/email_campaign.py b/erpnext/crm/doctype/email_campaign/email_campaign.py
index 71c93e8..4b74f25 100644
--- a/erpnext/crm/doctype/email_campaign/email_campaign.py
+++ b/erpnext/crm/doctype/email_campaign/email_campaign.py
@@ -3,11 +3,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import getdate, add_days, today, nowdate, cstr
-from frappe.model.document import Document
 from frappe.core.doctype.communication.email import make
+from frappe.model.document import Document
+from frappe.utils import add_days, getdate, today
+
 
 class EmailCampaign(Document):
 	def validate(self):
diff --git a/erpnext/crm/doctype/email_campaign/test_email_campaign.py b/erpnext/crm/doctype/email_campaign/test_email_campaign.py
index f5eab48..f68b8c6 100644
--- a/erpnext/crm/doctype/email_campaign/test_email_campaign.py
+++ b/erpnext/crm/doctype/email_campaign/test_email_campaign.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestEmailCampaign(unittest.TestCase):
 	pass
diff --git a/erpnext/crm/doctype/lead/lead.py b/erpnext/crm/doctype/lead/lead.py
index 7610a24..5cf110f 100644
--- a/erpnext/crm/doctype/lead/lead.py
+++ b/erpnext/crm/doctype/lead/lead.py
@@ -4,13 +4,23 @@
 from __future__ import unicode_literals
 
 import frappe
-from erpnext.accounts.party import set_taxes
-from erpnext.controllers.selling_controller import SellingController
 from frappe import _
 from frappe.contacts.address_and_contact import load_address_and_contact
 from frappe.email.inbox import link_communication_to_document
 from frappe.model.mapper import get_mapped_doc
-from frappe.utils import cint, comma_and, cstr, getdate, has_gravatar, nowdate, validate_email_address
+from frappe.utils import (
+	cint,
+	comma_and,
+	cstr,
+	getdate,
+	has_gravatar,
+	nowdate,
+	validate_email_address,
+)
+
+from erpnext.accounts.party import set_taxes
+from erpnext.controllers.selling_controller import SellingController
+
 
 class Lead(SellingController):
 	def get_feed(self):
diff --git a/erpnext/crm/doctype/lead/lead_dashboard.py b/erpnext/crm/doctype/lead/lead_dashboard.py
index 50e88a5..5edf2b6 100644
--- a/erpnext/crm/doctype/lead/lead_dashboard.py
+++ b/erpnext/crm/doctype/lead/lead_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
 	return {
diff --git a/erpnext/crm/doctype/lead/test_lead.py b/erpnext/crm/doctype/lead/test_lead.py
index d7bc461..833c43e 100644
--- a/erpnext/crm/doctype/lead/test_lead.py
+++ b/erpnext/crm/doctype/lead/test_lead.py
@@ -3,9 +3,10 @@
 
 from __future__ import unicode_literals
 
+import unittest
+
 import frappe
 from frappe.utils import random_string
-import unittest
 
 test_records = frappe.get_test_records('Lead')
 
diff --git a/erpnext/crm/doctype/lead_source/lead_source.py b/erpnext/crm/doctype/lead_source/lead_source.py
index 5c64fb8..8de1c43 100644
--- a/erpnext/crm/doctype/lead_source/lead_source.py
+++ b/erpnext/crm/doctype/lead_source/lead_source.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class LeadSource(Document):
 	pass
diff --git a/erpnext/crm/doctype/lead_source/test_lead_source.py b/erpnext/crm/doctype/lead_source/test_lead_source.py
index b5bc649..ecf6117 100644
--- a/erpnext/crm/doctype/lead_source/test_lead_source.py
+++ b/erpnext/crm/doctype/lead_source/test_lead_source.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestLeadSource(unittest.TestCase):
 	pass
diff --git a/erpnext/crm/doctype/linkedin_settings/linkedin_settings.py b/erpnext/crm/doctype/linkedin_settings/linkedin_settings.py
index c56eed8..03c9d9c 100644
--- a/erpnext/crm/doctype/linkedin_settings/linkedin_settings.py
+++ b/erpnext/crm/doctype/linkedin_settings/linkedin_settings.py
@@ -3,14 +3,16 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 import requests
 from frappe import _
-from frappe.utils import get_url_to_form
 from frappe.model.document import Document
+from frappe.utils import get_url_to_form
 from frappe.utils.file_manager import get_file_path
 from six.moves.urllib.parse import urlencode
 
+
 class LinkedInSettings(Document):
 	@frappe.whitelist()
 	def get_authorization_url(self):
diff --git a/erpnext/crm/doctype/linkedin_settings/test_linkedin_settings.py b/erpnext/crm/doctype/linkedin_settings/test_linkedin_settings.py
index 9c3ef3f..1d86f0c 100644
--- a/erpnext/crm/doctype/linkedin_settings/test_linkedin_settings.py
+++ b/erpnext/crm/doctype/linkedin_settings/test_linkedin_settings.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestLinkedInSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/crm/doctype/lost_reason_detail/lost_reason_detail.py b/erpnext/crm/doctype/lost_reason_detail/lost_reason_detail.py
index 3baa011..88abd42 100644
--- a/erpnext/crm/doctype/lost_reason_detail/lost_reason_detail.py
+++ b/erpnext/crm/doctype/lost_reason_detail/lost_reason_detail.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class LostReasonDetail(Document):
 	pass
diff --git a/erpnext/crm/doctype/market_segment/market_segment.py b/erpnext/crm/doctype/market_segment/market_segment.py
index 830ea69..92adf56 100644
--- a/erpnext/crm/doctype/market_segment/market_segment.py
+++ b/erpnext/crm/doctype/market_segment/market_segment.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class MarketSegment(Document):
 	pass
diff --git a/erpnext/crm/doctype/market_segment/test_market_segment.py b/erpnext/crm/doctype/market_segment/test_market_segment.py
index 2f9ed34..b95cc4c 100644
--- a/erpnext/crm/doctype/market_segment/test_market_segment.py
+++ b/erpnext/crm/doctype/market_segment/test_market_segment.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestMarketSegment(unittest.TestCase):
 	pass
diff --git a/erpnext/crm/doctype/opportunity/opportunity.py b/erpnext/crm/doctype/opportunity/opportunity.py
index a74a94a..0b3f508 100644
--- a/erpnext/crm/doctype/opportunity/opportunity.py
+++ b/erpnext/crm/doctype/opportunity/opportunity.py
@@ -2,14 +2,19 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, json
-from frappe.utils import cstr, cint, get_fullname
-from frappe import msgprint, _
+
+import json
+
+import frappe
+from frappe import _
+from frappe.email.inbox import link_communication_to_document
 from frappe.model.mapper import get_mapped_doc
+from frappe.utils import cint, cstr, get_fullname
+
+from erpnext.accounts.party import get_party_account_currency
 from erpnext.setup.utils import get_exchange_rate
 from erpnext.utilities.transaction_base import TransactionBase
-from erpnext.accounts.party import get_party_account_currency
-from frappe.email.inbox import link_communication_to_document
+
 
 class Opportunity(TransactionBase):
 	def after_insert(self):
diff --git a/erpnext/crm/doctype/opportunity/opportunity_dashboard.py b/erpnext/crm/doctype/opportunity/opportunity_dashboard.py
index b8c53f0..693a86c 100644
--- a/erpnext/crm/doctype/opportunity/opportunity_dashboard.py
+++ b/erpnext/crm/doctype/opportunity/opportunity_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
 	return {
diff --git a/erpnext/crm/doctype/opportunity/test_opportunity.py b/erpnext/crm/doctype/opportunity/test_opportunity.py
index 52aa0b0..347bf63 100644
--- a/erpnext/crm/doctype/opportunity/test_opportunity.py
+++ b/erpnext/crm/doctype/opportunity/test_opportunity.py
@@ -2,11 +2,13 @@
 # See license.txt
 from __future__ import unicode_literals
 
+import unittest
+
 import frappe
-from frappe.utils import today, random_string
+from frappe.utils import random_string, today
+
 from erpnext.crm.doctype.lead.lead import make_customer
 from erpnext.crm.doctype.opportunity.opportunity import make_quotation
-import unittest
 
 test_records = frappe.get_test_records('Opportunity')
 
diff --git a/erpnext/crm/doctype/opportunity_item/opportunity_item.py b/erpnext/crm/doctype/opportunity_item/opportunity_item.py
index 7a5ed63..225cfe9 100644
--- a/erpnext/crm/doctype/opportunity_item/opportunity_item.py
+++ b/erpnext/crm/doctype/opportunity_item/opportunity_item.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class OpportunityItem(Document):
 	pass
diff --git a/erpnext/crm/doctype/opportunity_lost_reason/opportunity_lost_reason.py b/erpnext/crm/doctype/opportunity_lost_reason/opportunity_lost_reason.py
index 48b63b0..b25f02a 100644
--- a/erpnext/crm/doctype/opportunity_lost_reason/opportunity_lost_reason.py
+++ b/erpnext/crm/doctype/opportunity_lost_reason/opportunity_lost_reason.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class OpportunityLostReason(Document):
 	pass
diff --git a/erpnext/crm/doctype/opportunity_lost_reason_detail/opportunity_lost_reason_detail.py b/erpnext/crm/doctype/opportunity_lost_reason_detail/opportunity_lost_reason_detail.py
index 8723f1d..4bb5c54 100644
--- a/erpnext/crm/doctype/opportunity_lost_reason_detail/opportunity_lost_reason_detail.py
+++ b/erpnext/crm/doctype/opportunity_lost_reason_detail/opportunity_lost_reason_detail.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class OpportunityLostReasonDetail(Document):
 	pass
diff --git a/erpnext/crm/doctype/opportunity_type/opportunity_type.py b/erpnext/crm/doctype/opportunity_type/opportunity_type.py
index 48abac3..5b64e980 100644
--- a/erpnext/crm/doctype/opportunity_type/opportunity_type.py
+++ b/erpnext/crm/doctype/opportunity_type/opportunity_type.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class OpportunityType(Document):
 	pass
diff --git a/erpnext/crm/doctype/opportunity_type/test_opportunity_type.py b/erpnext/crm/doctype/opportunity_type/test_opportunity_type.py
index 6410bbc..f86a70e 100644
--- a/erpnext/crm/doctype/opportunity_type/test_opportunity_type.py
+++ b/erpnext/crm/doctype/opportunity_type/test_opportunity_type.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestOpportunityType(unittest.TestCase):
 	pass
diff --git a/erpnext/crm/doctype/prospect/prospect.py b/erpnext/crm/doctype/prospect/prospect.py
index 3fa6fe8..367aa3d 100644
--- a/erpnext/crm/doctype/prospect/prospect.py
+++ b/erpnext/crm/doctype/prospect/prospect.py
@@ -2,9 +2,10 @@
 # For license information, please see license.txt
 
 import frappe
+from frappe.contacts.address_and_contact import load_address_and_contact
 from frappe.model.document import Document
 from frappe.model.mapper import get_mapped_doc
-from frappe.contacts.address_and_contact import load_address_and_contact
+
 
 class Prospect(Document):
 	def onload(self):
diff --git a/erpnext/crm/doctype/prospect/test_prospect.py b/erpnext/crm/doctype/prospect/test_prospect.py
index 0fffad1..fa44e20 100644
--- a/erpnext/crm/doctype/prospect/test_prospect.py
+++ b/erpnext/crm/doctype/prospect/test_prospect.py
@@ -1,11 +1,13 @@
 # Copyright (c) 2021, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 
-import frappe
 import unittest
+
+import frappe
 from frappe.utils import random_string
-from erpnext.crm.doctype.lead.test_lead import make_lead
+
 from erpnext.crm.doctype.lead.lead import add_lead_to_prospect
+from erpnext.crm.doctype.lead.test_lead import make_lead
 
 
 class TestProspect(unittest.TestCase):
diff --git a/erpnext/crm/doctype/prospect_lead/prospect_lead.py b/erpnext/crm/doctype/prospect_lead/prospect_lead.py
index 2be5a5f..40edbe0 100644
--- a/erpnext/crm/doctype/prospect_lead/prospect_lead.py
+++ b/erpnext/crm/doctype/prospect_lead/prospect_lead.py
@@ -4,5 +4,6 @@
 # import frappe
 from frappe.model.document import Document
 
+
 class ProspectLead(Document):
 	pass
diff --git a/erpnext/crm/doctype/sales_stage/sales_stage.py b/erpnext/crm/doctype/sales_stage/sales_stage.py
index a80f4cc..e9e176f 100644
--- a/erpnext/crm/doctype/sales_stage/sales_stage.py
+++ b/erpnext/crm/doctype/sales_stage/sales_stage.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class SalesStage(Document):
 	pass
diff --git a/erpnext/crm/doctype/sales_stage/test_sales_stage.py b/erpnext/crm/doctype/sales_stage/test_sales_stage.py
index 80b6513..83d1f26 100644
--- a/erpnext/crm/doctype/sales_stage/test_sales_stage.py
+++ b/erpnext/crm/doctype/sales_stage/test_sales_stage.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestSalesStage(unittest.TestCase):
 	pass
diff --git a/erpnext/crm/doctype/social_media_post/social_media_post.py b/erpnext/crm/doctype/social_media_post/social_media_post.py
index 8e441ed..14d4521 100644
--- a/erpnext/crm/doctype/social_media_post/social_media_post.py
+++ b/erpnext/crm/doctype/social_media_post/social_media_post.py
@@ -3,11 +3,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe.model.document import Document
-from frappe import _
+
 import datetime
 
+import frappe
+from frappe import _
+from frappe.model.document import Document
+
+
 class SocialMediaPost(Document):
 	def validate(self):
 		if (not self.twitter and not self.linkedin):
diff --git a/erpnext/crm/doctype/social_media_post/test_social_media_post.py b/erpnext/crm/doctype/social_media_post/test_social_media_post.py
index ec81ee5..c2d0418 100644
--- a/erpnext/crm/doctype/social_media_post/test_social_media_post.py
+++ b/erpnext/crm/doctype/social_media_post/test_social_media_post.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestSocialMediaPost(unittest.TestCase):
 	pass
diff --git a/erpnext/crm/doctype/twitter_settings/test_twitter_settings.py b/erpnext/crm/doctype/twitter_settings/test_twitter_settings.py
index 3f999c1..ff3163c 100644
--- a/erpnext/crm/doctype/twitter_settings/test_twitter_settings.py
+++ b/erpnext/crm/doctype/twitter_settings/test_twitter_settings.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestTwitterSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/crm/doctype/twitter_settings/twitter_settings.py b/erpnext/crm/doctype/twitter_settings/twitter_settings.py
index 9c37ffd..0205cca 100644
--- a/erpnext/crm/doctype/twitter_settings/twitter_settings.py
+++ b/erpnext/crm/doctype/twitter_settings/twitter_settings.py
@@ -3,13 +3,18 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, os, tweepy, json
+
+import json
+
+import frappe
+import tweepy
 from frappe import _
 from frappe.model.document import Document
+from frappe.utils import get_url_to_form
 from frappe.utils.file_manager import get_file_path
-from frappe.utils import get_url_to_form, get_link_to_form
 from tweepy.error import TweepError
 
+
 class TwitterSettings(Document):
 	@frappe.whitelist()
 	def get_authorize_url(self):
diff --git a/erpnext/crm/doctype/utils.py b/erpnext/crm/doctype/utils.py
index f244daf..0da0e0e 100644
--- a/erpnext/crm/doctype/utils.py
+++ b/erpnext/crm/doctype/utils.py
@@ -1,6 +1,6 @@
+
 import frappe
-from frappe import _
-import json
+
 
 @frappe.whitelist()
 def get_last_interaction(contact=None, lead=None):
diff --git a/erpnext/crm/report/campaign_efficiency/campaign_efficiency.py b/erpnext/crm/report/campaign_efficiency/campaign_efficiency.py
index 238884b..87f516b 100644
--- a/erpnext/crm/report/campaign_efficiency/campaign_efficiency.py
+++ b/erpnext/crm/report/campaign_efficiency/campaign_efficiency.py
@@ -2,10 +2,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import flt
 
+
 def execute(filters=None):
 	columns, data = [], []
 	columns=get_columns("Campaign Name")
diff --git a/erpnext/crm/report/first_response_time_for_opportunity/first_response_time_for_opportunity.py b/erpnext/crm/report/first_response_time_for_opportunity/first_response_time_for_opportunity.py
index 2ffbc3e..df57893 100644
--- a/erpnext/crm/report/first_response_time_for_opportunity/first_response_time_for_opportunity.py
+++ b/erpnext/crm/report/first_response_time_for_opportunity/first_response_time_for_opportunity.py
@@ -2,8 +2,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute(filters=None):
 	columns = [
 		{
diff --git a/erpnext/crm/report/lead_conversion_time/lead_conversion_time.py b/erpnext/crm/report/lead_conversion_time/lead_conversion_time.py
index e66bc1e..71efdb9 100644
--- a/erpnext/crm/report/lead_conversion_time/lead_conversion_time.py
+++ b/erpnext/crm/report/lead_conversion_time/lead_conversion_time.py
@@ -2,10 +2,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _, msgprint
 from frappe.utils import date_diff, flt
 
+
 def execute(filters=None):
 	if not filters: filters = {}
 
diff --git a/erpnext/crm/report/lead_details/lead_details.py b/erpnext/crm/report/lead_details/lead_details.py
index 072a476..11e8276 100644
--- a/erpnext/crm/report/lead_details/lead_details.py
+++ b/erpnext/crm/report/lead_details/lead_details.py
@@ -2,8 +2,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-from frappe import _
+
 import frappe
+from frappe import _
+
 
 def execute(filters=None):
 	columns, data = get_columns(), get_data(filters)
diff --git a/erpnext/crm/report/lead_owner_efficiency/lead_owner_efficiency.py b/erpnext/crm/report/lead_owner_efficiency/lead_owner_efficiency.py
index 8fe16a2..5406eba 100644
--- a/erpnext/crm/report/lead_owner_efficiency/lead_owner_efficiency.py
+++ b/erpnext/crm/report/lead_owner_efficiency/lead_owner_efficiency.py
@@ -2,10 +2,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe import _
+
 from erpnext.crm.report.campaign_efficiency.campaign_efficiency import get_lead_data
 
+
 def execute(filters=None):
 	columns, data = [], []
 	columns=get_columns()
diff --git a/erpnext/crm/report/lost_opportunity/lost_opportunity.py b/erpnext/crm/report/lost_opportunity/lost_opportunity.py
index 858dcc4..b308ceb 100644
--- a/erpnext/crm/report/lost_opportunity/lost_opportunity.py
+++ b/erpnext/crm/report/lost_opportunity/lost_opportunity.py
@@ -2,8 +2,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-from frappe import _
+
 import frappe
+from frappe import _
+
 
 def execute(filters=None):
 	columns, data = get_columns(), get_data(filters)
diff --git a/erpnext/crm/report/prospects_engaged_but_not_converted/prospects_engaged_but_not_converted.py b/erpnext/crm/report/prospects_engaged_but_not_converted/prospects_engaged_but_not_converted.py
index 425b7a8..4a16f3d 100644
--- a/erpnext/crm/report/prospects_engaged_but_not_converted/prospects_engaged_but_not_converted.py
+++ b/erpnext/crm/report/prospects_engaged_but_not_converted/prospects_engaged_but_not_converted.py
@@ -2,10 +2,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import add_days, now
 
+
 def execute(filters=None):
 	columns, data = [], []
 	set_defaut_value_for_filters(filters)
diff --git a/erpnext/demo/demo.py b/erpnext/demo/demo.py
index a4e4220..5be2420 100644
--- a/erpnext/demo/demo.py
+++ b/erpnext/demo/demo.py
@@ -1,11 +1,16 @@
 from __future__ import unicode_literals
 
-import frappe, sys
-import erpnext
+import sys
+
+import frappe
 import frappe.utils
-from erpnext.demo.user import hr, sales, purchase, manufacturing, stock, accounts, projects, fixed_asset
+
+import erpnext
+from erpnext.demo.setup import education, healthcare, manufacture, retail, setup_data
+from erpnext.demo.user import accounts
 from erpnext.demo.user import education as edu
-from erpnext.demo.setup import education, manufacture, setup_data, healthcare, retail
+from erpnext.demo.user import fixed_asset, hr, manufacturing, projects, purchase, sales, stock
+
 """
 Make a demo
 
diff --git a/erpnext/demo/setup/education.py b/erpnext/demo/setup/education.py
index cf9451d..304bc3d 100644
--- a/erpnext/demo/setup/education.py
+++ b/erpnext/demo/setup/education.py
@@ -2,11 +2,15 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-import frappe, json
-from frappe.utils.make_random import get_random
-from datetime import datetime
-from erpnext.demo.setup.setup_data import import_json
+import json
 import random
+from datetime import datetime
+
+import frappe
+from frappe.utils.make_random import get_random
+
+from erpnext.demo.setup.setup_data import import_json
+
 
 def setup_data():
 	frappe.flags.mute_emails = True
diff --git a/erpnext/demo/setup/healthcare.py b/erpnext/demo/setup/healthcare.py
index aa389e5..5d5707f 100644
--- a/erpnext/demo/setup/healthcare.py
+++ b/erpnext/demo/setup/healthcare.py
@@ -2,13 +2,17 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-import frappe, json
-from frappe.utils.make_random import get_random
 import datetime
-from erpnext.demo.setup.setup_data import import_json
+import json
+
+import frappe
 from frappe.utils import getdate
+from frappe.utils.make_random import get_random
+
+from erpnext.demo.setup.setup_data import import_json
 from erpnext.healthcare.doctype.lab_test.lab_test import create_test_from_template
 
+
 def setup_data():
 	frappe.flags.mute_emails = True
 	make_masters()
diff --git a/erpnext/demo/setup/manufacture.py b/erpnext/demo/setup/manufacture.py
index 7d6b501..5db3519 100644
--- a/erpnext/demo/setup/manufacture.py
+++ b/erpnext/demo/setup/manufacture.py
@@ -1,13 +1,16 @@
 from __future__ import unicode_literals
 
-import random, json
-import frappe
-from frappe.utils import nowdate, add_days
-from erpnext.demo.setup.setup_data import import_json
-from erpnext.demo.domains import data
+import json
+import random
 
+import frappe
+from frappe.utils import add_days, nowdate
 from six import iteritems
 
+from erpnext.demo.domains import data
+from erpnext.demo.setup.setup_data import import_json
+
+
 def setup_data():
 	import_json("Location")
 	import_json("Asset Category")
diff --git a/erpnext/demo/setup/retail.py b/erpnext/demo/setup/retail.py
index 82d1c15..d94d2d6 100644
--- a/erpnext/demo/setup/retail.py
+++ b/erpnext/demo/setup/retail.py
@@ -1,12 +1,12 @@
 from __future__ import unicode_literals
 
-import random, json
+import json
+
 import frappe
-from frappe.utils import nowdate, add_days
-from erpnext.demo.setup.setup_data import import_json
+from six import iteritems
+
 from erpnext.demo.domains import data
 
-from six import iteritems
 
 def setup_data():
 	setup_item()
diff --git a/erpnext/demo/setup/setup_data.py b/erpnext/demo/setup/setup_data.py
index 05ee28a..42f83a3 100644
--- a/erpnext/demo/setup/setup_data.py
+++ b/erpnext/demo/setup/setup_data.py
@@ -1,13 +1,18 @@
 from __future__ import print_function, unicode_literals
 
-import random, json
-import frappe, erpnext
-from frappe.utils.nestedset import get_root_of
-from frappe.utils import flt, now_datetime, cstr, random_string
-from frappe.utils.make_random import add_random_children, get_random
-from frappe.custom.doctype.custom_field.custom_field import create_custom_fields
-from erpnext.demo.domains import data
+import json
+import random
+
+import frappe
 from frappe import _
+from frappe.custom.doctype.custom_field.custom_field import create_custom_fields
+from frappe.utils import cstr, flt, now_datetime, random_string
+from frappe.utils.make_random import add_random_children, get_random
+from frappe.utils.nestedset import get_root_of
+
+import erpnext
+from erpnext.demo.domains import data
+
 
 def setup(domain):
 	frappe.flags.in_demo = 1
diff --git a/erpnext/demo/user/accounts.py b/erpnext/demo/user/accounts.py
index 7fab772..2a24824 100644
--- a/erpnext/demo/user/accounts.py
+++ b/erpnext/demo/user/accounts.py
@@ -4,19 +4,25 @@
 
 from __future__ import unicode_literals
 
-import erpnext
-import frappe
 import random
-from frappe.utils import random_string
+
+import frappe
 from frappe.desk import query_report
+from frappe.utils import random_string
+from frappe.utils.make_random import get_random
+
+import erpnext
 from erpnext.accounts.doctype.journal_entry.journal_entry import get_payment_entry_against_invoice
 from erpnext.accounts.doctype.payment_entry.payment_entry import get_payment_entry
-from frappe.utils.make_random import get_random
-from erpnext.accounts.doctype.payment_request.payment_request import make_payment_request, make_payment_entry
+from erpnext.accounts.doctype.payment_request.payment_request import (
+	make_payment_entry,
+	make_payment_request,
+)
 from erpnext.demo.user.sales import make_sales_order
 from erpnext.selling.doctype.sales_order.sales_order import make_sales_invoice
 from erpnext.stock.doctype.purchase_receipt.purchase_receipt import make_purchase_invoice
 
+
 def work():
 	frappe.set_user(frappe.db.get_global('demo_accounts_user'))
 
diff --git a/erpnext/demo/user/education.py b/erpnext/demo/user/education.py
index 883a6d8..adc0463 100644
--- a/erpnext/demo/user/education.py
+++ b/erpnext/demo/user/education.py
@@ -4,13 +4,21 @@
 
 from __future__ import unicode_literals
 
-import frappe
 import random
+from datetime import timedelta
+
+import frappe
 from frappe.utils import cstr
 from frappe.utils.make_random import get_random
-from datetime import timedelta
-from erpnext.education.api import get_student_group_students, make_attendance_records, enroll_student, \
-								get_fee_schedule, collect_fees, get_course
+
+from erpnext.education.api import (
+	collect_fees,
+	enroll_student,
+	get_course,
+	get_fee_schedule,
+	get_student_group_students,
+	make_attendance_records,
+)
 
 
 def work():
diff --git a/erpnext/demo/user/fixed_asset.py b/erpnext/demo/user/fixed_asset.py
index dc094e1..ec0e4c8 100644
--- a/erpnext/demo/user/fixed_asset.py
+++ b/erpnext/demo/user/fixed_asset.py
@@ -6,6 +6,7 @@
 
 import frappe
 from frappe.utils.make_random import get_random
+
 from erpnext.assets.doctype.asset.asset import make_sales_invoice
 from erpnext.assets.doctype.asset.depreciation import post_depreciation_entries, scrap_asset
 
diff --git a/erpnext/demo/user/hr.py b/erpnext/demo/user/hr.py
index 0211bc8..17d5829 100644
--- a/erpnext/demo/user/hr.py
+++ b/erpnext/demo/user/hr.py
@@ -1,15 +1,23 @@
 from __future__ import unicode_literals
-import frappe, erpnext
-import random
+
 import datetime
-from frappe.utils import random_string, add_days, get_last_day, getdate
+import random
+
+import frappe
+from frappe.utils import add_days, get_last_day, getdate, random_string
+from frappe.utils.make_random import get_random
+
+import erpnext
+from erpnext.hr.doctype.expense_claim.expense_claim import make_bank_entry
+from erpnext.hr.doctype.expense_claim.test_expense_claim import get_payable_account
+from erpnext.hr.doctype.leave_application.leave_application import (
+	AttendanceAlreadyMarkedError,
+	OverlapError,
+	get_leave_balance_on,
+)
 from erpnext.projects.doctype.timesheet.test_timesheet import make_timesheet
 from erpnext.projects.doctype.timesheet.timesheet import make_salary_slip, make_sales_invoice
-from frappe.utils.make_random import get_random
-from erpnext.hr.doctype.expense_claim.test_expense_claim import get_payable_account
-from erpnext.hr.doctype.expense_claim.expense_claim import make_bank_entry
-from erpnext.hr.doctype.leave_application.leave_application import (get_leave_balance_on,
-	OverlapError, AttendanceAlreadyMarkedError)
+
 
 def work():
 	frappe.set_user(frappe.db.get_global('demo_hr_user'))
diff --git a/erpnext/demo/user/manufacturing.py b/erpnext/demo/user/manufacturing.py
index bece079..6e01f0f 100644
--- a/erpnext/demo/user/manufacturing.py
+++ b/erpnext/demo/user/manufacturing.py
@@ -3,21 +3,23 @@
 
 from __future__ import unicode_literals
 
-import frappe, random, erpnext
+import random
 from datetime import timedelta
-from frappe.utils.make_random import how_many
+
+import frappe
 from frappe.desk import query_report
-from erpnext.manufacturing.doctype.workstation.workstation import WorkstationHolidayError
+from frappe.utils.make_random import how_many
+
+import erpnext
 from erpnext.manufacturing.doctype.work_order.test_work_order import make_wo_order_test_record
 
+
 def work():
 	if random.random() < 0.3: return
 
 	frappe.set_user(frappe.db.get_global('demo_manufacturing_user'))
 	if not frappe.get_all('Sales Order'): return
 
-	from erpnext.projects.doctype.timesheet.timesheet import OverlapError
-
 	ppt = frappe.new_doc("Production Plan")
 	ppt.company = erpnext.get_default_company()
 	# ppt.use_multi_level_bom = 1 #refactored
@@ -68,9 +70,12 @@
 
 def make_stock_entry_from_pro(pro_id, purpose):
 	from erpnext.manufacturing.doctype.work_order.work_order import make_stock_entry
+	from erpnext.stock.doctype.stock_entry.stock_entry import (
+		DuplicateEntryForWorkOrderError,
+		IncorrectValuationRateError,
+		OperationsNotCompleteError,
+	)
 	from erpnext.stock.stock_ledger import NegativeStockError
-	from erpnext.stock.doctype.stock_entry.stock_entry import IncorrectValuationRateError, \
-		DuplicateEntryForWorkOrderError, OperationsNotCompleteError
 
 	try:
 		st = frappe.get_doc(make_stock_entry(pro_id, purpose))
diff --git a/erpnext/demo/user/projects.py b/erpnext/demo/user/projects.py
index 044e296..b6b99de 100644
--- a/erpnext/demo/user/projects.py
+++ b/erpnext/demo/user/projects.py
@@ -3,11 +3,14 @@
 
 from __future__ import unicode_literals
 
-import frappe, erpnext
+import frappe
 from frappe.utils import flt
 from frappe.utils.make_random import get_random
-from erpnext.projects.doctype.timesheet.test_timesheet import make_timesheet
+
+import erpnext
 from erpnext.demo.user.hr import make_sales_invoice_for_timesheet
+from erpnext.projects.doctype.timesheet.test_timesheet import make_timesheet
+
 
 def run_projects(current_date):
 	frappe.set_user(frappe.db.get_global('demo_projects_user'))
diff --git a/erpnext/demo/user/purchase.py b/erpnext/demo/user/purchase.py
index b7aca79..ec32f97 100644
--- a/erpnext/demo/user/purchase.py
+++ b/erpnext/demo/user/purchase.py
@@ -3,15 +3,22 @@
 
 from __future__ import unicode_literals
 
-import frappe, random, json, erpnext
-from frappe.utils.make_random import how_many, get_random
+import json
+import random
+
+import frappe
 from frappe.desk import query_report
-from erpnext.setup.utils import get_exchange_rate
+from frappe.utils.make_random import get_random, how_many
+
+import erpnext
 from erpnext.accounts.party import get_party_account_currency
+from erpnext.buying.doctype.request_for_quotation.request_for_quotation import (
+	make_supplier_quotation_from_rfq,
+)
 from erpnext.exceptions import InvalidCurrency
+from erpnext.setup.utils import get_exchange_rate
 from erpnext.stock.doctype.material_request.material_request import make_request_for_quotation
-from erpnext.buying.doctype.request_for_quotation.request_for_quotation import \
-			 make_supplier_quotation_from_rfq
+
 
 def work():
 	frappe.set_user(frappe.db.get_global('demo_purchase_user'))
diff --git a/erpnext/demo/user/sales.py b/erpnext/demo/user/sales.py
index 8d5ba28..95494ee 100644
--- a/erpnext/demo/user/sales.py
+++ b/erpnext/demo/user/sales.py
@@ -3,12 +3,20 @@
 
 from __future__ import unicode_literals
 
-import frappe, random, erpnext
+import random
+
+import frappe
 from frappe.utils import flt
 from frappe.utils.make_random import add_random_children, get_random
-from erpnext.setup.utils import get_exchange_rate
+
+import erpnext
+from erpnext.accounts.doctype.payment_request.payment_request import (
+	make_payment_entry,
+	make_payment_request,
+)
 from erpnext.accounts.party import get_party_account_currency
-from erpnext.accounts.doctype.payment_request.payment_request import make_payment_request, make_payment_entry
+from erpnext.setup.utils import get_exchange_rate
+
 
 def work(domain="Manufacturing"):
 	frappe.set_user(frappe.db.get_global('demo_sales_user_2'))
diff --git a/erpnext/demo/user/stock.py b/erpnext/demo/user/stock.py
index d44da7d..188fc13 100644
--- a/erpnext/demo/user/stock.py
+++ b/erpnext/demo/user/stock.py
@@ -3,13 +3,18 @@
 
 from __future__ import print_function, unicode_literals
 
-import frappe, random, erpnext
+import random
+
+import frappe
 from frappe.desk import query_report
-from erpnext.stock.stock_ledger import NegativeStockError
-from erpnext.stock.doctype.serial_no.serial_no import SerialNoRequiredError, SerialNoQtyError
+
+import erpnext
 from erpnext.stock.doctype.batch.batch import UnableToSelectBatchError
 from erpnext.stock.doctype.delivery_note.delivery_note import make_sales_return
 from erpnext.stock.doctype.purchase_receipt.purchase_receipt import make_purchase_return
+from erpnext.stock.doctype.serial_no.serial_no import SerialNoQtyError, SerialNoRequiredError
+from erpnext.stock.stock_ledger import NegativeStockError
+
 
 def work():
 	frappe.set_user(frappe.db.get_global('demo_manufacturing_user'))
@@ -66,8 +71,10 @@
 
 def make_stock_reconciliation():
 	# random set some items as damaged
-	from erpnext.stock.doctype.stock_reconciliation.stock_reconciliation \
-		import OpeningEntryAccountError, EmptyStockReconciliationItemsError
+	from erpnext.stock.doctype.stock_reconciliation.stock_reconciliation import (
+		EmptyStockReconciliationItemsError,
+		OpeningEntryAccountError,
+	)
 
 	if random.random() < 0.4:
 		stock_reco = frappe.new_doc("Stock Reconciliation")
@@ -88,8 +95,11 @@
 				frappe.db.rollback()
 
 def submit_draft_stock_entries():
-	from erpnext.stock.doctype.stock_entry.stock_entry import IncorrectValuationRateError, \
-		DuplicateEntryForWorkOrderError, OperationsNotCompleteError
+	from erpnext.stock.doctype.stock_entry.stock_entry import (
+		DuplicateEntryForWorkOrderError,
+		IncorrectValuationRateError,
+		OperationsNotCompleteError,
+	)
 
 	# try posting older drafts (if exists)
 	frappe.db.commit()
diff --git a/erpnext/education/__init__.py b/erpnext/education/__init__.py
index c0589bb..a3164b2 100644
--- a/erpnext/education/__init__.py
+++ b/erpnext/education/__init__.py
@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 class StudentNotInGroupError(frappe.ValidationError): pass
 
 def validate_student_belongs_to_group(student, student_group):
diff --git a/erpnext/education/api.py b/erpnext/education/api.py
index 4493a3f..d2a8805 100644
--- a/erpnext/education/api.py
+++ b/erpnext/education/api.py
@@ -3,12 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import json
+
+import frappe
 from frappe import _
-from frappe.model.mapper import get_mapped_doc
-from frappe.utils import flt, cstr, getdate
 from frappe.email.doctype.email_group.email_group import add_subscribers
+from frappe.model.mapper import get_mapped_doc
+from frappe.utils import cstr, flt, getdate
+
 
 def get_course(program):
 	'''Return list of courses for a particular program
diff --git a/erpnext/education/doctype/academic_term/academic_term.py b/erpnext/education/doctype/academic_term/academic_term.py
index fa7f289..b8e22b6 100644
--- a/erpnext/education/doctype/academic_term/academic_term.py
+++ b/erpnext/education/doctype/academic_term/academic_term.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import getdate
 from frappe.model.document import Document
+from frappe.utils import getdate
+
 
 class AcademicTerm(Document):
     def autoname(self):
diff --git a/erpnext/education/doctype/academic_term/academic_term_dashboard.py b/erpnext/education/doctype/academic_term/academic_term_dashboard.py
index eb2f907..a1087b8 100644
--- a/erpnext/education/doctype/academic_term/academic_term_dashboard.py
+++ b/erpnext/education/doctype/academic_term/academic_term_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'academic_term',
diff --git a/erpnext/education/doctype/academic_term/test_academic_term.py b/erpnext/education/doctype/academic_term/test_academic_term.py
index 0964a56..6329103 100644
--- a/erpnext/education/doctype/academic_term/test_academic_term.py
+++ b/erpnext/education/doctype/academic_term/test_academic_term.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Academic Term')
diff --git a/erpnext/education/doctype/academic_year/academic_year.py b/erpnext/education/doctype/academic_year/academic_year.py
index f2858a4..77b67d8 100644
--- a/erpnext/education/doctype/academic_year/academic_year.py
+++ b/erpnext/education/doctype/academic_year/academic_year.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe import msgprint, _
+from frappe import _
 from frappe.model.document import Document
 
+
 class AcademicYear(Document):
     def validate(self):
         #Check that start of academic year is earlier than end of academic year
diff --git a/erpnext/education/doctype/academic_year/academic_year_dashboard.py b/erpnext/education/doctype/academic_year/academic_year_dashboard.py
index d3734df..49d68c3 100644
--- a/erpnext/education/doctype/academic_year/academic_year_dashboard.py
+++ b/erpnext/education/doctype/academic_year/academic_year_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'academic_year',
diff --git a/erpnext/education/doctype/academic_year/test_academic_year.py b/erpnext/education/doctype/academic_year/test_academic_year.py
index 9da75a7..31135c4 100644
--- a/erpnext/education/doctype/academic_year/test_academic_year.py
+++ b/erpnext/education/doctype/academic_year/test_academic_year.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Academic Year')
diff --git a/erpnext/education/doctype/article/article.py b/erpnext/education/doctype/article/article.py
index b5cc5cb..f3c7788 100644
--- a/erpnext/education/doctype/article/article.py
+++ b/erpnext/education/doctype/article/article.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 
+
 class Article(Document):
 	def get_article(self):
 		pass
diff --git a/erpnext/education/doctype/article/test_article.py b/erpnext/education/doctype/article/test_article.py
index 2fce07f..cda79ad 100644
--- a/erpnext/education/doctype/article/test_article.py
+++ b/erpnext/education/doctype/article/test_article.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestArticle(unittest.TestCase):
 	pass
diff --git a/erpnext/education/doctype/assessment_criteria/assessment_criteria.py b/erpnext/education/doctype/assessment_criteria/assessment_criteria.py
index bfbf26c..f8f04bf 100644
--- a/erpnext/education/doctype/assessment_criteria/assessment_criteria.py
+++ b/erpnext/education/doctype/assessment_criteria/assessment_criteria.py
@@ -3,6 +3,7 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
diff --git a/erpnext/education/doctype/assessment_criteria/test_assessment_criteria.py b/erpnext/education/doctype/assessment_criteria/test_assessment_criteria.py
index fc0d745..1098d03 100644
--- a/erpnext/education/doctype/assessment_criteria/test_assessment_criteria.py
+++ b/erpnext/education/doctype/assessment_criteria/test_assessment_criteria.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Assessment Criteria')
diff --git a/erpnext/education/doctype/assessment_criteria_group/assessment_criteria_group.py b/erpnext/education/doctype/assessment_criteria_group/assessment_criteria_group.py
index 75381e1..e62c030 100644
--- a/erpnext/education/doctype/assessment_criteria_group/assessment_criteria_group.py
+++ b/erpnext/education/doctype/assessment_criteria_group/assessment_criteria_group.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class AssessmentCriteriaGroup(Document):
 	pass
diff --git a/erpnext/education/doctype/assessment_criteria_group/test_assessment_criteria_group.py b/erpnext/education/doctype/assessment_criteria_group/test_assessment_criteria_group.py
index 5b29337..d65f1e7 100644
--- a/erpnext/education/doctype/assessment_criteria_group/test_assessment_criteria_group.py
+++ b/erpnext/education/doctype/assessment_criteria_group/test_assessment_criteria_group.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Assessment Criteria Group')
diff --git a/erpnext/education/doctype/assessment_group/assessment_group.py b/erpnext/education/doctype/assessment_group/assessment_group.py
index 88acc12..3425109 100644
--- a/erpnext/education/doctype/assessment_group/assessment_group.py
+++ b/erpnext/education/doctype/assessment_group/assessment_group.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class AssessmentGroup(Document):
 	pass
diff --git a/erpnext/education/doctype/assessment_group/assessment_group_dashboard.py b/erpnext/education/doctype/assessment_group/assessment_group_dashboard.py
index 1a23606..83438c0 100644
--- a/erpnext/education/doctype/assessment_group/assessment_group_dashboard.py
+++ b/erpnext/education/doctype/assessment_group/assessment_group_dashboard.py
@@ -1,8 +1,10 @@
 # Copyright (c) 2020, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'assessment_group',
diff --git a/erpnext/education/doctype/assessment_group/test_assessment_group.py b/erpnext/education/doctype/assessment_group/test_assessment_group.py
index 2fd98b6..822d65c 100644
--- a/erpnext/education/doctype/assessment_group/test_assessment_group.py
+++ b/erpnext/education/doctype/assessment_group/test_assessment_group.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Assessment Group')
diff --git a/erpnext/education/doctype/assessment_plan/assessment_plan.py b/erpnext/education/doctype/assessment_plan/assessment_plan.py
index 16136c1..2a58a31 100644
--- a/erpnext/education/doctype/assessment_plan/assessment_plan.py
+++ b/erpnext/education/doctype/assessment_plan/assessment_plan.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-from frappe.model.document import Document
+
 import frappe
 from frappe import _
+from frappe.model.document import Document
+
 
 class AssessmentPlan(Document):
 	def validate(self):
diff --git a/erpnext/education/doctype/assessment_plan/assessment_plan_dashboard.py b/erpnext/education/doctype/assessment_plan/assessment_plan_dashboard.py
index 8ac3faf..6729538 100644
--- a/erpnext/education/doctype/assessment_plan/assessment_plan_dashboard.py
+++ b/erpnext/education/doctype/assessment_plan/assessment_plan_dashboard.py
@@ -1,8 +1,10 @@
 # Copyright (c) 2020, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'assessment_plan',
diff --git a/erpnext/education/doctype/assessment_plan/test_assessment_plan.py b/erpnext/education/doctype/assessment_plan/test_assessment_plan.py
index 2de4f23..9a6b886 100644
--- a/erpnext/education/doctype/assessment_plan/test_assessment_plan.py
+++ b/erpnext/education/doctype/assessment_plan/test_assessment_plan.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Assessment Plan')
diff --git a/erpnext/education/doctype/assessment_plan_criteria/assessment_plan_criteria.py b/erpnext/education/doctype/assessment_plan_criteria/assessment_plan_criteria.py
index 53b477f..795462d 100644
--- a/erpnext/education/doctype/assessment_plan_criteria/assessment_plan_criteria.py
+++ b/erpnext/education/doctype/assessment_plan_criteria/assessment_plan_criteria.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class AssessmentPlanCriteria(Document):
 	pass
diff --git a/erpnext/education/doctype/assessment_result/assessment_result.py b/erpnext/education/doctype/assessment_result/assessment_result.py
index 7dfe0cf..01f483f 100644
--- a/erpnext/education/doctype/assessment_result/assessment_result.py
+++ b/erpnext/education/doctype/assessment_result/assessment_result.py
@@ -3,14 +3,16 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import flt
 from frappe.model.document import Document
-from erpnext.education.api import get_grade
-from erpnext.education.api import get_assessment_details
+from frappe.utils import flt
 from frappe.utils.csvutils import getlink
+
 import erpnext.education
+from erpnext.education.api import get_assessment_details, get_grade
+
 
 class AssessmentResult(Document):
 	def validate(self):
diff --git a/erpnext/education/doctype/assessment_result/assessment_result_dashboard.py b/erpnext/education/doctype/assessment_result/assessment_result_dashboard.py
index 2526076..f9e2008 100644
--- a/erpnext/education/doctype/assessment_result/assessment_result_dashboard.py
+++ b/erpnext/education/doctype/assessment_result/assessment_result_dashboard.py
@@ -1,8 +1,10 @@
 # Copyright (c) 2020, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'reports': [
diff --git a/erpnext/education/doctype/assessment_result/test_assessment_result.py b/erpnext/education/doctype/assessment_result/test_assessment_result.py
index adce577..fa0ad1f 100644
--- a/erpnext/education/doctype/assessment_result/test_assessment_result.py
+++ b/erpnext/education/doctype/assessment_result/test_assessment_result.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
 from erpnext.education.api import get_grade
 
 # test_records = frappe.get_test_records('Assessment Result')
diff --git a/erpnext/education/doctype/assessment_result_detail/assessment_result_detail.py b/erpnext/education/doctype/assessment_result_detail/assessment_result_detail.py
index d051593..234dff0 100644
--- a/erpnext/education/doctype/assessment_result_detail/assessment_result_detail.py
+++ b/erpnext/education/doctype/assessment_result_detail/assessment_result_detail.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class AssessmentResultDetail(Document):
 	pass
diff --git a/erpnext/education/doctype/assessment_result_tool/assessment_result_tool.py b/erpnext/education/doctype/assessment_result_tool/assessment_result_tool.py
index a0d286c..83b4f56 100644
--- a/erpnext/education/doctype/assessment_result_tool/assessment_result_tool.py
+++ b/erpnext/education/doctype/assessment_result_tool/assessment_result_tool.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class AssessmentResultTool(Document):
 	pass
diff --git a/erpnext/education/doctype/assessment_result_tool/test_assessment_result_tool.py b/erpnext/education/doctype/assessment_result_tool/test_assessment_result_tool.py
index f784ccb..bcc5722 100644
--- a/erpnext/education/doctype/assessment_result_tool/test_assessment_result_tool.py
+++ b/erpnext/education/doctype/assessment_result_tool/test_assessment_result_tool.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestAssessmentResultTool(unittest.TestCase):
 	pass
diff --git a/erpnext/education/doctype/content_activity/content_activity.py b/erpnext/education/doctype/content_activity/content_activity.py
index 2ae7a5c..076e2d3 100644
--- a/erpnext/education/doctype/content_activity/content_activity.py
+++ b/erpnext/education/doctype/content_activity/content_activity.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ContentActivity(Document):
 	pass
diff --git a/erpnext/education/doctype/content_question/content_question.py b/erpnext/education/doctype/content_question/content_question.py
index b239d21..9c24916 100644
--- a/erpnext/education/doctype/content_question/content_question.py
+++ b/erpnext/education/doctype/content_question/content_question.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ContentQuestion(Document):
 	pass
diff --git a/erpnext/education/doctype/content_question/test_content_question.py b/erpnext/education/doctype/content_question/test_content_question.py
index 268b9be..f6bd49b 100644
--- a/erpnext/education/doctype/content_question/test_content_question.py
+++ b/erpnext/education/doctype/content_question/test_content_question.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestContentQuestion(unittest.TestCase):
 	pass
diff --git a/erpnext/education/doctype/course/course.py b/erpnext/education/doctype/course/course.py
index 92f92ed..9cc373a 100644
--- a/erpnext/education/doctype/course/course.py
+++ b/erpnext/education/doctype/course/course.py
@@ -3,10 +3,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import json
-from frappe.model.document import Document
+
+import frappe
 from frappe import _
+from frappe.model.document import Document
+
 
 class Course(Document):
 	def validate(self):
diff --git a/erpnext/education/doctype/course/course_dashboard.py b/erpnext/education/doctype/course/course_dashboard.py
index 8de91b1..8eca2a1 100644
--- a/erpnext/education/doctype/course/course_dashboard.py
+++ b/erpnext/education/doctype/course/course_dashboard.py
@@ -1,8 +1,10 @@
 # Copyright (c) 2020, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'course',
diff --git a/erpnext/education/doctype/course/test_course.py b/erpnext/education/doctype/course/test_course.py
index 4667ac4..dd43ef4 100644
--- a/erpnext/education/doctype/course/test_course.py
+++ b/erpnext/education/doctype/course/test_course.py
@@ -2,11 +2,12 @@
 # Copyright (c) 2015, Frappe Technologies and Contributors
 # See license.txt
 from __future__ import unicode_literals
-from erpnext.education.doctype.topic.test_topic import make_topic
-from erpnext.education.doctype.topic.test_topic import make_topic_and_linked_content
+
+import unittest
 
 import frappe
-import unittest
+
+from erpnext.education.doctype.topic.test_topic import make_topic, make_topic_and_linked_content
 
 # test_records = frappe.get_test_records('Course')
 
diff --git a/erpnext/education/doctype/course_activity/course_activity.py b/erpnext/education/doctype/course_activity/course_activity.py
index 3aa1ea0..61b51a0 100644
--- a/erpnext/education/doctype/course_activity/course_activity.py
+++ b/erpnext/education/doctype/course_activity/course_activity.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
 
+
 class CourseActivity(Document):
 	def validate(self):
 		self.check_if_enrolled()
diff --git a/erpnext/education/doctype/course_activity/test_course_activity.py b/erpnext/education/doctype/course_activity/test_course_activity.py
index 5269a6b..778cefe 100644
--- a/erpnext/education/doctype/course_activity/test_course_activity.py
+++ b/erpnext/education/doctype/course_activity/test_course_activity.py
@@ -3,9 +3,11 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
+
 class TestCourseActivity(unittest.TestCase):
 	pass
 
diff --git a/erpnext/education/doctype/course_assessment_criteria/course_assessment_criteria.py b/erpnext/education/doctype/course_assessment_criteria/course_assessment_criteria.py
index ade2a39..df384c5 100644
--- a/erpnext/education/doctype/course_assessment_criteria/course_assessment_criteria.py
+++ b/erpnext/education/doctype/course_assessment_criteria/course_assessment_criteria.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class CourseAssessmentCriteria(Document):
 	pass
diff --git a/erpnext/education/doctype/course_content/course_content.py b/erpnext/education/doctype/course_content/course_content.py
index 0d2f85a..1dd08ad 100644
--- a/erpnext/education/doctype/course_content/course_content.py
+++ b/erpnext/education/doctype/course_content/course_content.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class CourseContent(Document):
 	pass
diff --git a/erpnext/education/doctype/course_content/test_course_content.py b/erpnext/education/doctype/course_content/test_course_content.py
index 9be4b1f..320fa11 100644
--- a/erpnext/education/doctype/course_content/test_course_content.py
+++ b/erpnext/education/doctype/course_content/test_course_content.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestCourseContent(unittest.TestCase):
 	pass
diff --git a/erpnext/education/doctype/course_enrollment/course_enrollment.py b/erpnext/education/doctype/course_enrollment/course_enrollment.py
index ce88990..21e7451 100644
--- a/erpnext/education/doctype/course_enrollment/course_enrollment.py
+++ b/erpnext/education/doctype/course_enrollment/course_enrollment.py
@@ -3,11 +3,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
+from functools import reduce
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
 from frappe.utils import get_link_to_form
-from functools import reduce
+
 
 class CourseEnrollment(Document):
 	def validate(self):
diff --git a/erpnext/education/doctype/course_enrollment/course_enrollment_dashboard.py b/erpnext/education/doctype/course_enrollment/course_enrollment_dashboard.py
index 37972fe..253325c 100644
--- a/erpnext/education/doctype/course_enrollment/course_enrollment_dashboard.py
+++ b/erpnext/education/doctype/course_enrollment/course_enrollment_dashboard.py
@@ -1,8 +1,10 @@
 # Copyright (c) 2020, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'enrollment',
diff --git a/erpnext/education/doctype/course_enrollment/test_course_enrollment.py b/erpnext/education/doctype/course_enrollment/test_course_enrollment.py
index 874bf12..e5feb1b 100644
--- a/erpnext/education/doctype/course_enrollment/test_course_enrollment.py
+++ b/erpnext/education/doctype/course_enrollment/test_course_enrollment.py
@@ -3,14 +3,14 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
 
-from erpnext.education.doctype.student.test_student import create_student
-from erpnext.education.doctype.student.test_student import get_student
-from erpnext.education.doctype.program.test_program import setup_program
 from erpnext.education.doctype.course_activity.test_course_activity import make_course_activity
+from erpnext.education.doctype.program.test_program import setup_program
+from erpnext.education.doctype.student.test_student import create_student, get_student
+
 
 class TestCourseEnrollment(unittest.TestCase):
 	def setUp(self):
diff --git a/erpnext/education/doctype/course_schedule/course_schedule.py b/erpnext/education/doctype/course_schedule/course_schedule.py
index 748728d..38379e4 100644
--- a/erpnext/education/doctype/course_schedule/course_schedule.py
+++ b/erpnext/education/doctype/course_schedule/course_schedule.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
 
+
 class CourseSchedule(Document):
 	def validate(self):
 		self.instructor_name = frappe.db.get_value("Instructor", self.instructor, "instructor_name")
diff --git a/erpnext/education/doctype/course_schedule/course_schedule_dashboard.py b/erpnext/education/doctype/course_schedule/course_schedule_dashboard.py
index 22ce7e1..12a1735f 100644
--- a/erpnext/education/doctype/course_schedule/course_schedule_dashboard.py
+++ b/erpnext/education/doctype/course_schedule/course_schedule_dashboard.py
@@ -1,8 +1,10 @@
 # Copyright (c) 2020, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'course_schedule',
diff --git a/erpnext/education/doctype/course_schedule/test_course_schedule.py b/erpnext/education/doctype/course_schedule/test_course_schedule.py
index 5bb4de8..1b45ced 100644
--- a/erpnext/education/doctype/course_schedule/test_course_schedule.py
+++ b/erpnext/education/doctype/course_schedule/test_course_schedule.py
@@ -3,13 +3,13 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
+import datetime
 import unittest
 
-import datetime
-from frappe.utils import today, to_timedelta
+import frappe
+from frappe.utils import to_timedelta, today
+
 from erpnext.education.utils import OverlapError
-from frappe.utils.make_random import get_random
 
 # test_records = frappe.get_test_records('Course Schedule')
 
diff --git a/erpnext/education/doctype/course_scheduling_tool/course_scheduling_tool.py b/erpnext/education/doctype/course_scheduling_tool/course_scheduling_tool.py
index 66587f0..4f7ed36 100644
--- a/erpnext/education/doctype/course_scheduling_tool/course_scheduling_tool.py
+++ b/erpnext/education/doctype/course_scheduling_tool/course_scheduling_tool.py
@@ -3,11 +3,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import calendar
+
+import frappe
 from frappe import _
 from frappe.model.document import Document
 from frappe.utils import add_days, getdate
+
 from erpnext.education.utils import OverlapError
 
 
diff --git a/erpnext/education/doctype/course_scheduling_tool/test_course_scheduling_tool.py b/erpnext/education/doctype/course_scheduling_tool/test_course_scheduling_tool.py
index d921f8e..27379b7 100644
--- a/erpnext/education/doctype/course_scheduling_tool/test_course_scheduling_tool.py
+++ b/erpnext/education/doctype/course_scheduling_tool/test_course_scheduling_tool.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestCourseSchedulingTool(unittest.TestCase):
 	pass
diff --git a/erpnext/education/doctype/course_topic/course_topic.py b/erpnext/education/doctype/course_topic/course_topic.py
index 2364f17..11eb457 100644
--- a/erpnext/education/doctype/course_topic/course_topic.py
+++ b/erpnext/education/doctype/course_topic/course_topic.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class CourseTopic(Document):
 	pass
diff --git a/erpnext/education/doctype/course_topic/test_course_topic.py b/erpnext/education/doctype/course_topic/test_course_topic.py
index 7ce46d2..0bba7f5 100644
--- a/erpnext/education/doctype/course_topic/test_course_topic.py
+++ b/erpnext/education/doctype/course_topic/test_course_topic.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestCourseTopic(unittest.TestCase):
 	pass
diff --git a/erpnext/education/doctype/education_settings/education_settings.py b/erpnext/education/doctype/education_settings/education_settings.py
index 6c7e95c..71d13f7 100644
--- a/erpnext/education/doctype/education_settings/education_settings.py
+++ b/erpnext/education/doctype/education_settings/education_settings.py
@@ -3,6 +3,7 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 import frappe.defaults
 from frappe.model.document import Document
diff --git a/erpnext/education/doctype/education_settings/test_education_settings.py b/erpnext/education/doctype/education_settings/test_education_settings.py
index 038fb6e..3611cbe 100644
--- a/erpnext/education/doctype/education_settings/test_education_settings.py
+++ b/erpnext/education/doctype/education_settings/test_education_settings.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestEducationSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/education/doctype/fee_category/fee_category.py b/erpnext/education/doctype/fee_category/fee_category.py
index 5523444..f531f8a 100644
--- a/erpnext/education/doctype/fee_category/fee_category.py
+++ b/erpnext/education/doctype/fee_category/fee_category.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class FeeCategory(Document):
 	pass
diff --git a/erpnext/education/doctype/fee_category/test_fee_category.py b/erpnext/education/doctype/fee_category/test_fee_category.py
index 48e7589..8755684 100644
--- a/erpnext/education/doctype/fee_category/test_fee_category.py
+++ b/erpnext/education/doctype/fee_category/test_fee_category.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Fee Category')
diff --git a/erpnext/education/doctype/fee_component/fee_component.py b/erpnext/education/doctype/fee_component/fee_component.py
index 8694610..dba39af 100644
--- a/erpnext/education/doctype/fee_component/fee_component.py
+++ b/erpnext/education/doctype/fee_component/fee_component.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class FeeComponent(Document):
 	pass
diff --git a/erpnext/education/doctype/fee_schedule/fee_schedule.py b/erpnext/education/doctype/fee_schedule/fee_schedule.py
index 0b025c7..6bf4667 100644
--- a/erpnext/education/doctype/fee_schedule/fee_schedule.py
+++ b/erpnext/education/doctype/fee_schedule/fee_schedule.py
@@ -3,13 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
+
+import frappe
+from frappe import _
 from frappe.model.document import Document
 from frappe.model.mapper import get_mapped_doc
-from frappe.utils import money_in_words
-from frappe.utils import cint, flt, cstr
+from frappe.utils import cint, cstr, flt, money_in_words
 from frappe.utils.background_jobs import enqueue
-from frappe import _
+
+import erpnext
 
 
 class FeeSchedule(Document):
diff --git a/erpnext/education/doctype/fee_schedule/fee_schedule_dashboard.py b/erpnext/education/doctype/fee_schedule/fee_schedule_dashboard.py
index 4d7da21..34f8705 100644
--- a/erpnext/education/doctype/fee_schedule/fee_schedule_dashboard.py
+++ b/erpnext/education/doctype/fee_schedule/fee_schedule_dashboard.py
@@ -2,6 +2,7 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
+
 def get_data():
 	return {
 		'fieldname': 'fee_schedule',
diff --git a/erpnext/education/doctype/fee_schedule/test_fee_schedule.py b/erpnext/education/doctype/fee_schedule/test_fee_schedule.py
index 44e0756..86b74de 100644
--- a/erpnext/education/doctype/fee_schedule/test_fee_schedule.py
+++ b/erpnext/education/doctype/fee_schedule/test_fee_schedule.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestFeeSchedule(unittest.TestCase):
 	pass
diff --git a/erpnext/education/doctype/fee_schedule_program/fee_schedule_program.py b/erpnext/education/doctype/fee_schedule_program/fee_schedule_program.py
index 11d5697..5e9ed61 100644
--- a/erpnext/education/doctype/fee_schedule_program/fee_schedule_program.py
+++ b/erpnext/education/doctype/fee_schedule_program/fee_schedule_program.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class FeeScheduleProgram(Document):
 	pass
diff --git a/erpnext/education/doctype/fee_schedule_student_group/fee_schedule_student_group.py b/erpnext/education/doctype/fee_schedule_student_group/fee_schedule_student_group.py
index 776534d..ba30a91 100644
--- a/erpnext/education/doctype/fee_schedule_student_group/fee_schedule_student_group.py
+++ b/erpnext/education/doctype/fee_schedule_student_group/fee_schedule_student_group.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class FeeScheduleStudentGroup(Document):
 	pass
diff --git a/erpnext/education/doctype/fee_structure/fee_structure.py b/erpnext/education/doctype/fee_structure/fee_structure.py
index 9755717..a6cc701 100644
--- a/erpnext/education/doctype/fee_structure/fee_structure.py
+++ b/erpnext/education/doctype/fee_structure/fee_structure.py
@@ -3,6 +3,7 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 from frappe.model.mapper import get_mapped_doc
diff --git a/erpnext/education/doctype/fee_structure/fee_structure_dashboard.py b/erpnext/education/doctype/fee_structure/fee_structure_dashboard.py
index fdf7df7..c053b4e 100644
--- a/erpnext/education/doctype/fee_structure/fee_structure_dashboard.py
+++ b/erpnext/education/doctype/fee_structure/fee_structure_dashboard.py
@@ -1,8 +1,10 @@
 # Copyright (c) 2020, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'fee_structure',
diff --git a/erpnext/education/doctype/fee_structure/test_fee_structure.py b/erpnext/education/doctype/fee_structure/test_fee_structure.py
index 785ae4e..1311f13 100644
--- a/erpnext/education/doctype/fee_structure/test_fee_structure.py
+++ b/erpnext/education/doctype/fee_structure/test_fee_structure.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Fee Structure')
diff --git a/erpnext/education/doctype/fees/fees.py b/erpnext/education/doctype/fees/fees.py
index 7e86704..a5dc0dc 100644
--- a/erpnext/education/doctype/fees/fees.py
+++ b/erpnext/education/doctype/fees/fees.py
@@ -3,14 +3,16 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-from frappe.model.document import Document
-import frappe, erpnext
+
+import frappe
 from frappe import _
 from frappe.utils import money_in_words
-from erpnext.accounts.doctype.payment_request.payment_request import make_payment_request
 from frappe.utils.csvutils import getlink
-from erpnext.controllers.accounts_controller import AccountsController
+
+import erpnext
+from erpnext.accounts.doctype.payment_request.payment_request import make_payment_request
 from erpnext.accounts.general_ledger import make_reverse_gl_entries
+from erpnext.controllers.accounts_controller import AccountsController
 
 
 class Fees(AccountsController):
diff --git a/erpnext/education/doctype/fees/test_fees.py b/erpnext/education/doctype/fees/test_fees.py
index c6bb704..fbf7a57 100644
--- a/erpnext/education/doctype/fees/test_fees.py
+++ b/erpnext/education/doctype/fees/test_fees.py
@@ -3,10 +3,12 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
+import frappe
 from frappe.utils import nowdate
 from frappe.utils.make_random import get_random
+
 from erpnext.education.doctype.program.test_program import make_program_and_linked_courses
 
 test_dependencies = ['Company']
diff --git a/erpnext/education/doctype/grading_scale/grading_scale.py b/erpnext/education/doctype/grading_scale/grading_scale.py
index 0e73297..ed75f31 100644
--- a/erpnext/education/doctype/grading_scale/grading_scale.py
+++ b/erpnext/education/doctype/grading_scale/grading_scale.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import cint
 from frappe.model.document import Document
+from frappe.utils import cint
+
 
 class GradingScale(Document):
 	def validate(self):
diff --git a/erpnext/education/doctype/grading_scale/grading_scale_dashboard.py b/erpnext/education/doctype/grading_scale/grading_scale_dashboard.py
index 2a3f13b..268871a 100644
--- a/erpnext/education/doctype/grading_scale/grading_scale_dashboard.py
+++ b/erpnext/education/doctype/grading_scale/grading_scale_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'grading_scale',
diff --git a/erpnext/education/doctype/grading_scale/test_grading_scale.py b/erpnext/education/doctype/grading_scale/test_grading_scale.py
index 5364d7c..e5d83c2 100644
--- a/erpnext/education/doctype/grading_scale/test_grading_scale.py
+++ b/erpnext/education/doctype/grading_scale/test_grading_scale.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Grading Scale')
diff --git a/erpnext/education/doctype/grading_scale_interval/grading_scale_interval.py b/erpnext/education/doctype/grading_scale_interval/grading_scale_interval.py
index 41ac5ff..6e55aac 100644
--- a/erpnext/education/doctype/grading_scale_interval/grading_scale_interval.py
+++ b/erpnext/education/doctype/grading_scale_interval/grading_scale_interval.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class GradingScaleInterval(Document):
 	pass
diff --git a/erpnext/education/doctype/guardian/guardian.py b/erpnext/education/doctype/guardian/guardian.py
index e82cc54..f79e131 100644
--- a/erpnext/education/doctype/guardian/guardian.py
+++ b/erpnext/education/doctype/guardian/guardian.py
@@ -3,11 +3,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
 from frappe.utils.csvutils import getlink
 
+
 class Guardian(Document):
 	def __setup__(self):
 		self.onload()
diff --git a/erpnext/education/doctype/guardian/test_guardian.py b/erpnext/education/doctype/guardian/test_guardian.py
index 61420f6..446e261 100644
--- a/erpnext/education/doctype/guardian/test_guardian.py
+++ b/erpnext/education/doctype/guardian/test_guardian.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Guardian')
diff --git a/erpnext/education/doctype/guardian_interest/guardian_interest.py b/erpnext/education/doctype/guardian_interest/guardian_interest.py
index f5c4cf1..4a3040f 100644
--- a/erpnext/education/doctype/guardian_interest/guardian_interest.py
+++ b/erpnext/education/doctype/guardian_interest/guardian_interest.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class GuardianInterest(Document):
 	pass
diff --git a/erpnext/education/doctype/guardian_student/guardian_student.py b/erpnext/education/doctype/guardian_student/guardian_student.py
index bf6f5c1..62867d8 100644
--- a/erpnext/education/doctype/guardian_student/guardian_student.py
+++ b/erpnext/education/doctype/guardian_student/guardian_student.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class GuardianStudent(Document):
 	pass
diff --git a/erpnext/education/doctype/instructor/instructor.py b/erpnext/education/doctype/instructor/instructor.py
index b1bfcbb..92fb8b0 100644
--- a/erpnext/education/doctype/instructor/instructor.py
+++ b/erpnext/education/doctype/instructor/instructor.py
@@ -3,11 +3,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
 from frappe.model.naming import set_name_by_naming_series
 
+
 class Instructor(Document):
 	def autoname(self):
 		naming_method = frappe.db.get_value("Education Settings", None, "instructor_created_by")
diff --git a/erpnext/education/doctype/instructor/instructor_dashboard.py b/erpnext/education/doctype/instructor/instructor_dashboard.py
index c19c859..bb08a54 100644
--- a/erpnext/education/doctype/instructor/instructor_dashboard.py
+++ b/erpnext/education/doctype/instructor/instructor_dashboard.py
@@ -1,8 +1,10 @@
 # Copyright (c) 2020, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'heatmap': True,
diff --git a/erpnext/education/doctype/instructor/test_instructor.py b/erpnext/education/doctype/instructor/test_instructor.py
index 4061422..b698a20 100644
--- a/erpnext/education/doctype/instructor/test_instructor.py
+++ b/erpnext/education/doctype/instructor/test_instructor.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Instructor')
diff --git a/erpnext/education/doctype/instructor_log/instructor_log.py b/erpnext/education/doctype/instructor_log/instructor_log.py
index 75217b2..68ab7a6 100644
--- a/erpnext/education/doctype/instructor_log/instructor_log.py
+++ b/erpnext/education/doctype/instructor_log/instructor_log.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class InstructorLog(Document):
 	pass
diff --git a/erpnext/education/doctype/options/options.py b/erpnext/education/doctype/options/options.py
index a11d77a..a064384 100644
--- a/erpnext/education/doctype/options/options.py
+++ b/erpnext/education/doctype/options/options.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class Options(Document):
 	pass
diff --git a/erpnext/education/doctype/program/program.py b/erpnext/education/doctype/program/program.py
index 9d886b7..7de34cf 100644
--- a/erpnext/education/doctype/program/program.py
+++ b/erpnext/education/doctype/program/program.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 
+
 class Program(Document):
 
 	def get_course_list(self):
diff --git a/erpnext/education/doctype/program/program_dashboard.py b/erpnext/education/doctype/program/program_dashboard.py
index 6c503e1..6696076 100644
--- a/erpnext/education/doctype/program/program_dashboard.py
+++ b/erpnext/education/doctype/program/program_dashboard.py
@@ -1,5 +1,6 @@
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'program',
diff --git a/erpnext/education/doctype/program/test_program.py b/erpnext/education/doctype/program/test_program.py
index 204f296..3222aa6 100644
--- a/erpnext/education/doctype/program/test_program.py
+++ b/erpnext/education/doctype/program/test_program.py
@@ -2,12 +2,13 @@
 # Copyright (c) 2015, Frappe Technologies and Contributors
 # See license.txt
 from __future__ import unicode_literals
-from erpnext.education.doctype.course.test_course import make_course
-from erpnext.education.doctype.topic.test_topic import make_topic_and_linked_content
-from erpnext.education.doctype.course.test_course import make_course_and_linked_topic
+
+import unittest
 
 import frappe
-import unittest
+
+from erpnext.education.doctype.course.test_course import make_course, make_course_and_linked_topic
+from erpnext.education.doctype.topic.test_topic import make_topic_and_linked_content
 
 test_data = {
 	"program_name": "_Test Program",
diff --git a/erpnext/education/doctype/program_course/program_course.py b/erpnext/education/doctype/program_course/program_course.py
index 684b6fa..d5236a1 100644
--- a/erpnext/education/doctype/program_course/program_course.py
+++ b/erpnext/education/doctype/program_course/program_course.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ProgramCourse(Document):
 	pass
diff --git a/erpnext/education/doctype/program_enrollment/program_enrollment.py b/erpnext/education/doctype/program_enrollment/program_enrollment.py
index dd4aa57..79c5a14 100644
--- a/erpnext/education/doctype/program_enrollment/program_enrollment.py
+++ b/erpnext/education/doctype/program_enrollment/program_enrollment.py
@@ -3,12 +3,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe import msgprint, _
+from frappe import _, msgprint
+from frappe.desk.reportview import get_match_cond
 from frappe.model.document import Document
-from frappe.desk.reportview import get_match_cond, get_filters_cond
 from frappe.utils import comma_and, get_link_to_form, getdate
-import erpnext.www.lms as lms
+
 
 class ProgramEnrollment(Document):
 	def validate(self):
diff --git a/erpnext/education/doctype/program_enrollment/program_enrollment_dashboard.py b/erpnext/education/doctype/program_enrollment/program_enrollment_dashboard.py
index c47f866..f829276 100644
--- a/erpnext/education/doctype/program_enrollment/program_enrollment_dashboard.py
+++ b/erpnext/education/doctype/program_enrollment/program_enrollment_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'program_enrollment',
diff --git a/erpnext/education/doctype/program_enrollment/test_program_enrollment.py b/erpnext/education/doctype/program_enrollment/test_program_enrollment.py
index 497ee28..65de38a 100644
--- a/erpnext/education/doctype/program_enrollment/test_program_enrollment.py
+++ b/erpnext/education/doctype/program_enrollment/test_program_enrollment.py
@@ -3,13 +3,13 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
-from erpnext.education.doctype.student.test_student import create_student
-from erpnext.education.doctype.student.test_student import get_student
+import frappe
+
 from erpnext.education.doctype.program.test_program import make_program_and_linked_courses
-from erpnext.education.doctype.course_activity.test_course_activity import make_course_activity
+from erpnext.education.doctype.student.test_student import create_student, get_student
+
 
 class TestProgramEnrollment(unittest.TestCase):
 
diff --git a/erpnext/education/doctype/program_enrollment_course/program_enrollment_course.py b/erpnext/education/doctype/program_enrollment_course/program_enrollment_course.py
index e1f564e..5c0706d 100644
--- a/erpnext/education/doctype/program_enrollment_course/program_enrollment_course.py
+++ b/erpnext/education/doctype/program_enrollment_course/program_enrollment_course.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ProgramEnrollmentCourse(Document):
 	pass
diff --git a/erpnext/education/doctype/program_enrollment_fee/program_enrollment_fee.py b/erpnext/education/doctype/program_enrollment_fee/program_enrollment_fee.py
index 03a311e..53bae7c 100644
--- a/erpnext/education/doctype/program_enrollment_fee/program_enrollment_fee.py
+++ b/erpnext/education/doctype/program_enrollment_fee/program_enrollment_fee.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ProgramEnrollmentFee(Document):
 	pass
diff --git a/erpnext/education/doctype/program_enrollment_tool/program_enrollment_tool.py b/erpnext/education/doctype/program_enrollment_tool/program_enrollment_tool.py
index 5833b67..69fa665 100644
--- a/erpnext/education/doctype/program_enrollment_tool/program_enrollment_tool.py
+++ b/erpnext/education/doctype/program_enrollment_tool/program_enrollment_tool.py
@@ -3,12 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
-from erpnext.education.api import enroll_student
 from frappe.utils import cint
 
+from erpnext.education.api import enroll_student
+
+
 class ProgramEnrollmentTool(Document):
 	def onload(self):
 		academic_term_reqd = cint(frappe.db.get_single_value('Education Settings', 'academic_term_reqd'))
diff --git a/erpnext/education/doctype/program_enrollment_tool/test_program_enrollment_tool.py b/erpnext/education/doctype/program_enrollment_tool/test_program_enrollment_tool.py
index f22b3b1..55734cb 100644
--- a/erpnext/education/doctype/program_enrollment_tool/test_program_enrollment_tool.py
+++ b/erpnext/education/doctype/program_enrollment_tool/test_program_enrollment_tool.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestProgramEnrollmentTool(unittest.TestCase):
 	pass
diff --git a/erpnext/education/doctype/program_enrollment_tool_student/program_enrollment_tool_student.py b/erpnext/education/doctype/program_enrollment_tool_student/program_enrollment_tool_student.py
index 38dc1c8..6765345 100644
--- a/erpnext/education/doctype/program_enrollment_tool_student/program_enrollment_tool_student.py
+++ b/erpnext/education/doctype/program_enrollment_tool_student/program_enrollment_tool_student.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ProgramEnrollmentToolStudent(Document):
 	pass
diff --git a/erpnext/education/doctype/program_fee/program_fee.py b/erpnext/education/doctype/program_fee/program_fee.py
index cadcc4e..70105ee 100644
--- a/erpnext/education/doctype/program_fee/program_fee.py
+++ b/erpnext/education/doctype/program_fee/program_fee.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ProgramFee(Document):
 	pass
diff --git a/erpnext/education/doctype/question/question.py b/erpnext/education/doctype/question/question.py
index fb3b504..e74aa93 100644
--- a/erpnext/education/doctype/question/question.py
+++ b/erpnext/education/doctype/question/question.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
 
+
 class Question(Document):
 
 	def validate(self):
diff --git a/erpnext/education/doctype/question/test_question.py b/erpnext/education/doctype/question/test_question.py
index 552872e..1ce10c0 100644
--- a/erpnext/education/doctype/question/test_question.py
+++ b/erpnext/education/doctype/question/test_question.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestQuestion(unittest.TestCase):
 	pass
diff --git a/erpnext/education/doctype/quiz/quiz.py b/erpnext/education/doctype/quiz/quiz.py
index a128e1f..474bea1 100644
--- a/erpnext/education/doctype/quiz/quiz.py
+++ b/erpnext/education/doctype/quiz/quiz.py
@@ -3,11 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-import json
 from frappe import _
 from frappe.model.document import Document
 
+
 class Quiz(Document):
 	def validate(self):
 		if self.passing_score > 100:
diff --git a/erpnext/education/doctype/quiz/test_quiz.py b/erpnext/education/doctype/quiz/test_quiz.py
index 344fd54..22eb23d 100644
--- a/erpnext/education/doctype/quiz/test_quiz.py
+++ b/erpnext/education/doctype/quiz/test_quiz.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestQuiz(unittest.TestCase):
 	pass
diff --git a/erpnext/education/doctype/quiz_activity/quiz_activity.py b/erpnext/education/doctype/quiz_activity/quiz_activity.py
index 24c7175..0fc7603 100644
--- a/erpnext/education/doctype/quiz_activity/quiz_activity.py
+++ b/erpnext/education/doctype/quiz_activity/quiz_activity.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class QuizActivity(Document):
 	pass
diff --git a/erpnext/education/doctype/quiz_activity/test_quiz_activity.py b/erpnext/education/doctype/quiz_activity/test_quiz_activity.py
index fb0425d..44e3a3f 100644
--- a/erpnext/education/doctype/quiz_activity/test_quiz_activity.py
+++ b/erpnext/education/doctype/quiz_activity/test_quiz_activity.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestQuizActivity(unittest.TestCase):
 	pass
diff --git a/erpnext/education/doctype/quiz_question/quiz_question.py b/erpnext/education/doctype/quiz_question/quiz_question.py
index 317e75b..20cb9f7 100644
--- a/erpnext/education/doctype/quiz_question/quiz_question.py
+++ b/erpnext/education/doctype/quiz_question/quiz_question.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class QuizQuestion(Document):
 	pass
diff --git a/erpnext/education/doctype/quiz_result/quiz_result.py b/erpnext/education/doctype/quiz_result/quiz_result.py
index a4fd9f0..059d294 100644
--- a/erpnext/education/doctype/quiz_result/quiz_result.py
+++ b/erpnext/education/doctype/quiz_result/quiz_result.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class QuizResult(Document):
 	pass
diff --git a/erpnext/education/doctype/quiz_result/test_quiz_result.py b/erpnext/education/doctype/quiz_result/test_quiz_result.py
index 86ee52d..08ac481 100644
--- a/erpnext/education/doctype/quiz_result/test_quiz_result.py
+++ b/erpnext/education/doctype/quiz_result/test_quiz_result.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestQuizResult(unittest.TestCase):
 	pass
diff --git a/erpnext/education/doctype/room/room.py b/erpnext/education/doctype/room/room.py
index f26e9c4..dc68a0d 100644
--- a/erpnext/education/doctype/room/room.py
+++ b/erpnext/education/doctype/room/room.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class Room(Document):
 	pass
diff --git a/erpnext/education/doctype/room/room_dashboard.py b/erpnext/education/doctype/room/room_dashboard.py
index 7bcb97f..6a43b60 100644
--- a/erpnext/education/doctype/room/room_dashboard.py
+++ b/erpnext/education/doctype/room/room_dashboard.py
@@ -1,8 +1,10 @@
 # Copyright (c) 2020, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'room',
diff --git a/erpnext/education/doctype/room/test_room.py b/erpnext/education/doctype/room/test_room.py
index 33ffd91..5718d51 100644
--- a/erpnext/education/doctype/room/test_room.py
+++ b/erpnext/education/doctype/room/test_room.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Room')
diff --git a/erpnext/education/doctype/school_house/school_house.py b/erpnext/education/doctype/school_house/school_house.py
index 8751e5c..2f9c5f4 100644
--- a/erpnext/education/doctype/school_house/school_house.py
+++ b/erpnext/education/doctype/school_house/school_house.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class SchoolHouse(Document):
 	pass
diff --git a/erpnext/education/doctype/school_house/test_school_house.py b/erpnext/education/doctype/school_house/test_school_house.py
index 5cf96d5..b58b7d4 100644
--- a/erpnext/education/doctype/school_house/test_school_house.py
+++ b/erpnext/education/doctype/school_house/test_school_house.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestSchoolHouse(unittest.TestCase):
 	pass
diff --git a/erpnext/education/doctype/student/student.py b/erpnext/education/doctype/student/student.py
index 6be9e71..ae498ba 100644
--- a/erpnext/education/doctype/student/student.py
+++ b/erpnext/education/doctype/student/student.py
@@ -3,12 +3,16 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.document import Document
-from frappe.utils import getdate,today
 from frappe import _
 from frappe.desk.form.linked_with import get_linked_doctypes
+from frappe.model.document import Document
+from frappe.utils import getdate, today
+
 from erpnext.education.utils import check_content_completion, check_quiz_completion
+
+
 class Student(Document):
 	def validate(self):
 		self.title = " ".join(filter(None, [self.first_name, self.middle_name, self.last_name]))
diff --git a/erpnext/education/doctype/student/student_dashboard.py b/erpnext/education/doctype/student/student_dashboard.py
index d261462..efff2e6 100644
--- a/erpnext/education/doctype/student/student_dashboard.py
+++ b/erpnext/education/doctype/student/student_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'heatmap': True,
diff --git a/erpnext/education/doctype/student/test_student.py b/erpnext/education/doctype/student/test_student.py
index fcb2b5f..ec6abb5 100644
--- a/erpnext/education/doctype/student/test_student.py
+++ b/erpnext/education/doctype/student/test_student.py
@@ -2,12 +2,12 @@
 # Copyright (c) 2015, Frappe Technologies and Contributors
 # See license.txt
 from __future__ import unicode_literals
-from frappe.test_runner import make_test_records
-from erpnext.education.doctype.program.test_program import make_program_and_linked_courses
-from erpnext.education.doctype.course.test_course import make_course
+
+import unittest
 
 import frappe
-import unittest
+
+from erpnext.education.doctype.program.test_program import make_program_and_linked_courses
 
 test_records = frappe.get_test_records('Student')
 class TestStudent(unittest.TestCase):
diff --git a/erpnext/education/doctype/student_admission/student_admission.py b/erpnext/education/doctype/student_admission/student_admission.py
index 0febb96..67ef67b 100644
--- a/erpnext/education/doctype/student_admission/student_admission.py
+++ b/erpnext/education/doctype/student_admission/student_admission.py
@@ -3,6 +3,7 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import nowdate
diff --git a/erpnext/education/doctype/student_admission/test_student_admission.py b/erpnext/education/doctype/student_admission/test_student_admission.py
index 748c7ae..c9cfbca 100644
--- a/erpnext/education/doctype/student_admission/test_student_admission.py
+++ b/erpnext/education/doctype/student_admission/test_student_admission.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Student Admission')
diff --git a/erpnext/education/doctype/student_admission_program/student_admission_program.py b/erpnext/education/doctype/student_admission_program/student_admission_program.py
index 406027c..2377d26 100644
--- a/erpnext/education/doctype/student_admission_program/student_admission_program.py
+++ b/erpnext/education/doctype/student_admission_program/student_admission_program.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class StudentAdmissionProgram(Document):
 	pass
diff --git a/erpnext/education/doctype/student_applicant/student_applicant.py b/erpnext/education/doctype/student_applicant/student_applicant.py
index 193b6d3..36a0757 100644
--- a/erpnext/education/doctype/student_applicant/student_applicant.py
+++ b/erpnext/education/doctype/student_applicant/student_applicant.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import print_function, unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
-from frappe.utils import getdate, add_years, nowdate, date_diff
+from frappe.utils import add_years, date_diff, getdate, nowdate
+
 
 class StudentApplicant(Document):
 	def autoname(self):
diff --git a/erpnext/education/doctype/student_applicant/test_student_applicant.py b/erpnext/education/doctype/student_applicant/test_student_applicant.py
index 9734a88..b7258a4 100644
--- a/erpnext/education/doctype/student_applicant/test_student_applicant.py
+++ b/erpnext/education/doctype/student_applicant/test_student_applicant.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Student Applicant')
diff --git a/erpnext/education/doctype/student_attendance/student_attendance.py b/erpnext/education/doctype/student_attendance/student_attendance.py
index 2e9e6cf..3826afb 100644
--- a/erpnext/education/doctype/student_attendance/student_attendance.py
+++ b/erpnext/education/doctype/student_attendance/student_attendance.py
@@ -3,14 +3,17 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.document import Document
 from frappe import _
-from frappe.utils import get_link_to_form, getdate, formatdate
+from frappe.model.document import Document
+from frappe.utils import formatdate, get_link_to_form, getdate
+
 from erpnext import get_default_company
 from erpnext.education.api import get_student_group_students
 from erpnext.hr.doctype.holiday_list.holiday_list import is_holiday
 
+
 class StudentAttendance(Document):
 	def validate(self):
 		self.validate_mandatory()
diff --git a/erpnext/education/doctype/student_attendance/student_attendance_dashboard.py b/erpnext/education/doctype/student_attendance/student_attendance_dashboard.py
index e405b8a..489f64d 100644
--- a/erpnext/education/doctype/student_attendance/student_attendance_dashboard.py
+++ b/erpnext/education/doctype/student_attendance/student_attendance_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'reports': [
diff --git a/erpnext/education/doctype/student_attendance/test_student_attendance.py b/erpnext/education/doctype/student_attendance/test_student_attendance.py
index 9f41538..d453aed 100644
--- a/erpnext/education/doctype/student_attendance/test_student_attendance.py
+++ b/erpnext/education/doctype/student_attendance/test_student_attendance.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Student Attendance')
diff --git a/erpnext/education/doctype/student_attendance_tool/student_attendance_tool.py b/erpnext/education/doctype/student_attendance_tool/student_attendance_tool.py
index 972973f..96767de 100644
--- a/erpnext/education/doctype/student_attendance_tool/student_attendance_tool.py
+++ b/erpnext/education/doctype/student_attendance_tool/student_attendance_tool.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 
+
 class StudentAttendanceTool(Document):
 	pass
 
diff --git a/erpnext/education/doctype/student_attendance_tool/test_student_attendance_tool.py b/erpnext/education/doctype/student_attendance_tool/test_student_attendance_tool.py
index ffc42af..a94a3f2 100644
--- a/erpnext/education/doctype/student_attendance_tool/test_student_attendance_tool.py
+++ b/erpnext/education/doctype/student_attendance_tool/test_student_attendance_tool.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestStudentAttendanceTool(unittest.TestCase):
 	pass
diff --git a/erpnext/education/doctype/student_batch_name/student_batch_name.py b/erpnext/education/doctype/student_batch_name/student_batch_name.py
index e6d38ea..ce50716 100644
--- a/erpnext/education/doctype/student_batch_name/student_batch_name.py
+++ b/erpnext/education/doctype/student_batch_name/student_batch_name.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class StudentBatchName(Document):
 	pass
diff --git a/erpnext/education/doctype/student_batch_name/test_student_batch_name.py b/erpnext/education/doctype/student_batch_name/test_student_batch_name.py
index 09534f3..75ebeb2 100644
--- a/erpnext/education/doctype/student_batch_name/test_student_batch_name.py
+++ b/erpnext/education/doctype/student_batch_name/test_student_batch_name.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Student Batch Name')
diff --git a/erpnext/education/doctype/student_category/student_category.py b/erpnext/education/doctype/student_category/student_category.py
index bd3a835..bb362d5 100644
--- a/erpnext/education/doctype/student_category/student_category.py
+++ b/erpnext/education/doctype/student_category/student_category.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class StudentCategory(Document):
 	pass
diff --git a/erpnext/education/doctype/student_category/student_category_dashboard.py b/erpnext/education/doctype/student_category/student_category_dashboard.py
index f31c34b..9238623 100644
--- a/erpnext/education/doctype/student_category/student_category_dashboard.py
+++ b/erpnext/education/doctype/student_category/student_category_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'student_category',
diff --git a/erpnext/education/doctype/student_category/test_student_category.py b/erpnext/education/doctype/student_category/test_student_category.py
index 756cab8..0893769 100644
--- a/erpnext/education/doctype/student_category/test_student_category.py
+++ b/erpnext/education/doctype/student_category/test_student_category.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Student Category')
diff --git a/erpnext/education/doctype/student_group/student_group.py b/erpnext/education/doctype/student_group/student_group.py
index 3d4572a..2347d31 100644
--- a/erpnext/education/doctype/student_group/student_group.py
+++ b/erpnext/education/doctype/student_group/student_group.py
@@ -3,12 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.document import Document
 from frappe import _
-from erpnext.education.utils import validate_duplicate_student
+from frappe.model.document import Document
 from frappe.utils import cint
 
+from erpnext.education.utils import validate_duplicate_student
+
+
 class StudentGroup(Document):
 	def validate(self):
 		self.validate_mandatory_fields()
diff --git a/erpnext/education/doctype/student_group/student_group_dashboard.py b/erpnext/education/doctype/student_group/student_group_dashboard.py
index d37445f..36329bd 100644
--- a/erpnext/education/doctype/student_group/student_group_dashboard.py
+++ b/erpnext/education/doctype/student_group/student_group_dashboard.py
@@ -1,8 +1,10 @@
 # Copyright (c) 2020, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'student_group',
diff --git a/erpnext/education/doctype/student_group/test_student_group.py b/erpnext/education/doctype/student_group/test_student_group.py
index 8b9b47d..0602251 100644
--- a/erpnext/education/doctype/student_group/test_student_group.py
+++ b/erpnext/education/doctype/student_group/test_student_group.py
@@ -3,10 +3,13 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
+import frappe
+
 import erpnext.education
 
+
 def get_random_group():
 	doc = frappe.get_doc({
 		"doctype": "Student Group",
diff --git a/erpnext/education/doctype/student_group_creation_tool/student_group_creation_tool.py b/erpnext/education/doctype/student_group_creation_tool/student_group_creation_tool.py
index 28ff7d6..2007f8a 100644
--- a/erpnext/education/doctype/student_group_creation_tool/student_group_creation_tool.py
+++ b/erpnext/education/doctype/student_group_creation_tool/student_group_creation_tool.py
@@ -3,11 +3,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
+
 from erpnext.education.doctype.student_group.student_group import get_students
 
+
 class StudentGroupCreationTool(Document):
 	@frappe.whitelist()
 	def get_courses(self):
diff --git a/erpnext/education/doctype/student_group_creation_tool/test_student_group_creation_tool.py b/erpnext/education/doctype/student_group_creation_tool/test_student_group_creation_tool.py
index 9ca5658..432da09 100644
--- a/erpnext/education/doctype/student_group_creation_tool/test_student_group_creation_tool.py
+++ b/erpnext/education/doctype/student_group_creation_tool/test_student_group_creation_tool.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestStudentGroupCreationTool(unittest.TestCase):
 	pass
diff --git a/erpnext/education/doctype/student_group_creation_tool_course/student_group_creation_tool_course.py b/erpnext/education/doctype/student_group_creation_tool_course/student_group_creation_tool_course.py
index b3411ea..b9d1e0d 100644
--- a/erpnext/education/doctype/student_group_creation_tool_course/student_group_creation_tool_course.py
+++ b/erpnext/education/doctype/student_group_creation_tool_course/student_group_creation_tool_course.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class StudentGroupCreationToolCourse(Document):
 	pass
diff --git a/erpnext/education/doctype/student_group_instructor/student_group_instructor.py b/erpnext/education/doctype/student_group_instructor/student_group_instructor.py
index b6cc588..81a7ed2 100644
--- a/erpnext/education/doctype/student_group_instructor/student_group_instructor.py
+++ b/erpnext/education/doctype/student_group_instructor/student_group_instructor.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class StudentGroupInstructor(Document):
 	pass
diff --git a/erpnext/education/doctype/student_group_student/student_group_student.py b/erpnext/education/doctype/student_group_student/student_group_student.py
index 1fe4ea1..7ee4cae 100644
--- a/erpnext/education/doctype/student_group_student/student_group_student.py
+++ b/erpnext/education/doctype/student_group_student/student_group_student.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class StudentGroupStudent(Document):
 	pass
diff --git a/erpnext/education/doctype/student_guardian/student_guardian.py b/erpnext/education/doctype/student_guardian/student_guardian.py
index 04445bc..56d7df7 100644
--- a/erpnext/education/doctype/student_guardian/student_guardian.py
+++ b/erpnext/education/doctype/student_guardian/student_guardian.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class StudentGuardian(Document):
 	pass
diff --git a/erpnext/education/doctype/student_language/student_language.py b/erpnext/education/doctype/student_language/student_language.py
index be6d5de..6ec0b1f 100644
--- a/erpnext/education/doctype/student_language/student_language.py
+++ b/erpnext/education/doctype/student_language/student_language.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class StudentLanguage(Document):
 	pass
diff --git a/erpnext/education/doctype/student_language/test_student_language.py b/erpnext/education/doctype/student_language/test_student_language.py
index 592b94a..1d7c003 100644
--- a/erpnext/education/doctype/student_language/test_student_language.py
+++ b/erpnext/education/doctype/student_language/test_student_language.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Student Language')
diff --git a/erpnext/education/doctype/student_leave_application/student_leave_application.py b/erpnext/education/doctype/student_leave_application/student_leave_application.py
index ef67012..50c14aa 100644
--- a/erpnext/education/doctype/student_leave_application/student_leave_application.py
+++ b/erpnext/education/doctype/student_leave_application/student_leave_application.py
@@ -3,13 +3,17 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
+from datetime import timedelta
+
 import frappe
 from frappe import _
-from datetime import timedelta
-from frappe.utils import get_link_to_form, getdate, date_diff, flt
-from erpnext.hr.doctype.holiday_list.holiday_list import is_holiday
-from erpnext.education.doctype.student_attendance.student_attendance import get_holiday_list
 from frappe.model.document import Document
+from frappe.utils import date_diff, flt, get_link_to_form, getdate
+
+from erpnext.education.doctype.student_attendance.student_attendance import get_holiday_list
+from erpnext.hr.doctype.holiday_list.holiday_list import is_holiday
+
 
 class StudentLeaveApplication(Document):
 	def validate(self):
diff --git a/erpnext/education/doctype/student_leave_application/student_leave_application_dashboard.py b/erpnext/education/doctype/student_leave_application/student_leave_application_dashboard.py
index 0ff6d1a..2674f54 100644
--- a/erpnext/education/doctype/student_leave_application/student_leave_application_dashboard.py
+++ b/erpnext/education/doctype/student_leave_application/student_leave_application_dashboard.py
@@ -1,5 +1,6 @@
 from __future__ import unicode_literals
 
+
 def get_data():
 	return {
 		'fieldname': 'leave_application',
diff --git a/erpnext/education/doctype/student_leave_application/test_student_leave_application.py b/erpnext/education/doctype/student_leave_application/test_student_leave_application.py
index 9cae257..506dc73 100644
--- a/erpnext/education/doctype/student_leave_application/test_student_leave_application.py
+++ b/erpnext/education/doctype/student_leave_application/test_student_leave_application.py
@@ -3,12 +3,15 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import getdate, add_days, add_months
+
+import frappe
+from frappe.utils import add_days, add_months, getdate
+
 from erpnext import get_default_company
-from erpnext.education.doctype.student_group.test_student_group import get_random_group
 from erpnext.education.doctype.student.test_student import create_student
+from erpnext.education.doctype.student_group.test_student_group import get_random_group
+
 
 class TestStudentLeaveApplication(unittest.TestCase):
 	def setUp(self):
diff --git a/erpnext/education/doctype/student_log/student_log.py b/erpnext/education/doctype/student_log/student_log.py
index 8b12886..2ca49ca 100644
--- a/erpnext/education/doctype/student_log/student_log.py
+++ b/erpnext/education/doctype/student_log/student_log.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class StudentLog(Document):
 	pass
diff --git a/erpnext/education/doctype/student_log/test_student_log.py b/erpnext/education/doctype/student_log/test_student_log.py
index 1fe191f..533191f 100644
--- a/erpnext/education/doctype/student_log/test_student_log.py
+++ b/erpnext/education/doctype/student_log/test_student_log.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Student Log')
diff --git a/erpnext/education/doctype/student_report_generation_tool/student_report_generation_tool.py b/erpnext/education/doctype/student_report_generation_tool/student_report_generation_tool.py
index 17bc367..1cf7921 100644
--- a/erpnext/education/doctype/student_report_generation_tool/student_report_generation_tool.py
+++ b/erpnext/education/doctype/student_report_generation_tool/student_report_generation_tool.py
@@ -3,13 +3,18 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, json
+
+import json
+
+import frappe
 from frappe import _
 from frappe.model.document import Document
-from erpnext.education.api import get_grade
 from frappe.utils.pdf import get_pdf
-from erpnext.education.report.course_wise_assessment_report.course_wise_assessment_report import get_formatted_result
-from erpnext.education.report.course_wise_assessment_report.course_wise_assessment_report import get_child_assessment_groups
+
+from erpnext.education.report.course_wise_assessment_report.course_wise_assessment_report import (
+	get_child_assessment_groups,
+	get_formatted_result,
+)
 
 
 class StudentReportGenerationTool(Document):
diff --git a/erpnext/education/doctype/student_report_generation_tool/test_student_report_generation_tool.py b/erpnext/education/doctype/student_report_generation_tool/test_student_report_generation_tool.py
index 4178166..f622713 100644
--- a/erpnext/education/doctype/student_report_generation_tool/test_student_report_generation_tool.py
+++ b/erpnext/education/doctype/student_report_generation_tool/test_student_report_generation_tool.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestStudentReportGenerationTool(unittest.TestCase):
 	pass
diff --git a/erpnext/education/doctype/student_sibling/student_sibling.py b/erpnext/education/doctype/student_sibling/student_sibling.py
index 4adc3f3..b36cf59 100644
--- a/erpnext/education/doctype/student_sibling/student_sibling.py
+++ b/erpnext/education/doctype/student_sibling/student_sibling.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class StudentSibling(Document):
 	pass
diff --git a/erpnext/education/doctype/student_siblings/student_siblings.py b/erpnext/education/doctype/student_siblings/student_siblings.py
index 4e20d84..412cf05 100644
--- a/erpnext/education/doctype/student_siblings/student_siblings.py
+++ b/erpnext/education/doctype/student_siblings/student_siblings.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class StudentSiblings(Document):
 	pass
diff --git a/erpnext/education/doctype/topic/test_topic.py b/erpnext/education/doctype/topic/test_topic.py
index d03db1c..b6c6c75 100644
--- a/erpnext/education/doctype/topic/test_topic.py
+++ b/erpnext/education/doctype/topic/test_topic.py
@@ -3,9 +3,11 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
+
 class TestTopic(unittest.TestCase):
 	def setUp(self):
 		make_topic_and_linked_content("_Test Topic 1", [{"type":"Article", "name": "_Test Article 1"}])
diff --git a/erpnext/education/doctype/topic/topic.py b/erpnext/education/doctype/topic/topic.py
index fb680d7..1834b2e 100644
--- a/erpnext/education/doctype/topic/topic.py
+++ b/erpnext/education/doctype/topic/topic.py
@@ -3,11 +3,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import json
+
+import frappe
 from frappe import _
 from frappe.model.document import Document
 
+
 class Topic(Document):
 	def get_contents(self):
 		try:
diff --git a/erpnext/education/doctype/topic_content/test_topic_content.py b/erpnext/education/doctype/topic_content/test_topic_content.py
index cf304f6..6fdcbda 100644
--- a/erpnext/education/doctype/topic_content/test_topic_content.py
+++ b/erpnext/education/doctype/topic_content/test_topic_content.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestTopicContent(unittest.TestCase):
 	pass
diff --git a/erpnext/education/doctype/topic_content/topic_content.py b/erpnext/education/doctype/topic_content/topic_content.py
index 9b2c90b..9339bbd 100644
--- a/erpnext/education/doctype/topic_content/topic_content.py
+++ b/erpnext/education/doctype/topic_content/topic_content.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class TopicContent(Document):
 	pass
diff --git a/erpnext/education/report/absent_student_report/absent_student_report.py b/erpnext/education/report/absent_student_report/absent_student_report.py
index c3487cc..d5b6675 100644
--- a/erpnext/education/report/absent_student_report/absent_student_report.py
+++ b/erpnext/education/report/absent_student_report/absent_student_report.py
@@ -2,12 +2,15 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
+from frappe import _, msgprint
 from frappe.utils import formatdate
-from frappe import msgprint, _
+
 from erpnext.education.doctype.student_attendance.student_attendance import get_holiday_list
 from erpnext.hr.doctype.holiday_list.holiday_list import is_holiday
 
+
 def execute(filters=None):
 	if not filters: filters = {}
 
diff --git a/erpnext/education/report/assessment_plan_status/assessment_plan_status.py b/erpnext/education/report/assessment_plan_status/assessment_plan_status.py
index 21184a6..64ceb42 100644
--- a/erpnext/education/report/assessment_plan_status/assessment_plan_status.py
+++ b/erpnext/education/report/assessment_plan_status/assessment_plan_status.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
+from itertools import groupby
+
 import frappe
 from frappe import _
-from itertools import groupby
 from frappe.utils import cint
 
 DOCSTATUS = {
diff --git a/erpnext/education/report/course_wise_assessment_report/course_wise_assessment_report.py b/erpnext/education/report/course_wise_assessment_report/course_wise_assessment_report.py
index 1043e5b..ad07ee1 100644
--- a/erpnext/education/report/course_wise_assessment_report/course_wise_assessment_report.py
+++ b/erpnext/education/report/course_wise_assessment_report/course_wise_assessment_report.py
@@ -2,10 +2,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
+from collections import OrderedDict, defaultdict
+
 import frappe
 from frappe import _
-from frappe.utils import flt
-from collections import defaultdict, OrderedDict
+
 from erpnext.education.api import get_grade
 
 
diff --git a/erpnext/education/report/final_assessment_grades/final_assessment_grades.py b/erpnext/education/report/final_assessment_grades/final_assessment_grades.py
index e6e0ba2..ae7f34b 100644
--- a/erpnext/education/report/final_assessment_grades/final_assessment_grades.py
+++ b/erpnext/education/report/final_assessment_grades/final_assessment_grades.py
@@ -2,12 +2,16 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe import _
+
 from collections import defaultdict
 
-from erpnext.education.report.course_wise_assessment_report.course_wise_assessment_report import get_formatted_result
-from erpnext.education.report.course_wise_assessment_report.course_wise_assessment_report import get_chart_data
+import frappe
+from frappe import _
+
+from erpnext.education.report.course_wise_assessment_report.course_wise_assessment_report import (
+	get_chart_data,
+	get_formatted_result,
+)
 
 
 def execute(filters=None):
diff --git a/erpnext/education/report/program_wise_fee_collection/program_wise_fee_collection.py b/erpnext/education/report/program_wise_fee_collection/program_wise_fee_collection.py
index c0ec035..1717ed5 100644
--- a/erpnext/education/report/program_wise_fee_collection/program_wise_fee_collection.py
+++ b/erpnext/education/report/program_wise_fee_collection/program_wise_fee_collection.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 def execute(filters=None):
 	if not filters:
 		filters = {}
diff --git a/erpnext/education/report/student_and_guardian_contact_details/student_and_guardian_contact_details.py b/erpnext/education/report/student_and_guardian_contact_details/student_and_guardian_contact_details.py
index 5bebd43..a21a936 100644
--- a/erpnext/education/report/student_and_guardian_contact_details/student_and_guardian_contact_details.py
+++ b/erpnext/education/report/student_and_guardian_contact_details/student_and_guardian_contact_details.py
@@ -2,6 +2,7 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
diff --git a/erpnext/education/report/student_batch_wise_attendance/student_batch_wise_attendance.py b/erpnext/education/report/student_batch_wise_attendance/student_batch_wise_attendance.py
index e2576a0..b65350f 100644
--- a/erpnext/education/report/student_batch_wise_attendance/student_batch_wise_attendance.py
+++ b/erpnext/education/report/student_batch_wise_attendance/student_batch_wise_attendance.py
@@ -2,12 +2,15 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
+from frappe import _, msgprint
 from frappe.utils import formatdate
-from frappe import msgprint, _
+
 from erpnext.education.doctype.student_attendance.student_attendance import get_holiday_list
 from erpnext.hr.doctype.holiday_list.holiday_list import is_holiday
 
+
 def execute(filters=None):
 	if not filters: filters = {}
 
diff --git a/erpnext/education/report/student_monthly_attendance_sheet/student_monthly_attendance_sheet.py b/erpnext/education/report/student_monthly_attendance_sheet/student_monthly_attendance_sheet.py
index 04dc8c0..f6d9c5a 100644
--- a/erpnext/education/report/student_monthly_attendance_sheet/student_monthly_attendance_sheet.py
+++ b/erpnext/education/report/student_monthly_attendance_sheet/student_monthly_attendance_sheet.py
@@ -2,14 +2,16 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import cstr, cint, getdate, get_first_day, get_last_day, date_diff, add_days
-from frappe import msgprint, _
-from calendar import monthrange
+from frappe import _
+from frappe.utils import add_days, cstr, date_diff, get_first_day, get_last_day, getdate
+
 from erpnext.education.api import get_student_group_students
 from erpnext.education.doctype.student_attendance.student_attendance import get_holiday_list
 from erpnext.support.doctype.issue.issue import get_holidays
 
+
 def execute(filters=None):
 	if not filters: filters = {}
 
diff --git a/erpnext/education/utils.py b/erpnext/education/utils.py
index 7ce8212..33394e1 100644
--- a/erpnext/education/utils.py
+++ b/erpnext/education/utils.py
@@ -1,10 +1,12 @@
 # -*- coding: utf-8 -*-
 # Copyright (c) 2015, Frappe Technologies and contributors
 
-from __future__ import unicode_literals, division
+from __future__ import division, unicode_literals
+
 import frappe
 from frappe import _
 
+
 class OverlapError(frappe.ValidationError): pass
 
 def validate_overlap_for(doc, doctype, fieldname, value=None):
diff --git a/erpnext/education/web_form/student_applicant/student_applicant.py b/erpnext/education/web_form/student_applicant/student_applicant.py
index 2334f8b..f57de91 100644
--- a/erpnext/education/web_form/student_applicant/student_applicant.py
+++ b/erpnext/education/web_form/student_applicant/student_applicant.py
@@ -1,6 +1,5 @@
 from __future__ import unicode_literals
 
-import frappe
 
 def get_context(context):
 	# do your magic here
diff --git a/erpnext/erpnext_integrations/connectors/woocommerce_connection.py b/erpnext/erpnext_integrations/connectors/woocommerce_connection.py
index a505ee0..192ec14 100644
--- a/erpnext/erpnext_integrations/connectors/woocommerce_connection.py
+++ b/erpnext/erpnext_integrations/connectors/woocommerce_connection.py
@@ -1,8 +1,15 @@
 
 from __future__ import unicode_literals
-import frappe, base64, hashlib, hmac, json
-from frappe.utils import cstr
+
+import base64
+import hashlib
+import hmac
+import json
+
+import frappe
 from frappe import _
+from frappe.utils import cstr
+
 
 def verify_request():
 	woocommerce_settings = frappe.get_doc("Woocommerce Settings")
diff --git a/erpnext/erpnext_integrations/data_migration_mapping/issue_to_task/__init__.py b/erpnext/erpnext_integrations/data_migration_mapping/issue_to_task/__init__.py
index aeb5352..5a4a57c 100644
--- a/erpnext/erpnext_integrations/data_migration_mapping/issue_to_task/__init__.py
+++ b/erpnext/erpnext_integrations/data_migration_mapping/issue_to_task/__init__.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def pre_process(issue):
 
 	project = frappe.db.get_value('Project', filters={'project_name': issue.milestone})
diff --git a/erpnext/erpnext_integrations/data_migration_mapping/milestone_to_project/__init__.py b/erpnext/erpnext_integrations/data_migration_mapping/milestone_to_project/__init__.py
index 9d3f02e..bab8031 100644
--- a/erpnext/erpnext_integrations/data_migration_mapping/milestone_to_project/__init__.py
+++ b/erpnext/erpnext_integrations/data_migration_mapping/milestone_to_project/__init__.py
@@ -1,5 +1,6 @@
 from __future__ import unicode_literals
 
+
 def pre_process(milestone):
 	return {
 		'title': milestone.title,
diff --git a/erpnext/erpnext_integrations/doctype/amazon_mws_settings/amazon_methods.py b/erpnext/erpnext_integrations/doctype/amazon_mws_settings/amazon_methods.py
index 148c1a6..a757a43 100644
--- a/erpnext/erpnext_integrations/doctype/amazon_mws_settings/amazon_methods.py
+++ b/erpnext/erpnext_integrations/doctype/amazon_mws_settings/amazon_methods.py
@@ -3,10 +3,18 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, time, dateutil, math, csv
-from six import StringIO
-import erpnext.erpnext_integrations.doctype.amazon_mws_settings.amazon_mws_api as mws
+
+import csv
+import math
+import time
+
+import dateutil
+import frappe
 from frappe import _
+from six import StringIO
+
+import erpnext.erpnext_integrations.doctype.amazon_mws_settings.amazon_mws_api as mws
+
 
 #Get and Create Products
 def get_products_details():
diff --git a/erpnext/erpnext_integrations/doctype/amazon_mws_settings/amazon_mws_api.py b/erpnext/erpnext_integrations/doctype/amazon_mws_settings/amazon_mws_api.py
index 7fd3b34..652fa92 100755
--- a/erpnext/erpnext_integrations/doctype/amazon_mws_settings/amazon_mws_api.py
+++ b/erpnext/erpnext_integrations/doctype/amazon_mws_settings/amazon_mws_api.py
@@ -6,24 +6,24 @@
 # Extended to include finances object
 from __future__ import unicode_literals
 
-import urllib
-from urllib.parse import quote
+import base64
 import hashlib
 import hmac
-import base64
-import six
-from erpnext.erpnext_integrations.doctype.amazon_mws_settings import xml_utils
 import re
+from urllib.parse import quote
+
+from erpnext.erpnext_integrations.doctype.amazon_mws_settings import xml_utils
+
 try:
 	from xml.etree.ElementTree import ParseError as XMLError
 except ImportError:
 	from xml.parsers.expat import ExpatError as XMLError
-from time import strftime, gmtime
+
+from time import gmtime, strftime
 
 from requests import request
 from requests.exceptions import HTTPError
 
-
 __all__ = [
 	'Feeds',
 	'Inventory',
diff --git a/erpnext/erpnext_integrations/doctype/amazon_mws_settings/amazon_mws_settings.py b/erpnext/erpnext_integrations/doctype/amazon_mws_settings/amazon_mws_settings.py
index 9c59840..ac59eb7 100644
--- a/erpnext/erpnext_integrations/doctype/amazon_mws_settings/amazon_mws_settings.py
+++ b/erpnext/erpnext_integrations/doctype/amazon_mws_settings/amazon_mws_settings.py
@@ -3,12 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe.model.document import Document
+
 import dateutil
+import frappe
 from frappe.custom.doctype.custom_field.custom_field import create_custom_fields
+from frappe.model.document import Document
+
 from erpnext.erpnext_integrations.doctype.amazon_mws_settings.amazon_methods import get_orders
 
+
 class AmazonMWSSettings(Document):
 	def validate(self):
 		if self.enable_amazon == 1:
diff --git a/erpnext/erpnext_integrations/doctype/amazon_mws_settings/test_amazon_mws_settings.py b/erpnext/erpnext_integrations/doctype/amazon_mws_settings/test_amazon_mws_settings.py
index 7b40014..844df59 100644
--- a/erpnext/erpnext_integrations/doctype/amazon_mws_settings/test_amazon_mws_settings.py
+++ b/erpnext/erpnext_integrations/doctype/amazon_mws_settings/test_amazon_mws_settings.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestAmazonMWSSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/erpnext_integrations/doctype/amazon_mws_settings/xml_utils.py b/erpnext/erpnext_integrations/doctype/amazon_mws_settings/xml_utils.py
index 52ba023..88ef64d 100644
--- a/erpnext/erpnext_integrations/doctype/amazon_mws_settings/xml_utils.py
+++ b/erpnext/erpnext_integrations/doctype/amazon_mws_settings/xml_utils.py
@@ -8,8 +8,8 @@
 """
 from __future__ import unicode_literals
 
-import xml.etree.ElementTree as ET
 import re
+import xml.etree.ElementTree as ET
 
 
 class object_dict(dict):
diff --git a/erpnext/erpnext_integrations/doctype/exotel_settings/exotel_settings.py b/erpnext/erpnext_integrations/doctype/exotel_settings/exotel_settings.py
index bff928c..f1314fc 100644
--- a/erpnext/erpnext_integrations/doctype/exotel_settings/exotel_settings.py
+++ b/erpnext/erpnext_integrations/doctype/exotel_settings/exotel_settings.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-from frappe.model.document import Document
-import requests
+
 import frappe
+import requests
 from frappe import _
+from frappe.model.document import Document
+
 
 class ExotelSettings(Document):
 	def validate(self):
diff --git a/erpnext/erpnext_integrations/doctype/gocardless_mandate/gocardless_mandate.py b/erpnext/erpnext_integrations/doctype/gocardless_mandate/gocardless_mandate.py
index 9c9df65..b416ce8 100644
--- a/erpnext/erpnext_integrations/doctype/gocardless_mandate/gocardless_mandate.py
+++ b/erpnext/erpnext_integrations/doctype/gocardless_mandate/gocardless_mandate.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class GoCardlessMandate(Document):
 	pass
diff --git a/erpnext/erpnext_integrations/doctype/gocardless_mandate/test_gocardless_mandate.py b/erpnext/erpnext_integrations/doctype/gocardless_mandate/test_gocardless_mandate.py
index d77a352..1b76ee5 100644
--- a/erpnext/erpnext_integrations/doctype/gocardless_mandate/test_gocardless_mandate.py
+++ b/erpnext/erpnext_integrations/doctype/gocardless_mandate/test_gocardless_mandate.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestGoCardlessMandate(unittest.TestCase):
 	pass
diff --git a/erpnext/erpnext_integrations/doctype/gocardless_settings/__init__.py b/erpnext/erpnext_integrations/doctype/gocardless_settings/__init__.py
index 25784a5..d003edb 100644
--- a/erpnext/erpnext_integrations/doctype/gocardless_settings/__init__.py
+++ b/erpnext/erpnext_integrations/doctype/gocardless_settings/__init__.py
@@ -3,10 +3,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
-import json
-import hmac
+
 import hashlib
+import hmac
+import json
+
+import frappe
+
 
 @frappe.whitelist(allow_guest=True)
 def webhooks():
diff --git a/erpnext/erpnext_integrations/doctype/gocardless_settings/gocardless_settings.py b/erpnext/erpnext_integrations/doctype/gocardless_settings/gocardless_settings.py
index c65e3ce..6484973 100644
--- a/erpnext/erpnext_integrations/doctype/gocardless_settings/gocardless_settings.py
+++ b/erpnext/erpnext_integrations/doctype/gocardless_settings/gocardless_settings.py
@@ -3,13 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.document import Document
 import gocardless_pro
 from frappe import _
+from frappe.integrations.utils import create_payment_gateway, create_request_log
+from frappe.model.document import Document
+from frappe.utils import call_hook_method, cint, flt, get_url
 from six.moves.urllib.parse import urlencode
-from frappe.utils import get_url, call_hook_method, flt, cint
-from frappe.integrations.utils import create_request_log, create_payment_gateway
+
 
 class GoCardlessSettings(Document):
 	supported_currencies = ["EUR", "DKK", "GBP", "SEK"]
diff --git a/erpnext/erpnext_integrations/doctype/gocardless_settings/test_gocardless_settings.py b/erpnext/erpnext_integrations/doctype/gocardless_settings/test_gocardless_settings.py
index e377f34..b17aef5 100644
--- a/erpnext/erpnext_integrations/doctype/gocardless_settings/test_gocardless_settings.py
+++ b/erpnext/erpnext_integrations/doctype/gocardless_settings/test_gocardless_settings.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestGoCardlessSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/erpnext_integrations/doctype/mpesa_settings/mpesa_connector.py b/erpnext/erpnext_integrations/doctype/mpesa_settings/mpesa_connector.py
index d1adeee..6d46a1c 100644
--- a/erpnext/erpnext_integrations/doctype/mpesa_settings/mpesa_connector.py
+++ b/erpnext/erpnext_integrations/doctype/mpesa_settings/mpesa_connector.py
@@ -1,7 +1,9 @@
 import base64
+import datetime
+
 import requests
 from requests.auth import HTTPBasicAuth
-import datetime
+
 
 class MpesaConnector():
 	def __init__(self, env="sandbox", app_key=None, app_secret=None, sandbox_url="https://sandbox.safaricom.co.ke",
diff --git a/erpnext/erpnext_integrations/doctype/mpesa_settings/mpesa_custom_fields.py b/erpnext/erpnext_integrations/doctype/mpesa_settings/mpesa_custom_fields.py
index 139e2fb..368139b 100644
--- a/erpnext/erpnext_integrations/doctype/mpesa_settings/mpesa_custom_fields.py
+++ b/erpnext/erpnext_integrations/doctype/mpesa_settings/mpesa_custom_fields.py
@@ -1,6 +1,7 @@
 import frappe
 from frappe.custom.doctype.custom_field.custom_field import create_custom_fields
 
+
 def create_custom_pos_fields():
 	"""Create custom fields corresponding to POS Settings and POS Invoice."""
 	pos_field = {
diff --git a/erpnext/erpnext_integrations/doctype/mpesa_settings/mpesa_settings.py b/erpnext/erpnext_integrations/doctype/mpesa_settings/mpesa_settings.py
index de93357..4ce85e5 100644
--- a/erpnext/erpnext_integrations/doctype/mpesa_settings/mpesa_settings.py
+++ b/erpnext/erpnext_integrations/doctype/mpesa_settings/mpesa_settings.py
@@ -4,17 +4,21 @@
 
 
 from __future__ import unicode_literals
-from json import loads, dumps
+
+from json import dumps, loads
 
 import frappe
-from frappe.model.document import Document
 from frappe import _
-from frappe.utils import call_hook_method, fmt_money
-from frappe.integrations.utils import create_request_log, create_payment_gateway
-from frappe.utils import get_request_site_address
-from erpnext.erpnext_integrations.utils import create_mode_of_payment
+from frappe.integrations.utils import create_payment_gateway, create_request_log
+from frappe.model.document import Document
+from frappe.utils import call_hook_method, fmt_money, get_request_site_address
+
 from erpnext.erpnext_integrations.doctype.mpesa_settings.mpesa_connector import MpesaConnector
-from erpnext.erpnext_integrations.doctype.mpesa_settings.mpesa_custom_fields import create_custom_pos_fields
+from erpnext.erpnext_integrations.doctype.mpesa_settings.mpesa_custom_fields import (
+	create_custom_pos_fields,
+)
+from erpnext.erpnext_integrations.utils import create_mode_of_payment
+
 
 class MpesaSettings(Document):
 	supported_currencies = ["KES"]
@@ -39,7 +43,9 @@
 		for i, amount in enumerate(request_amounts):
 			args.request_amount = amount
 			if frappe.flags.in_test:
-				from erpnext.erpnext_integrations.doctype.mpesa_settings.test_mpesa_settings import get_payment_request_response_payload
+				from erpnext.erpnext_integrations.doctype.mpesa_settings.test_mpesa_settings import (
+					get_payment_request_response_payload,
+				)
 				response = frappe._dict(get_payment_request_response_payload(amount))
 			else:
 				response = frappe._dict(generate_stk_push(**args))
@@ -71,7 +77,9 @@
 		)
 
 		if frappe.flags.in_test:
-			from erpnext.erpnext_integrations.doctype.mpesa_settings.test_mpesa_settings import get_test_account_balance_response
+			from erpnext.erpnext_integrations.doctype.mpesa_settings.test_mpesa_settings import (
+				get_test_account_balance_response,
+			)
 			response = frappe._dict(get_test_account_balance_response())
 		else:
 			response = frappe._dict(get_account_balance(payload))
diff --git a/erpnext/erpnext_integrations/doctype/mpesa_settings/test_mpesa_settings.py b/erpnext/erpnext_integrations/doctype/mpesa_settings/test_mpesa_settings.py
index d4cb6b9..de81b82 100644
--- a/erpnext/erpnext_integrations/doctype/mpesa_settings/test_mpesa_settings.py
+++ b/erpnext/erpnext_integrations/doctype/mpesa_settings/test_mpesa_settings.py
@@ -2,13 +2,20 @@
 # Copyright (c) 2020, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
-from json import dumps
-import frappe
+
 import unittest
-from erpnext.erpnext_integrations.doctype.mpesa_settings.mpesa_settings import process_balance_info, verify_transaction
+from json import dumps
+
+import frappe
+
 from erpnext.accounts.doctype.pos_invoice.test_pos_invoice import create_pos_invoice
+from erpnext.erpnext_integrations.doctype.mpesa_settings.mpesa_settings import (
+	process_balance_info,
+	verify_transaction,
+)
 from erpnext.erpnext_integrations.utils import create_mode_of_payment
 
+
 class TestMpesaSettings(unittest.TestCase):
 	def setUp(self):
 		# create payment gateway in setup
diff --git a/erpnext/erpnext_integrations/doctype/plaid_settings/plaid_connector.py b/erpnext/erpnext_integrations/doctype/plaid_settings/plaid_connector.py
index 73f5927..d4cf56a 100644
--- a/erpnext/erpnext_integrations/doctype/plaid_settings/plaid_connector.py
+++ b/erpnext/erpnext_integrations/doctype/plaid_settings/plaid_connector.py
@@ -2,12 +2,11 @@
 # Copyright (c) 2018, Frappe Technologies Pvt. Ltd. and contributors
 # For license information, please see license.txt
 
+import frappe
 import plaid
 import requests
-from plaid.errors import APIError, ItemError, InvalidRequestError
-
-import frappe
 from frappe import _
+from plaid.errors import APIError, InvalidRequestError, ItemError
 
 
 class PlaidConnector():
diff --git a/erpnext/erpnext_integrations/doctype/plaid_settings/plaid_settings.py b/erpnext/erpnext_integrations/doctype/plaid_settings/plaid_settings.py
index eddcb34..d2748c2 100644
--- a/erpnext/erpnext_integrations/doctype/plaid_settings/plaid_settings.py
+++ b/erpnext/erpnext_integrations/doctype/plaid_settings/plaid_settings.py
@@ -5,15 +5,16 @@
 import json
 
 import frappe
-from erpnext.accounts.doctype.journal_entry.journal_entry import get_default_bank_cash_account
-from erpnext.erpnext_integrations.doctype.plaid_settings.plaid_connector import PlaidConnector
 from frappe import _
 from frappe.desk.doctype.tag.tag import add_tag
 from frappe.model.document import Document
 from frappe.utils import add_months, formatdate, getdate, today
-
 from plaid.errors import ItemError
 
+from erpnext.accounts.doctype.journal_entry.journal_entry import get_default_bank_cash_account
+from erpnext.erpnext_integrations.doctype.plaid_settings.plaid_connector import PlaidConnector
+
+
 class PlaidSettings(Document):
 	@staticmethod
 	@frappe.whitelist()
diff --git a/erpnext/erpnext_integrations/doctype/plaid_settings/test_plaid_settings.py b/erpnext/erpnext_integrations/doctype/plaid_settings/test_plaid_settings.py
index e2243ea..32b5b8f 100644
--- a/erpnext/erpnext_integrations/doctype/plaid_settings/test_plaid_settings.py
+++ b/erpnext/erpnext_integrations/doctype/plaid_settings/test_plaid_settings.py
@@ -6,11 +6,16 @@
 import unittest
 
 import frappe
+from frappe.utils.response import json_handler
+
 from erpnext.accounts.doctype.journal_entry.journal_entry import get_default_bank_cash_account
 from erpnext.erpnext_integrations.doctype.plaid_settings.plaid_settings import (
-	add_account_subtype, add_account_type, add_bank_accounts,
-	new_bank_transaction, get_plaid_configuration)
-from frappe.utils.response import json_handler
+	add_account_subtype,
+	add_account_type,
+	add_bank_accounts,
+	get_plaid_configuration,
+	new_bank_transaction,
+)
 
 
 class TestPlaidSettings(unittest.TestCase):
diff --git a/erpnext/erpnext_integrations/doctype/quickbooks_migrator/quickbooks_migrator.py b/erpnext/erpnext_integrations/doctype/quickbooks_migrator/quickbooks_migrator.py
index 866ea66..39b9bb2 100644
--- a/erpnext/erpnext_integrations/doctype/quickbooks_migrator/quickbooks_migrator.py
+++ b/erpnext/erpnext_integrations/doctype/quickbooks_migrator/quickbooks_migrator.py
@@ -3,15 +3,19 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
+import json
+import traceback
+
 import frappe
+import requests
 from frappe import _
 from frappe.model.document import Document
 from requests_oauthlib import OAuth2Session
-import json
-import requests
-import traceback
+
 from erpnext import encode_company_abbr
 
+
 # QuickBooks requires a redirect URL, User will be redirect to this URL
 # This will be a GET request
 # Request parameters will have two parameters `code` and `realmId`
@@ -253,8 +257,9 @@
 		try:
 			# Assumes that exactly one fiscal year has been created so far
 			# Creates fiscal years till oldest ledger entry date is covered
-			from frappe.utils.data import add_years, getdate
 			from itertools import chain
+
+			from frappe.utils.data import add_years, getdate
 			smallest_ledger_entry_date = getdate(min(entry["date"] for entry in chain(*self.gl_entries.values()) if entry["date"]))
 			oldest_fiscal_year = frappe.get_all("Fiscal Year",
 				fields=["year_start_date", "year_end_date"],
diff --git a/erpnext/erpnext_integrations/doctype/quickbooks_migrator/test_quickbooks_migrator.py b/erpnext/erpnext_integrations/doctype/quickbooks_migrator/test_quickbooks_migrator.py
index 6ce7c92..5604b40 100644
--- a/erpnext/erpnext_integrations/doctype/quickbooks_migrator/test_quickbooks_migrator.py
+++ b/erpnext/erpnext_integrations/doctype/quickbooks_migrator/test_quickbooks_migrator.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestQuickBooksMigrator(unittest.TestCase):
 	pass
diff --git a/erpnext/erpnext_integrations/doctype/tally_migration/tally_migration.py b/erpnext/erpnext_integrations/doctype/tally_migration/tally_migration.py
index 77dba8b..e1e7f62 100644
--- a/erpnext/erpnext_integrations/doctype/tally_migration/tally_migration.py
+++ b/erpnext/erpnext_integrations/doctype/tally_migration/tally_migration.py
@@ -11,19 +11,19 @@
 import zipfile
 from decimal import Decimal
 
-from bs4 import BeautifulSoup as bs
-
 import frappe
-from erpnext import encode_company_abbr
-from erpnext.accounts.doctype.account.chart_of_accounts.chart_of_accounts import create_charts
-from erpnext.accounts.doctype.chart_of_accounts_importer.chart_of_accounts_importer import unset_existing_data
-
+from bs4 import BeautifulSoup as bs
 from frappe import _
 from frappe.custom.doctype.custom_field.custom_field import create_custom_field
 from frappe.model.document import Document
-from frappe.model.naming import getseries, revert_series_if_last
 from frappe.utils.data import format_datetime
 
+from erpnext import encode_company_abbr
+from erpnext.accounts.doctype.account.chart_of_accounts.chart_of_accounts import create_charts
+from erpnext.accounts.doctype.chart_of_accounts_importer.chart_of_accounts_importer import (
+	unset_existing_data,
+)
+
 PRIMARY_ACCOUNT = "Primary"
 VOUCHER_CHUNK_SIZE = 500
 
diff --git a/erpnext/erpnext_integrations/doctype/tally_migration/test_tally_migration.py b/erpnext/erpnext_integrations/doctype/tally_migration/test_tally_migration.py
index 9f67e55..aae8f6d 100644
--- a/erpnext/erpnext_integrations/doctype/tally_migration/test_tally_migration.py
+++ b/erpnext/erpnext_integrations/doctype/tally_migration/test_tally_migration.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestTallyMigration(unittest.TestCase):
 	pass
diff --git a/erpnext/erpnext_integrations/doctype/taxjar_settings/taxjar_settings.py b/erpnext/erpnext_integrations/doctype/taxjar_settings/taxjar_settings.py
index 7f5f0f0..9dd4817 100644
--- a/erpnext/erpnext_integrations/doctype/taxjar_settings/taxjar_settings.py
+++ b/erpnext/erpnext_integrations/doctype/taxjar_settings/taxjar_settings.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class TaxJarSettings(Document):
 	pass
diff --git a/erpnext/erpnext_integrations/doctype/taxjar_settings/test_taxjar_settings.py b/erpnext/erpnext_integrations/doctype/taxjar_settings/test_taxjar_settings.py
index 7cdfd00..c871b05 100644
--- a/erpnext/erpnext_integrations/doctype/taxjar_settings/test_taxjar_settings.py
+++ b/erpnext/erpnext_integrations/doctype/taxjar_settings/test_taxjar_settings.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestTaxJarSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/erpnext_integrations/doctype/woocommerce_settings/test_woocommerce_settings.py b/erpnext/erpnext_integrations/doctype/woocommerce_settings/test_woocommerce_settings.py
index 458a23f..3d18458 100644
--- a/erpnext/erpnext_integrations/doctype/woocommerce_settings/test_woocommerce_settings.py
+++ b/erpnext/erpnext_integrations/doctype/woocommerce_settings/test_woocommerce_settings.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestWoocommerceSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/erpnext_integrations/doctype/woocommerce_settings/woocommerce_settings.py b/erpnext/erpnext_integrations/doctype/woocommerce_settings/woocommerce_settings.py
index 45f2610..2e15fab 100644
--- a/erpnext/erpnext_integrations/doctype/woocommerce_settings/woocommerce_settings.py
+++ b/erpnext/erpnext_integrations/doctype/woocommerce_settings/woocommerce_settings.py
@@ -3,12 +3,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils.nestedset import get_root_of
-from frappe.model.document import Document
-from six.moves.urllib.parse import urlparse
 from frappe.custom.doctype.custom_field.custom_field import create_custom_field
+from frappe.model.document import Document
+from frappe.utils.nestedset import get_root_of
+from six.moves.urllib.parse import urlparse
+
 
 class WoocommerceSettings(Document):
 	def validate(self):
diff --git a/erpnext/erpnext_integrations/stripe_integration.py b/erpnext/erpnext_integrations/stripe_integration.py
index 820c740..f0315eb 100644
--- a/erpnext/erpnext_integrations/stripe_integration.py
+++ b/erpnext/erpnext_integrations/stripe_integration.py
@@ -2,9 +2,8 @@
 # Copyright (c) 2018, Frappe Technologies Pvt. Ltd. and contributors
 # For license information, please see license.txt
 
-import stripe
-
 import frappe
+import stripe
 from frappe import _
 from frappe.integrations.utils import create_request_log
 
diff --git a/erpnext/erpnext_integrations/taxjar_integration.py b/erpnext/erpnext_integrations/taxjar_integration.py
index 574fe25..870a4ef 100644
--- a/erpnext/erpnext_integrations/taxjar_integration.py
+++ b/erpnext/erpnext_integrations/taxjar_integration.py
@@ -1,11 +1,13 @@
 import traceback
+
 import frappe
 import taxjar
-from erpnext import get_default_company
 from frappe import _
 from frappe.contacts.doctype.address.address import get_company_address
 from frappe.utils import cint
 
+from erpnext import get_default_company
+
 TAX_ACCOUNT_HEAD = frappe.db.get_single_value("TaxJar Settings", "tax_account_head")
 SHIP_ACCOUNT_HEAD = frappe.db.get_single_value("TaxJar Settings", "shipping_account_head")
 TAXJAR_CREATE_TRANSACTIONS = frappe.db.get_single_value("TaxJar Settings", "taxjar_create_transactions")
diff --git a/erpnext/erpnext_integrations/utils.py b/erpnext/erpnext_integrations/utils.py
index caafc08..bb5c0c2 100644
--- a/erpnext/erpnext_integrations/utils.py
+++ b/erpnext/erpnext_integrations/utils.py
@@ -1,10 +1,16 @@
 from __future__ import unicode_literals
+
+import base64
+import hashlib
+import hmac
+
 import frappe
 from frappe import _
-import base64, hashlib, hmac
 from six.moves.urllib.parse import urlparse
+
 from erpnext import get_default_company
 
+
 def validate_webhooks_request(doctype,  hmac_key, secret_key='secret'):
 	def innerfn(fn):
 		settings = frappe.get_doc(doctype)
diff --git a/erpnext/exceptions.py b/erpnext/exceptions.py
index 04291cd..9c6b13f 100644
--- a/erpnext/exceptions.py
+++ b/erpnext/exceptions.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 # accounts
 class PartyFrozen(frappe.ValidationError): pass
 class InvalidAccountCurrency(frappe.ValidationError): pass
diff --git a/erpnext/healthcare/dashboard_chart_source/department_wise_patient_appointments/department_wise_patient_appointments.py b/erpnext/healthcare/dashboard_chart_source/department_wise_patient_appointments/department_wise_patient_appointments.py
index eca7143..9c71ce8 100644
--- a/erpnext/healthcare/dashboard_chart_source/department_wise_patient_appointments/department_wise_patient_appointments.py
+++ b/erpnext/healthcare/dashboard_chart_source/department_wise_patient_appointments/department_wise_patient_appointments.py
@@ -2,9 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.utils.dashboard import cache_source
 
+
 @frappe.whitelist()
 @cache_source
 def get(chart_name = None, chart = None, no_cache = None, filters = None, from_date = None,
diff --git a/erpnext/healthcare/doctype/antibiotic/antibiotic.py b/erpnext/healthcare/doctype/antibiotic/antibiotic.py
index 8236c8a..6a4b764 100644
--- a/erpnext/healthcare/doctype/antibiotic/antibiotic.py
+++ b/erpnext/healthcare/doctype/antibiotic/antibiotic.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class Antibiotic(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/antibiotic/test_antibiotic.py b/erpnext/healthcare/doctype/antibiotic/test_antibiotic.py
index 6ac4f4f..b6ec79f 100644
--- a/erpnext/healthcare/doctype/antibiotic/test_antibiotic.py
+++ b/erpnext/healthcare/doctype/antibiotic/test_antibiotic.py
@@ -2,7 +2,9 @@
 # Copyright (c) 2017, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
 
+
 class TestAntibiotic(unittest.TestCase):
 	pass
diff --git a/erpnext/healthcare/doctype/appointment_type/appointment_type.py b/erpnext/healthcare/doctype/appointment_type/appointment_type.py
index 67a24f3..94d023f 100644
--- a/erpnext/healthcare/doctype/appointment_type/appointment_type.py
+++ b/erpnext/healthcare/doctype/appointment_type/appointment_type.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-from frappe.model.document import Document
+
 import frappe
+from frappe.model.document import Document
+
 
 class AppointmentType(Document):
 	def validate(self):
diff --git a/erpnext/healthcare/doctype/appointment_type/appointment_type_dashboard.py b/erpnext/healthcare/doctype/appointment_type/appointment_type_dashboard.py
index 845e446..b9c6edb 100644
--- a/erpnext/healthcare/doctype/appointment_type/appointment_type_dashboard.py
+++ b/erpnext/healthcare/doctype/appointment_type/appointment_type_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'appointment_type',
diff --git a/erpnext/healthcare/doctype/appointment_type_service_item/appointment_type_service_item.py b/erpnext/healthcare/doctype/appointment_type_service_item/appointment_type_service_item.py
index b2e0e82..026d5d7 100644
--- a/erpnext/healthcare/doctype/appointment_type_service_item/appointment_type_service_item.py
+++ b/erpnext/healthcare/doctype/appointment_type_service_item/appointment_type_service_item.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class AppointmentTypeServiceItem(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/body_part/body_part.py b/erpnext/healthcare/doctype/body_part/body_part.py
index 300493a..77e8dd9 100644
--- a/erpnext/healthcare/doctype/body_part/body_part.py
+++ b/erpnext/healthcare/doctype/body_part/body_part.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class BodyPart(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/body_part/test_body_part.py b/erpnext/healthcare/doctype/body_part/test_body_part.py
index cb3a611..a81ba17 100644
--- a/erpnext/healthcare/doctype/body_part/test_body_part.py
+++ b/erpnext/healthcare/doctype/body_part/test_body_part.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestBodyPart(unittest.TestCase):
 	pass
diff --git a/erpnext/healthcare/doctype/body_part_link/body_part_link.py b/erpnext/healthcare/doctype/body_part_link/body_part_link.py
index 0371529..07488f0 100644
--- a/erpnext/healthcare/doctype/body_part_link/body_part_link.py
+++ b/erpnext/healthcare/doctype/body_part_link/body_part_link.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class BodyPartLink(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/clinical_procedure/clinical_procedure.py b/erpnext/healthcare/doctype/clinical_procedure/clinical_procedure.py
index cbf89ee..df4c2ef 100644
--- a/erpnext/healthcare/doctype/clinical_procedure/clinical_procedure.py
+++ b/erpnext/healthcare/doctype/clinical_procedure/clinical_procedure.py
@@ -3,15 +3,18 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
-from frappe.utils import flt, nowdate, nowtime, cstr
+from frappe.model.mapper import get_mapped_doc
+from frappe.utils import flt, nowdate, nowtime
+
 from erpnext.healthcare.doctype.healthcare_settings.healthcare_settings import get_account
 from erpnext.healthcare.doctype.lab_test.lab_test import create_sample_doc
-from erpnext.stock.stock_ledger import get_previous_sle
 from erpnext.stock.get_item_details import get_item_details
-from frappe.model.mapper import get_mapped_doc
+from erpnext.stock.stock_ledger import get_previous_sle
+
 
 class ClinicalProcedure(Document):
 	def validate(self):
diff --git a/erpnext/healthcare/doctype/clinical_procedure/test_clinical_procedure.py b/erpnext/healthcare/doctype/clinical_procedure/test_clinical_procedure.py
index 0326e5e..b5c3744 100644
--- a/erpnext/healthcare/doctype/clinical_procedure/test_clinical_procedure.py
+++ b/erpnext/healthcare/doctype/clinical_procedure/test_clinical_procedure.py
@@ -4,8 +4,13 @@
 from __future__ import unicode_literals
 
 import unittest
+
 import frappe
-from erpnext.healthcare.doctype.patient_appointment.test_patient_appointment import create_healthcare_docs, create_clinical_procedure_template
+
+from erpnext.healthcare.doctype.patient_appointment.test_patient_appointment import (
+	create_clinical_procedure_template,
+	create_healthcare_docs,
+)
 
 test_dependencies = ['Item']
 
diff --git a/erpnext/healthcare/doctype/clinical_procedure_item/clinical_procedure_item.py b/erpnext/healthcare/doctype/clinical_procedure_item/clinical_procedure_item.py
index d59e517..16c5369 100644
--- a/erpnext/healthcare/doctype/clinical_procedure_item/clinical_procedure_item.py
+++ b/erpnext/healthcare/doctype/clinical_procedure_item/clinical_procedure_item.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class ClinicalProcedureItem(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/clinical_procedure_template/clinical_procedure_template.py b/erpnext/healthcare/doctype/clinical_procedure_template/clinical_procedure_template.py
index 58194f1..16e0969 100644
--- a/erpnext/healthcare/doctype/clinical_procedure_template/clinical_procedure_template.py
+++ b/erpnext/healthcare/doctype/clinical_procedure_template/clinical_procedure_template.py
@@ -3,11 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, json
+
+import json
+
+import frappe
 from frappe import _
 from frappe.model.document import Document
 from frappe.model.rename_doc import rename_doc
 
+
 class ClinicalProcedureTemplate(Document):
 	def validate(self):
 		self.enable_disable_item()
diff --git a/erpnext/healthcare/doctype/clinical_procedure_template/clinical_procedure_template_dashboard.py b/erpnext/healthcare/doctype/clinical_procedure_template/clinical_procedure_template_dashboard.py
index 9aab521..a69899d 100644
--- a/erpnext/healthcare/doctype/clinical_procedure_template/clinical_procedure_template_dashboard.py
+++ b/erpnext/healthcare/doctype/clinical_procedure_template/clinical_procedure_template_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'procedure_template',
diff --git a/erpnext/healthcare/doctype/clinical_procedure_template/test_clinical_procedure_template.py b/erpnext/healthcare/doctype/clinical_procedure_template/test_clinical_procedure_template.py
index 62e138b..f754c76 100644
--- a/erpnext/healthcare/doctype/clinical_procedure_template/test_clinical_procedure_template.py
+++ b/erpnext/healthcare/doctype/clinical_procedure_template/test_clinical_procedure_template.py
@@ -2,7 +2,9 @@
 # Copyright (c) 2017, earthians and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
 
+
 class TestClinicalProcedureTemplate(unittest.TestCase):
 	pass
diff --git a/erpnext/healthcare/doctype/codification_table/codification_table.py b/erpnext/healthcare/doctype/codification_table/codification_table.py
index ae29c03..232d92c 100644
--- a/erpnext/healthcare/doctype/codification_table/codification_table.py
+++ b/erpnext/healthcare/doctype/codification_table/codification_table.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class CodificationTable(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/complaint/complaint.py b/erpnext/healthcare/doctype/complaint/complaint.py
index 717f9db..20e00f6 100644
--- a/erpnext/healthcare/doctype/complaint/complaint.py
+++ b/erpnext/healthcare/doctype/complaint/complaint.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class Complaint(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/complaint/test_complaint.py b/erpnext/healthcare/doctype/complaint/test_complaint.py
index 2b9273a..d3e1069 100644
--- a/erpnext/healthcare/doctype/complaint/test_complaint.py
+++ b/erpnext/healthcare/doctype/complaint/test_complaint.py
@@ -2,7 +2,9 @@
 # Copyright (c) 2017, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
 
+
 class TestComplaint(unittest.TestCase):
 	pass
diff --git a/erpnext/healthcare/doctype/descriptive_test_result/descriptive_test_result.py b/erpnext/healthcare/doctype/descriptive_test_result/descriptive_test_result.py
index 7ccf6b5..c086046 100644
--- a/erpnext/healthcare/doctype/descriptive_test_result/descriptive_test_result.py
+++ b/erpnext/healthcare/doctype/descriptive_test_result/descriptive_test_result.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class DescriptiveTestResult(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/descriptive_test_template/descriptive_test_template.py b/erpnext/healthcare/doctype/descriptive_test_template/descriptive_test_template.py
index 281f32d..84184fb 100644
--- a/erpnext/healthcare/doctype/descriptive_test_template/descriptive_test_template.py
+++ b/erpnext/healthcare/doctype/descriptive_test_template/descriptive_test_template.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class DescriptiveTestTemplate(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/diagnosis/diagnosis.py b/erpnext/healthcare/doctype/diagnosis/diagnosis.py
index f56e790..05add1b 100644
--- a/erpnext/healthcare/doctype/diagnosis/diagnosis.py
+++ b/erpnext/healthcare/doctype/diagnosis/diagnosis.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class Diagnosis(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/dosage_form/dosage_form.py b/erpnext/healthcare/doctype/dosage_form/dosage_form.py
index 046af08..6b2d88b 100644
--- a/erpnext/healthcare/doctype/dosage_form/dosage_form.py
+++ b/erpnext/healthcare/doctype/dosage_form/dosage_form.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class DosageForm(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/dosage_form/test_dosage_form.py b/erpnext/healthcare/doctype/dosage_form/test_dosage_form.py
index 81cfcf6..0161b82 100644
--- a/erpnext/healthcare/doctype/dosage_form/test_dosage_form.py
+++ b/erpnext/healthcare/doctype/dosage_form/test_dosage_form.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestDosageForm(unittest.TestCase):
 	pass
diff --git a/erpnext/healthcare/doctype/dosage_strength/dosage_strength.py b/erpnext/healthcare/doctype/dosage_strength/dosage_strength.py
index e36a016..9e74743 100644
--- a/erpnext/healthcare/doctype/dosage_strength/dosage_strength.py
+++ b/erpnext/healthcare/doctype/dosage_strength/dosage_strength.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class DosageStrength(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/drug_prescription/drug_prescription.py b/erpnext/healthcare/doctype/drug_prescription/drug_prescription.py
index 68a2dc5..744bdb0 100755
--- a/erpnext/healthcare/doctype/drug_prescription/drug_prescription.py
+++ b/erpnext/healthcare/doctype/drug_prescription/drug_prescription.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 
+
 class DrugPrescription(Document):
 	def get_quantity(self):
 		quantity = 0
diff --git a/erpnext/healthcare/doctype/exercise/exercise.py b/erpnext/healthcare/doctype/exercise/exercise.py
index efd8999..5d2b1f1 100644
--- a/erpnext/healthcare/doctype/exercise/exercise.py
+++ b/erpnext/healthcare/doctype/exercise/exercise.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class Exercise(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/exercise_difficulty_level/exercise_difficulty_level.py b/erpnext/healthcare/doctype/exercise_difficulty_level/exercise_difficulty_level.py
index 17e97b8..bbb2972 100644
--- a/erpnext/healthcare/doctype/exercise_difficulty_level/exercise_difficulty_level.py
+++ b/erpnext/healthcare/doctype/exercise_difficulty_level/exercise_difficulty_level.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class ExerciseDifficultyLevel(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/exercise_difficulty_level/test_exercise_difficulty_level.py b/erpnext/healthcare/doctype/exercise_difficulty_level/test_exercise_difficulty_level.py
index 80ef3a7..dcaea08 100644
--- a/erpnext/healthcare/doctype/exercise_difficulty_level/test_exercise_difficulty_level.py
+++ b/erpnext/healthcare/doctype/exercise_difficulty_level/test_exercise_difficulty_level.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestExerciseDifficultyLevel(unittest.TestCase):
 	pass
diff --git a/erpnext/healthcare/doctype/exercise_type/exercise_type.py b/erpnext/healthcare/doctype/exercise_type/exercise_type.py
index ae44a2b..48eb6ba2 100644
--- a/erpnext/healthcare/doctype/exercise_type/exercise_type.py
+++ b/erpnext/healthcare/doctype/exercise_type/exercise_type.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class ExerciseType(Document):
 	def autoname(self):
 		if self.difficulty_level:
diff --git a/erpnext/healthcare/doctype/exercise_type/test_exercise_type.py b/erpnext/healthcare/doctype/exercise_type/test_exercise_type.py
index bf217e8..583aea9 100644
--- a/erpnext/healthcare/doctype/exercise_type/test_exercise_type.py
+++ b/erpnext/healthcare/doctype/exercise_type/test_exercise_type.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestExerciseType(unittest.TestCase):
 	pass
diff --git a/erpnext/healthcare/doctype/exercise_type_step/exercise_type_step.py b/erpnext/healthcare/doctype/exercise_type_step/exercise_type_step.py
index 13d7e57..412ef32 100644
--- a/erpnext/healthcare/doctype/exercise_type_step/exercise_type_step.py
+++ b/erpnext/healthcare/doctype/exercise_type_step/exercise_type_step.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class ExerciseTypeStep(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/fee_validity/fee_validity.py b/erpnext/healthcare/doctype/fee_validity/fee_validity.py
index 59586e0..aa30bec 100644
--- a/erpnext/healthcare/doctype/fee_validity/fee_validity.py
+++ b/erpnext/healthcare/doctype/fee_validity/fee_validity.py
@@ -3,11 +3,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-from frappe.model.document import Document
-import frappe
-from frappe.utils import getdate
+
 import datetime
 
+import frappe
+from frappe.model.document import Document
+from frappe.utils import getdate
+
+
 class FeeValidity(Document):
 	def validate(self):
 		self.update_status()
diff --git a/erpnext/healthcare/doctype/fee_validity/test_fee_validity.py b/erpnext/healthcare/doctype/fee_validity/test_fee_validity.py
index 957f852..ce1947f 100644
--- a/erpnext/healthcare/doctype/fee_validity/test_fee_validity.py
+++ b/erpnext/healthcare/doctype/fee_validity/test_fee_validity.py
@@ -3,11 +3,17 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import nowdate, add_days
-from erpnext.healthcare.doctype.patient_appointment.test_patient_appointment import create_healthcare_docs, create_appointment, create_healthcare_service_items
+
+import frappe
+from frappe.utils import add_days, nowdate
+
 from erpnext.accounts.doctype.pos_profile.test_pos_profile import make_pos_profile
+from erpnext.healthcare.doctype.patient_appointment.test_patient_appointment import (
+	create_appointment,
+	create_healthcare_docs,
+	create_healthcare_service_items,
+)
 
 test_dependencies = ["Company"]
 
diff --git a/erpnext/healthcare/doctype/fee_validity_reference/fee_validity_reference.py b/erpnext/healthcare/doctype/fee_validity_reference/fee_validity_reference.py
index c819280..c03978a 100644
--- a/erpnext/healthcare/doctype/fee_validity_reference/fee_validity_reference.py
+++ b/erpnext/healthcare/doctype/fee_validity_reference/fee_validity_reference.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class FeeValidityReference(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/healthcare.py b/erpnext/healthcare/doctype/healthcare.py
index 6fd2015..f8e008e 100644
--- a/erpnext/healthcare/doctype/healthcare.py
+++ b/erpnext/healthcare/doctype/healthcare.py
@@ -1,5 +1,6 @@
 from __future__ import unicode_literals
 
+
 def get_data():
 
 	return []
diff --git a/erpnext/healthcare/doctype/healthcare_practitioner/healthcare_practitioner.py b/erpnext/healthcare/doctype/healthcare_practitioner/healthcare_practitioner.py
index 5da5a06..4550e7a 100644
--- a/erpnext/healthcare/doctype/healthcare_practitioner/healthcare_practitioner.py
+++ b/erpnext/healthcare/doctype/healthcare_practitioner/healthcare_practitioner.py
@@ -3,13 +3,18 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.document import Document
 from frappe import _
-from erpnext.accounts.party import validate_party_accounts
-from frappe.contacts.address_and_contact import load_address_and_contact, delete_contact_and_address
+from frappe.contacts.address_and_contact import (
+	delete_contact_and_address,
+	load_address_and_contact,
+)
+from frappe.model.document import Document
 from frappe.model.naming import append_number_if_name_exists
-from frappe.desk.reportview import build_match_conditions, get_filters_cond
+
+from erpnext.accounts.party import validate_party_accounts
+
 
 class HealthcarePractitioner(Document):
 	def onload(self):
diff --git a/erpnext/healthcare/doctype/healthcare_practitioner/healthcare_practitioner_dashboard.py b/erpnext/healthcare/doctype/healthcare_practitioner/healthcare_practitioner_dashboard.py
index bcee444..8e0292e 100644
--- a/erpnext/healthcare/doctype/healthcare_practitioner/healthcare_practitioner_dashboard.py
+++ b/erpnext/healthcare/doctype/healthcare_practitioner/healthcare_practitioner_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'heatmap': True,
diff --git a/erpnext/healthcare/doctype/healthcare_practitioner/test_healthcare_practitioner.py b/erpnext/healthcare/doctype/healthcare_practitioner/test_healthcare_practitioner.py
index de8201b..214bcd2 100644
--- a/erpnext/healthcare/doctype/healthcare_practitioner/test_healthcare_practitioner.py
+++ b/erpnext/healthcare/doctype/healthcare_practitioner/test_healthcare_practitioner.py
@@ -2,7 +2,9 @@
 # Copyright (c) 2018, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
 
+
 class TestHealthcarePractitioner(unittest.TestCase):
 	pass
diff --git a/erpnext/healthcare/doctype/healthcare_schedule_time_slot/healthcare_schedule_time_slot.py b/erpnext/healthcare/doctype/healthcare_schedule_time_slot/healthcare_schedule_time_slot.py
index e58ea53..721da24 100644
--- a/erpnext/healthcare/doctype/healthcare_schedule_time_slot/healthcare_schedule_time_slot.py
+++ b/erpnext/healthcare/doctype/healthcare_schedule_time_slot/healthcare_schedule_time_slot.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class HealthcareScheduleTimeSlot(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/healthcare_service_unit/healthcare_service_unit.py b/erpnext/healthcare/doctype/healthcare_service_unit/healthcare_service_unit.py
index 5e76ed7..550b9fb 100644
--- a/erpnext/healthcare/doctype/healthcare_service_unit/healthcare_service_unit.py
+++ b/erpnext/healthcare/doctype/healthcare_service_unit/healthcare_service_unit.py
@@ -4,11 +4,12 @@
 
 from __future__ import unicode_literals
 
-from frappe.utils.nestedset import NestedSet
-from frappe.utils import cint, cstr
+import json
+
 import frappe
 from frappe import _
-import json
+from frappe.utils import cint, cstr
+from frappe.utils.nestedset import NestedSet
 
 
 class HealthcareServiceUnit(NestedSet):
diff --git a/erpnext/healthcare/doctype/healthcare_service_unit/test_healthcare_service_unit.py b/erpnext/healthcare/doctype/healthcare_service_unit/test_healthcare_service_unit.py
index bced2fe..84197e5 100644
--- a/erpnext/healthcare/doctype/healthcare_service_unit/test_healthcare_service_unit.py
+++ b/erpnext/healthcare/doctype/healthcare_service_unit/test_healthcare_service_unit.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestHealthcareServiceUnit(unittest.TestCase):
 	pass
diff --git a/erpnext/healthcare/doctype/healthcare_service_unit_type/healthcare_service_unit_type.py b/erpnext/healthcare/doctype/healthcare_service_unit_type/healthcare_service_unit_type.py
index a318e50..181cb52 100644
--- a/erpnext/healthcare/doctype/healthcare_service_unit_type/healthcare_service_unit_type.py
+++ b/erpnext/healthcare/doctype/healthcare_service_unit_type/healthcare_service_unit_type.py
@@ -3,11 +3,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
 from frappe.model.rename_doc import rename_doc
 
+
 class HealthcareServiceUnitType(Document):
 	def validate(self):
 		if self.allow_appointments and self.inpatient_occupancy:
diff --git a/erpnext/healthcare/doctype/healthcare_service_unit_type/healthcare_service_unit_type_dashboard.py b/erpnext/healthcare/doctype/healthcare_service_unit_type/healthcare_service_unit_type_dashboard.py
index 0ac548b..7421ec3 100644
--- a/erpnext/healthcare/doctype/healthcare_service_unit_type/healthcare_service_unit_type_dashboard.py
+++ b/erpnext/healthcare/doctype/healthcare_service_unit_type/healthcare_service_unit_type_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'service_unit_type',
diff --git a/erpnext/healthcare/doctype/healthcare_service_unit_type/test_healthcare_service_unit_type.py b/erpnext/healthcare/doctype/healthcare_service_unit_type/test_healthcare_service_unit_type.py
index 3ee3377..839e1d6 100644
--- a/erpnext/healthcare/doctype/healthcare_service_unit_type/test_healthcare_service_unit_type.py
+++ b/erpnext/healthcare/doctype/healthcare_service_unit_type/test_healthcare_service_unit_type.py
@@ -2,9 +2,12 @@
 # Copyright (c) 2018, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
+
 import frappe
 
+
 class TestHealthcareServiceUnitType(unittest.TestCase):
 	def test_item_creation(self):
 		unit_type = get_unit_type()
diff --git a/erpnext/healthcare/doctype/healthcare_settings/healthcare_settings.py b/erpnext/healthcare/doctype/healthcare_settings/healthcare_settings.py
index a16fceb..9ab8881 100644
--- a/erpnext/healthcare/doctype/healthcare_settings/healthcare_settings.py
+++ b/erpnext/healthcare/doctype/healthcare_settings/healthcare_settings.py
@@ -3,11 +3,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
+import json
+
 import frappe
 from frappe import _
-from frappe.model.document import Document
 from frappe.core.doctype.sms_settings.sms_settings import send_sms
-import json
+from frappe.model.document import Document
+
 
 class HealthcareSettings(Document):
 	def validate(self):
diff --git a/erpnext/healthcare/doctype/healthcare_settings/test_healthcare_settings.py b/erpnext/healthcare/doctype/healthcare_settings/test_healthcare_settings.py
index 1b620d5..af2f2b4 100644
--- a/erpnext/healthcare/doctype/healthcare_settings/test_healthcare_settings.py
+++ b/erpnext/healthcare/doctype/healthcare_settings/test_healthcare_settings.py
@@ -2,7 +2,9 @@
 # Copyright (c) 2017, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
 
+
 class TestHealthcareSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/healthcare/doctype/inpatient_medication_entry/inpatient_medication_entry.py b/erpnext/healthcare/doctype/inpatient_medication_entry/inpatient_medication_entry.py
index 3a299ed..b28e37a 100644
--- a/erpnext/healthcare/doctype/inpatient_medication_entry/inpatient_medication_entry.py
+++ b/erpnext/healthcare/doctype/inpatient_medication_entry/inpatient_medication_entry.py
@@ -3,12 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
-from frappe.utils import flt, get_link_to_form, getdate, nowtime
-from erpnext.stock.utils import get_latest_stock_qty
+from frappe.utils import flt, get_link_to_form
+
 from erpnext.healthcare.doctype.healthcare_settings.healthcare_settings import get_account
+from erpnext.stock.utils import get_latest_stock_qty
+
 
 class InpatientMedicationEntry(Document):
 	def validate(self):
diff --git a/erpnext/healthcare/doctype/inpatient_medication_entry/inpatient_medication_entry_dashboard.py b/erpnext/healthcare/doctype/inpatient_medication_entry/inpatient_medication_entry_dashboard.py
index a4bec45..ca9364d 100644
--- a/erpnext/healthcare/doctype/inpatient_medication_entry/inpatient_medication_entry_dashboard.py
+++ b/erpnext/healthcare/doctype/inpatient_medication_entry/inpatient_medication_entry_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'against_imoe',
diff --git a/erpnext/healthcare/doctype/inpatient_medication_entry/test_inpatient_medication_entry.py b/erpnext/healthcare/doctype/inpatient_medication_entry/test_inpatient_medication_entry.py
index ff9e212..dde7739 100644
--- a/erpnext/healthcare/doctype/inpatient_medication_entry/test_inpatient_medication_entry.py
+++ b/erpnext/healthcare/doctype/inpatient_medication_entry/test_inpatient_medication_entry.py
@@ -3,14 +3,32 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
+import frappe
 from frappe.utils import add_days, getdate, now_datetime
-from erpnext.healthcare.doctype.inpatient_record.test_inpatient_record import create_patient, create_inpatient, get_healthcare_service_unit, mark_invoiced_inpatient_occupancy
-from erpnext.healthcare.doctype.inpatient_record.inpatient_record import admit_patient, discharge_patient, schedule_discharge
-from erpnext.healthcare.doctype.inpatient_medication_order.test_inpatient_medication_order import create_ipmo, create_ipme
-from erpnext.healthcare.doctype.inpatient_medication_entry.inpatient_medication_entry import get_drug_shortage_map, make_difference_stock_entry
+
 from erpnext.healthcare.doctype.healthcare_settings.healthcare_settings import get_account
+from erpnext.healthcare.doctype.inpatient_medication_entry.inpatient_medication_entry import (
+	get_drug_shortage_map,
+	make_difference_stock_entry,
+)
+from erpnext.healthcare.doctype.inpatient_medication_order.test_inpatient_medication_order import (
+	create_ipme,
+	create_ipmo,
+)
+from erpnext.healthcare.doctype.inpatient_record.inpatient_record import (
+	admit_patient,
+	discharge_patient,
+	schedule_discharge,
+)
+from erpnext.healthcare.doctype.inpatient_record.test_inpatient_record import (
+	create_inpatient,
+	create_patient,
+	get_healthcare_service_unit,
+	mark_invoiced_inpatient_occupancy,
+)
+
 
 class TestInpatientMedicationEntry(unittest.TestCase):
 	def setUp(self):
diff --git a/erpnext/healthcare/doctype/inpatient_medication_entry_detail/inpatient_medication_entry_detail.py b/erpnext/healthcare/doctype/inpatient_medication_entry_detail/inpatient_medication_entry_detail.py
index 644898d..9173431 100644
--- a/erpnext/healthcare/doctype/inpatient_medication_entry_detail/inpatient_medication_entry_detail.py
+++ b/erpnext/healthcare/doctype/inpatient_medication_entry_detail/inpatient_medication_entry_detail.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class InpatientMedicationEntryDetail(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/inpatient_medication_order/inpatient_medication_order.py b/erpnext/healthcare/doctype/inpatient_medication_order/inpatient_medication_order.py
index b379e98..2e6d732 100644
--- a/erpnext/healthcare/doctype/inpatient_medication_order/inpatient_medication_order.py
+++ b/erpnext/healthcare/doctype/inpatient_medication_order/inpatient_medication_order.py
@@ -3,12 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
 from frappe.utils import cstr
+
 from erpnext.healthcare.doctype.patient_encounter.patient_encounter import get_prescription_dates
 
+
 class InpatientMedicationOrder(Document):
 	def validate(self):
 		self.validate_inpatient()
diff --git a/erpnext/healthcare/doctype/inpatient_medication_order/test_inpatient_medication_order.py b/erpnext/healthcare/doctype/inpatient_medication_order/test_inpatient_medication_order.py
index 7989762..477f8c9 100644
--- a/erpnext/healthcare/doctype/inpatient_medication_order/test_inpatient_medication_order.py
+++ b/erpnext/healthcare/doctype/inpatient_medication_order/test_inpatient_medication_order.py
@@ -3,11 +3,23 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
+import frappe
 from frappe.utils import add_days, getdate, now_datetime
-from erpnext.healthcare.doctype.inpatient_record.test_inpatient_record import create_patient, create_inpatient, get_healthcare_service_unit, mark_invoiced_inpatient_occupancy
-from erpnext.healthcare.doctype.inpatient_record.inpatient_record import admit_patient, discharge_patient, schedule_discharge
+
+from erpnext.healthcare.doctype.inpatient_record.inpatient_record import (
+	admit_patient,
+	discharge_patient,
+	schedule_discharge,
+)
+from erpnext.healthcare.doctype.inpatient_record.test_inpatient_record import (
+	create_inpatient,
+	create_patient,
+	get_healthcare_service_unit,
+	mark_invoiced_inpatient_occupancy,
+)
+
 
 class TestInpatientMedicationOrder(unittest.TestCase):
 	def setUp(self):
diff --git a/erpnext/healthcare/doctype/inpatient_medication_order_entry/inpatient_medication_order_entry.py b/erpnext/healthcare/doctype/inpatient_medication_order_entry/inpatient_medication_order_entry.py
index ebfe366..15800ad 100644
--- a/erpnext/healthcare/doctype/inpatient_medication_order_entry/inpatient_medication_order_entry.py
+++ b/erpnext/healthcare/doctype/inpatient_medication_order_entry/inpatient_medication_order_entry.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class InpatientMedicationOrderEntry(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/inpatient_occupancy/inpatient_occupancy.py b/erpnext/healthcare/doctype/inpatient_occupancy/inpatient_occupancy.py
index 52de25b..c8f3296 100644
--- a/erpnext/healthcare/doctype/inpatient_occupancy/inpatient_occupancy.py
+++ b/erpnext/healthcare/doctype/inpatient_occupancy/inpatient_occupancy.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class InpatientOccupancy(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/inpatient_record/inpatient_record.py b/erpnext/healthcare/doctype/inpatient_record/inpatient_record.py
index f4d1eaf..2e26677 100644
--- a/erpnext/healthcare/doctype/inpatient_record/inpatient_record.py
+++ b/erpnext/healthcare/doctype/inpatient_record/inpatient_record.py
@@ -3,11 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, json
+
+import json
+
+import frappe
 from frappe import _
-from frappe.utils import today, now_datetime, getdate, get_datetime, get_link_to_form
-from frappe.model.document import Document
 from frappe.desk.reportview import get_match_cond
+from frappe.model.document import Document
+from frappe.utils import get_datetime, get_link_to_form, getdate, now_datetime, today
+
 
 class InpatientRecord(Document):
 	def after_insert(self):
diff --git a/erpnext/healthcare/doctype/inpatient_record/inpatient_record_dashboard.py b/erpnext/healthcare/doctype/inpatient_record/inpatient_record_dashboard.py
index 92cc610..0f4adce 100644
--- a/erpnext/healthcare/doctype/inpatient_record/inpatient_record_dashboard.py
+++ b/erpnext/healthcare/doctype/inpatient_record/inpatient_record_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'inpatient_record',
diff --git a/erpnext/healthcare/doctype/inpatient_record/test_inpatient_record.py b/erpnext/healthcare/doctype/inpatient_record/test_inpatient_record.py
index b4a9612..58934e6 100644
--- a/erpnext/healthcare/doctype/inpatient_record/test_inpatient_record.py
+++ b/erpnext/healthcare/doctype/inpatient_record/test_inpatient_record.py
@@ -3,14 +3,21 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
+import frappe
 from frappe.utils import now_datetime, today
 from frappe.utils.make_random import get_random
-from erpnext.healthcare.doctype.inpatient_record.inpatient_record import admit_patient, discharge_patient, schedule_discharge
+
+from erpnext.healthcare.doctype.inpatient_record.inpatient_record import (
+	admit_patient,
+	discharge_patient,
+	schedule_discharge,
+)
 from erpnext.healthcare.doctype.lab_test.test_lab_test import create_patient_encounter
 from erpnext.healthcare.utils import get_encounters_to_invoice
 
+
 class TestInpatientRecord(unittest.TestCase):
 	def test_admit_and_discharge(self):
 		frappe.db.sql("""delete from `tabInpatient Record`""")
diff --git a/erpnext/healthcare/doctype/lab_prescription/lab_prescription.py b/erpnext/healthcare/doctype/lab_prescription/lab_prescription.py
index b788a0d..a3f9aa2 100644
--- a/erpnext/healthcare/doctype/lab_prescription/lab_prescription.py
+++ b/erpnext/healthcare/doctype/lab_prescription/lab_prescription.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class LabPrescription(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/lab_test/lab_test.py b/erpnext/healthcare/doctype/lab_test/lab_test.py
index 03e16f5..7db497c 100644
--- a/erpnext/healthcare/doctype/lab_test/lab_test.py
+++ b/erpnext/healthcare/doctype/lab_test/lab_test.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
-from frappe.utils import getdate, cstr, get_link_to_form
+from frappe.utils import get_link_to_form, getdate
+
 
 class LabTest(Document):
 	def validate(self):
diff --git a/erpnext/healthcare/doctype/lab_test/test_lab_test.py b/erpnext/healthcare/doctype/lab_test/test_lab_test.py
index c9f0029..da10bd8 100644
--- a/erpnext/healthcare/doctype/lab_test/test_lab_test.py
+++ b/erpnext/healthcare/doctype/lab_test/test_lab_test.py
@@ -2,13 +2,22 @@
 # Copyright (c) 2015, ESS LLP and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
+
 import frappe
 from frappe.utils import getdate, nowtime
-from erpnext.healthcare.doctype.patient_appointment.test_patient_appointment import create_patient
+
+from erpnext.healthcare.doctype.healthcare_settings.healthcare_settings import (
+	get_income_account,
+	get_receivable_account,
+)
 from erpnext.healthcare.doctype.lab_test.lab_test import create_multiple
-from erpnext.healthcare.doctype.healthcare_settings.healthcare_settings import get_receivable_account, get_income_account
-from erpnext.healthcare.doctype.patient_medical_record.test_patient_medical_record import create_lab_test_template as create_blood_test_template
+from erpnext.healthcare.doctype.patient_appointment.test_patient_appointment import create_patient
+from erpnext.healthcare.doctype.patient_medical_record.test_patient_medical_record import (
+	create_lab_test_template as create_blood_test_template,
+)
+
 
 class TestLabTest(unittest.TestCase):
 	def test_lab_test_item(self):
diff --git a/erpnext/healthcare/doctype/lab_test_group_template/lab_test_group_template.py b/erpnext/healthcare/doctype/lab_test_group_template/lab_test_group_template.py
index 1e2cef4..2e3c409 100644
--- a/erpnext/healthcare/doctype/lab_test_group_template/lab_test_group_template.py
+++ b/erpnext/healthcare/doctype/lab_test_group_template/lab_test_group_template.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class LabTestGroupTemplate(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/lab_test_sample/lab_test_sample.py b/erpnext/healthcare/doctype/lab_test_sample/lab_test_sample.py
index 4c66b72..3a765fe 100644
--- a/erpnext/healthcare/doctype/lab_test_sample/lab_test_sample.py
+++ b/erpnext/healthcare/doctype/lab_test_sample/lab_test_sample.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class LabTestSample(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/lab_test_sample/test_lab_test_sample.py b/erpnext/healthcare/doctype/lab_test_sample/test_lab_test_sample.py
index 2bc56bd..8896572 100644
--- a/erpnext/healthcare/doctype/lab_test_sample/test_lab_test_sample.py
+++ b/erpnext/healthcare/doctype/lab_test_sample/test_lab_test_sample.py
@@ -2,7 +2,9 @@
 # Copyright (c) 2017, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
 
+
 class TestLabTestSample(unittest.TestCase):
 	pass
diff --git a/erpnext/healthcare/doctype/lab_test_template/lab_test_template.py b/erpnext/healthcare/doctype/lab_test_template/lab_test_template.py
index 543dee2..c052693 100644
--- a/erpnext/healthcare/doctype/lab_test_template/lab_test_template.py
+++ b/erpnext/healthcare/doctype/lab_test_template/lab_test_template.py
@@ -3,10 +3,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, json
+
+import json
+
+import frappe
+from frappe import _
 from frappe.model.document import Document
 from frappe.model.rename_doc import rename_doc
-from frappe import _
+
 
 class LabTestTemplate(Document):
 	def after_insert(self):
diff --git a/erpnext/healthcare/doctype/lab_test_template/lab_test_template_dashboard.py b/erpnext/healthcare/doctype/lab_test_template/lab_test_template_dashboard.py
index 94dfeea..a4f9d4b 100644
--- a/erpnext/healthcare/doctype/lab_test_template/lab_test_template_dashboard.py
+++ b/erpnext/healthcare/doctype/lab_test_template/lab_test_template_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'template',
diff --git a/erpnext/healthcare/doctype/lab_test_template/test_lab_test_template.py b/erpnext/healthcare/doctype/lab_test_template/test_lab_test_template.py
index 4c9f55a..8d8ac64 100644
--- a/erpnext/healthcare/doctype/lab_test_template/test_lab_test_template.py
+++ b/erpnext/healthcare/doctype/lab_test_template/test_lab_test_template.py
@@ -2,6 +2,7 @@
 # Copyright (c) 2015, ESS and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
 
 # test_records = frappe.get_test_records('Lab Test Template')
diff --git a/erpnext/healthcare/doctype/lab_test_uom/lab_test_uom.py b/erpnext/healthcare/doctype/lab_test_uom/lab_test_uom.py
index 7ce8d2d..ce11c0f 100644
--- a/erpnext/healthcare/doctype/lab_test_uom/lab_test_uom.py
+++ b/erpnext/healthcare/doctype/lab_test_uom/lab_test_uom.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class LabTestUOM(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/lab_test_uom/test_lab_test_uom.py b/erpnext/healthcare/doctype/lab_test_uom/test_lab_test_uom.py
index 0b3f516..9fe2de5 100644
--- a/erpnext/healthcare/doctype/lab_test_uom/test_lab_test_uom.py
+++ b/erpnext/healthcare/doctype/lab_test_uom/test_lab_test_uom.py
@@ -2,6 +2,7 @@
 # Copyright (c) 2015, ESS and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
 
 # test_records = frappe.get_test_records('Lab Test UOM')
diff --git a/erpnext/healthcare/doctype/medical_code/medical_code.py b/erpnext/healthcare/doctype/medical_code/medical_code.py
index 0deaac3..4ed3d31 100644
--- a/erpnext/healthcare/doctype/medical_code/medical_code.py
+++ b/erpnext/healthcare/doctype/medical_code/medical_code.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class MedicalCode(Document):
 	def autoname(self):
 		self.name = self.medical_code_standard+" "+self.code
diff --git a/erpnext/healthcare/doctype/medical_code/test_medical_code.py b/erpnext/healthcare/doctype/medical_code/test_medical_code.py
index b1e0402..7584b05 100644
--- a/erpnext/healthcare/doctype/medical_code/test_medical_code.py
+++ b/erpnext/healthcare/doctype/medical_code/test_medical_code.py
@@ -2,7 +2,9 @@
 # Copyright (c) 2017, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
 
+
 class TestMedicalCode(unittest.TestCase):
 	pass
diff --git a/erpnext/healthcare/doctype/medical_code_standard/medical_code_standard.py b/erpnext/healthcare/doctype/medical_code_standard/medical_code_standard.py
index 7b2731c..be0ea89 100644
--- a/erpnext/healthcare/doctype/medical_code_standard/medical_code_standard.py
+++ b/erpnext/healthcare/doctype/medical_code_standard/medical_code_standard.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class MedicalCodeStandard(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/medical_code_standard/test_medical_code_standard.py b/erpnext/healthcare/doctype/medical_code_standard/test_medical_code_standard.py
index fde095d..3b046e3 100644
--- a/erpnext/healthcare/doctype/medical_code_standard/test_medical_code_standard.py
+++ b/erpnext/healthcare/doctype/medical_code_standard/test_medical_code_standard.py
@@ -2,7 +2,9 @@
 # Copyright (c) 2017, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
 
+
 class TestMedicalCodeStandard(unittest.TestCase):
 	pass
diff --git a/erpnext/healthcare/doctype/medical_department/medical_department.py b/erpnext/healthcare/doctype/medical_department/medical_department.py
index 0f2d4fc..7be5a1a 100644
--- a/erpnext/healthcare/doctype/medical_department/medical_department.py
+++ b/erpnext/healthcare/doctype/medical_department/medical_department.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class MedicalDepartment(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/medical_department/test_medical_department.py b/erpnext/healthcare/doctype/medical_department/test_medical_department.py
index 543750a..6435a23 100644
--- a/erpnext/healthcare/doctype/medical_department/test_medical_department.py
+++ b/erpnext/healthcare/doctype/medical_department/test_medical_department.py
@@ -2,6 +2,7 @@
 # Copyright (c) 2015, ESS LLP and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
 
 # test_records = frappe.get_test_records('Medical Department')
diff --git a/erpnext/healthcare/doctype/normal_test_result/normal_test_result.py b/erpnext/healthcare/doctype/normal_test_result/normal_test_result.py
index 63abf02..e72f726 100644
--- a/erpnext/healthcare/doctype/normal_test_result/normal_test_result.py
+++ b/erpnext/healthcare/doctype/normal_test_result/normal_test_result.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class NormalTestResult(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/normal_test_template/normal_test_template.py b/erpnext/healthcare/doctype/normal_test_template/normal_test_template.py
index bc2c991..9df4855 100644
--- a/erpnext/healthcare/doctype/normal_test_template/normal_test_template.py
+++ b/erpnext/healthcare/doctype/normal_test_template/normal_test_template.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class NormalTestTemplate(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/organism/organism.py b/erpnext/healthcare/doctype/organism/organism.py
index 1ead762..dfb9c0d 100644
--- a/erpnext/healthcare/doctype/organism/organism.py
+++ b/erpnext/healthcare/doctype/organism/organism.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class Organism(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/organism/test_organism.py b/erpnext/healthcare/doctype/organism/test_organism.py
index ecb9665..9d7ea0b 100644
--- a/erpnext/healthcare/doctype/organism/test_organism.py
+++ b/erpnext/healthcare/doctype/organism/test_organism.py
@@ -2,7 +2,9 @@
 # Copyright (c) 2019, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
 
+
 class TestOrganism(unittest.TestCase):
 	pass
diff --git a/erpnext/healthcare/doctype/organism_test_item/organism_test_item.py b/erpnext/healthcare/doctype/organism_test_item/organism_test_item.py
index 019a55b..6bb8e8f 100644
--- a/erpnext/healthcare/doctype/organism_test_item/organism_test_item.py
+++ b/erpnext/healthcare/doctype/organism_test_item/organism_test_item.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class OrganismTestItem(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/organism_test_result/organism_test_result.py b/erpnext/healthcare/doctype/organism_test_result/organism_test_result.py
index 02393c2..3428403 100644
--- a/erpnext/healthcare/doctype/organism_test_result/organism_test_result.py
+++ b/erpnext/healthcare/doctype/organism_test_result/organism_test_result.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class OrganismTestResult(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/patient/patient.py b/erpnext/healthcare/doctype/patient/patient.py
index 9dae1f6..970c000 100644
--- a/erpnext/healthcare/doctype/patient/patient.py
+++ b/erpnext/healthcare/doctype/patient/patient.py
@@ -3,18 +3,25 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
+import dateutil
 import frappe
 from frappe import _
-from frappe.model.document import Document
-from frappe.utils import cint, cstr, getdate
-import dateutil
 from frappe.contacts.address_and_contact import load_address_and_contact
 from frappe.contacts.doctype.contact.contact import get_default_contact
+from frappe.model.document import Document
 from frappe.model.naming import set_name_by_naming_series
+from frappe.utils import cint, cstr, getdate
 from frappe.utils.nestedset import get_root_of
+
 from erpnext import get_default_currency
-from erpnext.healthcare.doctype.healthcare_settings.healthcare_settings import get_receivable_account, get_income_account, send_registration_sms
 from erpnext.accounts.party import get_dashboard_info
+from erpnext.healthcare.doctype.healthcare_settings.healthcare_settings import (
+	get_income_account,
+	get_receivable_account,
+	send_registration_sms,
+)
+
 
 class Patient(Document):
 	def onload(self):
diff --git a/erpnext/healthcare/doctype/patient/patient_dashboard.py b/erpnext/healthcare/doctype/patient/patient_dashboard.py
index 7f7cfa8..a388b74 100644
--- a/erpnext/healthcare/doctype/patient/patient_dashboard.py
+++ b/erpnext/healthcare/doctype/patient/patient_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'heatmap': True,
diff --git a/erpnext/healthcare/doctype/patient/test_patient.py b/erpnext/healthcare/doctype/patient/test_patient.py
index 9274b6f..4b8c732 100644
--- a/erpnext/healthcare/doctype/patient/test_patient.py
+++ b/erpnext/healthcare/doctype/patient/test_patient.py
@@ -4,9 +4,12 @@
 from __future__ import unicode_literals
 
 import unittest
+
 import frappe
+
 from erpnext.healthcare.doctype.patient_appointment.test_patient_appointment import create_patient
 
+
 class TestPatient(unittest.TestCase):
 	def test_customer_created(self):
 		frappe.db.sql("""delete from `tabPatient`""")
diff --git a/erpnext/healthcare/doctype/patient_appointment/patient_appointment.py b/erpnext/healthcare/doctype/patient_appointment/patient_appointment.py
index f0d5af9..dcbcda0 100755
--- a/erpnext/healthcare/doctype/patient_appointment/patient_appointment.py
+++ b/erpnext/healthcare/doctype/patient_appointment/patient_appointment.py
@@ -3,17 +3,28 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe.model.document import Document
-import json
-from frappe.utils import getdate, get_time, flt, get_link_to_form
-from frappe.model.mapper import get_mapped_doc
-from frappe import _
+
 import datetime
+import json
+
+import frappe
+from frappe import _
 from frappe.core.doctype.sms_settings.sms_settings import send_sms
+from frappe.model.document import Document
+from frappe.model.mapper import get_mapped_doc
+from frappe.utils import flt, get_link_to_form, get_time, getdate
+
+from erpnext.healthcare.doctype.healthcare_settings.healthcare_settings import (
+	get_income_account,
+	get_receivable_account,
+)
+from erpnext.healthcare.utils import (
+	check_fee_validity,
+	get_service_item_and_practitioner_charge,
+	manage_fee_validity,
+)
 from erpnext.hr.doctype.employee.employee import is_holiday
-from erpnext.healthcare.doctype.healthcare_settings.healthcare_settings import get_receivable_account, get_income_account
-from erpnext.healthcare.utils import check_fee_validity, get_service_item_and_practitioner_charge, manage_fee_validity
+
 
 class MaximumCapacityError(frappe.ValidationError):
 	pass
@@ -100,7 +111,9 @@
 
 	def validate_service_unit(self):
 		if self.inpatient_record and self.service_unit:
-			from erpnext.healthcare.doctype.inpatient_medication_entry.inpatient_medication_entry import get_current_healthcare_service_unit
+			from erpnext.healthcare.doctype.inpatient_medication_entry.inpatient_medication_entry import (
+				get_current_healthcare_service_unit,
+			)
 
 			is_inpatient_occupancy_unit = frappe.db.get_value('Healthcare Service Unit', self.service_unit,
 				'inpatient_occupancy')
diff --git a/erpnext/healthcare/doctype/patient_appointment/patient_appointment_dashboard.py b/erpnext/healthcare/doctype/patient_appointment/patient_appointment_dashboard.py
index 085c4f6..43c63c9 100644
--- a/erpnext/healthcare/doctype/patient_appointment/patient_appointment_dashboard.py
+++ b/erpnext/healthcare/doctype/patient_appointment/patient_appointment_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'appointment',
diff --git a/erpnext/healthcare/doctype/patient_appointment/test_patient_appointment.py b/erpnext/healthcare/doctype/patient_appointment/test_patient_appointment.py
index 36ef2d1..8ca30b8 100644
--- a/erpnext/healthcare/doctype/patient_appointment/test_patient_appointment.py
+++ b/erpnext/healthcare/doctype/patient_appointment/test_patient_appointment.py
@@ -2,12 +2,19 @@
 # Copyright (c) 2015, ESS LLP and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
+
 import frappe
-from erpnext.healthcare.doctype.patient_appointment.patient_appointment import update_status, make_encounter, check_payment_fields_reqd, check_is_new_patient
-from frappe.utils import nowdate, add_days, now_datetime
-from frappe.utils.make_random import get_random
+from frappe.utils import add_days, now_datetime, nowdate
+
 from erpnext.accounts.doctype.pos_profile.test_pos_profile import make_pos_profile
+from erpnext.healthcare.doctype.patient_appointment.patient_appointment import (
+	check_is_new_patient,
+	check_payment_fields_reqd,
+	make_encounter,
+	update_status,
+)
 
 
 class TestPatientAppointment(unittest.TestCase):
@@ -131,9 +138,16 @@
 		self.assertEqual(frappe.db.get_value('Sales Invoice', sales_invoice_name, 'status'), 'Cancelled')
 
 	def test_appointment_booking_for_admission_service_unit(self):
-		from erpnext.healthcare.doctype.inpatient_record.inpatient_record import admit_patient, discharge_patient, schedule_discharge
-		from erpnext.healthcare.doctype.inpatient_record.test_inpatient_record import \
-			create_inpatient, get_healthcare_service_unit, mark_invoiced_inpatient_occupancy
+		from erpnext.healthcare.doctype.inpatient_record.inpatient_record import (
+			admit_patient,
+			discharge_patient,
+			schedule_discharge,
+		)
+		from erpnext.healthcare.doctype.inpatient_record.test_inpatient_record import (
+			create_inpatient,
+			get_healthcare_service_unit,
+			mark_invoiced_inpatient_occupancy,
+		)
 
 		frappe.db.sql("""delete from `tabInpatient Record`""")
 		patient, practitioner = create_healthcare_docs()
@@ -157,9 +171,16 @@
 		discharge_patient(ip_record1)
 
 	def test_invalid_healthcare_service_unit_validation(self):
-		from erpnext.healthcare.doctype.inpatient_record.inpatient_record import admit_patient, discharge_patient, schedule_discharge
-		from erpnext.healthcare.doctype.inpatient_record.test_inpatient_record import \
-			create_inpatient, get_healthcare_service_unit, mark_invoiced_inpatient_occupancy
+		from erpnext.healthcare.doctype.inpatient_record.inpatient_record import (
+			admit_patient,
+			discharge_patient,
+			schedule_discharge,
+		)
+		from erpnext.healthcare.doctype.inpatient_record.test_inpatient_record import (
+			create_inpatient,
+			get_healthcare_service_unit,
+			mark_invoiced_inpatient_occupancy,
+		)
 
 		frappe.db.sql("""delete from `tabInpatient Record`""")
 		patient, practitioner = create_healthcare_docs()
@@ -259,7 +280,10 @@
 		self.assertRaises(OverlapError, appointment.save)
 
 	def test_service_unit_capacity(self):
-		from erpnext.healthcare.doctype.patient_appointment.patient_appointment import MaximumCapacityError, OverlapError
+		from erpnext.healthcare.doctype.patient_appointment.patient_appointment import (
+			MaximumCapacityError,
+			OverlapError,
+		)
 		practitioner = create_practitioner()
 		capacity = 3
 		overlap_service_unit_type = create_service_unit_type(id=10, allow_appointments=1, overlap_appointments=1)
diff --git a/erpnext/healthcare/doctype/patient_assessment/patient_assessment.py b/erpnext/healthcare/doctype/patient_assessment/patient_assessment.py
index 7bad20d..90cb300 100644
--- a/erpnext/healthcare/doctype/patient_assessment/patient_assessment.py
+++ b/erpnext/healthcare/doctype/patient_assessment/patient_assessment.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 from frappe.model.mapper import get_mapped_doc
 
+
 class PatientAssessment(Document):
 	def validate(self):
 		self.set_total_score()
diff --git a/erpnext/healthcare/doctype/patient_assessment/test_patient_assessment.py b/erpnext/healthcare/doctype/patient_assessment/test_patient_assessment.py
index 3fda855..0ffbd1f 100644
--- a/erpnext/healthcare/doctype/patient_assessment/test_patient_assessment.py
+++ b/erpnext/healthcare/doctype/patient_assessment/test_patient_assessment.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestPatientAssessment(unittest.TestCase):
 	pass
diff --git a/erpnext/healthcare/doctype/patient_assessment_detail/patient_assessment_detail.py b/erpnext/healthcare/doctype/patient_assessment_detail/patient_assessment_detail.py
index 0519599..4da679b 100644
--- a/erpnext/healthcare/doctype/patient_assessment_detail/patient_assessment_detail.py
+++ b/erpnext/healthcare/doctype/patient_assessment_detail/patient_assessment_detail.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class PatientAssessmentDetail(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/patient_assessment_parameter/patient_assessment_parameter.py b/erpnext/healthcare/doctype/patient_assessment_parameter/patient_assessment_parameter.py
index b8e0074..783c537 100644
--- a/erpnext/healthcare/doctype/patient_assessment_parameter/patient_assessment_parameter.py
+++ b/erpnext/healthcare/doctype/patient_assessment_parameter/patient_assessment_parameter.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class PatientAssessmentParameter(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/patient_assessment_parameter/test_patient_assessment_parameter.py b/erpnext/healthcare/doctype/patient_assessment_parameter/test_patient_assessment_parameter.py
index e722f99..f06fffb 100644
--- a/erpnext/healthcare/doctype/patient_assessment_parameter/test_patient_assessment_parameter.py
+++ b/erpnext/healthcare/doctype/patient_assessment_parameter/test_patient_assessment_parameter.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestPatientAssessmentParameter(unittest.TestCase):
 	pass
diff --git a/erpnext/healthcare/doctype/patient_assessment_sheet/patient_assessment_sheet.py b/erpnext/healthcare/doctype/patient_assessment_sheet/patient_assessment_sheet.py
index 40da763..4686e9e 100644
--- a/erpnext/healthcare/doctype/patient_assessment_sheet/patient_assessment_sheet.py
+++ b/erpnext/healthcare/doctype/patient_assessment_sheet/patient_assessment_sheet.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class PatientAssessmentSheet(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/patient_assessment_template/patient_assessment_template.py b/erpnext/healthcare/doctype/patient_assessment_template/patient_assessment_template.py
index 083cab5..e0d8fca 100644
--- a/erpnext/healthcare/doctype/patient_assessment_template/patient_assessment_template.py
+++ b/erpnext/healthcare/doctype/patient_assessment_template/patient_assessment_template.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class PatientAssessmentTemplate(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/patient_assessment_template/test_patient_assessment_template.py b/erpnext/healthcare/doctype/patient_assessment_template/test_patient_assessment_template.py
index 86dbd54..7d639cb 100644
--- a/erpnext/healthcare/doctype/patient_assessment_template/test_patient_assessment_template.py
+++ b/erpnext/healthcare/doctype/patient_assessment_template/test_patient_assessment_template.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestPatientAssessmentTemplate(unittest.TestCase):
 	pass
diff --git a/erpnext/healthcare/doctype/patient_encounter/patient_encounter.py b/erpnext/healthcare/doctype/patient_encounter/patient_encounter.py
index c935274..2daa6c1 100644
--- a/erpnext/healthcare/doctype/patient_encounter/patient_encounter.py
+++ b/erpnext/healthcare/doctype/patient_encounter/patient_encounter.py
@@ -3,11 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
-from frappe.utils import cstr, getdate, add_days
 from frappe.model.mapper import get_mapped_doc
+from frappe.utils import add_days, getdate
 
 
 class PatientEncounter(Document):
diff --git a/erpnext/healthcare/doctype/patient_encounter/patient_encounter_dashboard.py b/erpnext/healthcare/doctype/patient_encounter/patient_encounter_dashboard.py
index 39e54f5..3b64d98 100644
--- a/erpnext/healthcare/doctype/patient_encounter/patient_encounter_dashboard.py
+++ b/erpnext/healthcare/doctype/patient_encounter/patient_encounter_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'encounter',
diff --git a/erpnext/healthcare/doctype/patient_encounter/test_patient_encounter.py b/erpnext/healthcare/doctype/patient_encounter/test_patient_encounter.py
index 9697682..fa643a3 100644
--- a/erpnext/healthcare/doctype/patient_encounter/test_patient_encounter.py
+++ b/erpnext/healthcare/doctype/patient_encounter/test_patient_encounter.py
@@ -2,9 +2,11 @@
 # Copyright (c) 2018, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
 
 import frappe
+
 from erpnext.healthcare.doctype.patient_encounter.patient_encounter import PatientEncounter
 
 
diff --git a/erpnext/healthcare/doctype/patient_encounter_diagnosis/patient_encounter_diagnosis.py b/erpnext/healthcare/doctype/patient_encounter_diagnosis/patient_encounter_diagnosis.py
index 34b0cf8..e4d2069 100644
--- a/erpnext/healthcare/doctype/patient_encounter_diagnosis/patient_encounter_diagnosis.py
+++ b/erpnext/healthcare/doctype/patient_encounter_diagnosis/patient_encounter_diagnosis.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class PatientEncounterDiagnosis(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/patient_encounter_symptom/patient_encounter_symptom.py b/erpnext/healthcare/doctype/patient_encounter_symptom/patient_encounter_symptom.py
index bdb7bb2..47f2a2b 100644
--- a/erpnext/healthcare/doctype/patient_encounter_symptom/patient_encounter_symptom.py
+++ b/erpnext/healthcare/doctype/patient_encounter_symptom/patient_encounter_symptom.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class PatientEncounterSymptom(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/patient_history_custom_document_type/patient_history_custom_document_type.py b/erpnext/healthcare/doctype/patient_history_custom_document_type/patient_history_custom_document_type.py
index f0a1f92..34e15dc 100644
--- a/erpnext/healthcare/doctype/patient_history_custom_document_type/patient_history_custom_document_type.py
+++ b/erpnext/healthcare/doctype/patient_history_custom_document_type/patient_history_custom_document_type.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class PatientHistoryCustomDocumentType(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/patient_history_settings/patient_history_settings.py b/erpnext/healthcare/doctype/patient_history_settings/patient_history_settings.py
index 9e0d3c3..b763591 100644
--- a/erpnext/healthcare/doctype/patient_history_settings/patient_history_settings.py
+++ b/erpnext/healthcare/doctype/patient_history_settings/patient_history_settings.py
@@ -3,13 +3,17 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import json
+
+import frappe
 from frappe import _
-from frappe.utils import cstr, cint
 from frappe.model.document import Document
+from frappe.utils import cint, cstr
+
 from erpnext.healthcare.page.patient_history.patient_history import get_patient_history_doctypes
 
+
 class PatientHistorySettings(Document):
 	def validate(self):
 		self.validate_submittable_doctypes()
diff --git a/erpnext/healthcare/doctype/patient_history_settings/test_patient_history_settings.py b/erpnext/healthcare/doctype/patient_history_settings/test_patient_history_settings.py
index 9169ea6..c37a2ad 100644
--- a/erpnext/healthcare/doctype/patient_history_settings/test_patient_history_settings.py
+++ b/erpnext/healthcare/doctype/patient_history_settings/test_patient_history_settings.py
@@ -3,12 +3,15 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
-import unittest
 import json
+import unittest
+
+import frappe
 from frappe.utils import getdate, strip_html
+
 from erpnext.healthcare.doctype.patient_appointment.test_patient_appointment import create_patient
 
+
 class TestPatientHistorySettings(unittest.TestCase):
 	def setUp(self):
 		dt = create_custom_doctype()
diff --git a/erpnext/healthcare/doctype/patient_history_standard_document_type/patient_history_standard_document_type.py b/erpnext/healthcare/doctype/patient_history_standard_document_type/patient_history_standard_document_type.py
index 2d94911..b7dd09b 100644
--- a/erpnext/healthcare/doctype/patient_history_standard_document_type/patient_history_standard_document_type.py
+++ b/erpnext/healthcare/doctype/patient_history_standard_document_type/patient_history_standard_document_type.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class PatientHistoryStandardDocumentType(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/patient_medical_record/patient_medical_record.py b/erpnext/healthcare/doctype/patient_medical_record/patient_medical_record.py
index 35e42bd..ac2cffa 100644
--- a/erpnext/healthcare/doctype/patient_medical_record/patient_medical_record.py
+++ b/erpnext/healthcare/doctype/patient_medical_record/patient_medical_record.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 
+
 class PatientMedicalRecord(Document):
 	def after_insert(self):
 		if self.reference_doctype == "Patient Medical Record" :
diff --git a/erpnext/healthcare/doctype/patient_medical_record/test_patient_medical_record.py b/erpnext/healthcare/doctype/patient_medical_record/test_patient_medical_record.py
index 5b7d8d6..099146c 100644
--- a/erpnext/healthcare/doctype/patient_medical_record/test_patient_medical_record.py
+++ b/erpnext/healthcare/doctype/patient_medical_record/test_patient_medical_record.py
@@ -2,11 +2,20 @@
 # Copyright (c) 2015, ESS LLP and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
+
 import frappe
 from frappe.utils import nowdate
-from erpnext.healthcare.doctype.patient_appointment.test_patient_appointment import create_encounter, create_healthcare_docs, create_appointment, create_medical_department
+
 from erpnext.accounts.doctype.pos_profile.test_pos_profile import make_pos_profile
+from erpnext.healthcare.doctype.patient_appointment.test_patient_appointment import (
+	create_appointment,
+	create_encounter,
+	create_healthcare_docs,
+	create_medical_department,
+)
+
 
 class TestPatientMedicalRecord(unittest.TestCase):
 	def setUp(self):
diff --git a/erpnext/healthcare/doctype/patient_relation/patient_relation.py b/erpnext/healthcare/doctype/patient_relation/patient_relation.py
index 150b962..17bc209 100644
--- a/erpnext/healthcare/doctype/patient_relation/patient_relation.py
+++ b/erpnext/healthcare/doctype/patient_relation/patient_relation.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class PatientRelation(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/practitioner_schedule/practitioner_schedule.py b/erpnext/healthcare/doctype/practitioner_schedule/practitioner_schedule.py
index 8bd0937..7fa31e5 100644
--- a/erpnext/healthcare/doctype/practitioner_schedule/practitioner_schedule.py
+++ b/erpnext/healthcare/doctype/practitioner_schedule/practitioner_schedule.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class PractitionerSchedule(Document):
 	def autoname(self):
 		self.name = self.schedule_name
diff --git a/erpnext/healthcare/doctype/practitioner_schedule/test_practitioner_schedule.py b/erpnext/healthcare/doctype/practitioner_schedule/test_practitioner_schedule.py
index 52638cb..1ecaa47 100644
--- a/erpnext/healthcare/doctype/practitioner_schedule/test_practitioner_schedule.py
+++ b/erpnext/healthcare/doctype/practitioner_schedule/test_practitioner_schedule.py
@@ -2,7 +2,9 @@
 # Copyright (c) 2018, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
 
+
 class TestPractitionerSchedule(unittest.TestCase):
 	pass
diff --git a/erpnext/healthcare/doctype/practitioner_service_unit_schedule/practitioner_service_unit_schedule.py b/erpnext/healthcare/doctype/practitioner_service_unit_schedule/practitioner_service_unit_schedule.py
index c18a440..4eba1fb 100644
--- a/erpnext/healthcare/doctype/practitioner_service_unit_schedule/practitioner_service_unit_schedule.py
+++ b/erpnext/healthcare/doctype/practitioner_service_unit_schedule/practitioner_service_unit_schedule.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class PractitionerServiceUnitSchedule(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/prescription_dosage/prescription_dosage.py b/erpnext/healthcare/doctype/prescription_dosage/prescription_dosage.py
index dea263d..19f9b70 100644
--- a/erpnext/healthcare/doctype/prescription_dosage/prescription_dosage.py
+++ b/erpnext/healthcare/doctype/prescription_dosage/prescription_dosage.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class PrescriptionDosage(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/prescription_dosage/test_prescription_dosage.py b/erpnext/healthcare/doctype/prescription_dosage/test_prescription_dosage.py
index e61a418..cabfd35 100644
--- a/erpnext/healthcare/doctype/prescription_dosage/test_prescription_dosage.py
+++ b/erpnext/healthcare/doctype/prescription_dosage/test_prescription_dosage.py
@@ -2,7 +2,9 @@
 # Copyright (c) 2017, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
 
+
 class TestPrescriptionDosage(unittest.TestCase):
 	pass
diff --git a/erpnext/healthcare/doctype/prescription_duration/prescription_duration.py b/erpnext/healthcare/doctype/prescription_duration/prescription_duration.py
index 96ddf8d..988276d 100644
--- a/erpnext/healthcare/doctype/prescription_duration/prescription_duration.py
+++ b/erpnext/healthcare/doctype/prescription_duration/prescription_duration.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 from frappe.utils import cstr
 
+
 class PrescriptionDuration(Document):
 	def autoname(self):
 		self.name = " ".join(filter(None,
diff --git a/erpnext/healthcare/doctype/prescription_duration/test_prescription_duration.py b/erpnext/healthcare/doctype/prescription_duration/test_prescription_duration.py
index fe5524c..197bb3e 100644
--- a/erpnext/healthcare/doctype/prescription_duration/test_prescription_duration.py
+++ b/erpnext/healthcare/doctype/prescription_duration/test_prescription_duration.py
@@ -2,7 +2,9 @@
 # Copyright (c) 2017, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
 
+
 class TestPrescriptionDuration(unittest.TestCase):
 	pass
diff --git a/erpnext/healthcare/doctype/procedure_prescription/procedure_prescription.py b/erpnext/healthcare/doctype/procedure_prescription/procedure_prescription.py
index 62ea9f1..f4d29fa 100644
--- a/erpnext/healthcare/doctype/procedure_prescription/procedure_prescription.py
+++ b/erpnext/healthcare/doctype/procedure_prescription/procedure_prescription.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class ProcedurePrescription(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/sample_collection/sample_collection.py b/erpnext/healthcare/doctype/sample_collection/sample_collection.py
index 461f809..7de6ac0 100644
--- a/erpnext/healthcare/doctype/sample_collection/sample_collection.py
+++ b/erpnext/healthcare/doctype/sample_collection/sample_collection.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
+from frappe import _
 from frappe.model.document import Document
 from frappe.utils import flt
-from frappe import _
+
 
 class SampleCollection(Document):
 	def validate(self):
diff --git a/erpnext/healthcare/doctype/sensitivity/sensitivity.py b/erpnext/healthcare/doctype/sensitivity/sensitivity.py
index bf7c36b..f61781d 100644
--- a/erpnext/healthcare/doctype/sensitivity/sensitivity.py
+++ b/erpnext/healthcare/doctype/sensitivity/sensitivity.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class Sensitivity(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/sensitivity/test_sensitivity.py b/erpnext/healthcare/doctype/sensitivity/test_sensitivity.py
index 1616d2d..c772c72 100644
--- a/erpnext/healthcare/doctype/sensitivity/test_sensitivity.py
+++ b/erpnext/healthcare/doctype/sensitivity/test_sensitivity.py
@@ -2,6 +2,7 @@
 # Copyright (c) 2015, ESS and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
 
 # test_records = frappe.get_test_records('Sensitivity')
diff --git a/erpnext/healthcare/doctype/sensitivity_test_result/sensitivity_test_result.py b/erpnext/healthcare/doctype/sensitivity_test_result/sensitivity_test_result.py
index 64f1e6c..53f7acc 100644
--- a/erpnext/healthcare/doctype/sensitivity_test_result/sensitivity_test_result.py
+++ b/erpnext/healthcare/doctype/sensitivity_test_result/sensitivity_test_result.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class SensitivityTestResult(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/therapy_plan/test_therapy_plan.py b/erpnext/healthcare/doctype/therapy_plan/test_therapy_plan.py
index 54e00ea..4f96f6a 100644
--- a/erpnext/healthcare/doctype/therapy_plan/test_therapy_plan.py
+++ b/erpnext/healthcare/doctype/therapy_plan/test_therapy_plan.py
@@ -3,13 +3,23 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import getdate, flt, nowdate
+
+import frappe
+from frappe.utils import flt, getdate, nowdate
+
+from erpnext.healthcare.doctype.patient_appointment.test_patient_appointment import (
+	create_appointment,
+	create_healthcare_docs,
+	create_medical_department,
+	create_patient,
+)
+from erpnext.healthcare.doctype.therapy_plan.therapy_plan import (
+	make_sales_invoice,
+	make_therapy_session,
+)
 from erpnext.healthcare.doctype.therapy_type.test_therapy_type import create_therapy_type
-from erpnext.healthcare.doctype.therapy_plan.therapy_plan import make_therapy_session, make_sales_invoice
-from erpnext.healthcare.doctype.patient_appointment.test_patient_appointment import \
-	create_healthcare_docs, create_patient, create_appointment, create_medical_department
+
 
 class TestTherapyPlan(unittest.TestCase):
 	def test_creation_on_encounter_submission(self):
diff --git a/erpnext/healthcare/doctype/therapy_plan/therapy_plan.py b/erpnext/healthcare/doctype/therapy_plan/therapy_plan.py
index e209660..6d63f39 100644
--- a/erpnext/healthcare/doctype/therapy_plan/therapy_plan.py
+++ b/erpnext/healthcare/doctype/therapy_plan/therapy_plan.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 from frappe.utils import flt, today
 
+
 class TherapyPlan(Document):
 	def validate(self):
 		self.set_totals()
diff --git a/erpnext/healthcare/doctype/therapy_plan/therapy_plan_dashboard.py b/erpnext/healthcare/doctype/therapy_plan/therapy_plan_dashboard.py
index 6526acd..25c8df1 100644
--- a/erpnext/healthcare/doctype/therapy_plan/therapy_plan_dashboard.py
+++ b/erpnext/healthcare/doctype/therapy_plan/therapy_plan_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'therapy_plan',
diff --git a/erpnext/healthcare/doctype/therapy_plan_detail/therapy_plan_detail.py b/erpnext/healthcare/doctype/therapy_plan_detail/therapy_plan_detail.py
index 44211f3..1842fc2 100644
--- a/erpnext/healthcare/doctype/therapy_plan_detail/therapy_plan_detail.py
+++ b/erpnext/healthcare/doctype/therapy_plan_detail/therapy_plan_detail.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class TherapyPlanDetail(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/therapy_plan_template/test_therapy_plan_template.py b/erpnext/healthcare/doctype/therapy_plan_template/test_therapy_plan_template.py
index 33ee29d..cd3d568 100644
--- a/erpnext/healthcare/doctype/therapy_plan_template/test_therapy_plan_template.py
+++ b/erpnext/healthcare/doctype/therapy_plan_template/test_therapy_plan_template.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestTherapyPlanTemplate(unittest.TestCase):
 	pass
diff --git a/erpnext/healthcare/doctype/therapy_plan_template/therapy_plan_template.py b/erpnext/healthcare/doctype/therapy_plan_template/therapy_plan_template.py
index 635d4be..f5512be 100644
--- a/erpnext/healthcare/doctype/therapy_plan_template/therapy_plan_template.py
+++ b/erpnext/healthcare/doctype/therapy_plan_template/therapy_plan_template.py
@@ -3,11 +3,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 from frappe.utils import cint, flt
+
 from erpnext.healthcare.doctype.therapy_type.therapy_type import make_item_price
 
+
 class TherapyPlanTemplate(Document):
 	def after_insert(self):
 		self.create_item_from_template()
diff --git a/erpnext/healthcare/doctype/therapy_plan_template/therapy_plan_template_dashboard.py b/erpnext/healthcare/doctype/therapy_plan_template/therapy_plan_template_dashboard.py
index c748fbf..def5c48 100644
--- a/erpnext/healthcare/doctype/therapy_plan_template/therapy_plan_template_dashboard.py
+++ b/erpnext/healthcare/doctype/therapy_plan_template/therapy_plan_template_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'therapy_plan_template',
diff --git a/erpnext/healthcare/doctype/therapy_plan_template_detail/therapy_plan_template_detail.py b/erpnext/healthcare/doctype/therapy_plan_template_detail/therapy_plan_template_detail.py
index 7b979fe..104c1bf 100644
--- a/erpnext/healthcare/doctype/therapy_plan_template_detail/therapy_plan_template_detail.py
+++ b/erpnext/healthcare/doctype/therapy_plan_template_detail/therapy_plan_template_detail.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class TherapyPlanTemplateDetail(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/therapy_session/test_therapy_session.py b/erpnext/healthcare/doctype/therapy_session/test_therapy_session.py
index 75bb8df..e4afacf 100644
--- a/erpnext/healthcare/doctype/therapy_session/test_therapy_session.py
+++ b/erpnext/healthcare/doctype/therapy_session/test_therapy_session.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestTherapySession(unittest.TestCase):
 	pass
diff --git a/erpnext/healthcare/doctype/therapy_session/therapy_session.py b/erpnext/healthcare/doctype/therapy_session/therapy_session.py
index 51f267f..915e6e4 100644
--- a/erpnext/healthcare/doctype/therapy_session/therapy_session.py
+++ b/erpnext/healthcare/doctype/therapy_session/therapy_session.py
@@ -3,14 +3,20 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import datetime
-from frappe.model.document import Document
-from frappe.utils import get_time, flt
-from frappe.model.mapper import get_mapped_doc
+
+import frappe
 from frappe import _
-from frappe.utils import cstr, getdate, get_link_to_form
-from erpnext.healthcare.doctype.healthcare_settings.healthcare_settings import get_receivable_account, get_income_account
+from frappe.model.document import Document
+from frappe.model.mapper import get_mapped_doc
+from frappe.utils import flt, get_link_to_form, get_time, getdate
+
+from erpnext.healthcare.doctype.healthcare_settings.healthcare_settings import (
+	get_income_account,
+	get_receivable_account,
+)
+
 
 class TherapySession(Document):
 	def validate(self):
diff --git a/erpnext/healthcare/doctype/therapy_session/therapy_session_dashboard.py b/erpnext/healthcare/doctype/therapy_session/therapy_session_dashboard.py
index 9de7e29..b8a3782 100644
--- a/erpnext/healthcare/doctype/therapy_session/therapy_session_dashboard.py
+++ b/erpnext/healthcare/doctype/therapy_session/therapy_session_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'therapy_session',
diff --git a/erpnext/healthcare/doctype/therapy_type/test_therapy_type.py b/erpnext/healthcare/doctype/therapy_type/test_therapy_type.py
index 80fc83f..23d5422 100644
--- a/erpnext/healthcare/doctype/therapy_type/test_therapy_type.py
+++ b/erpnext/healthcare/doctype/therapy_type/test_therapy_type.py
@@ -3,9 +3,11 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
+
 class TestTherapyType(unittest.TestCase):
 	def test_therapy_type_item(self):
 		therapy_type = create_therapy_type()
diff --git a/erpnext/healthcare/doctype/therapy_type/therapy_type.py b/erpnext/healthcare/doctype/therapy_type/therapy_type.py
index 3f6a36a..3517ef2 100644
--- a/erpnext/healthcare/doctype/therapy_type/therapy_type.py
+++ b/erpnext/healthcare/doctype/therapy_type/therapy_type.py
@@ -3,12 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import json
+
+import frappe
 from frappe import _
-from frappe.utils import cint
 from frappe.model.document import Document
 from frappe.model.rename_doc import rename_doc
+from frappe.utils import cint
+
 
 class TherapyType(Document):
 	def validate(self):
diff --git a/erpnext/healthcare/doctype/treatment_plan_template/test_treatment_plan_template.py b/erpnext/healthcare/doctype/treatment_plan_template/test_treatment_plan_template.py
index 21ede71..b8a1dd7 100644
--- a/erpnext/healthcare/doctype/treatment_plan_template/test_treatment_plan_template.py
+++ b/erpnext/healthcare/doctype/treatment_plan_template/test_treatment_plan_template.py
@@ -4,5 +4,6 @@
 # import frappe
 import unittest
 
+
 class TestTreatmentPlanTemplate(unittest.TestCase):
 	pass
diff --git a/erpnext/healthcare/doctype/treatment_plan_template/treatment_plan_template.py b/erpnext/healthcare/doctype/treatment_plan_template/treatment_plan_template.py
index a92e266..dbe0e9a 100644
--- a/erpnext/healthcare/doctype/treatment_plan_template/treatment_plan_template.py
+++ b/erpnext/healthcare/doctype/treatment_plan_template/treatment_plan_template.py
@@ -5,6 +5,7 @@
 from frappe import _
 from frappe.model.document import Document
 
+
 class TreatmentPlanTemplate(Document):
 	def validate(self):
 		self.validate_age()
diff --git a/erpnext/healthcare/doctype/treatment_plan_template_item/treatment_plan_template_item.py b/erpnext/healthcare/doctype/treatment_plan_template_item/treatment_plan_template_item.py
index 5f58b06..8b8d89f 100644
--- a/erpnext/healthcare/doctype/treatment_plan_template_item/treatment_plan_template_item.py
+++ b/erpnext/healthcare/doctype/treatment_plan_template_item/treatment_plan_template_item.py
@@ -4,5 +4,6 @@
 # import frappe
 from frappe.model.document import Document
 
+
 class TreatmentPlanTemplateItem(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/treatment_plan_template_practitioner/treatment_plan_template_practitioner.py b/erpnext/healthcare/doctype/treatment_plan_template_practitioner/treatment_plan_template_practitioner.py
index 6d34568..c2d08bc 100644
--- a/erpnext/healthcare/doctype/treatment_plan_template_practitioner/treatment_plan_template_practitioner.py
+++ b/erpnext/healthcare/doctype/treatment_plan_template_practitioner/treatment_plan_template_practitioner.py
@@ -4,5 +4,6 @@
 # import frappe
 from frappe.model.document import Document
 
+
 class TreatmentPlanTemplatePractitioner(Document):
 	pass
diff --git a/erpnext/healthcare/doctype/vital_signs/test_vital_signs.py b/erpnext/healthcare/doctype/vital_signs/test_vital_signs.py
index 5d3e007..22b52fb 100644
--- a/erpnext/healthcare/doctype/vital_signs/test_vital_signs.py
+++ b/erpnext/healthcare/doctype/vital_signs/test_vital_signs.py
@@ -2,6 +2,7 @@
 # Copyright (c) 2015, ESS LLP and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
 
 # test_records = frappe.get_test_records('Vital Signs')
diff --git a/erpnext/healthcare/doctype/vital_signs/vital_signs.py b/erpnext/healthcare/doctype/vital_signs/vital_signs.py
index 4bb3940..29dbeb4 100644
--- a/erpnext/healthcare/doctype/vital_signs/vital_signs.py
+++ b/erpnext/healthcare/doctype/vital_signs/vital_signs.py
@@ -3,10 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.document import Document
-from frappe.utils import cstr
 from frappe import _
+from frappe.model.document import Document
+
 
 class VitalSigns(Document):
 	def validate(self):
diff --git a/erpnext/healthcare/page/patient_history/patient_history.py b/erpnext/healthcare/page/patient_history/patient_history.py
index 4cdfd64..77d8846 100644
--- a/erpnext/healthcare/page/patient_history/patient_history.py
+++ b/erpnext/healthcare/page/patient_history/patient_history.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import json
+
+import frappe
 from frappe.utils import cint
-from erpnext.healthcare.utils import render_docs_as_html
+
 
 @frappe.whitelist()
 def get_feed(name, document_types=None, date_range=None, start=0, page_length=20):
diff --git a/erpnext/healthcare/page/patient_progress/patient_progress.py b/erpnext/healthcare/page/patient_progress/patient_progress.py
index 46bfb3d..c17f105 100644
--- a/erpnext/healthcare/page/patient_progress/patient_progress.py
+++ b/erpnext/healthcare/page/patient_progress/patient_progress.py
@@ -1,8 +1,10 @@
-import frappe
-from datetime import datetime
-from frappe import _
-from frappe.utils import getdate, get_timespan_date_range
 import json
+from datetime import datetime
+
+import frappe
+from frappe import _
+from frappe.utils import get_timespan_date_range, getdate
+
 
 @frappe.whitelist()
 def get_therapy_sessions_count(patient):
diff --git a/erpnext/healthcare/report/inpatient_medication_orders/inpatient_medication_orders.py b/erpnext/healthcare/report/inpatient_medication_orders/inpatient_medication_orders.py
index 28b60bd..2e809fb 100644
--- a/erpnext/healthcare/report/inpatient_medication_orders/inpatient_medication_orders.py
+++ b/erpnext/healthcare/report/inpatient_medication_orders/inpatient_medication_orders.py
@@ -2,8 +2,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from erpnext.healthcare.doctype.inpatient_medication_entry.inpatient_medication_entry import get_current_healthcare_service_unit
+
+from erpnext.healthcare.doctype.inpatient_medication_entry.inpatient_medication_entry import (
+	get_current_healthcare_service_unit,
+)
+
 
 def execute(filters=None):
 	columns = get_columns()
diff --git a/erpnext/healthcare/report/inpatient_medication_orders/test_inpatient_medication_orders.py b/erpnext/healthcare/report/inpatient_medication_orders/test_inpatient_medication_orders.py
index fae5ece..7f7bebf 100644
--- a/erpnext/healthcare/report/inpatient_medication_orders/test_inpatient_medication_orders.py
+++ b/erpnext/healthcare/report/inpatient_medication_orders/test_inpatient_medication_orders.py
@@ -2,14 +2,32 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import unittest
-import frappe
+
 import datetime
+import unittest
+
+import frappe
 from frappe.utils import getdate, now_datetime
-from erpnext.healthcare.doctype.inpatient_record.test_inpatient_record import create_patient, create_inpatient, get_healthcare_service_unit, mark_invoiced_inpatient_occupancy
-from erpnext.healthcare.doctype.inpatient_record.inpatient_record import admit_patient, discharge_patient, schedule_discharge
-from erpnext.healthcare.doctype.inpatient_medication_order.test_inpatient_medication_order import create_ipmo, create_ipme
-from erpnext.healthcare.report.inpatient_medication_orders.inpatient_medication_orders import execute
+
+from erpnext.healthcare.doctype.inpatient_medication_order.test_inpatient_medication_order import (
+	create_ipme,
+	create_ipmo,
+)
+from erpnext.healthcare.doctype.inpatient_record.inpatient_record import (
+	admit_patient,
+	discharge_patient,
+	schedule_discharge,
+)
+from erpnext.healthcare.doctype.inpatient_record.test_inpatient_record import (
+	create_inpatient,
+	create_patient,
+	get_healthcare_service_unit,
+	mark_invoiced_inpatient_occupancy,
+)
+from erpnext.healthcare.report.inpatient_medication_orders.inpatient_medication_orders import (
+	execute,
+)
+
 
 class TestInpatientMedicationOrders(unittest.TestCase):
 	@classmethod
diff --git a/erpnext/healthcare/report/lab_test_report/lab_test_report.py b/erpnext/healthcare/report/lab_test_report/lab_test_report.py
index ba4ca41..e2a53bb 100644
--- a/erpnext/healthcare/report/lab_test_report/lab_test_report.py
+++ b/erpnext/healthcare/report/lab_test_report/lab_test_report.py
@@ -2,8 +2,10 @@
 # License: See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe import msgprint, _
+from frappe import _, msgprint
+
 
 def execute(filters=None):
 	if not filters: filters = {}
diff --git a/erpnext/healthcare/report/patient_appointment_analytics/patient_appointment_analytics.py b/erpnext/healthcare/report/patient_appointment_analytics/patient_appointment_analytics.py
index 9a4840a..1afb5da 100644
--- a/erpnext/healthcare/report/patient_appointment_analytics/patient_appointment_analytics.py
+++ b/erpnext/healthcare/report/patient_appointment_analytics/patient_appointment_analytics.py
@@ -2,12 +2,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import getdate, flt, add_to_date, add_days
-from frappe import _ , scrub
+from frappe import _, scrub
+from frappe.utils import add_days, add_to_date, flt, getdate
 from six import iteritems
+
 from erpnext.accounts.utils import get_fiscal_year
 
+
 def execute(filters=None):
 	return Analytics(filters).run()
 
@@ -26,7 +29,7 @@
 		return self.columns, self.data, None, self.chart
 
 	def get_period_date_ranges(self):
-		from dateutil.relativedelta import relativedelta, MO
+		from dateutil.relativedelta import MO, relativedelta
 		from_date, to_date = getdate(self.filters.from_date), getdate(self.filters.to_date)
 
 		increment = {
diff --git a/erpnext/healthcare/utils.py b/erpnext/healthcare/utils.py
index 7c80bdb..cae3008 100644
--- a/erpnext/healthcare/utils.py
+++ b/erpnext/healthcare/utils.py
@@ -3,16 +3,20 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import math
-import frappe
+
 import json
+import math
+
+import frappe
 from frappe import _
+from frappe.utils import cstr, rounded, time_diff_in_hours
 from frappe.utils.formatters import format_value
-from frappe.utils import time_diff_in_hours, rounded, cstr
-from erpnext.healthcare.doctype.healthcare_settings.healthcare_settings import get_income_account
+
 from erpnext.healthcare.doctype.fee_validity.fee_validity import create_fee_validity
+from erpnext.healthcare.doctype.healthcare_settings.healthcare_settings import get_income_account
 from erpnext.healthcare.doctype.lab_test.lab_test import create_multiple
 
+
 @frappe.whitelist()
 def get_healthcare_services_to_invoice(patient, company):
 	patient = frappe.get_doc('Patient', patient)
@@ -339,7 +343,9 @@
 
 
 def get_appointment_type_service_item(appointment_type, department, is_inpatient):
-	from erpnext.healthcare.doctype.appointment_type.appointment_type import get_service_item_based_on_department
+	from erpnext.healthcare.doctype.appointment_type.appointment_type import (
+		get_service_item_based_on_department,
+	)
 
 	item_list = get_service_item_based_on_department(appointment_type, department)
 	service_item = None
diff --git a/erpnext/healthcare/web_form/lab_test/lab_test.py b/erpnext/healthcare/web_form/lab_test/lab_test.py
index 5a8c8a4..ec08985 100644
--- a/erpnext/healthcare/web_form/lab_test/lab_test.py
+++ b/erpnext/healthcare/web_form/lab_test/lab_test.py
@@ -2,6 +2,7 @@
 
 import frappe
 
+
 def get_context(context):
 	context.read_only = 1
 
diff --git a/erpnext/healthcare/web_form/patient_appointments/patient_appointments.py b/erpnext/healthcare/web_form/patient_appointments/patient_appointments.py
index 09bcb42..80c12fd 100644
--- a/erpnext/healthcare/web_form/patient_appointments/patient_appointments.py
+++ b/erpnext/healthcare/web_form/patient_appointments/patient_appointments.py
@@ -2,6 +2,7 @@
 
 import frappe
 
+
 def get_context(context):
 	context.read_only = 1
 
diff --git a/erpnext/healthcare/web_form/patient_registration/patient_registration.py b/erpnext/healthcare/web_form/patient_registration/patient_registration.py
index 1bc4d18..f57de91 100644
--- a/erpnext/healthcare/web_form/patient_registration/patient_registration.py
+++ b/erpnext/healthcare/web_form/patient_registration/patient_registration.py
@@ -1,5 +1,6 @@
 from __future__ import unicode_literals
 
+
 def get_context(context):
 	# do your magic here
 	pass
diff --git a/erpnext/healthcare/web_form/prescription/prescription.py b/erpnext/healthcare/web_form/prescription/prescription.py
index efdeaa9..f6f273a 100644
--- a/erpnext/healthcare/web_form/prescription/prescription.py
+++ b/erpnext/healthcare/web_form/prescription/prescription.py
@@ -2,6 +2,7 @@
 
 import frappe
 
+
 def get_context(context):
 	context.read_only = 1
 
diff --git a/erpnext/hooks.py b/erpnext/hooks.py
index b1a64f9..53f40bc 100644
--- a/erpnext/hooks.py
+++ b/erpnext/hooks.py
@@ -1,4 +1,5 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
 app_name = "erpnext"
diff --git a/erpnext/hotels/doctype/hotel_room/hotel_room.py b/erpnext/hotels/doctype/hotel_room/hotel_room.py
index 6a2fc02..93a62c9 100644
--- a/erpnext/hotels/doctype/hotel_room/hotel_room.py
+++ b/erpnext/hotels/doctype/hotel_room/hotel_room.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 
+
 class HotelRoom(Document):
 	def validate(self):
 		if not self.capacity:
diff --git a/erpnext/hotels/doctype/hotel_room/test_hotel_room.py b/erpnext/hotels/doctype/hotel_room/test_hotel_room.py
index e307b5a..4fedbd4 100644
--- a/erpnext/hotels/doctype/hotel_room/test_hotel_room.py
+++ b/erpnext/hotels/doctype/hotel_room/test_hotel_room.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
 test_dependencies = ["Hotel Room Package"]
 test_records = [
 	dict(doctype="Hotel Room", name="1001",
diff --git a/erpnext/hotels/doctype/hotel_room_amenity/hotel_room_amenity.py b/erpnext/hotels/doctype/hotel_room_amenity/hotel_room_amenity.py
index 69da007..982b3ef 100644
--- a/erpnext/hotels/doctype/hotel_room_amenity/hotel_room_amenity.py
+++ b/erpnext/hotels/doctype/hotel_room_amenity/hotel_room_amenity.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class HotelRoomAmenity(Document):
 	pass
diff --git a/erpnext/hotels/doctype/hotel_room_package/hotel_room_package.py b/erpnext/hotels/doctype/hotel_room_package/hotel_room_package.py
index 8a62eea..1864081 100644
--- a/erpnext/hotels/doctype/hotel_room_package/hotel_room_package.py
+++ b/erpnext/hotels/doctype/hotel_room_package/hotel_room_package.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 
+
 class HotelRoomPackage(Document):
 	def validate(self):
 		if not self.item:
diff --git a/erpnext/hotels/doctype/hotel_room_package/test_hotel_room_package.py b/erpnext/hotels/doctype/hotel_room_package/test_hotel_room_package.py
index ebf7f2b..fe5d79d 100644
--- a/erpnext/hotels/doctype/hotel_room_package/test_hotel_room_package.py
+++ b/erpnext/hotels/doctype/hotel_room_package/test_hotel_room_package.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
 test_records = [
 	dict(doctype='Item', item_code='Breakfast',
 		item_group='Products', is_stock_item=0),
diff --git a/erpnext/hotels/doctype/hotel_room_pricing/hotel_room_pricing.py b/erpnext/hotels/doctype/hotel_room_pricing/hotel_room_pricing.py
index 8eee0f2..5797fef 100644
--- a/erpnext/hotels/doctype/hotel_room_pricing/hotel_room_pricing.py
+++ b/erpnext/hotels/doctype/hotel_room_pricing/hotel_room_pricing.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class HotelRoomPricing(Document):
 	pass
diff --git a/erpnext/hotels/doctype/hotel_room_pricing/test_hotel_room_pricing.py b/erpnext/hotels/doctype/hotel_room_pricing/test_hotel_room_pricing.py
index b73fd44..72030c6 100644
--- a/erpnext/hotels/doctype/hotel_room_pricing/test_hotel_room_pricing.py
+++ b/erpnext/hotels/doctype/hotel_room_pricing/test_hotel_room_pricing.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
 test_dependencies = ["Hotel Room Package"]
 test_records = [
 	dict(doctype="Hotel Room Pricing", enabled=1,
diff --git a/erpnext/hotels/doctype/hotel_room_pricing_item/hotel_room_pricing_item.py b/erpnext/hotels/doctype/hotel_room_pricing_item/hotel_room_pricing_item.py
index 6bf01bf..4a344df 100644
--- a/erpnext/hotels/doctype/hotel_room_pricing_item/hotel_room_pricing_item.py
+++ b/erpnext/hotels/doctype/hotel_room_pricing_item/hotel_room_pricing_item.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class HotelRoomPricingItem(Document):
 	pass
diff --git a/erpnext/hotels/doctype/hotel_room_pricing_package/hotel_room_pricing_package.py b/erpnext/hotels/doctype/hotel_room_pricing_package/hotel_room_pricing_package.py
index 9ae9fcf..f594ac7 100644
--- a/erpnext/hotels/doctype/hotel_room_pricing_package/hotel_room_pricing_package.py
+++ b/erpnext/hotels/doctype/hotel_room_pricing_package/hotel_room_pricing_package.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class HotelRoomPricingPackage(Document):
 	pass
diff --git a/erpnext/hotels/doctype/hotel_room_pricing_package/test_hotel_room_pricing_package.py b/erpnext/hotels/doctype/hotel_room_pricing_package/test_hotel_room_pricing_package.py
index fec1c86..ea258cc 100644
--- a/erpnext/hotels/doctype/hotel_room_pricing_package/test_hotel_room_pricing_package.py
+++ b/erpnext/hotels/doctype/hotel_room_pricing_package/test_hotel_room_pricing_package.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestHotelRoomPricingPackage(unittest.TestCase):
 	pass
diff --git a/erpnext/hotels/doctype/hotel_room_reservation/hotel_room_reservation.py b/erpnext/hotels/doctype/hotel_room_reservation/hotel_room_reservation.py
index a8ebe86..4944862 100644
--- a/erpnext/hotels/doctype/hotel_room_reservation/hotel_room_reservation.py
+++ b/erpnext/hotels/doctype/hotel_room_reservation/hotel_room_reservation.py
@@ -3,10 +3,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, json
-from frappe.model.document import Document
+
+import json
+
+import frappe
 from frappe import _
-from frappe.utils import date_diff, add_days, flt
+from frappe.model.document import Document
+from frappe.utils import add_days, date_diff, flt
+
 
 class HotelRoomUnavailableError(frappe.ValidationError): pass
 class HotelRoomPricingNotSetError(frappe.ValidationError): pass
diff --git a/erpnext/hotels/doctype/hotel_room_reservation/test_hotel_room_reservation.py b/erpnext/hotels/doctype/hotel_room_reservation/test_hotel_room_reservation.py
index d497996..e03005c 100644
--- a/erpnext/hotels/doctype/hotel_room_reservation/test_hotel_room_reservation.py
+++ b/erpnext/hotels/doctype/hotel_room_reservation/test_hotel_room_reservation.py
@@ -3,9 +3,15 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from erpnext.hotels.doctype.hotel_room_reservation.hotel_room_reservation import HotelRoomPricingNotSetError, HotelRoomUnavailableError
+
+import frappe
+
+from erpnext.hotels.doctype.hotel_room_reservation.hotel_room_reservation import (
+	HotelRoomPricingNotSetError,
+	HotelRoomUnavailableError,
+)
+
 test_dependencies = ["Hotel Room Package", "Hotel Room Pricing", "Hotel Room"]
 
 class TestHotelRoomReservation(unittest.TestCase):
diff --git a/erpnext/hotels/doctype/hotel_room_reservation_item/hotel_room_reservation_item.py b/erpnext/hotels/doctype/hotel_room_reservation_item/hotel_room_reservation_item.py
index 3406fae..0cf8547 100644
--- a/erpnext/hotels/doctype/hotel_room_reservation_item/hotel_room_reservation_item.py
+++ b/erpnext/hotels/doctype/hotel_room_reservation_item/hotel_room_reservation_item.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class HotelRoomReservationItem(Document):
 	pass
diff --git a/erpnext/hotels/doctype/hotel_room_type/hotel_room_type.py b/erpnext/hotels/doctype/hotel_room_type/hotel_room_type.py
index 1fc1303..610cf18 100644
--- a/erpnext/hotels/doctype/hotel_room_type/hotel_room_type.py
+++ b/erpnext/hotels/doctype/hotel_room_type/hotel_room_type.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class HotelRoomType(Document):
 	pass
diff --git a/erpnext/hotels/doctype/hotel_room_type/test_hotel_room_type.py b/erpnext/hotels/doctype/hotel_room_type/test_hotel_room_type.py
index 3b243e9..6dba7b7 100644
--- a/erpnext/hotels/doctype/hotel_room_type/test_hotel_room_type.py
+++ b/erpnext/hotels/doctype/hotel_room_type/test_hotel_room_type.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestHotelRoomType(unittest.TestCase):
 	pass
diff --git a/erpnext/hotels/doctype/hotel_settings/hotel_settings.py b/erpnext/hotels/doctype/hotel_settings/hotel_settings.py
index d78bca1..f8f8fe9 100644
--- a/erpnext/hotels/doctype/hotel_settings/hotel_settings.py
+++ b/erpnext/hotels/doctype/hotel_settings/hotel_settings.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class HotelSettings(Document):
 	pass
diff --git a/erpnext/hotels/doctype/hotel_settings/test_hotel_settings.py b/erpnext/hotels/doctype/hotel_settings/test_hotel_settings.py
index a081acc..5cf58b9 100644
--- a/erpnext/hotels/doctype/hotel_settings/test_hotel_settings.py
+++ b/erpnext/hotels/doctype/hotel_settings/test_hotel_settings.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestHotelSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/hotels/report/hotel_room_occupancy/hotel_room_occupancy.py b/erpnext/hotels/report/hotel_room_occupancy/hotel_room_occupancy.py
index 259edb9..f02baeb 100644
--- a/erpnext/hotels/report/hotel_room_occupancy/hotel_room_occupancy.py
+++ b/erpnext/hotels/report/hotel_room_occupancy/hotel_room_occupancy.py
@@ -2,12 +2,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import add_days, date_diff
 
 from erpnext.hotels.doctype.hotel_room_reservation.hotel_room_reservation import get_rooms_booked
 
+
 def execute(filters=None):
 	columns = get_columns(filters)
 	data = get_data(filters)
diff --git a/erpnext/hr/doctype/appointment_letter/appointment_letter.py b/erpnext/hr/doctype/appointment_letter/appointment_letter.py
index 85b82c5..b9a8ec6 100644
--- a/erpnext/hr/doctype/appointment_letter/appointment_letter.py
+++ b/erpnext/hr/doctype/appointment_letter/appointment_letter.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 
+
 class AppointmentLetter(Document):
 	pass
 
diff --git a/erpnext/hr/doctype/appointment_letter/test_appointment_letter.py b/erpnext/hr/doctype/appointment_letter/test_appointment_letter.py
index b9ce981..88637b9 100644
--- a/erpnext/hr/doctype/appointment_letter/test_appointment_letter.py
+++ b/erpnext/hr/doctype/appointment_letter/test_appointment_letter.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestAppointmentLetter(unittest.TestCase):
 	pass
diff --git a/erpnext/hr/doctype/appointment_letter_content/appointment_letter_content.py b/erpnext/hr/doctype/appointment_letter_content/appointment_letter_content.py
index a1a49e5..f4db456 100644
--- a/erpnext/hr/doctype/appointment_letter_content/appointment_letter_content.py
+++ b/erpnext/hr/doctype/appointment_letter_content/appointment_letter_content.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class AppointmentLettercontent(Document):
 	pass
diff --git a/erpnext/hr/doctype/appointment_letter_template/appointment_letter_template.py b/erpnext/hr/doctype/appointment_letter_template/appointment_letter_template.py
index c23881f..acb5c1f 100644
--- a/erpnext/hr/doctype/appointment_letter_template/appointment_letter_template.py
+++ b/erpnext/hr/doctype/appointment_letter_template/appointment_letter_template.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class AppointmentLetterTemplate(Document):
 	pass
diff --git a/erpnext/hr/doctype/appointment_letter_template/test_appointment_letter_template.py b/erpnext/hr/doctype/appointment_letter_template/test_appointment_letter_template.py
index 3d061ac..46dd3e1 100644
--- a/erpnext/hr/doctype/appointment_letter_template/test_appointment_letter_template.py
+++ b/erpnext/hr/doctype/appointment_letter_template/test_appointment_letter_template.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestAppointmentLetterTemplate(unittest.TestCase):
 	pass
diff --git a/erpnext/hr/doctype/appraisal/appraisal.py b/erpnext/hr/doctype/appraisal/appraisal.py
index c2ed457..96a4ffa 100644
--- a/erpnext/hr/doctype/appraisal/appraisal.py
+++ b/erpnext/hr/doctype/appraisal/appraisal.py
@@ -2,15 +2,16 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
+import frappe
+from frappe import _
+from frappe.model.document import Document
+from frappe.model.mapper import get_mapped_doc
 from frappe.utils import flt, getdate
 
-from frappe import _
-from frappe.model.mapper import get_mapped_doc
-from frappe.model.document import Document
 from erpnext.hr.utils import set_employee_name, validate_active_employee
 
+
 class Appraisal(Document):
 	def validate(self):
 		if not self.status:
diff --git a/erpnext/hr/doctype/appraisal/test_appraisal.py b/erpnext/hr/doctype/appraisal/test_appraisal.py
index f70dc48..cf2bd7c 100644
--- a/erpnext/hr/doctype/appraisal/test_appraisal.py
+++ b/erpnext/hr/doctype/appraisal/test_appraisal.py
@@ -2,7 +2,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Appraisal')
diff --git a/erpnext/hr/doctype/appraisal_goal/appraisal_goal.py b/erpnext/hr/doctype/appraisal_goal/appraisal_goal.py
index 11d9f39..d9789a0 100644
--- a/erpnext/hr/doctype/appraisal_goal/appraisal_goal.py
+++ b/erpnext/hr/doctype/appraisal_goal/appraisal_goal.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class AppraisalGoal(Document):
 	pass
diff --git a/erpnext/hr/doctype/appraisal_template/appraisal_template.py b/erpnext/hr/doctype/appraisal_template/appraisal_template.py
index d0dfad4..d10a0de 100644
--- a/erpnext/hr/doctype/appraisal_template/appraisal_template.py
+++ b/erpnext/hr/doctype/appraisal_template/appraisal_template.py
@@ -2,11 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe.utils import cint, flt
-from frappe import _
 
+import frappe
+from frappe import _
 from frappe.model.document import Document
+from frappe.utils import cint, flt
+
 
 class AppraisalTemplate(Document):
 	def validate(self):
diff --git a/erpnext/hr/doctype/appraisal_template/appraisal_template_dashboard.py b/erpnext/hr/doctype/appraisal_template/appraisal_template_dashboard.py
index 392b370..b8d0494 100644
--- a/erpnext/hr/doctype/appraisal_template/appraisal_template_dashboard.py
+++ b/erpnext/hr/doctype/appraisal_template/appraisal_template_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
      return {
diff --git a/erpnext/hr/doctype/appraisal_template/test_appraisal_template.py b/erpnext/hr/doctype/appraisal_template/test_appraisal_template.py
index e3029d9..a814ec8 100644
--- a/erpnext/hr/doctype/appraisal_template/test_appraisal_template.py
+++ b/erpnext/hr/doctype/appraisal_template/test_appraisal_template.py
@@ -2,7 +2,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Appraisal Template')
diff --git a/erpnext/hr/doctype/appraisal_template_goal/appraisal_template_goal.py b/erpnext/hr/doctype/appraisal_template_goal/appraisal_template_goal.py
index b3c5704..1b15fbd 100644
--- a/erpnext/hr/doctype/appraisal_template_goal/appraisal_template_goal.py
+++ b/erpnext/hr/doctype/appraisal_template_goal/appraisal_template_goal.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class AppraisalTemplateGoal(Document):
 	pass
diff --git a/erpnext/hr/doctype/attendance/attendance.py b/erpnext/hr/doctype/attendance/attendance.py
index c1a7c8f..002f9bb 100644
--- a/erpnext/hr/doctype/attendance/attendance.py
+++ b/erpnext/hr/doctype/attendance/attendance.py
@@ -2,14 +2,15 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
-from frappe.utils import getdate, nowdate
+import frappe
 from frappe import _
 from frappe.model.document import Document
-from frappe.utils import cstr, get_datetime, formatdate
+from frappe.utils import cstr, formatdate, get_datetime, getdate, nowdate
+
 from erpnext.hr.utils import validate_active_employee
 
+
 class Attendance(Document):
 	def validate(self):
 		from erpnext.controllers.status_updater import validate_status
@@ -134,7 +135,6 @@
 @frappe.whitelist()
 def mark_bulk_attendance(data):
 	import json
-	from pprint import pprint
 	if isinstance(data, str):
 		data = json.loads(data)
 	data = frappe._dict(data)
diff --git a/erpnext/hr/doctype/attendance/attendance_dashboard.py b/erpnext/hr/doctype/attendance/attendance_dashboard.py
index 5dd9403..bbe67df 100644
--- a/erpnext/hr/doctype/attendance/attendance_dashboard.py
+++ b/erpnext/hr/doctype/attendance/attendance_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
 	return {
diff --git a/erpnext/hr/doctype/attendance/test_attendance.py b/erpnext/hr/doctype/attendance/test_attendance.py
index 838b704..ab44377 100644
--- a/erpnext/hr/doctype/attendance/test_attendance.py
+++ b/erpnext/hr/doctype/attendance/test_attendance.py
@@ -2,8 +2,9 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
+import frappe
 from frappe.utils import nowdate
 
 test_records = frappe.get_test_records('Attendance')
diff --git a/erpnext/hr/doctype/attendance_request/attendance_request.py b/erpnext/hr/doctype/attendance_request/attendance_request.py
index 7f88fed..1e74296 100644
--- a/erpnext/hr/doctype/attendance_request/attendance_request.py
+++ b/erpnext/hr/doctype/attendance_request/attendance_request.py
@@ -3,12 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
-from frappe.utils import date_diff, add_days, getdate
+from frappe.utils import add_days, date_diff, getdate
+
 from erpnext.hr.doctype.employee.employee import is_holiday
-from erpnext.hr.utils import validate_dates, validate_active_employee
+from erpnext.hr.utils import validate_active_employee, validate_dates
+
 
 class AttendanceRequest(Document):
 	def validate(self):
diff --git a/erpnext/hr/doctype/attendance_request/attendance_request_dashboard.py b/erpnext/hr/doctype/attendance_request/attendance_request_dashboard.py
index 2d3eb00..8feb6f2 100644
--- a/erpnext/hr/doctype/attendance_request/attendance_request_dashboard.py
+++ b/erpnext/hr/doctype/attendance_request/attendance_request_dashboard.py
@@ -1,5 +1,6 @@
 from __future__ import unicode_literals
 
+
 def get_data():
 	return {
 		'fieldname':  'attendance_request',
diff --git a/erpnext/hr/doctype/attendance_request/test_attendance_request.py b/erpnext/hr/doctype/attendance_request/test_attendance_request.py
index 9e668aa..a9db74c 100644
--- a/erpnext/hr/doctype/attendance_request/test_attendance_request.py
+++ b/erpnext/hr/doctype/attendance_request/test_attendance_request.py
@@ -3,11 +3,12 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import nowdate
 from datetime import date
 
+import frappe
+from frappe.utils import nowdate
+
 test_dependencies = ["Employee"]
 
 class TestAttendanceRequest(unittest.TestCase):
diff --git a/erpnext/hr/doctype/branch/branch.py b/erpnext/hr/doctype/branch/branch.py
index a847c8e..c770dc3 100644
--- a/erpnext/hr/doctype/branch/branch.py
+++ b/erpnext/hr/doctype/branch/branch.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class Branch(Document):
 	pass
diff --git a/erpnext/hr/doctype/branch/test_branch.py b/erpnext/hr/doctype/branch/test_branch.py
index 807698b..7bf9b39 100644
--- a/erpnext/hr/doctype/branch/test_branch.py
+++ b/erpnext/hr/doctype/branch/test_branch.py
@@ -2,6 +2,6 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-
 import frappe
+
 test_records = frappe.get_test_records('Branch')
diff --git a/erpnext/hr/doctype/compensatory_leave_request/compensatory_leave_request.py b/erpnext/hr/doctype/compensatory_leave_request/compensatory_leave_request.py
index 3db8165..f24483b 100644
--- a/erpnext/hr/doctype/compensatory_leave_request/compensatory_leave_request.py
+++ b/erpnext/hr/doctype/compensatory_leave_request/compensatory_leave_request.py
@@ -3,12 +3,21 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import date_diff, add_days, getdate, cint, format_date
 from frappe.model.document import Document
-from erpnext.hr.utils import validate_dates, validate_overlap, get_leave_period, validate_active_employee, \
-	create_additional_leave_ledger_entry, get_holiday_dates_for_employee
+from frappe.utils import add_days, cint, date_diff, format_date, getdate
+
+from erpnext.hr.utils import (
+	create_additional_leave_ledger_entry,
+	get_holiday_dates_for_employee,
+	get_leave_period,
+	validate_active_employee,
+	validate_dates,
+	validate_overlap,
+)
+
 
 class CompensatoryLeaveRequest(Document):
 
diff --git a/erpnext/hr/doctype/compensatory_leave_request/test_compensatory_leave_request.py b/erpnext/hr/doctype/compensatory_leave_request/test_compensatory_leave_request.py
index 3b99c57..95bdd51 100644
--- a/erpnext/hr/doctype/compensatory_leave_request/test_compensatory_leave_request.py
+++ b/erpnext/hr/doctype/compensatory_leave_request/test_compensatory_leave_request.py
@@ -3,12 +3,14 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import today, add_months, add_days
+
+import frappe
+from frappe.utils import add_days, add_months, today
+
 from erpnext.hr.doctype.attendance_request.test_attendance_request import get_employee
-from erpnext.hr.doctype.leave_period.test_leave_period import create_leave_period
 from erpnext.hr.doctype.leave_application.leave_application import get_leave_balance_on
+from erpnext.hr.doctype.leave_period.test_leave_period import create_leave_period
 
 test_dependencies = ["Employee"]
 
diff --git a/erpnext/hr/doctype/daily_work_summary/daily_work_summary.py b/erpnext/hr/doctype/daily_work_summary/daily_work_summary.py
index 76c7a14..92cf6aa 100644
--- a/erpnext/hr/doctype/daily_work_summary/daily_work_summary.py
+++ b/erpnext/hr/doctype/daily_work_summary/daily_work_summary.py
@@ -3,11 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.document import Document
-from frappe import _
 from email_reply_parser import EmailReplyParser
-from erpnext.hr.doctype.employee.employee import is_holiday
+from frappe import _
+from frappe.model.document import Document
 from frappe.utils import global_date_format
 from six import string_types
 
diff --git a/erpnext/hr/doctype/daily_work_summary/test_daily_work_summary.py b/erpnext/hr/doctype/daily_work_summary/test_daily_work_summary.py
index 3868479..bed12e3 100644
--- a/erpnext/hr/doctype/daily_work_summary/test_daily_work_summary.py
+++ b/erpnext/hr/doctype/daily_work_summary/test_daily_work_summary.py
@@ -4,8 +4,9 @@
 from __future__ import unicode_literals
 
 import os
-import frappe
 import unittest
+
+import frappe
 import frappe.utils
 
 # test_records = frappe.get_test_records('Daily Work Summary')
@@ -64,8 +65,7 @@
 			filters=dict(email=('!=', 'test@example.com')))
 		self.setup_groups(hour)
 
-		from erpnext.hr.doctype.daily_work_summary_group.daily_work_summary_group \
-			import trigger_emails
+		from erpnext.hr.doctype.daily_work_summary_group.daily_work_summary_group import trigger_emails
 		trigger_emails()
 
 		# check if emails are created
diff --git a/erpnext/hr/doctype/daily_work_summary_group/daily_work_summary_group.py b/erpnext/hr/doctype/daily_work_summary_group/daily_work_summary_group.py
index ece331a..152b1a9 100644
--- a/erpnext/hr/doctype/daily_work_summary_group/daily_work_summary_group.py
+++ b/erpnext/hr/doctype/daily_work_summary_group/daily_work_summary_group.py
@@ -3,13 +3,16 @@
 # # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.document import Document
 import frappe.utils
 from frappe import _
+from frappe.model.document import Document
+
 from erpnext.hr.doctype.daily_work_summary.daily_work_summary import get_user_emails_from_group
 from erpnext.hr.doctype.holiday_list.holiday_list import is_holiday
 
+
 class DailyWorkSummaryGroup(Document):
 	def validate(self):
 		if self.users:
diff --git a/erpnext/hr/doctype/daily_work_summary_group_user/daily_work_summary_group_user.py b/erpnext/hr/doctype/daily_work_summary_group_user/daily_work_summary_group_user.py
index eefcc0c..d69a7fb 100644
--- a/erpnext/hr/doctype/daily_work_summary_group_user/daily_work_summary_group_user.py
+++ b/erpnext/hr/doctype/daily_work_summary_group_user/daily_work_summary_group_user.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class DailyWorkSummaryGroupUser(Document):
 	pass
diff --git a/erpnext/hr/doctype/department/department.py b/erpnext/hr/doctype/department/department.py
index 539a360..b4771b3 100644
--- a/erpnext/hr/doctype/department/department.py
+++ b/erpnext/hr/doctype/department/department.py
@@ -2,10 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.utils.nestedset import NestedSet, get_root_of
+
 from erpnext.utilities.transaction_base import delete_events
-from frappe.model.document import Document
+
 
 class Department(NestedSet):
 	nsm_parent_field = 'parent_department'
diff --git a/erpnext/hr/doctype/department/test_department.py b/erpnext/hr/doctype/department/test_department.py
index e4f6645..2fb3b95 100644
--- a/erpnext/hr/doctype/department/test_department.py
+++ b/erpnext/hr/doctype/department/test_department.py
@@ -1,9 +1,11 @@
 # Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
-import frappe
+
 import unittest
 
+import frappe
+
 test_ignore = ["Leave Block List"]
 class TestDepartment(unittest.TestCase):
     def test_remove_department_data(self):
diff --git a/erpnext/hr/doctype/department_approver/department_approver.py b/erpnext/hr/doctype/department_approver/department_approver.py
index d337959..113ea18 100644
--- a/erpnext/hr/doctype/department_approver/department_approver.py
+++ b/erpnext/hr/doctype/department_approver/department_approver.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
 
+
 class DepartmentApprover(Document):
 	pass
 
diff --git a/erpnext/hr/doctype/designation/designation.py b/erpnext/hr/doctype/designation/designation.py
index a3f84aa..0291a99 100644
--- a/erpnext/hr/doctype/designation/designation.py
+++ b/erpnext/hr/doctype/designation/designation.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class Designation(Document):
 	pass
diff --git a/erpnext/hr/doctype/designation/test_designation.py b/erpnext/hr/doctype/designation/test_designation.py
index 2778862..33aa243 100644
--- a/erpnext/hr/doctype/designation/test_designation.py
+++ b/erpnext/hr/doctype/designation/test_designation.py
@@ -2,8 +2,8 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-
 import frappe
+
 # test_records = frappe.get_test_records('Designation')
 
 def create_designation(**args):
diff --git a/erpnext/hr/doctype/designation_skill/designation_skill.py b/erpnext/hr/doctype/designation_skill/designation_skill.py
index c37d21f..2074dc9 100644
--- a/erpnext/hr/doctype/designation_skill/designation_skill.py
+++ b/erpnext/hr/doctype/designation_skill/designation_skill.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class DesignationSkill(Document):
 	pass
diff --git a/erpnext/hr/doctype/driver/driver.py b/erpnext/hr/doctype/driver/driver.py
index 2cd22cd..5c428b5 100644
--- a/erpnext/hr/doctype/driver/driver.py
+++ b/erpnext/hr/doctype/driver/driver.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class Driver(Document):
 	pass
diff --git a/erpnext/hr/doctype/driver/test_driver.py b/erpnext/hr/doctype/driver/test_driver.py
index 4bc4a8f..fa36237 100644
--- a/erpnext/hr/doctype/driver/test_driver.py
+++ b/erpnext/hr/doctype/driver/test_driver.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestDriver(unittest.TestCase):
 	pass
diff --git a/erpnext/hr/doctype/driving_license_category/driving_license_category.py b/erpnext/hr/doctype/driving_license_category/driving_license_category.py
index 33ba138..63ac418 100644
--- a/erpnext/hr/doctype/driving_license_category/driving_license_category.py
+++ b/erpnext/hr/doctype/driving_license_category/driving_license_category.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class DrivingLicenseCategory(Document):
 	pass
diff --git a/erpnext/hr/doctype/employee/employee.py b/erpnext/hr/doctype/employee/employee.py
index 643f3da..79e8f61 100755
--- a/erpnext/hr/doctype/employee/employee.py
+++ b/erpnext/hr/doctype/employee/employee.py
@@ -1,15 +1,21 @@
 # Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 import frappe
-
-from frappe.utils import getdate, validate_email_address, today, add_years, cstr
+from frappe import _, scrub, throw
 from frappe.model.naming import set_name_by_naming_series
-from frappe import throw, _, scrub
-from frappe.permissions import add_user_permission, remove_user_permission, \
-	set_user_permission_if_allowed, has_permission, get_doc_permissions
-from erpnext.utilities.transaction_base import delete_events
+from frappe.permissions import (
+	add_user_permission,
+	get_doc_permissions,
+	has_permission,
+	remove_user_permission,
+	set_user_permission_if_allowed,
+)
+from frappe.utils import add_years, cstr, getdate, today, validate_email_address
 from frappe.utils.nestedset import NestedSet
 
+from erpnext.utilities.transaction_base import delete_events
+
+
 class EmployeeUserDisabledError(frappe.ValidationError):
 	pass
 class InactiveEmployeeStatusError(frappe.ValidationError):
diff --git a/erpnext/hr/doctype/employee/employee_dashboard.py b/erpnext/hr/doctype/employee/employee_dashboard.py
index e853bee..ce307be 100644
--- a/erpnext/hr/doctype/employee/employee_dashboard.py
+++ b/erpnext/hr/doctype/employee/employee_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'heatmap': True,
diff --git a/erpnext/hr/doctype/employee/employee_reminders.py b/erpnext/hr/doctype/employee/employee_reminders.py
index 2155c02..fc01866 100644
--- a/erpnext/hr/doctype/employee/employee_reminders.py
+++ b/erpnext/hr/doctype/employee/employee_reminders.py
@@ -3,10 +3,12 @@
 
 import frappe
 from frappe import _
-from frappe.utils import comma_sep, getdate, today, add_months, add_days
+from frappe.utils import add_days, add_months, comma_sep, getdate, today
+
 from erpnext.hr.doctype.employee.employee import get_all_employee_emails, get_employee_email
 from erpnext.hr.utils import get_holidays_for_employee
 
+
 # -----------------
 # HOLIDAY REMINDERS
 # -----------------
diff --git a/erpnext/hr/doctype/employee/test_employee.py b/erpnext/hr/doctype/employee/test_employee.py
index 5feb6de..8d6dfa2 100644
--- a/erpnext/hr/doctype/employee/test_employee.py
+++ b/erpnext/hr/doctype/employee/test_employee.py
@@ -1,10 +1,12 @@
 # Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 
-import frappe
-import erpnext
 import unittest
+
+import frappe
 import frappe.utils
+
+import erpnext
 from erpnext.hr.doctype.employee.employee import InactiveEmployeeStatusError
 
 test_records = frappe.get_test_records('Employee')
@@ -23,9 +25,9 @@
 		self.assertRaises(InactiveEmployeeStatusError, employee1_doc.save)
 
 	def test_employee_status_inactive(self):
-		from erpnext.payroll.doctype.salary_structure.test_salary_structure import make_salary_structure
-		from erpnext.payroll.doctype.salary_structure.salary_structure import make_salary_slip
 		from erpnext.payroll.doctype.salary_slip.test_salary_slip import make_holiday_list
+		from erpnext.payroll.doctype.salary_structure.salary_structure import make_salary_slip
+		from erpnext.payroll.doctype.salary_structure.test_salary_structure import make_salary_structure
 
 		employee = make_employee("test_employee_status@company.com")
 		employee_doc = frappe.get_doc("Employee", employee)
diff --git a/erpnext/hr/doctype/employee/test_employee_reminders.py b/erpnext/hr/doctype/employee/test_employee_reminders.py
index f46a3d1..52c0098 100644
--- a/erpnext/hr/doctype/employee/test_employee_reminders.py
+++ b/erpnext/hr/doctype/employee/test_employee_reminders.py
@@ -1,11 +1,12 @@
 # Copyright (c) 2021, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 
-import frappe
 import unittest
-
-from frappe.utils import getdate
 from datetime import timedelta
+
+import frappe
+from frappe.utils import getdate
+
 from erpnext.hr.doctype.employee.test_employee import make_employee
 from erpnext.hr.doctype.hr_settings.hr_settings import set_proceed_with_frequency_change
 
@@ -84,7 +85,10 @@
 		employee.company = "_Test Company"
 		employee.save()
 
-		from erpnext.hr.doctype.employee.employee_reminders import get_employees_who_are_born_today, send_birthday_reminders
+		from erpnext.hr.doctype.employee.employee_reminders import (
+			get_employees_who_are_born_today,
+			send_birthday_reminders,
+		)
 
 		employees_born_today = get_employees_who_are_born_today()
 		self.assertTrue(employees_born_today.get("_Test Company"))
@@ -105,7 +109,10 @@
 		employee.company = "_Test Company"
 		employee.save()
 
-		from erpnext.hr.doctype.employee.employee_reminders import get_employees_having_an_event_today, send_work_anniversary_reminders
+		from erpnext.hr.doctype.employee.employee_reminders import (
+			get_employees_having_an_event_today,
+			send_work_anniversary_reminders,
+		)
 
 		employees_having_work_anniversary = get_employees_having_an_event_today('work_anniversary')
 		self.assertTrue(employees_having_work_anniversary.get("_Test Company"))
@@ -120,8 +127,8 @@
 		self.assertTrue("Subject: Work Anniversary Reminder" in email_queue[0].message)
 
 	def test_send_holidays_reminder_in_advance(self):
-		from erpnext.hr.utils import get_holidays_for_employee
 		from erpnext.hr.doctype.employee.employee_reminders import send_holidays_reminder_in_advance
+		from erpnext.hr.utils import get_holidays_for_employee
 
 		# Get HR settings and enable advance holiday reminders
 		hr_settings = frappe.get_doc("HR Settings", "HR Settings")
@@ -147,6 +154,7 @@
 
 	def test_advance_holiday_reminders_monthly(self):
 		from erpnext.hr.doctype.employee.employee_reminders import send_reminders_in_advance_monthly
+
 		# Get HR settings and enable advance holiday reminders
 		hr_settings = frappe.get_doc("HR Settings", "HR Settings")
 		hr_settings.send_holiday_reminders = 1
@@ -161,6 +169,7 @@
 
 	def test_advance_holiday_reminders_weekly(self):
 		from erpnext.hr.doctype.employee.employee_reminders import send_reminders_in_advance_weekly
+
 		# Get HR settings and enable advance holiday reminders
 		hr_settings = frappe.get_doc("HR Settings", "HR Settings")
 		hr_settings.send_holiday_reminders = 1
diff --git a/erpnext/hr/doctype/employee_advance/employee_advance.py b/erpnext/hr/doctype/employee_advance/employee_advance.py
index cbb3cc8..87d42d3 100644
--- a/erpnext/hr/doctype/employee_advance/employee_advance.py
+++ b/erpnext/hr/doctype/employee_advance/employee_advance.py
@@ -3,13 +3,17 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
+
+import frappe
 from frappe import _
 from frappe.model.document import Document
 from frappe.utils import flt, nowdate
+
+import erpnext
 from erpnext.accounts.doctype.journal_entry.journal_entry import get_default_bank_cash_account
 from erpnext.hr.utils import validate_active_employee
 
+
 class EmployeeAdvanceOverPayment(frappe.ValidationError):
 	pass
 
diff --git a/erpnext/hr/doctype/employee_advance/employee_advance_dashboard.py b/erpnext/hr/doctype/employee_advance/employee_advance_dashboard.py
index 2f493e2..17d5bd2 100644
--- a/erpnext/hr/doctype/employee_advance/employee_advance_dashboard.py
+++ b/erpnext/hr/doctype/employee_advance/employee_advance_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
 	return {
diff --git a/erpnext/hr/doctype/employee_advance/test_employee_advance.py b/erpnext/hr/doctype/employee_advance/test_employee_advance.py
index 100968b..f8e5f53 100644
--- a/erpnext/hr/doctype/employee_advance/test_employee_advance.py
+++ b/erpnext/hr/doctype/employee_advance/test_employee_advance.py
@@ -3,12 +3,18 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe, erpnext
 import unittest
+
+import frappe
 from frappe.utils import nowdate
-from erpnext.hr.doctype.employee_advance.employee_advance import make_bank_entry
-from erpnext.hr.doctype.employee_advance.employee_advance import EmployeeAdvanceOverPayment
+
+import erpnext
 from erpnext.hr.doctype.employee.test_employee import make_employee
+from erpnext.hr.doctype.employee_advance.employee_advance import (
+	EmployeeAdvanceOverPayment,
+	make_bank_entry,
+)
+
 
 class TestEmployeeAdvance(unittest.TestCase):
 	def test_paid_amount_and_status(self):
diff --git a/erpnext/hr/doctype/employee_attendance_tool/employee_attendance_tool.py b/erpnext/hr/doctype/employee_attendance_tool/employee_attendance_tool.py
index 16c1a32..7c751a4 100644
--- a/erpnext/hr/doctype/employee_attendance_tool/employee_attendance_tool.py
+++ b/erpnext/hr/doctype/employee_attendance_tool/employee_attendance_tool.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import json
+
+import frappe
 from frappe.model.document import Document
 from frappe.utils import getdate
 
diff --git a/erpnext/hr/doctype/employee_boarding_activity/employee_boarding_activity.py b/erpnext/hr/doctype/employee_boarding_activity/employee_boarding_activity.py
index 496f165..48c85f4 100644
--- a/erpnext/hr/doctype/employee_boarding_activity/employee_boarding_activity.py
+++ b/erpnext/hr/doctype/employee_boarding_activity/employee_boarding_activity.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class EmployeeBoardingActivity(Document):
 	pass
diff --git a/erpnext/hr/doctype/employee_checkin/employee_checkin.py b/erpnext/hr/doctype/employee_checkin/employee_checkin.py
index 6c0cd4f..1ae9b1f 100644
--- a/erpnext/hr/doctype/employee_checkin/employee_checkin.py
+++ b/erpnext/hr/doctype/employee_checkin/employee_checkin.py
@@ -3,14 +3,18 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe.utils import now, cint, get_datetime
-from frappe.model.document import Document
-from frappe import _
 
-from erpnext.hr.doctype.shift_assignment.shift_assignment import get_actual_start_end_datetime_of_shift
+import frappe
+from frappe import _
+from frappe.model.document import Document
+from frappe.utils import cint, get_datetime
+
+from erpnext.hr.doctype.shift_assignment.shift_assignment import (
+	get_actual_start_end_datetime_of_shift,
+)
 from erpnext.hr.utils import validate_active_employee
 
+
 class EmployeeCheckin(Document):
 	def validate(self):
 		validate_active_employee(self.employee)
diff --git a/erpnext/hr/doctype/employee_checkin/test_employee_checkin.py b/erpnext/hr/doctype/employee_checkin/test_employee_checkin.py
index 7ba511f..71c6498 100644
--- a/erpnext/hr/doctype/employee_checkin/test_employee_checkin.py
+++ b/erpnext/hr/doctype/employee_checkin/test_employee_checkin.py
@@ -3,13 +3,19 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
-from frappe.utils import now_datetime, nowdate, to_timedelta
 import unittest
 from datetime import timedelta
 
-from erpnext.hr.doctype.employee_checkin.employee_checkin import add_log_based_on_employee_field, mark_attendance_and_link_log, calculate_working_hours
+import frappe
+from frappe.utils import now_datetime, nowdate
+
 from erpnext.hr.doctype.employee.test_employee import make_employee
+from erpnext.hr.doctype.employee_checkin.employee_checkin import (
+	add_log_based_on_employee_field,
+	calculate_working_hours,
+	mark_attendance_and_link_log,
+)
+
 
 class TestEmployeeCheckin(unittest.TestCase):
 	def test_add_log_based_on_employee_field(self):
diff --git a/erpnext/hr/doctype/employee_education/employee_education.py b/erpnext/hr/doctype/employee_education/employee_education.py
index f0a7617..cadf5d6 100644
--- a/erpnext/hr/doctype/employee_education/employee_education.py
+++ b/erpnext/hr/doctype/employee_education/employee_education.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class EmployeeEducation(Document):
 	pass
diff --git a/erpnext/hr/doctype/employee_external_work_history/employee_external_work_history.py b/erpnext/hr/doctype/employee_external_work_history/employee_external_work_history.py
index 517ef57..4d0e8d9 100644
--- a/erpnext/hr/doctype/employee_external_work_history/employee_external_work_history.py
+++ b/erpnext/hr/doctype/employee_external_work_history/employee_external_work_history.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class EmployeeExternalWorkHistory(Document):
 	pass
diff --git a/erpnext/hr/doctype/employee_grade/employee_grade.py b/erpnext/hr/doctype/employee_grade/employee_grade.py
index 42a9f16..b097038 100644
--- a/erpnext/hr/doctype/employee_grade/employee_grade.py
+++ b/erpnext/hr/doctype/employee_grade/employee_grade.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class EmployeeGrade(Document):
 	pass
diff --git a/erpnext/hr/doctype/employee_grade/employee_grade_dashboard.py b/erpnext/hr/doctype/employee_grade/employee_grade_dashboard.py
index df67910..92d9fa0 100644
--- a/erpnext/hr/doctype/employee_grade/employee_grade_dashboard.py
+++ b/erpnext/hr/doctype/employee_grade/employee_grade_dashboard.py
@@ -1,5 +1,6 @@
 from __future__ import unicode_literals
 
+
 def get_data():
 	return {
 		'transactions': [
diff --git a/erpnext/hr/doctype/employee_grade/test_employee_grade.py b/erpnext/hr/doctype/employee_grade/test_employee_grade.py
index 93058cf..cd4fcb5 100644
--- a/erpnext/hr/doctype/employee_grade/test_employee_grade.py
+++ b/erpnext/hr/doctype/employee_grade/test_employee_grade.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestEmployeeGrade(unittest.TestCase):
 	pass
diff --git a/erpnext/hr/doctype/employee_grievance/employee_grievance.py b/erpnext/hr/doctype/employee_grievance/employee_grievance.py
index 1705582..fd9a33b 100644
--- a/erpnext/hr/doctype/employee_grievance/employee_grievance.py
+++ b/erpnext/hr/doctype/employee_grievance/employee_grievance.py
@@ -5,6 +5,7 @@
 from frappe import _, bold
 from frappe.model.document import Document
 
+
 class EmployeeGrievance(Document):
 	def on_submit(self):
 		if self.status not in ["Invalid", "Resolved"]:
diff --git a/erpnext/hr/doctype/employee_grievance/test_employee_grievance.py b/erpnext/hr/doctype/employee_grievance/test_employee_grievance.py
index ed897ee..e2d0002 100644
--- a/erpnext/hr/doctype/employee_grievance/test_employee_grievance.py
+++ b/erpnext/hr/doctype/employee_grievance/test_employee_grievance.py
@@ -1,10 +1,14 @@
 # Copyright (c) 2021, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 
-import frappe
 import unittest
+
+import frappe
 from frappe.utils import today
+
 from erpnext.hr.doctype.employee.test_employee import make_employee
+
+
 class TestEmployeeGrievance(unittest.TestCase):
 	def test_create_employee_grievance(self):
 		create_employee_grievance()
diff --git a/erpnext/hr/doctype/employee_group/employee_group.py b/erpnext/hr/doctype/employee_group/employee_group.py
index 3025877..b2fe5eb 100644
--- a/erpnext/hr/doctype/employee_group/employee_group.py
+++ b/erpnext/hr/doctype/employee_group/employee_group.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class EmployeeGroup(Document):
 	pass
diff --git a/erpnext/hr/doctype/employee_group/test_employee_group.py b/erpnext/hr/doctype/employee_group/test_employee_group.py
index 26a61c4..053e840 100644
--- a/erpnext/hr/doctype/employee_group/test_employee_group.py
+++ b/erpnext/hr/doctype/employee_group/test_employee_group.py
@@ -2,10 +2,14 @@
 # Copyright (c) 2018, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
-import frappe
+
 import unittest
+
+import frappe
+
 from erpnext.hr.doctype.employee.test_employee import make_employee
 
+
 class TestEmployeeGroup(unittest.TestCase):
 	pass
 
diff --git a/erpnext/hr/doctype/employee_group_table/employee_group_table.py b/erpnext/hr/doctype/employee_group_table/employee_group_table.py
index 816611d..d9407a9 100644
--- a/erpnext/hr/doctype/employee_group_table/employee_group_table.py
+++ b/erpnext/hr/doctype/employee_group_table/employee_group_table.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class EmployeeGroupTable(Document):
 	pass
diff --git a/erpnext/hr/doctype/employee_health_insurance/employee_health_insurance.py b/erpnext/hr/doctype/employee_health_insurance/employee_health_insurance.py
index abc01ef..4f2d1a0 100644
--- a/erpnext/hr/doctype/employee_health_insurance/employee_health_insurance.py
+++ b/erpnext/hr/doctype/employee_health_insurance/employee_health_insurance.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class EmployeeHealthInsurance(Document):
 	pass
diff --git a/erpnext/hr/doctype/employee_health_insurance/test_employee_health_insurance.py b/erpnext/hr/doctype/employee_health_insurance/test_employee_health_insurance.py
index f0787f5..38e3ee3 100644
--- a/erpnext/hr/doctype/employee_health_insurance/test_employee_health_insurance.py
+++ b/erpnext/hr/doctype/employee_health_insurance/test_employee_health_insurance.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestEmployeeHealthInsurance(unittest.TestCase):
 	pass
diff --git a/erpnext/hr/doctype/employee_internal_work_history/employee_internal_work_history.py b/erpnext/hr/doctype/employee_internal_work_history/employee_internal_work_history.py
index 2f385a8..6076abb 100644
--- a/erpnext/hr/doctype/employee_internal_work_history/employee_internal_work_history.py
+++ b/erpnext/hr/doctype/employee_internal_work_history/employee_internal_work_history.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class EmployeeInternalWorkHistory(Document):
 	pass
diff --git a/erpnext/hr/doctype/employee_onboarding/employee_onboarding.py b/erpnext/hr/doctype/employee_onboarding/employee_onboarding.py
index ca9b298..e96447b 100644
--- a/erpnext/hr/doctype/employee_onboarding/employee_onboarding.py
+++ b/erpnext/hr/doctype/employee_onboarding/employee_onboarding.py
@@ -3,11 +3,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from erpnext.controllers.employee_boarding_controller import EmployeeBoardingController
 from frappe.model.mapper import get_mapped_doc
 
+from erpnext.controllers.employee_boarding_controller import EmployeeBoardingController
+
+
 class IncompleteTaskError(frappe.ValidationError): pass
 
 class EmployeeOnboarding(EmployeeBoardingController):
diff --git a/erpnext/hr/doctype/employee_onboarding/test_employee_onboarding.py b/erpnext/hr/doctype/employee_onboarding/test_employee_onboarding.py
index ea46aa2..eae600d 100644
--- a/erpnext/hr/doctype/employee_onboarding/test_employee_onboarding.py
+++ b/erpnext/hr/doctype/employee_onboarding/test_employee_onboarding.py
@@ -3,13 +3,18 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
+import frappe
 from frappe.utils import getdate
-from erpnext.hr.doctype.employee_onboarding.employee_onboarding import make_employee
-from erpnext.payroll.doctype.salary_slip.test_salary_slip import make_holiday_list
-from erpnext.hr.doctype.employee_onboarding.employee_onboarding import IncompleteTaskError
+
+from erpnext.hr.doctype.employee_onboarding.employee_onboarding import (
+	IncompleteTaskError,
+	make_employee,
+)
 from erpnext.hr.doctype.job_offer.test_job_offer import create_job_offer
+from erpnext.payroll.doctype.salary_slip.test_salary_slip import make_holiday_list
+
 
 class TestEmployeeOnboarding(unittest.TestCase):
 	def setUp(self):
diff --git a/erpnext/hr/doctype/employee_onboarding_template/employee_onboarding_template.py b/erpnext/hr/doctype/employee_onboarding_template/employee_onboarding_template.py
index 6f1c316..a46b3cd 100644
--- a/erpnext/hr/doctype/employee_onboarding_template/employee_onboarding_template.py
+++ b/erpnext/hr/doctype/employee_onboarding_template/employee_onboarding_template.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class EmployeeOnboardingTemplate(Document):
 	pass
diff --git a/erpnext/hr/doctype/employee_onboarding_template/employee_onboarding_template_dashboard.py b/erpnext/hr/doctype/employee_onboarding_template/employee_onboarding_template_dashboard.py
index ab0eb2f..1d2e8ae 100644
--- a/erpnext/hr/doctype/employee_onboarding_template/employee_onboarding_template_dashboard.py
+++ b/erpnext/hr/doctype/employee_onboarding_template/employee_onboarding_template_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
      return {
diff --git a/erpnext/hr/doctype/employee_onboarding_template/test_employee_onboarding_template.py b/erpnext/hr/doctype/employee_onboarding_template/test_employee_onboarding_template.py
index f4b5b88..92a328b 100644
--- a/erpnext/hr/doctype/employee_onboarding_template/test_employee_onboarding_template.py
+++ b/erpnext/hr/doctype/employee_onboarding_template/test_employee_onboarding_template.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestEmployeeOnboardingTemplate(unittest.TestCase):
 	pass
diff --git a/erpnext/hr/doctype/employee_promotion/employee_promotion.py b/erpnext/hr/doctype/employee_promotion/employee_promotion.py
index a3a6183..164d48b 100644
--- a/erpnext/hr/doctype/employee_promotion/employee_promotion.py
+++ b/erpnext/hr/doctype/employee_promotion/employee_promotion.py
@@ -3,12 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
 from frappe.utils import getdate
+
 from erpnext.hr.utils import update_employee, validate_active_employee
 
+
 class EmployeePromotion(Document):
 	def validate(self):
 		validate_active_employee(self.employee)
diff --git a/erpnext/hr/doctype/employee_promotion/test_employee_promotion.py b/erpnext/hr/doctype/employee_promotion/test_employee_promotion.py
index 9e7d318..39af6ff 100644
--- a/erpnext/hr/doctype/employee_promotion/test_employee_promotion.py
+++ b/erpnext/hr/doctype/employee_promotion/test_employee_promotion.py
@@ -3,11 +3,14 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import getdate, add_days
+
+import frappe
+from frappe.utils import add_days, getdate
+
 from erpnext.payroll.doctype.salary_structure.test_salary_structure import make_employee
 
+
 class TestEmployeePromotion(unittest.TestCase):
 	def setUp(self):
 		self.employee = make_employee("employee@promotions.com")
diff --git a/erpnext/hr/doctype/employee_property_history/employee_property_history.py b/erpnext/hr/doctype/employee_property_history/employee_property_history.py
index fb67852..9e25492 100644
--- a/erpnext/hr/doctype/employee_property_history/employee_property_history.py
+++ b/erpnext/hr/doctype/employee_property_history/employee_property_history.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class EmployeePropertyHistory(Document):
 	pass
diff --git a/erpnext/hr/doctype/employee_referral/employee_referral.py b/erpnext/hr/doctype/employee_referral/employee_referral.py
index 547a95e..5cb5bb5 100644
--- a/erpnext/hr/doctype/employee_referral/employee_referral.py
+++ b/erpnext/hr/doctype/employee_referral/employee_referral.py
@@ -3,12 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import get_link_to_form
 from frappe.model.document import Document
+from frappe.utils import get_link_to_form
+
 from erpnext.hr.utils import validate_active_employee
 
+
 class EmployeeReferral(Document):
 	def validate(self):
 		validate_active_employee(self.referrer)
@@ -56,6 +59,7 @@
 @frappe.whitelist()
 def create_additional_salary(doc):
 	import json
+
 	from six import string_types
 
 	if isinstance(doc, string_types):
diff --git a/erpnext/hr/doctype/employee_referral/employee_referral_dashboard.py b/erpnext/hr/doctype/employee_referral/employee_referral_dashboard.py
index caca296..85d6c20 100644
--- a/erpnext/hr/doctype/employee_referral/employee_referral_dashboard.py
+++ b/erpnext/hr/doctype/employee_referral/employee_referral_dashboard.py
@@ -1,5 +1,6 @@
 from __future__ import unicode_literals
 
+
 def get_data():
 	return {
 		'fieldname': 'employee_referral',
diff --git a/erpnext/hr/doctype/employee_referral/test_employee_referral.py b/erpnext/hr/doctype/employee_referral/test_employee_referral.py
index 599f326..d0ee2fc 100644
--- a/erpnext/hr/doctype/employee_referral/test_employee_referral.py
+++ b/erpnext/hr/doctype/employee_referral/test_employee_referral.py
@@ -3,12 +3,18 @@
 # See license.txt
 from __future__ import unicode_literals
 
+import unittest
+
 import frappe
 from frappe.utils import today
+
 from erpnext.hr.doctype.designation.test_designation import create_designation
-from erpnext.hr.doctype.employee_referral.employee_referral import create_job_applicant, create_additional_salary
 from erpnext.hr.doctype.employee.test_employee import make_employee
-import unittest
+from erpnext.hr.doctype.employee_referral.employee_referral import (
+	create_additional_salary,
+	create_job_applicant,
+)
+
 
 class TestEmployeeReferral(unittest.TestCase):
 	def test_workflow_and_status_sync(self):
diff --git a/erpnext/hr/doctype/employee_separation/employee_separation.py b/erpnext/hr/doctype/employee_separation/employee_separation.py
index 8afee25..ad279e8 100644
--- a/erpnext/hr/doctype/employee_separation/employee_separation.py
+++ b/erpnext/hr/doctype/employee_separation/employee_separation.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from erpnext.controllers.employee_boarding_controller import EmployeeBoardingController
 
+
 class EmployeeSeparation(EmployeeBoardingController):
 	def validate(self):
 		super(EmployeeSeparation, self).validate()
diff --git a/erpnext/hr/doctype/employee_separation/test_employee_separation.py b/erpnext/hr/doctype/employee_separation/test_employee_separation.py
index 2c11cbb..c7068dd 100644
--- a/erpnext/hr/doctype/employee_separation/test_employee_separation.py
+++ b/erpnext/hr/doctype/employee_separation/test_employee_separation.py
@@ -3,9 +3,10 @@
 # See license.txt
 from __future__ import unicode_literals
 
+import unittest
+
 import frappe
 from frappe.utils import getdate
-import unittest
 
 test_dependencies = ['Employee Onboarding']
 
diff --git a/erpnext/hr/doctype/employee_separation_template/employee_separation_template.py b/erpnext/hr/doctype/employee_separation_template/employee_separation_template.py
index 0508fc4..7a263dc 100644
--- a/erpnext/hr/doctype/employee_separation_template/employee_separation_template.py
+++ b/erpnext/hr/doctype/employee_separation_template/employee_separation_template.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class EmployeeSeparationTemplate(Document):
 	pass
diff --git a/erpnext/hr/doctype/employee_separation_template/employee_separation_template_dashboard.py b/erpnext/hr/doctype/employee_separation_template/employee_separation_template_dashboard.py
index 75f985c..970ba26 100644
--- a/erpnext/hr/doctype/employee_separation_template/employee_separation_template_dashboard.py
+++ b/erpnext/hr/doctype/employee_separation_template/employee_separation_template_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
      return {
diff --git a/erpnext/hr/doctype/employee_separation_template/test_employee_separation_template.py b/erpnext/hr/doctype/employee_separation_template/test_employee_separation_template.py
index 3fd3d39..4c91a79 100644
--- a/erpnext/hr/doctype/employee_separation_template/test_employee_separation_template.py
+++ b/erpnext/hr/doctype/employee_separation_template/test_employee_separation_template.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestEmployeeSeparationTemplate(unittest.TestCase):
 	pass
diff --git a/erpnext/hr/doctype/employee_skill/employee_skill.py b/erpnext/hr/doctype/employee_skill/employee_skill.py
index ac05fba..6f860c6 100644
--- a/erpnext/hr/doctype/employee_skill/employee_skill.py
+++ b/erpnext/hr/doctype/employee_skill/employee_skill.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class EmployeeSkill(Document):
 	pass
diff --git a/erpnext/hr/doctype/employee_skill_map/employee_skill_map.py b/erpnext/hr/doctype/employee_skill_map/employee_skill_map.py
index 073f02f..d93c22f 100644
--- a/erpnext/hr/doctype/employee_skill_map/employee_skill_map.py
+++ b/erpnext/hr/doctype/employee_skill_map/employee_skill_map.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class EmployeeSkillMap(Document):
 	pass
diff --git a/erpnext/hr/doctype/employee_training/employee_training.py b/erpnext/hr/doctype/employee_training/employee_training.py
index 810796d..068116a 100644
--- a/erpnext/hr/doctype/employee_training/employee_training.py
+++ b/erpnext/hr/doctype/employee_training/employee_training.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class EmployeeTraining(Document):
 	pass
diff --git a/erpnext/hr/doctype/employee_transfer/employee_transfer.py b/erpnext/hr/doctype/employee_transfer/employee_transfer.py
index c200774..b1f6609 100644
--- a/erpnext/hr/doctype/employee_transfer/employee_transfer.py
+++ b/erpnext/hr/doctype/employee_transfer/employee_transfer.py
@@ -3,12 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
 from frappe.utils import getdate
+
 from erpnext.hr.utils import update_employee
 
+
 class EmployeeTransfer(Document):
 	def before_submit(self):
 		if getdate(self.transfer_date) > getdate():
diff --git a/erpnext/hr/doctype/employee_transfer/test_employee_transfer.py b/erpnext/hr/doctype/employee_transfer/test_employee_transfer.py
index 93fc7a2..ad2f3ad 100644
--- a/erpnext/hr/doctype/employee_transfer/test_employee_transfer.py
+++ b/erpnext/hr/doctype/employee_transfer/test_employee_transfer.py
@@ -3,11 +3,14 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import getdate, add_days
+
+import frappe
+from frappe.utils import add_days, getdate
+
 from erpnext.hr.doctype.employee.test_employee import make_employee
 
+
 class TestEmployeeTransfer(unittest.TestCase):
 	def setUp(self):
 		make_employee("employee2@transfers.com")
diff --git a/erpnext/hr/doctype/employee_transfer_property/employee_transfer_property.py b/erpnext/hr/doctype/employee_transfer_property/employee_transfer_property.py
index 1a665dc..f67fd7c 100644
--- a/erpnext/hr/doctype/employee_transfer_property/employee_transfer_property.py
+++ b/erpnext/hr/doctype/employee_transfer_property/employee_transfer_property.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class EmployeeTransferProperty(Document):
 	pass
diff --git a/erpnext/hr/doctype/employee_transfer_property/test_employee_transfer_property.py b/erpnext/hr/doctype/employee_transfer_property/test_employee_transfer_property.py
index 39c20a6..287dac6 100644
--- a/erpnext/hr/doctype/employee_transfer_property/test_employee_transfer_property.py
+++ b/erpnext/hr/doctype/employee_transfer_property/test_employee_transfer_property.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestEmployeeTransferProperty(unittest.TestCase):
 	pass
diff --git a/erpnext/hr/doctype/employment_type/employment_type.py b/erpnext/hr/doctype/employment_type/employment_type.py
index 00aa6bb..e2a5557 100644
--- a/erpnext/hr/doctype/employment_type/employment_type.py
+++ b/erpnext/hr/doctype/employment_type/employment_type.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class EmploymentType(Document):
 	pass
diff --git a/erpnext/hr/doctype/employment_type/test_employment_type.py b/erpnext/hr/doctype/employment_type/test_employment_type.py
index 0297ffa..2ba4e8c 100644
--- a/erpnext/hr/doctype/employment_type/test_employment_type.py
+++ b/erpnext/hr/doctype/employment_type/test_employment_type.py
@@ -2,6 +2,6 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-
 import frappe
+
 test_records = frappe.get_test_records('Employment Type')
diff --git a/erpnext/hr/doctype/expense_claim/expense_claim.py b/erpnext/hr/doctype/expense_claim/expense_claim.py
index 4dc089c..d785db7 100644
--- a/erpnext/hr/doctype/expense_claim/expense_claim.py
+++ b/erpnext/hr/doctype/expense_claim/expense_claim.py
@@ -2,17 +2,17 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
+
+import frappe
 from frappe import _
-from frappe.utils import get_fullname, flt, cstr, get_link_to_form
-from frappe.model.document import Document
-from erpnext.hr.utils import set_employee_name, share_doc_with_approver, validate_active_employee
-from erpnext.accounts.party import get_party_account
-from erpnext.accounts.general_ledger import make_gl_entries
+from frappe.utils import cstr, flt, get_link_to_form
+
+import erpnext
 from erpnext.accounts.doctype.sales_invoice.sales_invoice import get_bank_cash_account
+from erpnext.accounts.general_ledger import make_gl_entries
 from erpnext.controllers.accounts_controller import AccountsController
-from frappe.utils.csvutils import getlink
-from erpnext.accounts.utils import get_account_currency
+from erpnext.hr.utils import set_employee_name, share_doc_with_approver, validate_active_employee
+
 
 class InvalidExpenseApproverError(frappe.ValidationError): pass
 class ExpenseApproverIdentityError(frappe.ValidationError): pass
diff --git a/erpnext/hr/doctype/expense_claim/expense_claim_dashboard.py b/erpnext/hr/doctype/expense_claim/expense_claim_dashboard.py
index fe97350..a5682dc 100644
--- a/erpnext/hr/doctype/expense_claim/expense_claim_dashboard.py
+++ b/erpnext/hr/doctype/expense_claim/expense_claim_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
         'fieldname': 'reference_name',
diff --git a/erpnext/hr/doctype/expense_claim/test_expense_claim.py b/erpnext/hr/doctype/expense_claim/test_expense_claim.py
index d61c590..9cb65f7 100644
--- a/erpnext/hr/doctype/expense_claim/test_expense_claim.py
+++ b/erpnext/hr/doctype/expense_claim/test_expense_claim.py
@@ -2,12 +2,14 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import random_string, nowdate, flt
-from erpnext.hr.doctype.expense_claim.expense_claim import make_bank_entry
+
+import frappe
+from frappe.utils import flt, nowdate, random_string
+
 from erpnext.accounts.doctype.account.test_account import create_account
 from erpnext.hr.doctype.employee.test_employee import make_employee
+from erpnext.hr.doctype.expense_claim.expense_claim import make_bank_entry
 
 test_records = frappe.get_test_records('Expense Claim')
 test_dependencies = ['Employee']
diff --git a/erpnext/hr/doctype/expense_claim_account/expense_claim_account.py b/erpnext/hr/doctype/expense_claim_account/expense_claim_account.py
index f34633c..a982002 100644
--- a/erpnext/hr/doctype/expense_claim_account/expense_claim_account.py
+++ b/erpnext/hr/doctype/expense_claim_account/expense_claim_account.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ExpenseClaimAccount(Document):
 	pass
diff --git a/erpnext/hr/doctype/expense_claim_advance/expense_claim_advance.py b/erpnext/hr/doctype/expense_claim_advance/expense_claim_advance.py
index c4e7b02..5607f41 100644
--- a/erpnext/hr/doctype/expense_claim_advance/expense_claim_advance.py
+++ b/erpnext/hr/doctype/expense_claim_advance/expense_claim_advance.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ExpenseClaimAdvance(Document):
 	pass
diff --git a/erpnext/hr/doctype/expense_claim_detail/expense_claim_detail.py b/erpnext/hr/doctype/expense_claim_detail/expense_claim_detail.py
index 5d48990..019e9f4 100644
--- a/erpnext/hr/doctype/expense_claim_detail/expense_claim_detail.py
+++ b/erpnext/hr/doctype/expense_claim_detail/expense_claim_detail.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class ExpenseClaimDetail(Document):
 	pass
diff --git a/erpnext/hr/doctype/expense_claim_type/expense_claim_type.py b/erpnext/hr/doctype/expense_claim_type/expense_claim_type.py
index a637a54..101461c 100644
--- a/erpnext/hr/doctype/expense_claim_type/expense_claim_type.py
+++ b/erpnext/hr/doctype/expense_claim_type/expense_claim_type.py
@@ -2,10 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
 
+
 class ExpenseClaimType(Document):
 	def validate(self):
 		self.validate_accounts()
diff --git a/erpnext/hr/doctype/expense_claim_type/test_expense_claim_type.py b/erpnext/hr/doctype/expense_claim_type/test_expense_claim_type.py
index 1d89430..f0c900e 100644
--- a/erpnext/hr/doctype/expense_claim_type/test_expense_claim_type.py
+++ b/erpnext/hr/doctype/expense_claim_type/test_expense_claim_type.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Expense Claim Type')
diff --git a/erpnext/hr/doctype/expense_taxes_and_charges/expense_taxes_and_charges.py b/erpnext/hr/doctype/expense_taxes_and_charges/expense_taxes_and_charges.py
index 4103bef..596e8c7 100644
--- a/erpnext/hr/doctype/expense_taxes_and_charges/expense_taxes_and_charges.py
+++ b/erpnext/hr/doctype/expense_taxes_and_charges/expense_taxes_and_charges.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class ExpenseTaxesandCharges(Document):
 	pass
diff --git a/erpnext/hr/doctype/full_and_final_asset/full_and_final_asset.py b/erpnext/hr/doctype/full_and_final_asset/full_and_final_asset.py
index 2337224..661af7d 100644
--- a/erpnext/hr/doctype/full_and_final_asset/full_and_final_asset.py
+++ b/erpnext/hr/doctype/full_and_final_asset/full_and_final_asset.py
@@ -4,5 +4,6 @@
 # import frappe
 from frappe.model.document import Document
 
+
 class FullandFinalAsset(Document):
 	pass
diff --git a/erpnext/hr/doctype/full_and_final_asset/test_full_and_final_asset.py b/erpnext/hr/doctype/full_and_final_asset/test_full_and_final_asset.py
index 6d59c99..9afe0f2 100644
--- a/erpnext/hr/doctype/full_and_final_asset/test_full_and_final_asset.py
+++ b/erpnext/hr/doctype/full_and_final_asset/test_full_and_final_asset.py
@@ -4,5 +4,6 @@
 # import frappe
 import unittest
 
+
 class TestFullandFinalAsset(unittest.TestCase):
 	pass
diff --git a/erpnext/hr/doctype/full_and_final_outstanding_statement/full_and_final_outstanding_statement.py b/erpnext/hr/doctype/full_and_final_outstanding_statement/full_and_final_outstanding_statement.py
index d53cd91..4b239ab 100644
--- a/erpnext/hr/doctype/full_and_final_outstanding_statement/full_and_final_outstanding_statement.py
+++ b/erpnext/hr/doctype/full_and_final_outstanding_statement/full_and_final_outstanding_statement.py
@@ -4,5 +4,6 @@
 # import frappe
 from frappe.model.document import Document
 
+
 class FullandFinalOutstandingStatement(Document):
 	pass
diff --git a/erpnext/hr/doctype/full_and_final_statement/full_and_final_statement.py b/erpnext/hr/doctype/full_and_final_statement/full_and_final_statement.py
index 4c98cf1..f539537 100644
--- a/erpnext/hr/doctype/full_and_final_statement/full_and_final_statement.py
+++ b/erpnext/hr/doctype/full_and_final_statement/full_and_final_statement.py
@@ -3,8 +3,9 @@
 
 import frappe
 from frappe import _
-from frappe.utils import get_link_to_form, today, flt
 from frappe.model.document import Document
+from frappe.utils import flt, get_link_to_form, today
+
 
 class FullandFinalStatement(Document):
 	def validate(self):
diff --git a/erpnext/hr/doctype/full_and_final_statement/test_full_and_final_statement.py b/erpnext/hr/doctype/full_and_final_statement/test_full_and_final_statement.py
index 8ecc129..f6c1d15 100644
--- a/erpnext/hr/doctype/full_and_final_statement/test_full_and_final_statement.py
+++ b/erpnext/hr/doctype/full_and_final_statement/test_full_and_final_statement.py
@@ -1,13 +1,16 @@
 # Copyright (c) 2021, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 
-import frappe
-from erpnext.hr.doctype.employee.test_employee import make_employee
-from erpnext.assets.doctype.asset.test_asset import create_asset_data
-from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import make_purchase_receipt
-from frappe.utils import today, add_days
 import unittest
 
+import frappe
+from frappe.utils import add_days, today
+
+from erpnext.assets.doctype.asset.test_asset import create_asset_data
+from erpnext.hr.doctype.employee.test_employee import make_employee
+from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import make_purchase_receipt
+
+
 class TestFullandFinalStatement(unittest.TestCase):
 
 	def setUp(self):
diff --git a/erpnext/hr/doctype/grievance_type/grievance_type.py b/erpnext/hr/doctype/grievance_type/grievance_type.py
index 618cf0a..5d8d41c 100644
--- a/erpnext/hr/doctype/grievance_type/grievance_type.py
+++ b/erpnext/hr/doctype/grievance_type/grievance_type.py
@@ -4,5 +4,6 @@
 # import frappe
 from frappe.model.document import Document
 
+
 class GrievanceType(Document):
 	pass
diff --git a/erpnext/hr/doctype/grievance_type/test_grievance_type.py b/erpnext/hr/doctype/grievance_type/test_grievance_type.py
index a02a34d..481f4e5 100644
--- a/erpnext/hr/doctype/grievance_type/test_grievance_type.py
+++ b/erpnext/hr/doctype/grievance_type/test_grievance_type.py
@@ -4,5 +4,6 @@
 # import frappe
 import unittest
 
+
 class TestGrievanceType(unittest.TestCase):
 	pass
diff --git a/erpnext/hr/doctype/holiday/holiday.py b/erpnext/hr/doctype/holiday/holiday.py
index 78a95b9..fbfe756 100644
--- a/erpnext/hr/doctype/holiday/holiday.py
+++ b/erpnext/hr/doctype/holiday/holiday.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class Holiday(Document):
 	pass
diff --git a/erpnext/hr/doctype/holiday_list/holiday_list.py b/erpnext/hr/doctype/holiday_list/holiday_list.py
index f65e6e1..f46f14d 100644
--- a/erpnext/hr/doctype/holiday_list/holiday_list.py
+++ b/erpnext/hr/doctype/holiday_list/holiday_list.py
@@ -3,11 +3,14 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import json
-from frappe.utils import cint, getdate, formatdate, today
-from frappe import throw, _
+
+import frappe
+from frappe import _, throw
 from frappe.model.document import Document
+from frappe.utils import cint, formatdate, getdate, today
+
 
 class OverlapError(frappe.ValidationError): pass
 
@@ -44,9 +47,10 @@
 	def get_weekly_off_date_list(self, start_date, end_date):
 		start_date, end_date = getdate(start_date), getdate(end_date)
 
-		from dateutil import relativedelta
-		from datetime import timedelta
 		import calendar
+		from datetime import timedelta
+
+		from dateutil import relativedelta
 
 		date_list = []
 		existing_date_list = []
diff --git a/erpnext/hr/doctype/holiday_list/holiday_list_dashboard.py b/erpnext/hr/doctype/holiday_list/holiday_list_dashboard.py
index 05641c7..bbba36a 100644
--- a/erpnext/hr/doctype/holiday_list/holiday_list_dashboard.py
+++ b/erpnext/hr/doctype/holiday_list/holiday_list_dashboard.py
@@ -1,5 +1,6 @@
 from __future__ import unicode_literals
 
+
 def get_data():
 	return {
 		'fieldname': 'holiday_list',
diff --git a/erpnext/hr/doctype/holiday_list/test_holiday_list.py b/erpnext/hr/doctype/holiday_list/test_holiday_list.py
index 64bed66..2713193 100644
--- a/erpnext/hr/doctype/holiday_list/test_holiday_list.py
+++ b/erpnext/hr/doctype/holiday_list/test_holiday_list.py
@@ -2,11 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import getdate
 from datetime import timedelta
 
+import frappe
+from frappe.utils import getdate
+
 
 class TestHolidayList(unittest.TestCase):
 	def test_holiday_list(self):
diff --git a/erpnext/hr/doctype/hr_settings/hr_settings.py b/erpnext/hr/doctype/hr_settings/hr_settings.py
index a474093..c295bcb 100644
--- a/erpnext/hr/doctype/hr_settings/hr_settings.py
+++ b/erpnext/hr/doctype/hr_settings/hr_settings.py
@@ -4,7 +4,6 @@
 # For license information, please see license.txt
 
 import frappe
-
 from frappe.model.document import Document
 from frappe.utils import format_date
 
diff --git a/erpnext/hr/doctype/hr_settings/test_hr_settings.py b/erpnext/hr/doctype/hr_settings/test_hr_settings.py
index b0b07b0..69a060a 100644
--- a/erpnext/hr/doctype/hr_settings/test_hr_settings.py
+++ b/erpnext/hr/doctype/hr_settings/test_hr_settings.py
@@ -3,11 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from erpnext.hr.doctype.employee.test_employee import make_employee
-from frappe.utils import now_datetime
-from datetime import timedelta
+
 
 class TestHRSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/hr/doctype/identification_document_type/identification_document_type.py b/erpnext/hr/doctype/identification_document_type/identification_document_type.py
index d9d81d2..862cd37 100644
--- a/erpnext/hr/doctype/identification_document_type/identification_document_type.py
+++ b/erpnext/hr/doctype/identification_document_type/identification_document_type.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class IdentificationDocumentType(Document):
 	pass
diff --git a/erpnext/hr/doctype/identification_document_type/test_identification_document_type.py b/erpnext/hr/doctype/identification_document_type/test_identification_document_type.py
index 1265afa..87f3024 100644
--- a/erpnext/hr/doctype/identification_document_type/test_identification_document_type.py
+++ b/erpnext/hr/doctype/identification_document_type/test_identification_document_type.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestIdentificationDocumentType(unittest.TestCase):
 	pass
diff --git a/erpnext/hr/doctype/interest/interest.py b/erpnext/hr/doctype/interest/interest.py
index 2a9c19c..1b8f49f 100644
--- a/erpnext/hr/doctype/interest/interest.py
+++ b/erpnext/hr/doctype/interest/interest.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class Interest(Document):
 	pass
diff --git a/erpnext/hr/doctype/interest/test_interest.py b/erpnext/hr/doctype/interest/test_interest.py
index a7fe83b..f3727be 100644
--- a/erpnext/hr/doctype/interest/test_interest.py
+++ b/erpnext/hr/doctype/interest/test_interest.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Interest')
diff --git a/erpnext/hr/doctype/job_applicant/job_applicant.py b/erpnext/hr/doctype/job_applicant/job_applicant.py
index 14aeb03..6971e5b 100644
--- a/erpnext/hr/doctype/job_applicant/job_applicant.py
+++ b/erpnext/hr/doctype/job_applicant/job_applicant.py
@@ -4,11 +4,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-from frappe.model.document import Document
+
 import frappe
 from frappe import _
+from frappe.model.document import Document
 from frappe.utils import comma_and, validate_email_address
 
+
 class DuplicationError(frappe.ValidationError): pass
 
 class JobApplicant(Document):
diff --git a/erpnext/hr/doctype/job_applicant/job_applicant_dashboard.py b/erpnext/hr/doctype/job_applicant/job_applicant_dashboard.py
index ed97978..c005943 100644
--- a/erpnext/hr/doctype/job_applicant/job_applicant_dashboard.py
+++ b/erpnext/hr/doctype/job_applicant/job_applicant_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
      return {
diff --git a/erpnext/hr/doctype/job_applicant/test_job_applicant.py b/erpnext/hr/doctype/job_applicant/test_job_applicant.py
index 8728342..e583e25 100644
--- a/erpnext/hr/doctype/job_applicant/test_job_applicant.py
+++ b/erpnext/hr/doctype/job_applicant/test_job_applicant.py
@@ -3,9 +3,10 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
 # test_records = frappe.get_test_records('Job Applicant')
 
 class TestJobApplicant(unittest.TestCase):
diff --git a/erpnext/hr/doctype/job_applicant_source/job_applicant_source.py b/erpnext/hr/doctype/job_applicant_source/job_applicant_source.py
index 5f543d2..9139584 100644
--- a/erpnext/hr/doctype/job_applicant_source/job_applicant_source.py
+++ b/erpnext/hr/doctype/job_applicant_source/job_applicant_source.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class JobApplicantSource(Document):
 	pass
diff --git a/erpnext/hr/doctype/job_applicant_source/test_job_applicant_source.py b/erpnext/hr/doctype/job_applicant_source/test_job_applicant_source.py
index f318df2..0c29124 100644
--- a/erpnext/hr/doctype/job_applicant_source/test_job_applicant_source.py
+++ b/erpnext/hr/doctype/job_applicant_source/test_job_applicant_source.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestJobApplicantSource(unittest.TestCase):
 	pass
diff --git a/erpnext/hr/doctype/job_offer/job_offer.py b/erpnext/hr/doctype/job_offer/job_offer.py
index 7e650f7..07a7809 100644
--- a/erpnext/hr/doctype/job_offer/job_offer.py
+++ b/erpnext/hr/doctype/job_offer/job_offer.py
@@ -2,13 +2,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import cint
+from frappe import _
 from frappe.model.document import Document
 from frappe.model.mapper import get_mapped_doc
-from frappe import _
+from frappe.utils import cint
 from frappe.utils.data import get_link_to_form
 
+
 class JobOffer(Document):
 	def onload(self):
 		employee = frappe.db.get_value("Employee", {"job_applicant": self.job_applicant}, "name") or ""
diff --git a/erpnext/hr/doctype/job_offer/test_job_offer.py b/erpnext/hr/doctype/job_offer/test_job_offer.py
index edb2132..3f3eca1 100644
--- a/erpnext/hr/doctype/job_offer/test_job_offer.py
+++ b/erpnext/hr/doctype/job_offer/test_job_offer.py
@@ -2,11 +2,13 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import nowdate, add_days
-from erpnext.hr.doctype.job_applicant.test_job_applicant import create_job_applicant
+
+import frappe
+from frappe.utils import add_days, nowdate
+
 from erpnext.hr.doctype.designation.test_designation import create_designation
+from erpnext.hr.doctype.job_applicant.test_job_applicant import create_job_applicant
 from erpnext.hr.doctype.staffing_plan.test_staffing_plan import make_company
 
 # test_records = frappe.get_test_records('Job Offer')
diff --git a/erpnext/hr/doctype/job_offer_term/job_offer_term.py b/erpnext/hr/doctype/job_offer_term/job_offer_term.py
index 6dbe675..573cc6a 100644
--- a/erpnext/hr/doctype/job_offer_term/job_offer_term.py
+++ b/erpnext/hr/doctype/job_offer_term/job_offer_term.py
@@ -2,8 +2,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class JobOfferTerm(Document):
 	pass
diff --git a/erpnext/hr/doctype/job_opening/job_opening.py b/erpnext/hr/doctype/job_opening/job_opening.py
index 1e89767..38d9a71 100644
--- a/erpnext/hr/doctype/job_opening/job_opening.py
+++ b/erpnext/hr/doctype/job_opening/job_opening.py
@@ -4,11 +4,16 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
 
-from frappe.website.website_generator import WebsiteGenerator
+import frappe
 from frappe import _
-from erpnext.hr.doctype.staffing_plan.staffing_plan import get_designation_counts, get_active_staffing_plan_details
+from frappe.website.website_generator import WebsiteGenerator
+
+from erpnext.hr.doctype.staffing_plan.staffing_plan import (
+	get_active_staffing_plan_details,
+	get_designation_counts,
+)
+
 
 class JobOpening(WebsiteGenerator):
 	website = frappe._dict(
diff --git a/erpnext/hr/doctype/job_opening/job_opening_dashboard.py b/erpnext/hr/doctype/job_opening/job_opening_dashboard.py
index 31ef33e..a13e2a7 100644
--- a/erpnext/hr/doctype/job_opening/job_opening_dashboard.py
+++ b/erpnext/hr/doctype/job_opening/job_opening_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
      return {
diff --git a/erpnext/hr/doctype/job_opening/test_job_opening.py b/erpnext/hr/doctype/job_opening/test_job_opening.py
index 815ce5b..a66975c 100644
--- a/erpnext/hr/doctype/job_opening/test_job_opening.py
+++ b/erpnext/hr/doctype/job_opening/test_job_opening.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Job Opening')
diff --git a/erpnext/hr/doctype/leave_allocation/leave_allocation.py b/erpnext/hr/doctype/leave_allocation/leave_allocation.py
index 4757cd3..e4886d7 100755
--- a/erpnext/hr/doctype/leave_allocation/leave_allocation.py
+++ b/erpnext/hr/doctype/leave_allocation/leave_allocation.py
@@ -2,13 +2,19 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import flt, date_diff, formatdate, add_days, today, getdate
 from frappe import _
 from frappe.model.document import Document
-from erpnext.hr.utils import set_employee_name, get_leave_period
-from erpnext.hr.doctype.leave_ledger_entry.leave_ledger_entry import expire_allocation, create_leave_ledger_entry
+from frappe.utils import add_days, date_diff, flt, formatdate, getdate
+
 from erpnext.hr.doctype.leave_application.leave_application import get_approved_leaves_for_period
+from erpnext.hr.doctype.leave_ledger_entry.leave_ledger_entry import (
+	create_leave_ledger_entry,
+	expire_allocation,
+)
+from erpnext.hr.utils import get_leave_period, set_employee_name
+
 
 class OverlapError(frappe.ValidationError): pass
 class BackDatedAllocationError(frappe.ValidationError): pass
diff --git a/erpnext/hr/doctype/leave_allocation/leave_allocation_dashboard.py b/erpnext/hr/doctype/leave_allocation/leave_allocation_dashboard.py
index 7a063d9..84423bd 100644
--- a/erpnext/hr/doctype/leave_allocation/leave_allocation_dashboard.py
+++ b/erpnext/hr/doctype/leave_allocation/leave_allocation_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
      return {
diff --git a/erpnext/hr/doctype/leave_allocation/test_leave_allocation.py b/erpnext/hr/doctype/leave_allocation/test_leave_allocation.py
index fdcd533..b185056 100644
--- a/erpnext/hr/doctype/leave_allocation/test_leave_allocation.py
+++ b/erpnext/hr/doctype/leave_allocation/test_leave_allocation.py
@@ -1,10 +1,15 @@
 from __future__ import unicode_literals
-import frappe
-import erpnext
+
 import unittest
-from frappe.utils import nowdate, add_months, getdate, add_days
+
+import frappe
+from frappe.utils import add_days, add_months, getdate, nowdate
+
+import erpnext
+from erpnext.hr.doctype.leave_ledger_entry.leave_ledger_entry import process_expired_allocation
 from erpnext.hr.doctype.leave_type.test_leave_type import create_leave_type
-from erpnext.hr.doctype.leave_ledger_entry.leave_ledger_entry import process_expired_allocation, expire_allocation
+
+
 class TestLeaveAllocation(unittest.TestCase):
 	@classmethod
 	def setUpClass(cls):
diff --git a/erpnext/hr/doctype/leave_application/leave_application.py b/erpnext/hr/doctype/leave_application/leave_application.py
index 2e37c13..9e6fc6d 100755
--- a/erpnext/hr/doctype/leave_application/leave_application.py
+++ b/erpnext/hr/doctype/leave_application/leave_application.py
@@ -2,14 +2,33 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import cint, cstr, date_diff, flt, formatdate, getdate, get_link_to_form, get_fullname, add_days, nowdate
-from erpnext.hr.utils import set_employee_name, get_leave_period, share_doc_with_approver, validate_active_employee
-from erpnext.hr.doctype.leave_block_list.leave_block_list import get_applicable_block_dates
-from erpnext.hr.doctype.employee.employee import get_holiday_list_for_employee
+from frappe.utils import (
+	add_days,
+	cint,
+	cstr,
+	date_diff,
+	flt,
+	formatdate,
+	get_fullname,
+	get_link_to_form,
+	getdate,
+	nowdate,
+)
+
 from erpnext.buying.doctype.supplier_scorecard.supplier_scorecard import daterange
+from erpnext.hr.doctype.employee.employee import get_holiday_list_for_employee
+from erpnext.hr.doctype.leave_block_list.leave_block_list import get_applicable_block_dates
 from erpnext.hr.doctype.leave_ledger_entry.leave_ledger_entry import create_leave_ledger_entry
+from erpnext.hr.utils import (
+	get_leave_period,
+	set_employee_name,
+	share_doc_with_approver,
+	validate_active_employee,
+)
+
 
 class LeaveDayBlockedError(frappe.ValidationError): pass
 class OverlapError(frappe.ValidationError): pass
@@ -17,6 +36,8 @@
 class NotAnOptionalHoliday(frappe.ValidationError): pass
 
 from frappe.model.document import Document
+
+
 class LeaveApplication(Document):
 	def get_feed(self):
 		return _("{0}: From {0} of type {1}").format(self.employee_name, self.leave_type)
diff --git a/erpnext/hr/doctype/leave_application/test_leave_application.py b/erpnext/hr/doctype/leave_application/test_leave_application.py
index 2832e2f..b9c785a 100644
--- a/erpnext/hr/doctype/leave_application/test_leave_application.py
+++ b/erpnext/hr/doctype/leave_application/test_leave_application.py
@@ -2,16 +2,24 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
-from erpnext.hr.doctype.leave_application.leave_application import LeaveDayBlockedError, OverlapError, NotAnOptionalHoliday, get_leave_balance_on
+import frappe
 from frappe.permissions import clear_user_permissions_for_doctype
-from frappe.utils import add_days, nowdate, now_datetime, getdate, add_months
-from erpnext.hr.doctype.leave_type.test_leave_type import create_leave_type
-from erpnext.hr.doctype.leave_allocation.test_leave_allocation import create_leave_allocation
-from erpnext.hr.doctype.leave_policy_assignment.leave_policy_assignment import create_assignment_for_multiple_employees
+from frappe.utils import add_days, add_months, getdate, nowdate
+
 from erpnext.hr.doctype.employee.test_employee import make_employee
+from erpnext.hr.doctype.leave_allocation.test_leave_allocation import create_leave_allocation
+from erpnext.hr.doctype.leave_application.leave_application import (
+	LeaveDayBlockedError,
+	NotAnOptionalHoliday,
+	OverlapError,
+	get_leave_balance_on,
+)
+from erpnext.hr.doctype.leave_policy_assignment.leave_policy_assignment import (
+	create_assignment_for_multiple_employees,
+)
+from erpnext.hr.doctype.leave_type.test_leave_type import create_leave_type
 
 test_dependencies = ["Leave Allocation", "Leave Block List", "Employee"]
 
diff --git a/erpnext/hr/doctype/leave_block_list/leave_block_list.py b/erpnext/hr/doctype/leave_block_list/leave_block_list.py
index 9cb9fc0..9ba079c 100644
--- a/erpnext/hr/doctype/leave_block_list/leave_block_list.py
+++ b/erpnext/hr/doctype/leave_block_list/leave_block_list.py
@@ -4,10 +4,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
 
+
 class LeaveBlockList(Document):
 
 	def validate(self):
diff --git a/erpnext/hr/doctype/leave_block_list/leave_block_list_dashboard.py b/erpnext/hr/doctype/leave_block_list/leave_block_list_dashboard.py
index 45aa491..30e7572 100644
--- a/erpnext/hr/doctype/leave_block_list/leave_block_list_dashboard.py
+++ b/erpnext/hr/doctype/leave_block_list/leave_block_list_dashboard.py
@@ -1,5 +1,6 @@
 from __future__ import unicode_literals
 
+
 def get_data():
 	return {
 		'fieldname':  'leave_block_list',
diff --git a/erpnext/hr/doctype/leave_block_list/test_leave_block_list.py b/erpnext/hr/doctype/leave_block_list/test_leave_block_list.py
index 0eb69a5..dd90e4f 100644
--- a/erpnext/hr/doctype/leave_block_list/test_leave_block_list.py
+++ b/erpnext/hr/doctype/leave_block_list/test_leave_block_list.py
@@ -2,12 +2,14 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
 from frappe.utils import getdate
+
 from erpnext.hr.doctype.leave_block_list.leave_block_list import get_applicable_block_dates
 
+
 class TestLeaveBlockList(unittest.TestCase):
 	def tearDown(self):
 		frappe.set_user("Administrator")
diff --git a/erpnext/hr/doctype/leave_block_list_allow/leave_block_list_allow.py b/erpnext/hr/doctype/leave_block_list_allow/leave_block_list_allow.py
index 8e5a09e..2f64847 100644
--- a/erpnext/hr/doctype/leave_block_list_allow/leave_block_list_allow.py
+++ b/erpnext/hr/doctype/leave_block_list_allow/leave_block_list_allow.py
@@ -4,9 +4,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class LeaveBlockListAllow(Document):
 	pass
diff --git a/erpnext/hr/doctype/leave_block_list_date/leave_block_list_date.py b/erpnext/hr/doctype/leave_block_list_date/leave_block_list_date.py
index 54978a1..4a8f45d 100644
--- a/erpnext/hr/doctype/leave_block_list_date/leave_block_list_date.py
+++ b/erpnext/hr/doctype/leave_block_list_date/leave_block_list_date.py
@@ -4,9 +4,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class LeaveBlockListDate(Document):
 	pass
diff --git a/erpnext/hr/doctype/leave_control_panel/leave_control_panel.py b/erpnext/hr/doctype/leave_control_panel/leave_control_panel.py
index 642ab6a..681a5e2 100644
--- a/erpnext/hr/doctype/leave_control_panel/leave_control_panel.py
+++ b/erpnext/hr/doctype/leave_control_panel/leave_control_panel.py
@@ -2,11 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
-from frappe.utils import cint, cstr, flt, nowdate, comma_and, date_diff
-from frappe import msgprint, _
+import frappe
+from frappe import _, msgprint
 from frappe.model.document import Document
+from frappe.utils import cint, comma_and, cstr, flt
+
 
 class LeaveControlPanel(Document):
 	def get_employees(self):
diff --git a/erpnext/hr/doctype/leave_control_panel/test_leave_control_panel.py b/erpnext/hr/doctype/leave_control_panel/test_leave_control_panel.py
index 9a907c8..f64b233 100644
--- a/erpnext/hr/doctype/leave_control_panel/test_leave_control_panel.py
+++ b/erpnext/hr/doctype/leave_control_panel/test_leave_control_panel.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestLeaveControlPanel(unittest.TestCase):
 	pass
diff --git a/erpnext/hr/doctype/leave_encashment/leave_encashment.py b/erpnext/hr/doctype/leave_encashment/leave_encashment.py
index d136210..7656abf 100644
--- a/erpnext/hr/doctype/leave_encashment/leave_encashment.py
+++ b/erpnext/hr/doctype/leave_encashment/leave_encashment.py
@@ -3,14 +3,19 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
-from frappe.utils import getdate, nowdate, flt
-from erpnext.hr.utils import set_employee_name, validate_active_employee
-from erpnext.payroll.doctype.salary_structure_assignment.salary_structure_assignment import get_assigned_salary_structure
-from erpnext.hr.doctype.leave_ledger_entry.leave_ledger_entry import create_leave_ledger_entry
+from frappe.utils import getdate, nowdate
+
 from erpnext.hr.doctype.leave_allocation.leave_allocation import get_unused_leaves
+from erpnext.hr.doctype.leave_ledger_entry.leave_ledger_entry import create_leave_ledger_entry
+from erpnext.hr.utils import set_employee_name, validate_active_employee
+from erpnext.payroll.doctype.salary_structure_assignment.salary_structure_assignment import (
+	get_assigned_salary_structure,
+)
+
 
 class LeaveEncashment(Document):
 	def validate(self):
diff --git a/erpnext/hr/doctype/leave_encashment/test_leave_encashment.py b/erpnext/hr/doctype/leave_encashment/test_leave_encashment.py
index c1da8b4..762745b 100644
--- a/erpnext/hr/doctype/leave_encashment/test_leave_encashment.py
+++ b/erpnext/hr/doctype/leave_encashment/test_leave_encashment.py
@@ -3,14 +3,18 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import today, add_months
+
+import frappe
+from frappe.utils import add_months, today
+
 from erpnext.hr.doctype.employee.test_employee import make_employee
-from erpnext.payroll.doctype.salary_structure.test_salary_structure import make_salary_structure
 from erpnext.hr.doctype.leave_period.test_leave_period import create_leave_period
-from erpnext.hr.doctype.leave_policy_assignment.leave_policy_assignment import create_assignment_for_multiple_employees
-from erpnext.hr.doctype.leave_policy.test_leave_policy import create_leave_policy\
+from erpnext.hr.doctype.leave_policy.test_leave_policy import create_leave_policy
+from erpnext.hr.doctype.leave_policy_assignment.leave_policy_assignment import (
+	create_assignment_for_multiple_employees,
+)
+from erpnext.payroll.doctype.salary_structure.test_salary_structure import make_salary_structure
 
 test_dependencies = ["Leave Type"]
 
diff --git a/erpnext/hr/doctype/leave_ledger_entry/leave_ledger_entry.py b/erpnext/hr/doctype/leave_ledger_entry/leave_ledger_entry.py
index 33a6243..6cf9685 100644
--- a/erpnext/hr/doctype/leave_ledger_entry/leave_ledger_entry.py
+++ b/erpnext/hr/doctype/leave_ledger_entry/leave_ledger_entry.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.document import Document
 from frappe import _
-from frappe.utils import add_days, today, flt, DATE_FORMAT, getdate
+from frappe.model.document import Document
+from frappe.utils import DATE_FORMAT, flt, getdate, today
+
 
 class LeaveLedgerEntry(Document):
 	def validate(self):
diff --git a/erpnext/hr/doctype/leave_ledger_entry/test_leave_ledger_entry.py b/erpnext/hr/doctype/leave_ledger_entry/test_leave_ledger_entry.py
index 6f7725c..5fa419d 100644
--- a/erpnext/hr/doctype/leave_ledger_entry/test_leave_ledger_entry.py
+++ b/erpnext/hr/doctype/leave_ledger_entry/test_leave_ledger_entry.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestLeaveLedgerEntry(unittest.TestCase):
 	pass
diff --git a/erpnext/hr/doctype/leave_period/leave_period.py b/erpnext/hr/doctype/leave_period/leave_period.py
index 86dccfc..143d23a 100644
--- a/erpnext/hr/doctype/leave_period/leave_period.py
+++ b/erpnext/hr/doctype/leave_period/leave_period.py
@@ -3,12 +3,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import getdate, cstr, add_days, date_diff, ceil
 from frappe.model.document import Document
+from frappe.utils import getdate
+
 from erpnext.hr.utils import validate_overlap
-from frappe.utils.background_jobs import enqueue
+
 
 class LeavePeriod(Document):
 
diff --git a/erpnext/hr/doctype/leave_period/leave_period_dashboard.py b/erpnext/hr/doctype/leave_period/leave_period_dashboard.py
index 7c2c963..a64c63a 100644
--- a/erpnext/hr/doctype/leave_period/leave_period_dashboard.py
+++ b/erpnext/hr/doctype/leave_period/leave_period_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'leave_period',
diff --git a/erpnext/hr/doctype/leave_period/test_leave_period.py b/erpnext/hr/doctype/leave_period/test_leave_period.py
index cbb3437..5c5ae13 100644
--- a/erpnext/hr/doctype/leave_period/test_leave_period.py
+++ b/erpnext/hr/doctype/leave_period/test_leave_period.py
@@ -3,9 +3,12 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe, erpnext
 import unittest
 
+import frappe
+
+import erpnext
+
 test_dependencies = ["Employee", "Leave Type", "Leave Policy"]
 
 class TestLeavePeriod(unittest.TestCase):
diff --git a/erpnext/hr/doctype/leave_policy/leave_policy.py b/erpnext/hr/doctype/leave_policy/leave_policy.py
index 964a5de..b11459d 100644
--- a/erpnext/hr/doctype/leave_policy/leave_policy.py
+++ b/erpnext/hr/doctype/leave_policy/leave_policy.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
 
+
 class LeavePolicy(Document):
 	def validate(self):
 		if self.leave_policy_details:
diff --git a/erpnext/hr/doctype/leave_policy/leave_policy_dashboard.py b/erpnext/hr/doctype/leave_policy/leave_policy_dashboard.py
index 474f3a7..76f886c 100644
--- a/erpnext/hr/doctype/leave_policy/leave_policy_dashboard.py
+++ b/erpnext/hr/doctype/leave_policy/leave_policy_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname':  'leave_policy',
diff --git a/erpnext/hr/doctype/leave_policy/test_leave_policy.py b/erpnext/hr/doctype/leave_policy/test_leave_policy.py
index af7567b..b0743f5 100644
--- a/erpnext/hr/doctype/leave_policy/test_leave_policy.py
+++ b/erpnext/hr/doctype/leave_policy/test_leave_policy.py
@@ -3,9 +3,11 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
+
 class TestLeavePolicy(unittest.TestCase):
 	def test_max_leave_allowed(self):
 		random_leave_type = frappe.get_all("Leave Type", fields=["name", "max_leaves_allowed"])
diff --git a/erpnext/hr/doctype/leave_policy_assignment/leave_policy_assignment.py b/erpnext/hr/doctype/leave_policy_assignment/leave_policy_assignment.py
index d7cb1c8..f62b300 100644
--- a/erpnext/hr/doctype/leave_policy_assignment/leave_policy_assignment.py
+++ b/erpnext/hr/doctype/leave_policy_assignment/leave_policy_assignment.py
@@ -3,14 +3,17 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe.model.document import Document
-from frappe import _, bold
-from frappe.utils import getdate, date_diff, comma_and, formatdate, get_datetime, flt
-from math import ceil
+
 import json
+from math import ceil
+
+import frappe
+from frappe import _, bold
+from frappe.model.document import Document
+from frappe.utils import date_diff, flt, formatdate, get_datetime, getdate
 from six import string_types
 
+
 class LeavePolicyAssignment(Document):
 
 	def validate(self):
diff --git a/erpnext/hr/doctype/leave_policy_assignment/leave_policy_assignment_dashboard.py b/erpnext/hr/doctype/leave_policy_assignment/leave_policy_assignment_dashboard.py
index a2f7f58..79142a6 100644
--- a/erpnext/hr/doctype/leave_policy_assignment/leave_policy_assignment_dashboard.py
+++ b/erpnext/hr/doctype/leave_policy_assignment/leave_policy_assignment_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname':  'leave_policy_assignment',
diff --git a/erpnext/hr/doctype/leave_policy_assignment/test_leave_policy_assignment.py b/erpnext/hr/doctype/leave_policy_assignment/test_leave_policy_assignment.py
index 0089804..cbb26a1 100644
--- a/erpnext/hr/doctype/leave_policy_assignment/test_leave_policy_assignment.py
+++ b/erpnext/hr/doctype/leave_policy_assignment/test_leave_policy_assignment.py
@@ -3,11 +3,18 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from erpnext.hr.doctype.leave_application.test_leave_application import get_leave_period, get_employee
-from erpnext.hr.doctype.leave_policy_assignment.leave_policy_assignment import create_assignment_for_multiple_employees
+
+import frappe
+
+from erpnext.hr.doctype.leave_application.test_leave_application import (
+	get_employee,
+	get_leave_period,
+)
 from erpnext.hr.doctype.leave_policy.test_leave_policy import create_leave_policy
+from erpnext.hr.doctype.leave_policy_assignment.leave_policy_assignment import (
+	create_assignment_for_multiple_employees,
+)
 
 test_dependencies = ["Employee"]
 
diff --git a/erpnext/hr/doctype/leave_policy_detail/leave_policy_detail.py b/erpnext/hr/doctype/leave_policy_detail/leave_policy_detail.py
index c103f08..f889424 100644
--- a/erpnext/hr/doctype/leave_policy_detail/leave_policy_detail.py
+++ b/erpnext/hr/doctype/leave_policy_detail/leave_policy_detail.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class LeavePolicyDetail(Document):
 	pass
diff --git a/erpnext/hr/doctype/leave_policy_detail/test_leave_policy_detail.py b/erpnext/hr/doctype/leave_policy_detail/test_leave_policy_detail.py
index 610b1fa..4cf9db2 100644
--- a/erpnext/hr/doctype/leave_policy_detail/test_leave_policy_detail.py
+++ b/erpnext/hr/doctype/leave_policy_detail/test_leave_policy_detail.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestLeavePolicyDetail(unittest.TestCase):
 	pass
diff --git a/erpnext/hr/doctype/leave_type/leave_type.py b/erpnext/hr/doctype/leave_type/leave_type.py
index 21f180b..195c858 100644
--- a/erpnext/hr/doctype/leave_type/leave_type.py
+++ b/erpnext/hr/doctype/leave_type/leave_type.py
@@ -2,13 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import calendar
-import frappe
-from datetime import datetime
-from frappe.utils import today
-from frappe import _
 
+import frappe
+from frappe import _
 from frappe.model.document import Document
+from frappe.utils import today
+
 
 class LeaveType(Document):
 	def validate(self):
diff --git a/erpnext/hr/doctype/leave_type/leave_type_dashboard.py b/erpnext/hr/doctype/leave_type/leave_type_dashboard.py
index c8944fc..773d4e8 100644
--- a/erpnext/hr/doctype/leave_type/leave_type_dashboard.py
+++ b/erpnext/hr/doctype/leave_type/leave_type_dashboard.py
@@ -1,5 +1,6 @@
 from __future__ import unicode_literals
 
+
 def get_data():
 	return {
 		'fieldname': 'leave_type',
diff --git a/erpnext/hr/doctype/leave_type/test_leave_type.py b/erpnext/hr/doctype/leave_type/test_leave_type.py
index 048dddd..ee8db74 100644
--- a/erpnext/hr/doctype/leave_type/test_leave_type.py
+++ b/erpnext/hr/doctype/leave_type/test_leave_type.py
@@ -3,7 +3,6 @@
 from __future__ import unicode_literals
 
 import frappe
-from frappe import _
 
 test_records = frappe.get_test_records('Leave Type')
 
diff --git a/erpnext/hr/doctype/offer_term/offer_term.py b/erpnext/hr/doctype/offer_term/offer_term.py
index 6a63201..5f8f591 100644
--- a/erpnext/hr/doctype/offer_term/offer_term.py
+++ b/erpnext/hr/doctype/offer_term/offer_term.py
@@ -2,8 +2,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class OfferTerm(Document):
 	pass
diff --git a/erpnext/hr/doctype/offer_term/test_offer_term.py b/erpnext/hr/doctype/offer_term/test_offer_term.py
index d0dd14d..ec7edd4 100644
--- a/erpnext/hr/doctype/offer_term/test_offer_term.py
+++ b/erpnext/hr/doctype/offer_term/test_offer_term.py
@@ -2,7 +2,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Offer Term')
diff --git a/erpnext/hr/doctype/purpose_of_travel/purpose_of_travel.py b/erpnext/hr/doctype/purpose_of_travel/purpose_of_travel.py
index 62f62a5..f66fd27 100644
--- a/erpnext/hr/doctype/purpose_of_travel/purpose_of_travel.py
+++ b/erpnext/hr/doctype/purpose_of_travel/purpose_of_travel.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class PurposeofTravel(Document):
 	pass
diff --git a/erpnext/hr/doctype/purpose_of_travel/test_purpose_of_travel.py b/erpnext/hr/doctype/purpose_of_travel/test_purpose_of_travel.py
index ccd950d..b33f389 100644
--- a/erpnext/hr/doctype/purpose_of_travel/test_purpose_of_travel.py
+++ b/erpnext/hr/doctype/purpose_of_travel/test_purpose_of_travel.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestPurposeofTravel(unittest.TestCase):
 	pass
diff --git a/erpnext/hr/doctype/shift_assignment/shift_assignment.py b/erpnext/hr/doctype/shift_assignment/shift_assignment.py
index 89ae4d5..69af5c5 100644
--- a/erpnext/hr/doctype/shift_assignment/shift_assignment.py
+++ b/erpnext/hr/doctype/shift_assignment/shift_assignment.py
@@ -3,14 +3,18 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
+from datetime import datetime, timedelta
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
-from frappe.utils import cint, cstr, date_diff, flt, formatdate, getdate, now_datetime, nowdate
+from frappe.utils import cstr, getdate, now_datetime, nowdate
+
 from erpnext.hr.doctype.employee.employee import get_holiday_list_for_employee
 from erpnext.hr.doctype.holiday_list.holiday_list import is_holiday
 from erpnext.hr.utils import validate_active_employee
-from datetime import timedelta, datetime
+
 
 class ShiftAssignment(Document):
 	def validate(self):
diff --git a/erpnext/hr/doctype/shift_assignment/test_shift_assignment.py b/erpnext/hr/doctype/shift_assignment/test_shift_assignment.py
index 07d92fe..84003e2 100644
--- a/erpnext/hr/doctype/shift_assignment/test_shift_assignment.py
+++ b/erpnext/hr/doctype/shift_assignment/test_shift_assignment.py
@@ -3,9 +3,10 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import nowdate, add_days
+
+import frappe
+from frappe.utils import add_days, nowdate
 
 test_dependencies = ["Shift Type"]
 
diff --git a/erpnext/hr/doctype/shift_request/shift_request.py b/erpnext/hr/doctype/shift_request/shift_request.py
index 2731da1..a6ac7c8 100644
--- a/erpnext/hr/doctype/shift_request/shift_request.py
+++ b/erpnext/hr/doctype/shift_request/shift_request.py
@@ -3,12 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
 from frappe.utils import formatdate, getdate
+
 from erpnext.hr.utils import share_doc_with_approver, validate_active_employee
 
+
 class OverlapError(frappe.ValidationError): pass
 
 class ShiftRequest(Document):
diff --git a/erpnext/hr/doctype/shift_request/shift_request_dashboard.py b/erpnext/hr/doctype/shift_request/shift_request_dashboard.py
index f70b61a..3ceafc0 100644
--- a/erpnext/hr/doctype/shift_request/shift_request_dashboard.py
+++ b/erpnext/hr/doctype/shift_request/shift_request_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
      return {
diff --git a/erpnext/hr/doctype/shift_request/test_shift_request.py b/erpnext/hr/doctype/shift_request/test_shift_request.py
index 60b7676..7b4a3ca 100644
--- a/erpnext/hr/doctype/shift_request/test_shift_request.py
+++ b/erpnext/hr/doctype/shift_request/test_shift_request.py
@@ -3,9 +3,11 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import nowdate, add_days
+
+import frappe
+from frappe.utils import add_days, nowdate
+
 from erpnext.hr.doctype.employee.test_employee import make_employee
 
 test_dependencies = ["Shift Type"]
diff --git a/erpnext/hr/doctype/shift_type/shift_type.py b/erpnext/hr/doctype/shift_type/shift_type.py
index d5fdda8..e53373d 100644
--- a/erpnext/hr/doctype/shift_type/shift_type.py
+++ b/erpnext/hr/doctype/shift_type/shift_type.py
@@ -3,16 +3,25 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import itertools
 from datetime import timedelta
 
 import frappe
 from frappe.model.document import Document
-from frappe.utils import cint, getdate, get_datetime
-from erpnext.hr.doctype.shift_assignment.shift_assignment import get_actual_start_end_datetime_of_shift, get_employee_shift
-from erpnext.hr.doctype.employee_checkin.employee_checkin import mark_attendance_and_link_log, calculate_working_hours
+from frappe.utils import cint, get_datetime, getdate
+
 from erpnext.hr.doctype.attendance.attendance import mark_attendance
 from erpnext.hr.doctype.employee.employee import get_holiday_list_for_employee
+from erpnext.hr.doctype.employee_checkin.employee_checkin import (
+	calculate_working_hours,
+	mark_attendance_and_link_log,
+)
+from erpnext.hr.doctype.shift_assignment.shift_assignment import (
+	get_actual_start_end_datetime_of_shift,
+	get_employee_shift,
+)
+
 
 class ShiftType(Document):
 	@frappe.whitelist()
diff --git a/erpnext/hr/doctype/shift_type/shift_type_dashboard.py b/erpnext/hr/doctype/shift_type/shift_type_dashboard.py
index aedd190..b78c69a 100644
--- a/erpnext/hr/doctype/shift_type/shift_type_dashboard.py
+++ b/erpnext/hr/doctype/shift_type/shift_type_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
 	return {
diff --git a/erpnext/hr/doctype/shift_type/test_shift_type.py b/erpnext/hr/doctype/shift_type/test_shift_type.py
index bc4f0ea..699030f 100644
--- a/erpnext/hr/doctype/shift_type/test_shift_type.py
+++ b/erpnext/hr/doctype/shift_type/test_shift_type.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestShiftType(unittest.TestCase):
 	pass
diff --git a/erpnext/hr/doctype/skill/skill.py b/erpnext/hr/doctype/skill/skill.py
index 8d24212..ebaa410 100644
--- a/erpnext/hr/doctype/skill/skill.py
+++ b/erpnext/hr/doctype/skill/skill.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class Skill(Document):
 	pass
diff --git a/erpnext/hr/doctype/staffing_plan/staffing_plan.py b/erpnext/hr/doctype/staffing_plan/staffing_plan.py
index e6c783a..57a92b0 100644
--- a/erpnext/hr/doctype/staffing_plan/staffing_plan.py
+++ b/erpnext/hr/doctype/staffing_plan/staffing_plan.py
@@ -3,12 +3,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.document import Document
 from frappe import _
-from frappe.utils import getdate, nowdate, cint, flt
+from frappe.model.document import Document
+from frappe.utils import cint, flt, getdate, nowdate
 from frappe.utils.nestedset import get_descendants_of
 
+
 class SubsidiaryCompanyError(frappe.ValidationError): pass
 class ParentCompanyError(frappe.ValidationError): pass
 
diff --git a/erpnext/hr/doctype/staffing_plan/staffing_plan_dashboard.py b/erpnext/hr/doctype/staffing_plan/staffing_plan_dashboard.py
index 8e89d53..24ae122 100644
--- a/erpnext/hr/doctype/staffing_plan/staffing_plan_dashboard.py
+++ b/erpnext/hr/doctype/staffing_plan/staffing_plan_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
      return {
diff --git a/erpnext/hr/doctype/staffing_plan/test_staffing_plan.py b/erpnext/hr/doctype/staffing_plan/test_staffing_plan.py
index 1c6218e..4517cba 100644
--- a/erpnext/hr/doctype/staffing_plan/test_staffing_plan.py
+++ b/erpnext/hr/doctype/staffing_plan/test_staffing_plan.py
@@ -3,11 +3,15 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from erpnext.hr.doctype.staffing_plan.staffing_plan import SubsidiaryCompanyError
-from erpnext.hr.doctype.staffing_plan.staffing_plan import ParentCompanyError
-from frappe.utils import nowdate, add_days
+
+import frappe
+from frappe.utils import add_days, nowdate
+
+from erpnext.hr.doctype.staffing_plan.staffing_plan import (
+	ParentCompanyError,
+	SubsidiaryCompanyError,
+)
 
 test_dependencies = ["Designation"]
 
diff --git a/erpnext/hr/doctype/staffing_plan_detail/staffing_plan_detail.py b/erpnext/hr/doctype/staffing_plan_detail/staffing_plan_detail.py
index 28a651e..ea89df3 100644
--- a/erpnext/hr/doctype/staffing_plan_detail/staffing_plan_detail.py
+++ b/erpnext/hr/doctype/staffing_plan_detail/staffing_plan_detail.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class StaffingPlanDetail(Document):
 	pass
diff --git a/erpnext/hr/doctype/training_event/test_training_event.py b/erpnext/hr/doctype/training_event/test_training_event.py
index 6a275b3..ed44fa6 100644
--- a/erpnext/hr/doctype/training_event/test_training_event.py
+++ b/erpnext/hr/doctype/training_event/test_training_event.py
@@ -3,11 +3,14 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import today, add_days
+
+import frappe
+from frappe.utils import add_days, today
+
 from erpnext.payroll.doctype.salary_structure.test_salary_structure import make_employee
 
+
 class TestTrainingEvent(unittest.TestCase):
 	def setUp(self):
 		create_training_program("Basic Training")
diff --git a/erpnext/hr/doctype/training_event/training_event.py b/erpnext/hr/doctype/training_event/training_event.py
index e2c30cb..9b01d3d 100644
--- a/erpnext/hr/doctype/training_event/training_event.py
+++ b/erpnext/hr/doctype/training_event/training_event.py
@@ -3,12 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.document import Document
 from frappe import _
+from frappe.model.document import Document
 from frappe.utils import time_diff_in_seconds
+
 from erpnext.hr.doctype.employee.employee import get_employee_emails
 
+
 class TrainingEvent(Document):
 	def validate(self):
 		self.set_employee_emails()
diff --git a/erpnext/hr/doctype/training_event/training_event_dashboard.py b/erpnext/hr/doctype/training_event/training_event_dashboard.py
index 19afd8d..a917c87 100644
--- a/erpnext/hr/doctype/training_event/training_event_dashboard.py
+++ b/erpnext/hr/doctype/training_event/training_event_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
      return {
diff --git a/erpnext/hr/doctype/training_event_employee/training_event_employee.py b/erpnext/hr/doctype/training_event_employee/training_event_employee.py
index 234e958..0892355 100644
--- a/erpnext/hr/doctype/training_event_employee/training_event_employee.py
+++ b/erpnext/hr/doctype/training_event_employee/training_event_employee.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class TrainingEventEmployee(Document):
 	pass
diff --git a/erpnext/hr/doctype/training_feedback/test_training_feedback.py b/erpnext/hr/doctype/training_feedback/test_training_feedback.py
index 4c0c180..a9bf6d6 100644
--- a/erpnext/hr/doctype/training_feedback/test_training_feedback.py
+++ b/erpnext/hr/doctype/training_feedback/test_training_feedback.py
@@ -3,10 +3,17 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
+import frappe
+
+from erpnext.hr.doctype.training_event.test_training_event import (
+	create_training_event,
+	create_training_program,
+)
 from erpnext.payroll.doctype.salary_structure.test_salary_structure import make_employee
-from erpnext.hr.doctype.training_event.test_training_event import create_training_program, create_training_event
+
+
 class TestTrainingFeedback(unittest.TestCase):
 	def setUp(self):
 		create_training_program("Basic Training")
diff --git a/erpnext/hr/doctype/training_feedback/training_feedback.py b/erpnext/hr/doctype/training_feedback/training_feedback.py
index 3d4b9b3..6a41a65 100644
--- a/erpnext/hr/doctype/training_feedback/training_feedback.py
+++ b/erpnext/hr/doctype/training_feedback/training_feedback.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.document import Document
 from frappe import _
+from frappe.model.document import Document
+
 
 class TrainingFeedback(Document):
 	def validate(self):
diff --git a/erpnext/hr/doctype/training_program/test_training_program.py b/erpnext/hr/doctype/training_program/test_training_program.py
index 9d5b286..aec319f 100644
--- a/erpnext/hr/doctype/training_program/test_training_program.py
+++ b/erpnext/hr/doctype/training_program/test_training_program.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestTrainingProgram(unittest.TestCase):
 	pass
diff --git a/erpnext/hr/doctype/training_program/training_program.py b/erpnext/hr/doctype/training_program/training_program.py
index 7a3720b..6f3ab5a 100644
--- a/erpnext/hr/doctype/training_program/training_program.py
+++ b/erpnext/hr/doctype/training_program/training_program.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class TrainingProgram(Document):
 	pass
diff --git a/erpnext/hr/doctype/training_program/training_program_dashboard.py b/erpnext/hr/doctype/training_program/training_program_dashboard.py
index 0fc18a8..b2eed68 100644
--- a/erpnext/hr/doctype/training_program/training_program_dashboard.py
+++ b/erpnext/hr/doctype/training_program/training_program_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'training_program',
diff --git a/erpnext/hr/doctype/training_result/test_training_result.py b/erpnext/hr/doctype/training_result/test_training_result.py
index 29ed2a0..17ccc4b 100644
--- a/erpnext/hr/doctype/training_result/test_training_result.py
+++ b/erpnext/hr/doctype/training_result/test_training_result.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Training Result')
diff --git a/erpnext/hr/doctype/training_result/training_result.py b/erpnext/hr/doctype/training_result/training_result.py
index 7cdc51f..9cfc570 100644
--- a/erpnext/hr/doctype/training_result/training_result.py
+++ b/erpnext/hr/doctype/training_result/training_result.py
@@ -3,11 +3,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
+
 from erpnext.hr.doctype.employee.employee import get_employee_emails
 
+
 class TrainingResult(Document):
 	def validate(self):
 		training_event = frappe.get_doc("Training Event", self.training_event)
diff --git a/erpnext/hr/doctype/training_result_employee/training_result_employee.py b/erpnext/hr/doctype/training_result_employee/training_result_employee.py
index 54e2a18..b0d4605 100644
--- a/erpnext/hr/doctype/training_result_employee/training_result_employee.py
+++ b/erpnext/hr/doctype/training_result_employee/training_result_employee.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class TrainingResultEmployee(Document):
 	pass
diff --git a/erpnext/hr/doctype/travel_itinerary/travel_itinerary.py b/erpnext/hr/doctype/travel_itinerary/travel_itinerary.py
index 0b369be..467ef16 100644
--- a/erpnext/hr/doctype/travel_itinerary/travel_itinerary.py
+++ b/erpnext/hr/doctype/travel_itinerary/travel_itinerary.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class TravelItinerary(Document):
 	pass
diff --git a/erpnext/hr/doctype/travel_request/test_travel_request.py b/erpnext/hr/doctype/travel_request/test_travel_request.py
index dac5517..95bf8b9 100644
--- a/erpnext/hr/doctype/travel_request/test_travel_request.py
+++ b/erpnext/hr/doctype/travel_request/test_travel_request.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestTravelRequest(unittest.TestCase):
 	pass
diff --git a/erpnext/hr/doctype/travel_request/travel_request.py b/erpnext/hr/doctype/travel_request/travel_request.py
index 60834d3..b10333f 100644
--- a/erpnext/hr/doctype/travel_request/travel_request.py
+++ b/erpnext/hr/doctype/travel_request/travel_request.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
+
 from erpnext.hr.utils import validate_active_employee
 
+
 class TravelRequest(Document):
 	def validate(self):
 		validate_active_employee(self.employee)
diff --git a/erpnext/hr/doctype/travel_request_costing/travel_request_costing.py b/erpnext/hr/doctype/travel_request_costing/travel_request_costing.py
index 9fa85e8..9b38d88 100644
--- a/erpnext/hr/doctype/travel_request_costing/travel_request_costing.py
+++ b/erpnext/hr/doctype/travel_request_costing/travel_request_costing.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class TravelRequestCosting(Document):
 	pass
diff --git a/erpnext/hr/doctype/upload_attendance/test_upload_attendance.py b/erpnext/hr/doctype/upload_attendance/test_upload_attendance.py
index 03b0cf3..e0a776c 100644
--- a/erpnext/hr/doctype/upload_attendance/test_upload_attendance.py
+++ b/erpnext/hr/doctype/upload_attendance/test_upload_attendance.py
@@ -3,12 +3,14 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-import erpnext
+
+import frappe
 from frappe.utils import getdate
-from erpnext.hr.doctype.upload_attendance.upload_attendance import get_data
+
+import erpnext
 from erpnext.hr.doctype.employee.test_employee import make_employee
+from erpnext.hr.doctype.upload_attendance.upload_attendance import get_data
 
 test_dependencies = ['Holiday List']
 
diff --git a/erpnext/hr/doctype/upload_attendance/upload_attendance.py b/erpnext/hr/doctype/upload_attendance/upload_attendance.py
index 9c765d7..030ecec 100644
--- a/erpnext/hr/doctype/upload_attendance/upload_attendance.py
+++ b/erpnext/hr/doctype/upload_attendance/upload_attendance.py
@@ -4,14 +4,17 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import cstr, add_days, date_diff, getdate
 from frappe import _
-from frappe.utils.csvutils import UnicodeWriter
 from frappe.model.document import Document
+from frappe.utils import add_days, cstr, date_diff, getdate
+from frappe.utils.csvutils import UnicodeWriter
+
 from erpnext.hr.doctype.employee.employee import get_holiday_list_for_employee
 from erpnext.hr.utils import get_holiday_dates_for_employee
 
+
 class UploadAttendance(Document):
 	pass
 
diff --git a/erpnext/hr/doctype/vehicle/test_vehicle.py b/erpnext/hr/doctype/vehicle/test_vehicle.py
index ff3429d..2bc94c6 100644
--- a/erpnext/hr/doctype/vehicle/test_vehicle.py
+++ b/erpnext/hr/doctype/vehicle/test_vehicle.py
@@ -3,9 +3,11 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import nowdate,flt, cstr,random_string
+
+import frappe
+from frappe.utils import random_string
+
 # test_records = frappe.get_test_records('Vehicle')
 
 class TestVehicle(unittest.TestCase):
diff --git a/erpnext/hr/doctype/vehicle/vehicle.py b/erpnext/hr/doctype/vehicle/vehicle.py
index 1df5068..2ff1904 100644
--- a/erpnext/hr/doctype/vehicle/vehicle.py
+++ b/erpnext/hr/doctype/vehicle/vehicle.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import getdate
 from frappe.model.document import Document
+from frappe.utils import getdate
+
 
 class Vehicle(Document):
 	def validate(self):
diff --git a/erpnext/hr/doctype/vehicle/vehicle_dashboard.py b/erpnext/hr/doctype/vehicle/vehicle_dashboard.py
index 628c897..6a01bcf 100644
--- a/erpnext/hr/doctype/vehicle/vehicle_dashboard.py
+++ b/erpnext/hr/doctype/vehicle/vehicle_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'heatmap': True,
diff --git a/erpnext/hr/doctype/vehicle_log/test_vehicle_log.py b/erpnext/hr/doctype/vehicle_log/test_vehicle_log.py
index ed02120..1b0bfcb 100644
--- a/erpnext/hr/doctype/vehicle_log/test_vehicle_log.py
+++ b/erpnext/hr/doctype/vehicle_log/test_vehicle_log.py
@@ -3,12 +3,15 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import nowdate, flt, cstr, random_string
+
+import frappe
+from frappe.utils import cstr, flt, nowdate, random_string
+
 from erpnext.hr.doctype.employee.test_employee import make_employee
 from erpnext.hr.doctype.vehicle_log.vehicle_log import make_expense_claim
 
+
 class TestVehicleLog(unittest.TestCase):
 	def setUp(self):
 		employee_id = frappe.db.sql("""select name from `tabEmployee` where name='testdriver@example.com'""")
diff --git a/erpnext/hr/doctype/vehicle_log/vehicle_log.py b/erpnext/hr/doctype/vehicle_log/vehicle_log.py
index 04c94e3..73c848b 100644
--- a/erpnext/hr/doctype/vehicle_log/vehicle_log.py
+++ b/erpnext/hr/doctype/vehicle_log/vehicle_log.py
@@ -3,11 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import flt, cstr
-from frappe.model.mapper import get_mapped_doc
 from frappe.model.document import Document
+from frappe.utils import flt
+
 
 class VehicleLog(Document):
 	def validate(self):
diff --git a/erpnext/hr/doctype/vehicle_service/vehicle_service.py b/erpnext/hr/doctype/vehicle_service/vehicle_service.py
index 18ed782..bc93a97 100644
--- a/erpnext/hr/doctype/vehicle_service/vehicle_service.py
+++ b/erpnext/hr/doctype/vehicle_service/vehicle_service.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class VehicleService(Document):
 	pass
diff --git a/erpnext/hr/notification/training_feedback/training_feedback.py b/erpnext/hr/notification/training_feedback/training_feedback.py
index 2334f8b..f57de91 100644
--- a/erpnext/hr/notification/training_feedback/training_feedback.py
+++ b/erpnext/hr/notification/training_feedback/training_feedback.py
@@ -1,6 +1,5 @@
 from __future__ import unicode_literals
 
-import frappe
 
 def get_context(context):
 	# do your magic here
diff --git a/erpnext/hr/notification/training_scheduled/training_scheduled.py b/erpnext/hr/notification/training_scheduled/training_scheduled.py
index 2334f8b..f57de91 100644
--- a/erpnext/hr/notification/training_scheduled/training_scheduled.py
+++ b/erpnext/hr/notification/training_scheduled/training_scheduled.py
@@ -1,6 +1,5 @@
 from __future__ import unicode_literals
 
-import frappe
 
 def get_context(context):
 	# do your magic here
diff --git a/erpnext/hr/page/organizational_chart/organizational_chart.py b/erpnext/hr/page/organizational_chart/organizational_chart.py
index 4423d29..1baf805 100644
--- a/erpnext/hr/page/organizational_chart/organizational_chart.py
+++ b/erpnext/hr/page/organizational_chart/organizational_chart.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 @frappe.whitelist()
 def get_children(parent=None, company=None, exclude_node=None):
 	filters = [['status', '!=', 'Left']]
diff --git a/erpnext/hr/page/team_updates/team_updates.py b/erpnext/hr/page/team_updates/team_updates.py
index 58cdc4b..a5e7c44 100644
--- a/erpnext/hr/page/team_updates/team_updates.py
+++ b/erpnext/hr/page/team_updates/team_updates.py
@@ -3,6 +3,7 @@
 import frappe
 from email_reply_parser import EmailReplyParser
 
+
 @frappe.whitelist()
 def get_data(start=0):
 	#frappe.only_for('Employee', 'System Manager')
diff --git a/erpnext/hr/report/daily_work_summary_replies/daily_work_summary_replies.py b/erpnext/hr/report/daily_work_summary_replies/daily_work_summary_replies.py
index d8691b4..62ffb7d 100644
--- a/erpnext/hr/report/daily_work_summary_replies/daily_work_summary_replies.py
+++ b/erpnext/hr/report/daily_work_summary_replies/daily_work_summary_replies.py
@@ -2,10 +2,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-from frappe import _
+
 import frappe
+from frappe import _
+
 from erpnext.hr.doctype.daily_work_summary.daily_work_summary import get_user_emails_from_group
 
+
 def execute(filters=None):
 	if not filters.group: return [], []
 	columns, data = get_columns(), get_data(filters)
diff --git a/erpnext/hr/report/employee_advance_summary/employee_advance_summary.py b/erpnext/hr/report/employee_advance_summary/employee_advance_summary.py
index 363e31d..d0c295d 100644
--- a/erpnext/hr/report/employee_advance_summary/employee_advance_summary.py
+++ b/erpnext/hr/report/employee_advance_summary/employee_advance_summary.py
@@ -2,8 +2,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe import msgprint, _
+from frappe import _, msgprint
+
 
 def execute(filters=None):
 	if not filters: filters = {}
diff --git a/erpnext/hr/report/employee_analytics/employee_analytics.py b/erpnext/hr/report/employee_analytics/employee_analytics.py
index fe77b6a..725c5a1 100644
--- a/erpnext/hr/report/employee_analytics/employee_analytics.py
+++ b/erpnext/hr/report/employee_analytics/employee_analytics.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 def execute(filters=None):
 	if not filters: filters = {}
 
diff --git a/erpnext/hr/report/employee_birthday/employee_birthday.py b/erpnext/hr/report/employee_birthday/employee_birthday.py
index e8d7844..b284e6b 100644
--- a/erpnext/hr/report/employee_birthday/employee_birthday.py
+++ b/erpnext/hr/report/employee_birthday/employee_birthday.py
@@ -2,9 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import flt
+
 
 def execute(filters=None):
 	if not filters: filters = {}
diff --git a/erpnext/hr/report/employee_leave_balance/employee_leave_balance.py b/erpnext/hr/report/employee_leave_balance/employee_leave_balance.py
index b8953b3..6bca136 100644
--- a/erpnext/hr/report/employee_leave_balance/employee_leave_balance.py
+++ b/erpnext/hr/report/employee_leave_balance/employee_leave_balance.py
@@ -2,12 +2,19 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe.utils import flt, add_days
-from frappe import _
-from erpnext.hr.doctype.leave_application.leave_application import get_leaves_for_period, get_leave_balance_on
+
 from itertools import groupby
 
+import frappe
+from frappe import _
+from frappe.utils import add_days
+
+from erpnext.hr.doctype.leave_application.leave_application import (
+	get_leave_balance_on,
+	get_leaves_for_period,
+)
+
+
 def execute(filters=None):
 	if filters.to_date <= filters.from_date:
 		frappe.throw(_('"From Date" can not be greater than or equal to "To Date"'))
diff --git a/erpnext/hr/report/employee_leave_balance_summary/employee_leave_balance_summary.py b/erpnext/hr/report/employee_leave_balance_summary/employee_leave_balance_summary.py
index 0fb3f5e..bcbb066 100644
--- a/erpnext/hr/report/employee_leave_balance_summary/employee_leave_balance_summary.py
+++ b/erpnext/hr/report/employee_leave_balance_summary/employee_leave_balance_summary.py
@@ -2,14 +2,15 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import flt
-from erpnext.hr.doctype.leave_application.leave_application \
-	import get_leave_details
 
-from erpnext.hr.report.employee_leave_balance.employee_leave_balance \
-	import get_department_leave_approver_map
+from erpnext.hr.doctype.leave_application.leave_application import get_leave_details
+from erpnext.hr.report.employee_leave_balance.employee_leave_balance import (
+	get_department_leave_approver_map,
+)
+
 
 def execute(filters=None):
 	leave_types = frappe.db.sql_list("select name from `tabLeave Type` order by name asc")
diff --git a/erpnext/hr/report/employees_working_on_a_holiday/employees_working_on_a_holiday.py b/erpnext/hr/report/employees_working_on_a_holiday/employees_working_on_a_holiday.py
index 59f56d7..3a26882 100644
--- a/erpnext/hr/report/employees_working_on_a_holiday/employees_working_on_a_holiday.py
+++ b/erpnext/hr/report/employees_working_on_a_holiday/employees_working_on_a_holiday.py
@@ -2,6 +2,7 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
diff --git a/erpnext/hr/report/monthly_attendance_sheet/monthly_attendance_sheet.py b/erpnext/hr/report/monthly_attendance_sheet/monthly_attendance_sheet.py
index bcb0ee4..c6e6432 100644
--- a/erpnext/hr/report/monthly_attendance_sheet/monthly_attendance_sheet.py
+++ b/erpnext/hr/report/monthly_attendance_sheet/monthly_attendance_sheet.py
@@ -2,11 +2,13 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe.utils import cstr, cint, getdate
-from frappe import msgprint, _
+
 from calendar import monthrange
 
+import frappe
+from frappe import _, msgprint
+from frappe.utils import cint, cstr, getdate
+
 status_map = {
 	"Absent": "A",
 	"Half Day": "HD",
diff --git a/erpnext/hr/report/recruitment_analytics/recruitment_analytics.py b/erpnext/hr/report/recruitment_analytics/recruitment_analytics.py
index 303c829..c598e9e 100644
--- a/erpnext/hr/report/recruitment_analytics/recruitment_analytics.py
+++ b/erpnext/hr/report/recruitment_analytics/recruitment_analytics.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 def execute(filters=None):
 
 	if not filters: filters = {}
diff --git a/erpnext/hr/report/vehicle_expenses/test_vehicle_expenses.py b/erpnext/hr/report/vehicle_expenses/test_vehicle_expenses.py
index 26e0f26..2ba87ef 100644
--- a/erpnext/hr/report/vehicle_expenses/test_vehicle_expenses.py
+++ b/erpnext/hr/report/vehicle_expenses/test_vehicle_expenses.py
@@ -2,14 +2,18 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import unittest
+
 import frappe
 from frappe.utils import getdate
-from erpnext.hr.doctype.employee.test_employee import make_employee
-from erpnext.hr.doctype.vehicle_log.vehicle_log import make_expense_claim
-from erpnext.hr.doctype.vehicle_log.test_vehicle_log import get_vehicle, make_vehicle_log
-from erpnext.hr.report.vehicle_expenses.vehicle_expenses import execute
+
 from erpnext.accounts.utils import get_fiscal_year
+from erpnext.hr.doctype.employee.test_employee import make_employee
+from erpnext.hr.doctype.vehicle_log.test_vehicle_log import get_vehicle, make_vehicle_log
+from erpnext.hr.doctype.vehicle_log.vehicle_log import make_expense_claim
+from erpnext.hr.report.vehicle_expenses.vehicle_expenses import execute
+
 
 class TestVehicleExpenses(unittest.TestCase):
 	@classmethod
diff --git a/erpnext/hr/report/vehicle_expenses/vehicle_expenses.py b/erpnext/hr/report/vehicle_expenses/vehicle_expenses.py
index c053559..2be3565 100644
--- a/erpnext/hr/report/vehicle_expenses/vehicle_expenses.py
+++ b/erpnext/hr/report/vehicle_expenses/vehicle_expenses.py
@@ -2,12 +2,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-import erpnext
 from frappe import _
 from frappe.utils import flt
+
 from erpnext.accounts.report.financial_statements import get_period_list
 
+
 def execute(filters=None):
 	filters = frappe._dict(filters or {})
 
diff --git a/erpnext/hr/utils.py b/erpnext/hr/utils.py
index eb35e42..deec644 100644
--- a/erpnext/hr/utils.py
+++ b/erpnext/hr/utils.py
@@ -1,14 +1,27 @@
 # Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 
-import erpnext
 import frappe
-from erpnext.hr.doctype.employee.employee import get_holiday_list_for_employee, InactiveEmployeeStatusError
 from frappe import _
-from frappe.desk.form import assign_to
-from frappe.model.document import Document
-from frappe.utils import (add_days, cstr, flt, format_datetime, formatdate,
-	get_datetime, getdate, nowdate, today, unique, get_link_to_form)
+from frappe.utils import (
+	add_days,
+	cstr,
+	flt,
+	format_datetime,
+	formatdate,
+	get_datetime,
+	get_link_to_form,
+	getdate,
+	nowdate,
+	today,
+)
+
+import erpnext
+from erpnext.hr.doctype.employee.employee import (
+	InactiveEmployeeStatusError,
+	get_holiday_list_for_employee,
+)
+
 
 class DuplicateDeclarationError(frappe.ValidationError): pass
 
@@ -272,6 +285,7 @@
 
 def check_effective_date(from_date, to_date, frequency, based_on_date_of_joining_date):
 	import calendar
+
 	from dateutil import relativedelta
 
 	from_date = get_datetime(from_date)
diff --git a/erpnext/hr/web_form/job_application/job_application.py b/erpnext/hr/web_form/job_application/job_application.py
index 2334f8b..f57de91 100644
--- a/erpnext/hr/web_form/job_application/job_application.py
+++ b/erpnext/hr/web_form/job_application/job_application.py
@@ -1,6 +1,5 @@
 from __future__ import unicode_literals
 
-import frappe
 
 def get_context(context):
 	# do your magic here
diff --git a/erpnext/hub_node/__init__.py b/erpnext/hub_node/__init__.py
index 85ffe29..6ac3255 100644
--- a/erpnext/hub_node/__init__.py
+++ b/erpnext/hub_node/__init__.py
@@ -2,8 +2,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 @frappe.whitelist()
 def enable_hub():
 	hub_settings = frappe.get_doc('Marketplace Settings')
diff --git a/erpnext/hub_node/api.py b/erpnext/hub_node/api.py
index 42f9000..5530491 100644
--- a/erpnext/hub_node/api.py
+++ b/erpnext/hub_node/api.py
@@ -1,11 +1,11 @@
 from __future__ import unicode_literals
 
-import frappe
 import json
 
+import frappe
 from frappe import _
-from frappe.frappeclient import FrappeClient
 from frappe.desk.form.load import get_attachments
+from frappe.frappeclient import FrappeClient
 from six import string_types
 
 current_user = frappe.session.user
diff --git a/erpnext/hub_node/doctype/hub_tracked_item/hub_tracked_item.py b/erpnext/hub_node/doctype/hub_tracked_item/hub_tracked_item.py
index be2cd6b..823c79e 100644
--- a/erpnext/hub_node/doctype/hub_tracked_item/hub_tracked_item.py
+++ b/erpnext/hub_node/doctype/hub_tracked_item/hub_tracked_item.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class HubTrackedItem(Document):
 	pass
diff --git a/erpnext/hub_node/doctype/hub_tracked_item/test_hub_tracked_item.py b/erpnext/hub_node/doctype/hub_tracked_item/test_hub_tracked_item.py
index 92b2940..c403f90 100644
--- a/erpnext/hub_node/doctype/hub_tracked_item/test_hub_tracked_item.py
+++ b/erpnext/hub_node/doctype/hub_tracked_item/test_hub_tracked_item.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestHubTrackedItem(unittest.TestCase):
 	pass
diff --git a/erpnext/hub_node/doctype/hub_user/hub_user.py b/erpnext/hub_node/doctype/hub_user/hub_user.py
index de43f4e..1f7c8fc 100644
--- a/erpnext/hub_node/doctype/hub_user/hub_user.py
+++ b/erpnext/hub_node/doctype/hub_user/hub_user.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class HubUser(Document):
 	pass
diff --git a/erpnext/hub_node/doctype/hub_users/hub_users.py b/erpnext/hub_node/doctype/hub_users/hub_users.py
index 440be14..e08ed68 100644
--- a/erpnext/hub_node/doctype/hub_users/hub_users.py
+++ b/erpnext/hub_node/doctype/hub_users/hub_users.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class HubUsers(Document):
 	pass
diff --git a/erpnext/hub_node/doctype/marketplace_settings/marketplace_settings.py b/erpnext/hub_node/doctype/marketplace_settings/marketplace_settings.py
index 91c7bf5..33d23f6 100644
--- a/erpnext/hub_node/doctype/marketplace_settings/marketplace_settings.py
+++ b/erpnext/hub_node/doctype/marketplace_settings/marketplace_settings.py
@@ -2,14 +2,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, requests, json, time
 
-from frappe.model.document import Document
-from frappe.utils import add_years, now, get_datetime, get_datetime_str, cint
-from frappe import _
+import json
+
+import frappe
 from frappe.frappeclient import FrappeClient
-from erpnext.utilities.product import get_price, get_qty_in_stock
-from six import string_types
+from frappe.model.document import Document
+from frappe.utils import cint
+
 
 class MarketplaceSettings(Document):
 
@@ -83,7 +83,6 @@
 
 	def unregister(self):
 		"""Disable the User on hubmarket.org"""
-		pass
 
 @frappe.whitelist()
 def is_marketplace_enabled():
diff --git a/erpnext/hub_node/doctype/marketplace_settings/test_marketplace_settings.py b/erpnext/hub_node/doctype/marketplace_settings/test_marketplace_settings.py
index 549b991..7922f45 100644
--- a/erpnext/hub_node/doctype/marketplace_settings/test_marketplace_settings.py
+++ b/erpnext/hub_node/doctype/marketplace_settings/test_marketplace_settings.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestMarketplaceSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/hub_node/legacy.py b/erpnext/hub_node/legacy.py
index b61b88b..2e4c266 100644
--- a/erpnext/hub_node/legacy.py
+++ b/erpnext/hub_node/legacy.py
@@ -1,9 +1,13 @@
 from __future__ import unicode_literals
-import frappe, json
-from frappe.utils import nowdate
-from frappe.frappeclient import FrappeClient
-from frappe.utils.nestedset import get_root_of
+
+import json
+
+import frappe
 from frappe.contacts.doctype.contact.contact import get_default_contact
+from frappe.frappeclient import FrappeClient
+from frappe.utils import nowdate
+from frappe.utils.nestedset import get_root_of
+
 
 def get_list(doctype, start, limit, fields, filters, order_by):
 	pass
diff --git a/erpnext/loan_management/dashboard_chart_source/top_10_pledged_loan_securities/top_10_pledged_loan_securities.py b/erpnext/loan_management/dashboard_chart_source/top_10_pledged_loan_securities/top_10_pledged_loan_securities.py
index 6ce2a54..0911e8f 100644
--- a/erpnext/loan_management/dashboard_chart_source/top_10_pledged_loan_securities/top_10_pledged_loan_securities.py
+++ b/erpnext/loan_management/dashboard_chart_source/top_10_pledged_loan_securities/top_10_pledged_loan_securities.py
@@ -2,12 +2,16 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.utils.dashboard import cache_source
-from erpnext.loan_management.report.applicant_wise_loan_security_exposure.applicant_wise_loan_security_exposure \
-	 import get_loan_security_details
 from six import iteritems
 
+from erpnext.loan_management.report.applicant_wise_loan_security_exposure.applicant_wise_loan_security_exposure import (
+	get_loan_security_details,
+)
+
+
 @frappe.whitelist()
 @cache_source
 def get_data(chart_name = None, chart = None, no_cache = None, filters = None, from_date = None,
diff --git a/erpnext/loan_management/doctype/loan/loan.py b/erpnext/loan_management/doctype/loan/loan.py
index ff7fbbd..7dbd422 100644
--- a/erpnext/loan_management/doctype/loan/loan.py
+++ b/erpnext/loan_management/doctype/loan/loan.py
@@ -3,14 +3,22 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, math, json
-import erpnext
+
+import json
+import math
+
+import frappe
 from frappe import _
+from frappe.utils import add_months, flt, getdate, now_datetime, nowdate
 from six import string_types
-from frappe.utils import flt, rounded, add_months, nowdate, getdate, now_datetime
-from erpnext.loan_management.doctype.loan_security_unpledge.loan_security_unpledge import get_pledged_security_qty
+
+import erpnext
 from erpnext.controllers.accounts_controller import AccountsController
 from erpnext.loan_management.doctype.loan_repayment.loan_repayment import calculate_amounts
+from erpnext.loan_management.doctype.loan_security_unpledge.loan_security_unpledge import (
+	get_pledged_security_qty,
+)
+
 
 class Loan(AccountsController):
 	def validate(self):
@@ -361,7 +369,9 @@
 	return unpledge_request
 
 def validate_employee_currency_with_company_currency(applicant, company):
-	from erpnext.payroll.doctype.salary_structure_assignment.salary_structure_assignment import get_employee_currency
+	from erpnext.payroll.doctype.salary_structure_assignment.salary_structure_assignment import (
+		get_employee_currency,
+	)
 	if not applicant:
 		frappe.throw(_("Please select Applicant"))
 	if not company:
diff --git a/erpnext/loan_management/doctype/loan/loan_dashboard.py b/erpnext/loan_management/doctype/loan/loan_dashboard.py
index 711a782..28ccc03 100644
--- a/erpnext/loan_management/doctype/loan/loan_dashboard.py
+++ b/erpnext/loan_management/doctype/loan/loan_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
 	return {
diff --git a/erpnext/loan_management/doctype/loan/test_loan.py b/erpnext/loan_management/doctype/loan/test_loan.py
index 122d723..ec0aebb 100644
--- a/erpnext/loan_management/doctype/loan/test_loan.py
+++ b/erpnext/loan_management/doctype/loan/test_loan.py
@@ -3,23 +3,40 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
-import erpnext
 import unittest
-from frappe.utils import (nowdate, add_days, getdate, now_datetime, add_to_date, get_datetime,
-	add_months, get_first_day, get_last_day, flt, date_diff)
-from erpnext.selling.doctype.customer.test_customer import get_customer_dict
-from erpnext.payroll.doctype.salary_structure.test_salary_structure import make_employee
-from erpnext.loan_management.doctype.process_loan_interest_accrual.process_loan_interest_accrual import (process_loan_interest_accrual_for_demand_loans,
-	process_loan_interest_accrual_for_term_loans)
-from erpnext.loan_management.doctype.loan_interest_accrual.loan_interest_accrual import days_in_year
-from erpnext.loan_management.doctype.process_loan_security_shortfall.process_loan_security_shortfall import create_process_loan_security_shortfall
-from erpnext.loan_management.doctype.loan.loan import unpledge_security, request_loan_closure, make_loan_write_off
-from erpnext.loan_management.doctype.loan_security_unpledge.loan_security_unpledge import get_pledged_security_qty
+
+import frappe
+from frappe.utils import add_days, add_months, add_to_date, date_diff, flt, get_datetime, nowdate
+
+from erpnext.loan_management.doctype.loan.loan import (
+	make_loan_write_off,
+	request_loan_closure,
+	unpledge_security,
+)
 from erpnext.loan_management.doctype.loan_application.loan_application import create_pledge
-from erpnext.loan_management.doctype.loan_disbursement.loan_disbursement import get_disbursal_amount
+from erpnext.loan_management.doctype.loan_disbursement.loan_disbursement import (
+	get_disbursal_amount,
+)
+from erpnext.loan_management.doctype.loan_interest_accrual.loan_interest_accrual import (
+	days_in_year,
+)
 from erpnext.loan_management.doctype.loan_repayment.loan_repayment import calculate_amounts
-from erpnext.payroll.doctype.salary_structure.test_salary_structure import make_salary_structure
+from erpnext.loan_management.doctype.loan_security_unpledge.loan_security_unpledge import (
+	get_pledged_security_qty,
+)
+from erpnext.loan_management.doctype.process_loan_interest_accrual.process_loan_interest_accrual import (
+	process_loan_interest_accrual_for_demand_loans,
+	process_loan_interest_accrual_for_term_loans,
+)
+from erpnext.loan_management.doctype.process_loan_security_shortfall.process_loan_security_shortfall import (
+	create_process_loan_security_shortfall,
+)
+from erpnext.payroll.doctype.salary_structure.test_salary_structure import (
+	make_employee,
+	make_salary_structure,
+)
+from erpnext.selling.doctype.customer.test_customer import get_customer_dict
+
 
 class TestLoan(unittest.TestCase):
 	def setUp(self):
diff --git a/erpnext/loan_management/doctype/loan_application/loan_application.py b/erpnext/loan_management/doctype/loan_application/loan_application.py
index d8f3577..e492920 100644
--- a/erpnext/loan_management/doctype/loan_application/loan_application.py
+++ b/erpnext/loan_management/doctype/loan_application/loan_application.py
@@ -3,17 +3,28 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, math
-from frappe import _
-from frappe.utils import flt, rounded, cint
-from frappe.model.mapper import get_mapped_doc
-from frappe.model.document import Document
-from erpnext.loan_management.doctype.loan.loan import (get_monthly_repayment_amount, validate_repayment_method,
-		get_total_loan_amount, get_sanctioned_amount_limit)
-from erpnext.loan_management.doctype.loan_security_price.loan_security_price import get_loan_security_price
+
 import json
+import math
+
+import frappe
+from frappe import _
+from frappe.model.document import Document
+from frappe.model.mapper import get_mapped_doc
+from frappe.utils import cint, flt, rounded
 from six import string_types
 
+from erpnext.loan_management.doctype.loan.loan import (
+	get_monthly_repayment_amount,
+	get_sanctioned_amount_limit,
+	get_total_loan_amount,
+	validate_repayment_method,
+)
+from erpnext.loan_management.doctype.loan_security_price.loan_security_price import (
+	get_loan_security_price,
+)
+
+
 class LoanApplication(Document):
 	def validate(self):
 		self.set_pledge_amount()
diff --git a/erpnext/loan_management/doctype/loan_application/loan_application_dashboard.py b/erpnext/loan_management/doctype/loan_application/loan_application_dashboard.py
index 3975adf..992d669 100644
--- a/erpnext/loan_management/doctype/loan_application/loan_application_dashboard.py
+++ b/erpnext/loan_management/doctype/loan_application/loan_application_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
      return {
diff --git a/erpnext/loan_management/doctype/loan_application/test_loan_application.py b/erpnext/loan_management/doctype/loan_application/test_loan_application.py
index 2a659e9..aefa089 100644
--- a/erpnext/loan_management/doctype/loan_application/test_loan_application.py
+++ b/erpnext/loan_management/doctype/loan_application/test_loan_application.py
@@ -3,10 +3,16 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from erpnext.payroll.doctype.salary_structure.test_salary_structure import make_employee, make_salary_structure
-from erpnext.loan_management.doctype.loan.test_loan import create_loan_type, create_loan_accounts
+
+import frappe
+
+from erpnext.loan_management.doctype.loan.test_loan import create_loan_accounts, create_loan_type
+from erpnext.payroll.doctype.salary_structure.test_salary_structure import (
+	make_employee,
+	make_salary_structure,
+)
+
 
 class TestLoanApplication(unittest.TestCase):
 	def setUp(self):
diff --git a/erpnext/loan_management/doctype/loan_disbursement/loan_disbursement.py b/erpnext/loan_management/doctype/loan_disbursement/loan_disbursement.py
index f113c10..6d9d4f4 100644
--- a/erpnext/loan_management/doctype/loan_disbursement/loan_disbursement.py
+++ b/erpnext/loan_management/doctype/loan_disbursement/loan_disbursement.py
@@ -3,15 +3,21 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
+
+import frappe
 from frappe import _
-from frappe.model.document import Document
-from frappe.utils import nowdate, getdate, add_days, flt
-from erpnext.controllers.accounts_controller import AccountsController
+from frappe.utils import add_days, flt, get_datetime, nowdate
+
+import erpnext
 from erpnext.accounts.general_ledger import make_gl_entries
-from erpnext.loan_management.doctype.process_loan_interest_accrual.process_loan_interest_accrual import process_loan_interest_accrual_for_demand_loans
-from erpnext.loan_management.doctype.loan_security_unpledge.loan_security_unpledge import get_pledged_security_qty
-from frappe.utils import get_datetime
+from erpnext.controllers.accounts_controller import AccountsController
+from erpnext.loan_management.doctype.loan_security_unpledge.loan_security_unpledge import (
+	get_pledged_security_qty,
+)
+from erpnext.loan_management.doctype.process_loan_interest_accrual.process_loan_interest_accrual import (
+	process_loan_interest_accrual_for_demand_loans,
+)
+
 
 class LoanDisbursement(AccountsController):
 
diff --git a/erpnext/loan_management/doctype/loan_disbursement/test_loan_disbursement.py b/erpnext/loan_management/doctype/loan_disbursement/test_loan_disbursement.py
index da56710..b17c9a1 100644
--- a/erpnext/loan_management/doctype/loan_disbursement/test_loan_disbursement.py
+++ b/erpnext/loan_management/doctype/loan_disbursement/test_loan_disbursement.py
@@ -2,16 +2,44 @@
 # Copyright (c) 2019, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
-import frappe
+
 import unittest
-from frappe.utils import (nowdate, add_days, get_datetime, get_first_day, get_last_day, date_diff, flt, add_to_date)
-from erpnext.loan_management.doctype.loan.test_loan import (create_loan_type, create_loan_security_pledge, create_repayment_entry, create_loan_application,
-	make_loan_disbursement_entry, create_loan_accounts, create_loan_security_type, create_loan_security, create_demand_loan, create_loan_security_price)
-from erpnext.loan_management.doctype.process_loan_interest_accrual.process_loan_interest_accrual import process_loan_interest_accrual_for_demand_loans
-from erpnext.loan_management.doctype.loan_interest_accrual.loan_interest_accrual import days_in_year, get_per_day_interest
-from erpnext.selling.doctype.customer.test_customer import get_customer_dict
+
+import frappe
+from frappe.utils import (
+	add_days,
+	add_to_date,
+	date_diff,
+	flt,
+	get_datetime,
+	get_first_day,
+	get_last_day,
+	nowdate,
+)
+
+from erpnext.loan_management.doctype.loan.test_loan import (
+	create_demand_loan,
+	create_loan_accounts,
+	create_loan_application,
+	create_loan_security,
+	create_loan_security_pledge,
+	create_loan_security_price,
+	create_loan_security_type,
+	create_loan_type,
+	create_repayment_entry,
+	make_loan_disbursement_entry,
+)
 from erpnext.loan_management.doctype.loan_application.loan_application import create_pledge
+from erpnext.loan_management.doctype.loan_interest_accrual.loan_interest_accrual import (
+	days_in_year,
+	get_per_day_interest,
+)
 from erpnext.loan_management.doctype.loan_repayment.loan_repayment import calculate_amounts
+from erpnext.loan_management.doctype.process_loan_interest_accrual.process_loan_interest_accrual import (
+	process_loan_interest_accrual_for_demand_loans,
+)
+from erpnext.selling.doctype.customer.test_customer import get_customer_dict
+
 
 class TestLoanDisbursement(unittest.TestCase):
 
diff --git a/erpnext/loan_management/doctype/loan_interest_accrual/loan_interest_accrual.py b/erpnext/loan_management/doctype/loan_interest_accrual/loan_interest_accrual.py
index b5b3048..93513a8 100644
--- a/erpnext/loan_management/doctype/loan_interest_accrual/loan_interest_accrual.py
+++ b/erpnext/loan_management/doctype/loan_interest_accrual/loan_interest_accrual.py
@@ -3,13 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
+
+import frappe
 from frappe import _
-from frappe.model.document import Document
-from frappe.utils import (nowdate, getdate, now_datetime, get_datetime, flt, date_diff, get_last_day, cint,
-	get_first_day, add_days)
-from erpnext.controllers.accounts_controller import AccountsController
+from frappe.utils import add_days, cint, date_diff, flt, get_datetime, getdate, nowdate
+
+import erpnext
 from erpnext.accounts.general_ledger import make_gl_entries
+from erpnext.controllers.accounts_controller import AccountsController
+
 
 class LoanInterestAccrual(AccountsController):
 	def validate(self):
diff --git a/erpnext/loan_management/doctype/loan_interest_accrual/test_loan_interest_accrual.py b/erpnext/loan_management/doctype/loan_interest_accrual/test_loan_interest_accrual.py
index eb626f3..06b801e 100644
--- a/erpnext/loan_management/doctype/loan_interest_accrual/test_loan_interest_accrual.py
+++ b/erpnext/loan_management/doctype/loan_interest_accrual/test_loan_interest_accrual.py
@@ -2,15 +2,31 @@
 # Copyright (c) 2019, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
-import frappe
+
 import unittest
-from frappe.utils import (nowdate, add_days, get_datetime, get_first_day, get_last_day, date_diff, flt, add_to_date)
-from erpnext.loan_management.doctype.loan.test_loan import (create_loan_type, create_loan_security_price,
-	make_loan_disbursement_entry, create_loan_accounts, create_loan_security_type, create_loan_security, create_demand_loan, create_loan_application)
-from erpnext.loan_management.doctype.process_loan_interest_accrual.process_loan_interest_accrual import process_loan_interest_accrual_for_demand_loans
-from erpnext.loan_management.doctype.loan_interest_accrual.loan_interest_accrual import days_in_year
-from erpnext.selling.doctype.customer.test_customer import get_customer_dict
+
+import frappe
+from frappe.utils import add_to_date, date_diff, flt, get_datetime, get_first_day, nowdate
+
+from erpnext.loan_management.doctype.loan.test_loan import (
+	create_demand_loan,
+	create_loan_accounts,
+	create_loan_application,
+	create_loan_security,
+	create_loan_security_price,
+	create_loan_security_type,
+	create_loan_type,
+	make_loan_disbursement_entry,
+)
 from erpnext.loan_management.doctype.loan_application.loan_application import create_pledge
+from erpnext.loan_management.doctype.loan_interest_accrual.loan_interest_accrual import (
+	days_in_year,
+)
+from erpnext.loan_management.doctype.process_loan_interest_accrual.process_loan_interest_accrual import (
+	process_loan_interest_accrual_for_demand_loans,
+)
+from erpnext.selling.doctype.customer.test_customer import get_customer_dict
+
 
 class TestLoanInterestAccrual(unittest.TestCase):
 	def setUp(self):
diff --git a/erpnext/loan_management/doctype/loan_repayment/loan_repayment.py b/erpnext/loan_management/doctype/loan_repayment/loan_repayment.py
index 6c74a9b..13b7357 100644
--- a/erpnext/loan_management/doctype/loan_repayment/loan_repayment.py
+++ b/erpnext/loan_management/doctype/loan_repayment/loan_repayment.py
@@ -3,17 +3,26 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
-import json
+
+import frappe
 from frappe import _
+from frappe.utils import add_days, cint, date_diff, flt, get_datetime, getdate
 from six import iteritems
-from frappe.model.document import Document
-from frappe.utils import flt, cint, date_diff, add_days, getdate, add_months, get_first_day, get_datetime
-from erpnext.controllers.accounts_controller import AccountsController
+
+import erpnext
 from erpnext.accounts.general_ledger import make_gl_entries
-from erpnext.loan_management.doctype.loan_security_shortfall.loan_security_shortfall import update_shortfall_status
-from erpnext.loan_management.doctype.process_loan_interest_accrual.process_loan_interest_accrual import process_loan_interest_accrual_for_demand_loans
-from erpnext.loan_management.doctype.loan_interest_accrual.loan_interest_accrual import get_per_day_interest, get_last_accrual_date
+from erpnext.controllers.accounts_controller import AccountsController
+from erpnext.loan_management.doctype.loan_interest_accrual.loan_interest_accrual import (
+	get_last_accrual_date,
+	get_per_day_interest,
+)
+from erpnext.loan_management.doctype.loan_security_shortfall.loan_security_shortfall import (
+	update_shortfall_status,
+)
+from erpnext.loan_management.doctype.process_loan_interest_accrual.process_loan_interest_accrual import (
+	process_loan_interest_accrual_for_demand_loans,
+)
+
 
 class LoanRepayment(AccountsController):
 
diff --git a/erpnext/loan_management/doctype/loan_repayment/test_loan_repayment.py b/erpnext/loan_management/doctype/loan_repayment/test_loan_repayment.py
index 73585a5..c6ca630 100644
--- a/erpnext/loan_management/doctype/loan_repayment/test_loan_repayment.py
+++ b/erpnext/loan_management/doctype/loan_repayment/test_loan_repayment.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestLoanRepayment(unittest.TestCase):
 	pass
diff --git a/erpnext/loan_management/doctype/loan_repayment_detail/loan_repayment_detail.py b/erpnext/loan_management/doctype/loan_repayment_detail/loan_repayment_detail.py
index a83b9b5..495466c 100644
--- a/erpnext/loan_management/doctype/loan_repayment_detail/loan_repayment_detail.py
+++ b/erpnext/loan_management/doctype/loan_repayment_detail/loan_repayment_detail.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class LoanRepaymentDetail(Document):
 	pass
diff --git a/erpnext/loan_management/doctype/loan_security/loan_security.py b/erpnext/loan_management/doctype/loan_security/loan_security.py
index 8858c81..91cce67 100644
--- a/erpnext/loan_management/doctype/loan_security/loan_security.py
+++ b/erpnext/loan_management/doctype/loan_security/loan_security.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class LoanSecurity(Document):
 	def autoname(self):
 		self.name = self.loan_security_name
diff --git a/erpnext/loan_management/doctype/loan_security/loan_security_dashboard.py b/erpnext/loan_management/doctype/loan_security/loan_security_dashboard.py
index 3eec566..35f3ba6 100644
--- a/erpnext/loan_management/doctype/loan_security/loan_security_dashboard.py
+++ b/erpnext/loan_management/doctype/loan_security/loan_security_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
 	return {
diff --git a/erpnext/loan_management/doctype/loan_security/test_loan_security.py b/erpnext/loan_management/doctype/loan_security/test_loan_security.py
index 24dbc68..910b658 100644
--- a/erpnext/loan_management/doctype/loan_security/test_loan_security.py
+++ b/erpnext/loan_management/doctype/loan_security/test_loan_security.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestLoanSecurity(unittest.TestCase):
 	pass
diff --git a/erpnext/loan_management/doctype/loan_security_pledge/loan_security_pledge.py b/erpnext/loan_management/doctype/loan_security_pledge/loan_security_pledge.py
index c390b6c..eb6c79e 100644
--- a/erpnext/loan_management/doctype/loan_security_pledge/loan_security_pledge.py
+++ b/erpnext/loan_management/doctype/loan_security_pledge/loan_security_pledge.py
@@ -3,12 +3,19 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import now_datetime, cint
 from frappe.model.document import Document
-from erpnext.loan_management.doctype.loan_security_shortfall.loan_security_shortfall import update_shortfall_status
-from erpnext.loan_management.doctype.loan_security_price.loan_security_price import get_loan_security_price
+from frappe.utils import cint, now_datetime
+
+from erpnext.loan_management.doctype.loan_security_price.loan_security_price import (
+	get_loan_security_price,
+)
+from erpnext.loan_management.doctype.loan_security_shortfall.loan_security_shortfall import (
+	update_shortfall_status,
+)
+
 
 class LoanSecurityPledge(Document):
 	def validate(self):
diff --git a/erpnext/loan_management/doctype/loan_security_pledge/test_loan_security_pledge.py b/erpnext/loan_management/doctype/loan_security_pledge/test_loan_security_pledge.py
index d2347c0..41bc78e 100644
--- a/erpnext/loan_management/doctype/loan_security_pledge/test_loan_security_pledge.py
+++ b/erpnext/loan_management/doctype/loan_security_pledge/test_loan_security_pledge.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestLoanSecurityPledge(unittest.TestCase):
 	pass
diff --git a/erpnext/loan_management/doctype/loan_security_price/loan_security_price.py b/erpnext/loan_management/doctype/loan_security_price/loan_security_price.py
index 9fc1fda..6ede6a2 100644
--- a/erpnext/loan_management/doctype/loan_security_price/loan_security_price.py
+++ b/erpnext/loan_management/doctype/loan_security_price/loan_security_price.py
@@ -3,11 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
-from frappe.utils import getdate, now_datetime, add_to_date, get_datetime, get_timestamp, get_datetime_str
-from six import iteritems
+from frappe.utils import get_datetime
+
 
 class LoanSecurityPrice(Document):
 	def validate(self):
diff --git a/erpnext/loan_management/doctype/loan_security_price/test_loan_security_price.py b/erpnext/loan_management/doctype/loan_security_price/test_loan_security_price.py
index 2fe0bd5..ac63086 100644
--- a/erpnext/loan_management/doctype/loan_security_price/test_loan_security_price.py
+++ b/erpnext/loan_management/doctype/loan_security_price/test_loan_security_price.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestLoanSecurityPrice(unittest.TestCase):
 	pass
diff --git a/erpnext/loan_management/doctype/loan_security_shortfall/loan_security_shortfall.py b/erpnext/loan_management/doctype/loan_security_shortfall/loan_security_shortfall.py
index 61f1778..5863c03 100644
--- a/erpnext/loan_management/doctype/loan_security_shortfall/loan_security_shortfall.py
+++ b/erpnext/loan_management/doctype/loan_security_shortfall/loan_security_shortfall.py
@@ -3,11 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import get_datetime, flt
 from frappe.model.document import Document
-from six import iteritems
-from erpnext.loan_management.doctype.loan_security_unpledge.loan_security_unpledge import get_pledged_security_qty
+from frappe.utils import flt, get_datetime
+
+from erpnext.loan_management.doctype.loan_security_unpledge.loan_security_unpledge import (
+	get_pledged_security_qty,
+)
+
 
 class LoanSecurityShortfall(Document):
 	pass
diff --git a/erpnext/loan_management/doctype/loan_security_shortfall/test_loan_security_shortfall.py b/erpnext/loan_management/doctype/loan_security_shortfall/test_loan_security_shortfall.py
index b82f3d2..fefec43 100644
--- a/erpnext/loan_management/doctype/loan_security_shortfall/test_loan_security_shortfall.py
+++ b/erpnext/loan_management/doctype/loan_security_shortfall/test_loan_security_shortfall.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestLoanSecurityShortfall(unittest.TestCase):
 	pass
diff --git a/erpnext/loan_management/doctype/loan_security_type/loan_security_type.py b/erpnext/loan_management/doctype/loan_security_type/loan_security_type.py
index cb8a50a..ca1957f 100644
--- a/erpnext/loan_management/doctype/loan_security_type/loan_security_type.py
+++ b/erpnext/loan_management/doctype/loan_security_type/loan_security_type.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class LoanSecurityType(Document):
 	pass
diff --git a/erpnext/loan_management/doctype/loan_security_type/loan_security_type_dashboard.py b/erpnext/loan_management/doctype/loan_security_type/loan_security_type_dashboard.py
index 17de8c1..7a2732e 100644
--- a/erpnext/loan_management/doctype/loan_security_type/loan_security_type_dashboard.py
+++ b/erpnext/loan_management/doctype/loan_security_type/loan_security_type_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
 	return {
diff --git a/erpnext/loan_management/doctype/loan_security_type/test_loan_security_type.py b/erpnext/loan_management/doctype/loan_security_type/test_loan_security_type.py
index f7d845a..99d7aaf 100644
--- a/erpnext/loan_management/doctype/loan_security_type/test_loan_security_type.py
+++ b/erpnext/loan_management/doctype/loan_security_type/test_loan_security_type.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestLoanSecurityType(unittest.TestCase):
 	pass
diff --git a/erpnext/loan_management/doctype/loan_security_unpledge/loan_security_unpledge.py b/erpnext/loan_management/doctype/loan_security_unpledge/loan_security_unpledge.py
index 4f936dd..0af0de1 100644
--- a/erpnext/loan_management/doctype/loan_security_unpledge/loan_security_unpledge.py
+++ b/erpnext/loan_management/doctype/loan_security_unpledge/loan_security_unpledge.py
@@ -3,13 +3,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
-from frappe.utils import get_datetime, flt, getdate
-import json
+from frappe.utils import flt, get_datetime, getdate
 from six import iteritems
-from erpnext.loan_management.doctype.loan_security_price.loan_security_price import get_loan_security_price
+
 
 class LoanSecurityUnpledge(Document):
 	def validate(self):
@@ -30,7 +30,9 @@
 					d.idx, frappe.bold(d.loan_security)))
 
 	def validate_unpledge_qty(self):
-		from erpnext.loan_management.doctype.loan_security_shortfall.loan_security_shortfall import get_ltv_ratio
+		from erpnext.loan_management.doctype.loan_security_shortfall.loan_security_shortfall import (
+			get_ltv_ratio,
+		)
 
 		pledge_qty_map = get_pledged_security_qty(self.loan)
 
diff --git a/erpnext/loan_management/doctype/loan_security_unpledge/test_loan_security_unpledge.py b/erpnext/loan_management/doctype/loan_security_unpledge/test_loan_security_unpledge.py
index 5b5c205..17eb7c6 100644
--- a/erpnext/loan_management/doctype/loan_security_unpledge/test_loan_security_unpledge.py
+++ b/erpnext/loan_management/doctype/loan_security_unpledge/test_loan_security_unpledge.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestLoanSecurityUnpledge(unittest.TestCase):
 	pass
diff --git a/erpnext/loan_management/doctype/loan_type/loan_type.py b/erpnext/loan_management/doctype/loan_type/loan_type.py
index 50ef930..5458d35 100644
--- a/erpnext/loan_management/doctype/loan_type/loan_type.py
+++ b/erpnext/loan_management/doctype/loan_type/loan_type.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
 
+
 class LoanType(Document):
 	def validate(self):
 		self.validate_accounts()
diff --git a/erpnext/loan_management/doctype/loan_type/loan_type_dashboard.py b/erpnext/loan_management/doctype/loan_type/loan_type_dashboard.py
index 95d97fd..96b2c4a 100644
--- a/erpnext/loan_management/doctype/loan_type/loan_type_dashboard.py
+++ b/erpnext/loan_management/doctype/loan_type/loan_type_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
 	return {
diff --git a/erpnext/loan_management/doctype/loan_type/test_loan_type.py b/erpnext/loan_management/doctype/loan_type/test_loan_type.py
index 5877ab6..9e57fde 100644
--- a/erpnext/loan_management/doctype/loan_type/test_loan_type.py
+++ b/erpnext/loan_management/doctype/loan_type/test_loan_type.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestLoanType(unittest.TestCase):
 	pass
diff --git a/erpnext/loan_management/doctype/loan_write_off/loan_write_off.py b/erpnext/loan_management/doctype/loan_write_off/loan_write_off.py
index 676df70..4d5e7df 100644
--- a/erpnext/loan_management/doctype/loan_write_off/loan_write_off.py
+++ b/erpnext/loan_management/doctype/loan_write_off/loan_write_off.py
@@ -3,11 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
+
+import frappe
 from frappe import _
-from frappe.utils import getdate, flt, cint
-from erpnext.controllers.accounts_controller import AccountsController
+from frappe.utils import cint, flt, getdate
+
+import erpnext
 from erpnext.accounts.general_ledger import make_gl_entries
+from erpnext.controllers.accounts_controller import AccountsController
+
 
 class LoanWriteOff(AccountsController):
 	def validate(self):
diff --git a/erpnext/loan_management/doctype/loan_write_off/test_loan_write_off.py b/erpnext/loan_management/doctype/loan_write_off/test_loan_write_off.py
index 9f6700e..57337c7 100644
--- a/erpnext/loan_management/doctype/loan_write_off/test_loan_write_off.py
+++ b/erpnext/loan_management/doctype/loan_write_off/test_loan_write_off.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestLoanWriteOff(unittest.TestCase):
 	pass
diff --git a/erpnext/loan_management/doctype/pledge/pledge.py b/erpnext/loan_management/doctype/pledge/pledge.py
index 0457ad7..5a41cde 100644
--- a/erpnext/loan_management/doctype/pledge/pledge.py
+++ b/erpnext/loan_management/doctype/pledge/pledge.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class Pledge(Document):
 	pass
diff --git a/erpnext/loan_management/doctype/pledge/test_pledge.py b/erpnext/loan_management/doctype/pledge/test_pledge.py
index 2e01dc1..adcbc6e 100644
--- a/erpnext/loan_management/doctype/pledge/test_pledge.py
+++ b/erpnext/loan_management/doctype/pledge/test_pledge.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestPledge(unittest.TestCase):
 	pass
diff --git a/erpnext/loan_management/doctype/process_loan_interest_accrual/process_loan_interest_accrual.py b/erpnext/loan_management/doctype/process_loan_interest_accrual/process_loan_interest_accrual.py
index 8c67c0a..efee701 100644
--- a/erpnext/loan_management/doctype/process_loan_interest_accrual/process_loan_interest_accrual.py
+++ b/erpnext/loan_management/doctype/process_loan_interest_accrual/process_loan_interest_accrual.py
@@ -3,11 +3,16 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import nowdate
 from frappe.model.document import Document
-from erpnext.loan_management.doctype.loan_interest_accrual.loan_interest_accrual import (make_accrual_interest_entry_for_demand_loans,
-	make_accrual_interest_entry_for_term_loans)
+from frappe.utils import nowdate
+
+from erpnext.loan_management.doctype.loan_interest_accrual.loan_interest_accrual import (
+	make_accrual_interest_entry_for_demand_loans,
+	make_accrual_interest_entry_for_term_loans,
+)
+
 
 class ProcessLoanInterestAccrual(Document):
 	def on_submit(self):
diff --git a/erpnext/loan_management/doctype/process_loan_interest_accrual/process_loan_interest_accrual_dashboard.py b/erpnext/loan_management/doctype/process_loan_interest_accrual/process_loan_interest_accrual_dashboard.py
index e104c66..fcd0399 100644
--- a/erpnext/loan_management/doctype/process_loan_interest_accrual/process_loan_interest_accrual_dashboard.py
+++ b/erpnext/loan_management/doctype/process_loan_interest_accrual/process_loan_interest_accrual_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
 	return {
diff --git a/erpnext/loan_management/doctype/process_loan_interest_accrual/test_process_loan_interest_accrual.py b/erpnext/loan_management/doctype/process_loan_interest_accrual/test_process_loan_interest_accrual.py
index 6bfd3f4..e7d3602 100644
--- a/erpnext/loan_management/doctype/process_loan_interest_accrual/test_process_loan_interest_accrual.py
+++ b/erpnext/loan_management/doctype/process_loan_interest_accrual/test_process_loan_interest_accrual.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestProcessLoanInterestAccrual(unittest.TestCase):
 	pass
diff --git a/erpnext/loan_management/doctype/process_loan_security_shortfall/process_loan_security_shortfall.py b/erpnext/loan_management/doctype/process_loan_security_shortfall/process_loan_security_shortfall.py
index b4aad25..c3f5954 100644
--- a/erpnext/loan_management/doctype/process_loan_security_shortfall/process_loan_security_shortfall.py
+++ b/erpnext/loan_management/doctype/process_loan_security_shortfall/process_loan_security_shortfall.py
@@ -3,11 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import get_datetime
-from frappe import _
 from frappe.model.document import Document
-from erpnext.loan_management.doctype.loan_security_shortfall.loan_security_shortfall import check_for_ltv_shortfall
+from frappe.utils import get_datetime
+
+from erpnext.loan_management.doctype.loan_security_shortfall.loan_security_shortfall import (
+	check_for_ltv_shortfall,
+)
+
 
 class ProcessLoanSecurityShortfall(Document):
 	def onload(self):
diff --git a/erpnext/loan_management/doctype/process_loan_security_shortfall/process_loan_security_shortfall_dashboard.py b/erpnext/loan_management/doctype/process_loan_security_shortfall/process_loan_security_shortfall_dashboard.py
index e67e4d4..ced3bd7 100644
--- a/erpnext/loan_management/doctype/process_loan_security_shortfall/process_loan_security_shortfall_dashboard.py
+++ b/erpnext/loan_management/doctype/process_loan_security_shortfall/process_loan_security_shortfall_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
 	return {
diff --git a/erpnext/loan_management/doctype/process_loan_security_shortfall/test_process_loan_security_shortfall.py b/erpnext/loan_management/doctype/process_loan_security_shortfall/test_process_loan_security_shortfall.py
index cd379a1..50e0a46 100644
--- a/erpnext/loan_management/doctype/process_loan_security_shortfall/test_process_loan_security_shortfall.py
+++ b/erpnext/loan_management/doctype/process_loan_security_shortfall/test_process_loan_security_shortfall.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestProcessLoanSecurityShortfall(unittest.TestCase):
 	pass
diff --git a/erpnext/loan_management/doctype/proposed_pledge/proposed_pledge.py b/erpnext/loan_management/doctype/proposed_pledge/proposed_pledge.py
index dfa5c79..5c125e1 100644
--- a/erpnext/loan_management/doctype/proposed_pledge/proposed_pledge.py
+++ b/erpnext/loan_management/doctype/proposed_pledge/proposed_pledge.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class ProposedPledge(Document):
 	pass
diff --git a/erpnext/loan_management/doctype/repayment_schedule/repayment_schedule.py b/erpnext/loan_management/doctype/repayment_schedule/repayment_schedule.py
index 2aa27b0..af9c669 100644
--- a/erpnext/loan_management/doctype/repayment_schedule/repayment_schedule.py
+++ b/erpnext/loan_management/doctype/repayment_schedule/repayment_schedule.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class RepaymentSchedule(Document):
 	pass
diff --git a/erpnext/loan_management/doctype/salary_slip_loan/salary_slip_loan.py b/erpnext/loan_management/doctype/salary_slip_loan/salary_slip_loan.py
index 9ee0b96..64be1b2 100644
--- a/erpnext/loan_management/doctype/salary_slip_loan/salary_slip_loan.py
+++ b/erpnext/loan_management/doctype/salary_slip_loan/salary_slip_loan.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class SalarySlipLoan(Document):
 	pass
diff --git a/erpnext/loan_management/doctype/sanctioned_loan_amount/sanctioned_loan_amount.py b/erpnext/loan_management/doctype/sanctioned_loan_amount/sanctioned_loan_amount.py
index 7ed838d..5660c42 100644
--- a/erpnext/loan_management/doctype/sanctioned_loan_amount/sanctioned_loan_amount.py
+++ b/erpnext/loan_management/doctype/sanctioned_loan_amount/sanctioned_loan_amount.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
 
+
 class SanctionedLoanAmount(Document):
 	def validate(self):
 		sanctioned_doc = frappe.db.exists('Sanctioned Loan Amount', {'applicant': self.applicant, 'company': self.company})
diff --git a/erpnext/loan_management/doctype/sanctioned_loan_amount/test_sanctioned_loan_amount.py b/erpnext/loan_management/doctype/sanctioned_loan_amount/test_sanctioned_loan_amount.py
index ba1372f..663f2e7 100644
--- a/erpnext/loan_management/doctype/sanctioned_loan_amount/test_sanctioned_loan_amount.py
+++ b/erpnext/loan_management/doctype/sanctioned_loan_amount/test_sanctioned_loan_amount.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestSanctionedLoanAmount(unittest.TestCase):
 	pass
diff --git a/erpnext/loan_management/doctype/unpledge/unpledge.py b/erpnext/loan_management/doctype/unpledge/unpledge.py
index 205230a..2e82e23 100644
--- a/erpnext/loan_management/doctype/unpledge/unpledge.py
+++ b/erpnext/loan_management/doctype/unpledge/unpledge.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class Unpledge(Document):
 	pass
diff --git a/erpnext/loan_management/report/applicant_wise_loan_security_exposure/applicant_wise_loan_security_exposure.py b/erpnext/loan_management/report/applicant_wise_loan_security_exposure/applicant_wise_loan_security_exposure.py
index f2cbbb4..ff52702 100644
--- a/erpnext/loan_management/report/applicant_wise_loan_security_exposure/applicant_wise_loan_security_exposure.py
+++ b/erpnext/loan_management/report/applicant_wise_loan_security_exposure/applicant_wise_loan_security_exposure.py
@@ -2,12 +2,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-import erpnext
 from frappe import _
-from frappe.utils import get_datetime, flt
+from frappe.utils import flt
 from six import iteritems
 
+import erpnext
+
+
 def execute(filters=None):
 	columns = get_columns(filters)
 	data = get_data(filters)
diff --git a/erpnext/loan_management/report/loan_interest_report/loan_interest_report.py b/erpnext/loan_management/report/loan_interest_report/loan_interest_report.py
index a505e72..c4adef1 100644
--- a/erpnext/loan_management/report/loan_interest_report/loan_interest_report.py
+++ b/erpnext/loan_management/report/loan_interest_report/loan_interest_report.py
@@ -2,12 +2,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-import erpnext
 from frappe import _
-from frappe.utils import flt, getdate, add_days
-from erpnext.loan_management.report.applicant_wise_loan_security_exposure.applicant_wise_loan_security_exposure \
-	 import get_loan_security_details
+from frappe.utils import add_days, flt, getdate
+
+import erpnext
+from erpnext.loan_management.report.applicant_wise_loan_security_exposure.applicant_wise_loan_security_exposure import (
+	get_loan_security_details,
+)
 
 
 def execute(filters=None):
diff --git a/erpnext/loan_management/report/loan_repayment_and_closure/loan_repayment_and_closure.py b/erpnext/loan_management/report/loan_repayment_and_closure/loan_repayment_and_closure.py
index 6591077..9d8a425 100644
--- a/erpnext/loan_management/report/loan_repayment_and_closure/loan_repayment_and_closure.py
+++ b/erpnext/loan_management/report/loan_repayment_and_closure/loan_repayment_and_closure.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 def execute(filters=None):
 	columns = get_columns()
 	data = get_data(filters)
diff --git a/erpnext/loan_management/report/loan_security_exposure/loan_security_exposure.py b/erpnext/loan_management/report/loan_security_exposure/loan_security_exposure.py
index 34bbe5a..3d6242a 100644
--- a/erpnext/loan_management/report/loan_security_exposure/loan_security_exposure.py
+++ b/erpnext/loan_management/report/loan_security_exposure/loan_security_exposure.py
@@ -2,12 +2,17 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import erpnext
+
 from frappe import _
 from frappe.utils import flt
 from six import iteritems
-from erpnext.loan_management.report.applicant_wise_loan_security_exposure.applicant_wise_loan_security_exposure \
-	 import get_loan_security_details, get_applicant_wise_total_loan_security_qty
+
+import erpnext
+from erpnext.loan_management.report.applicant_wise_loan_security_exposure.applicant_wise_loan_security_exposure import (
+	get_applicant_wise_total_loan_security_qty,
+	get_loan_security_details,
+)
+
 
 def execute(filters=None):
 	columns = get_columns(filters)
diff --git a/erpnext/loan_management/report/loan_security_status/loan_security_status.py b/erpnext/loan_management/report/loan_security_status/loan_security_status.py
index 1951855..a93a381 100644
--- a/erpnext/loan_management/report/loan_security_status/loan_security_status.py
+++ b/erpnext/loan_management/report/loan_security_status/loan_security_status.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 def execute(filters=None):
 	columns = get_columns(filters)
 	data = get_data(filters)
diff --git a/erpnext/maintenance/doctype/maintenance_schedule/maintenance_schedule.py b/erpnext/maintenance/doctype/maintenance_schedule/maintenance_schedule.py
index 9728903..52e41c5 100644
--- a/erpnext/maintenance/doctype/maintenance_schedule/maintenance_schedule.py
+++ b/erpnext/maintenance/doctype/maintenance_schedule/maintenance_schedule.py
@@ -2,15 +2,16 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
+from frappe import _, throw
+from frappe.utils import add_days, cint, cstr, date_diff, formatdate, getdate
 
-from frappe.utils import add_days, getdate, cint, cstr, date_diff, formatdate
-
-from frappe import throw, _
-from erpnext.utilities.transaction_base import TransactionBase, delete_events
-from erpnext.stock.utils import get_valid_serial_nos
 from erpnext.hr.doctype.employee.employee import get_holiday_list_for_employee
 from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
+from erpnext.stock.utils import get_valid_serial_nos
+from erpnext.utilities.transaction_base import TransactionBase, delete_events
+
 
 class MaintenanceSchedule(TransactionBase):
 	@frappe.whitelist()
diff --git a/erpnext/maintenance/doctype/maintenance_schedule/test_maintenance_schedule.py b/erpnext/maintenance/doctype/maintenance_schedule/test_maintenance_schedule.py
index c733dd0..38654de 100644
--- a/erpnext/maintenance/doctype/maintenance_schedule/test_maintenance_schedule.py
+++ b/erpnext/maintenance/doctype/maintenance_schedule/test_maintenance_schedule.py
@@ -2,11 +2,15 @@
 # Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
-from frappe.utils.data import add_days, today, formatdate
-from erpnext.maintenance.doctype.maintenance_schedule.maintenance_schedule import make_maintenance_visit
+
+import unittest
 
 import frappe
-import unittest
+from frappe.utils.data import add_days, formatdate, today
+
+from erpnext.maintenance.doctype.maintenance_schedule.maintenance_schedule import (
+	make_maintenance_visit,
+)
 
 # test_records = frappe.get_test_records('Maintenance Schedule')
 
diff --git a/erpnext/maintenance/doctype/maintenance_schedule_detail/maintenance_schedule_detail.py b/erpnext/maintenance/doctype/maintenance_schedule_detail/maintenance_schedule_detail.py
index e69b4fb..27c95a1 100644
--- a/erpnext/maintenance/doctype/maintenance_schedule_detail/maintenance_schedule_detail.py
+++ b/erpnext/maintenance/doctype/maintenance_schedule_detail/maintenance_schedule_detail.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class MaintenanceScheduleDetail(Document):
 	pass
diff --git a/erpnext/maintenance/doctype/maintenance_schedule_item/maintenance_schedule_item.py b/erpnext/maintenance/doctype/maintenance_schedule_item/maintenance_schedule_item.py
index 1dd47fe..9c4a690 100644
--- a/erpnext/maintenance/doctype/maintenance_schedule_item/maintenance_schedule_item.py
+++ b/erpnext/maintenance/doctype/maintenance_schedule_item/maintenance_schedule_item.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class MaintenanceScheduleItem(Document):
 	pass
diff --git a/erpnext/maintenance/doctype/maintenance_visit/maintenance_visit.py b/erpnext/maintenance/doctype/maintenance_visit/maintenance_visit.py
index d63c700..814ec0c 100644
--- a/erpnext/maintenance/doctype/maintenance_visit/maintenance_visit.py
+++ b/erpnext/maintenance/doctype/maintenance_visit/maintenance_visit.py
@@ -2,12 +2,14 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import get_datetime
 
 from erpnext.utilities.transaction_base import TransactionBase
 
+
 class MaintenanceVisit(TransactionBase):
 	def get_feed(self):
 		return _("To {0}").format(self.customer_name)
diff --git a/erpnext/maintenance/doctype/maintenance_visit/test_maintenance_visit.py b/erpnext/maintenance/doctype/maintenance_visit/test_maintenance_visit.py
index 2bea8d1..57e728d 100644
--- a/erpnext/maintenance/doctype/maintenance_visit/test_maintenance_visit.py
+++ b/erpnext/maintenance/doctype/maintenance_visit/test_maintenance_visit.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Maintenance Visit')
diff --git a/erpnext/maintenance/doctype/maintenance_visit_purpose/maintenance_visit_purpose.py b/erpnext/maintenance/doctype/maintenance_visit_purpose/maintenance_visit_purpose.py
index a7f0f5b..4c59562 100644
--- a/erpnext/maintenance/doctype/maintenance_visit_purpose/maintenance_visit_purpose.py
+++ b/erpnext/maintenance/doctype/maintenance_visit_purpose/maintenance_visit_purpose.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class MaintenanceVisitPurpose(Document):
 	pass
diff --git a/erpnext/manufacturing/dashboard_fixtures.py b/erpnext/manufacturing/dashboard_fixtures.py
index 7ba43d6..1bc12ff 100644
--- a/erpnext/manufacturing/dashboard_fixtures.py
+++ b/erpnext/manufacturing/dashboard_fixtures.py
@@ -1,9 +1,14 @@
 # Copyright (c) 2020, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 
-import frappe, erpnext, json
+import json
+
+import frappe
 from frappe import _
-from frappe.utils import nowdate, get_first_day, get_last_day, add_months
+from frappe.utils import add_months, nowdate
+
+import erpnext
+
 
 def get_data():
 	return frappe._dict({
diff --git a/erpnext/manufacturing/doctype/blanket_order/blanket_order.py b/erpnext/manufacturing/doctype/blanket_order/blanket_order.py
index 1aedb1e..59eb168 100644
--- a/erpnext/manufacturing/doctype/blanket_order/blanket_order.py
+++ b/erpnext/manufacturing/doctype/blanket_order/blanket_order.py
@@ -3,11 +3,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import flt, getdate
 from frappe.model.document import Document
 from frappe.model.mapper import get_mapped_doc
+from frappe.utils import flt, getdate
+
 from erpnext.stock.doctype.item.item import get_item_defaults
 
 
diff --git a/erpnext/manufacturing/doctype/blanket_order/blanket_order_dashboard.py b/erpnext/manufacturing/doctype/blanket_order/blanket_order_dashboard.py
index d9aa0ca..83260ec 100644
--- a/erpnext/manufacturing/doctype/blanket_order/blanket_order_dashboard.py
+++ b/erpnext/manufacturing/doctype/blanket_order/blanket_order_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
 	return {
diff --git a/erpnext/manufacturing/doctype/blanket_order/test_blanket_order.py b/erpnext/manufacturing/doctype/blanket_order/test_blanket_order.py
index 9a0a72f..3104ae0 100644
--- a/erpnext/manufacturing/doctype/blanket_order/test_blanket_order.py
+++ b/erpnext/manufacturing/doctype/blanket_order/test_blanket_order.py
@@ -3,12 +3,16 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
+import frappe
 from frappe.utils import add_months, today
+
 from erpnext import get_company_currency
+
 from .blanket_order import make_order
 
+
 class TestBlanketOrder(unittest.TestCase):
 	def setUp(self):
 		frappe.flags.args = frappe._dict()
diff --git a/erpnext/manufacturing/doctype/blanket_order_item/blanket_order_item.py b/erpnext/manufacturing/doctype/blanket_order_item/blanket_order_item.py
index f07f3c8..0825f76 100644
--- a/erpnext/manufacturing/doctype/blanket_order_item/blanket_order_item.py
+++ b/erpnext/manufacturing/doctype/blanket_order_item/blanket_order_item.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class BlanketOrderItem(Document):
 	pass
diff --git a/erpnext/manufacturing/doctype/bom/bom.py b/erpnext/manufacturing/doctype/bom/bom.py
index 6e1c7dd..28a84b2 100644
--- a/erpnext/manufacturing/doctype/bom/bom.py
+++ b/erpnext/manufacturing/doctype/bom/bom.py
@@ -1,23 +1,22 @@
 # Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 
-from typing import List
-from collections import deque
-import frappe, erpnext
-from frappe.utils import cint, cstr, flt, today
-from frappe import _
-from erpnext.setup.utils import get_exchange_rate
-from frappe.website.website_generator import WebsiteGenerator
-from erpnext.stock.get_item_details import get_conversion_factor
-from erpnext.stock.get_item_details import get_price_list_rate
-from frappe.core.doctype.version.version import get_diff
-from erpnext.controllers.queries import get_match_cond
-from erpnext.stock.doctype.item.item import get_item_details
-from frappe.model.mapper import get_mapped_doc
-
 import functools
-
+from collections import deque
 from operator import itemgetter
+from typing import List
+
+import frappe
+from frappe import _
+from frappe.core.doctype.version.version import get_diff
+from frappe.model.mapper import get_mapped_doc
+from frappe.utils import cint, cstr, flt, today
+from frappe.website.website_generator import WebsiteGenerator
+
+import erpnext
+from erpnext.setup.utils import get_exchange_rate
+from erpnext.stock.doctype.item.item import get_item_details
+from erpnext.stock.get_item_details import get_conversion_factor, get_price_list_rate
 
 form_grid_templates = {
 	"items": "templates/form_grid/item_grid.html"
diff --git a/erpnext/manufacturing/doctype/bom/bom_dashboard.py b/erpnext/manufacturing/doctype/bom/bom_dashboard.py
index 361826e..f65df01 100644
--- a/erpnext/manufacturing/doctype/bom/bom_dashboard.py
+++ b/erpnext/manufacturing/doctype/bom/bom_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'bom_no',
diff --git a/erpnext/manufacturing/doctype/bom/test_bom.py b/erpnext/manufacturing/doctype/bom/test_bom.py
index 8408f10..7950dd9 100644
--- a/erpnext/manufacturing/doctype/bom/test_bom.py
+++ b/erpnext/manufacturing/doctype/bom/test_bom.py
@@ -2,16 +2,20 @@
 # License: GNU General Public License v3. See license.txt
 
 
-from collections import deque
 import unittest
+from collections import deque
+
 import frappe
-from frappe.utils import cstr, flt
 from frappe.test_runner import make_test_records
-from erpnext.stock.doctype.stock_reconciliation.test_stock_reconciliation import create_stock_reconciliation
+from frappe.utils import cstr, flt
+
+from erpnext.buying.doctype.purchase_order.test_purchase_order import create_purchase_order
 from erpnext.manufacturing.doctype.bom.bom import make_variant_bom
 from erpnext.manufacturing.doctype.bom_update_tool.bom_update_tool import update_cost
 from erpnext.stock.doctype.item.test_item import make_item
-from erpnext.buying.doctype.purchase_order.test_purchase_order import create_purchase_order
+from erpnext.stock.doctype.stock_reconciliation.test_stock_reconciliation import (
+	create_stock_reconciliation,
+)
 from erpnext.tests.test_subcontracting import set_backflush_based_on
 
 test_records = frappe.get_test_records('BOM')
diff --git a/erpnext/manufacturing/doctype/bom_explosion_item/bom_explosion_item.py b/erpnext/manufacturing/doctype/bom_explosion_item/bom_explosion_item.py
index 39ccbdd..4317d3a 100644
--- a/erpnext/manufacturing/doctype/bom_explosion_item/bom_explosion_item.py
+++ b/erpnext/manufacturing/doctype/bom_explosion_item/bom_explosion_item.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class BOMExplosionItem(Document):
 	pass
diff --git a/erpnext/manufacturing/doctype/bom_item/bom_item.py b/erpnext/manufacturing/doctype/bom_item/bom_item.py
index 220c73e..2954238 100644
--- a/erpnext/manufacturing/doctype/bom_item/bom_item.py
+++ b/erpnext/manufacturing/doctype/bom_item/bom_item.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class BOMItem(Document):
 	pass
diff --git a/erpnext/manufacturing/doctype/bom_operation/bom_operation.py b/erpnext/manufacturing/doctype/bom_operation/bom_operation.py
index e3501eb..5e46c7e 100644
--- a/erpnext/manufacturing/doctype/bom_operation/bom_operation.py
+++ b/erpnext/manufacturing/doctype/bom_operation/bom_operation.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class BOMOperation(Document):
 	pass
diff --git a/erpnext/manufacturing/doctype/bom_scrap_item/bom_scrap_item.py b/erpnext/manufacturing/doctype/bom_scrap_item/bom_scrap_item.py
index b6d423f..891fc53 100644
--- a/erpnext/manufacturing/doctype/bom_scrap_item/bom_scrap_item.py
+++ b/erpnext/manufacturing/doctype/bom_scrap_item/bom_scrap_item.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class BOMScrapItem(Document):
 	pass
diff --git a/erpnext/manufacturing/doctype/bom_update_tool/bom_update_tool.py b/erpnext/manufacturing/doctype/bom_update_tool/bom_update_tool.py
index 8fbcd4e..ed71c6d 100644
--- a/erpnext/manufacturing/doctype/bom_update_tool/bom_update_tool.py
+++ b/erpnext/manufacturing/doctype/bom_update_tool/bom_update_tool.py
@@ -3,13 +3,18 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, json
-from frappe.utils import cstr, flt
-from frappe import _
-from six import string_types
-from erpnext.manufacturing.doctype.bom.bom import get_boms_in_bottom_up_order
-from frappe.model.document import Document
+
+import json
+
 import click
+import frappe
+from frappe import _
+from frappe.model.document import Document
+from frappe.utils import cstr, flt
+from six import string_types
+
+from erpnext.manufacturing.doctype.bom.bom import get_boms_in_bottom_up_order
+
 
 class BOMUpdateTool(Document):
 	def replace_bom(self):
diff --git a/erpnext/manufacturing/doctype/bom_update_tool/test_bom_update_tool.py b/erpnext/manufacturing/doctype/bom_update_tool/test_bom_update_tool.py
index 80d1cdf..88c69ce 100644
--- a/erpnext/manufacturing/doctype/bom_update_tool/test_bom_update_tool.py
+++ b/erpnext/manufacturing/doctype/bom_update_tool/test_bom_update_tool.py
@@ -3,11 +3,14 @@
 
 
 from __future__ import unicode_literals
+
 import unittest
+
 import frappe
-from erpnext.stock.doctype.item.test_item import create_item
-from erpnext.manufacturing.doctype.production_plan.test_production_plan import make_bom
+
 from erpnext.manufacturing.doctype.bom_update_tool.bom_update_tool import update_cost
+from erpnext.manufacturing.doctype.production_plan.test_production_plan import make_bom
+from erpnext.stock.doctype.item.test_item import create_item
 
 test_records = frappe.get_test_records('BOM')
 
diff --git a/erpnext/manufacturing/doctype/bom_website_item/bom_website_item.py b/erpnext/manufacturing/doctype/bom_website_item/bom_website_item.py
index 4088a7f..f627b4e 100644
--- a/erpnext/manufacturing/doctype/bom_website_item/bom_website_item.py
+++ b/erpnext/manufacturing/doctype/bom_website_item/bom_website_item.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class BOMWebsiteItem(Document):
 	pass
diff --git a/erpnext/manufacturing/doctype/bom_website_operation/bom_website_operation.py b/erpnext/manufacturing/doctype/bom_website_operation/bom_website_operation.py
index bcc5dda..5bd8cf5 100644
--- a/erpnext/manufacturing/doctype/bom_website_operation/bom_website_operation.py
+++ b/erpnext/manufacturing/doctype/bom_website_operation/bom_website_operation.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class BOMWebsiteOperation(Document):
 	pass
diff --git a/erpnext/manufacturing/doctype/downtime_entry/downtime_entry.py b/erpnext/manufacturing/doctype/downtime_entry/downtime_entry.py
index 56ec435..62833d7 100644
--- a/erpnext/manufacturing/doctype/downtime_entry/downtime_entry.py
+++ b/erpnext/manufacturing/doctype/downtime_entry/downtime_entry.py
@@ -3,9 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe.utils import time_diff_in_hours
+
 from frappe.model.document import Document
+from frappe.utils import time_diff_in_hours
+
 
 class DowntimeEntry(Document):
 	def validate(self):
diff --git a/erpnext/manufacturing/doctype/downtime_entry/test_downtime_entry.py b/erpnext/manufacturing/doctype/downtime_entry/test_downtime_entry.py
index 8b2a8d3..37169f4 100644
--- a/erpnext/manufacturing/doctype/downtime_entry/test_downtime_entry.py
+++ b/erpnext/manufacturing/doctype/downtime_entry/test_downtime_entry.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestDowntimeEntry(unittest.TestCase):
 	pass
diff --git a/erpnext/manufacturing/doctype/job_card/job_card.py b/erpnext/manufacturing/doctype/job_card/job_card.py
index 3efbe88..3bf9de2 100644
--- a/erpnext/manufacturing/doctype/job_card/job_card.py
+++ b/erpnext/manufacturing/doctype/job_card/job_card.py
@@ -3,16 +3,32 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import datetime
 import json
-from frappe import _, bold
-from frappe.model.mapper import get_mapped_doc
-from frappe.model.document import Document
-from frappe.utils import (flt, cint, time_diff_in_hours, get_datetime, getdate,
-	get_time, add_to_date, time_diff, add_days, get_datetime_str, get_link_to_form, time_diff_in_seconds)
 
-from erpnext.manufacturing.doctype.manufacturing_settings.manufacturing_settings import get_mins_between_operations
+import frappe
+from frappe import _, bold
+from frappe.model.document import Document
+from frappe.model.mapper import get_mapped_doc
+from frappe.utils import (
+	add_days,
+	add_to_date,
+	cint,
+	flt,
+	get_datetime,
+	get_link_to_form,
+	get_time,
+	getdate,
+	time_diff,
+	time_diff_in_hours,
+	time_diff_in_seconds,
+)
+
+from erpnext.manufacturing.doctype.manufacturing_settings.manufacturing_settings import (
+	get_mins_between_operations,
+)
+
 
 class OverlapError(frappe.ValidationError): pass
 
diff --git a/erpnext/manufacturing/doctype/job_card/job_card_dashboard.py b/erpnext/manufacturing/doctype/job_card/job_card_dashboard.py
index c2aa2bd..3ec6697 100644
--- a/erpnext/manufacturing/doctype/job_card/job_card_dashboard.py
+++ b/erpnext/manufacturing/doctype/job_card/job_card_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'job_card',
diff --git a/erpnext/manufacturing/doctype/job_card/test_job_card.py b/erpnext/manufacturing/doctype/job_card/test_job_card.py
index 8fa0b27..db0e08f 100644
--- a/erpnext/manufacturing/doctype/job_card/test_job_card.py
+++ b/erpnext/manufacturing/doctype/job_card/test_job_card.py
@@ -4,11 +4,14 @@
 from __future__ import unicode_literals
 
 import unittest
+
 import frappe
 from frappe.utils import random_string
-from erpnext.manufacturing.doctype.workstation.test_workstation import make_workstation
-from erpnext.manufacturing.doctype.work_order.test_work_order import make_wo_order_test_record
+
 from erpnext.manufacturing.doctype.job_card.job_card import OperationMismatchError
+from erpnext.manufacturing.doctype.work_order.test_work_order import make_wo_order_test_record
+from erpnext.manufacturing.doctype.workstation.test_workstation import make_workstation
+
 
 class TestJobCard(unittest.TestCase):
 	def test_job_card(self):
diff --git a/erpnext/manufacturing/doctype/job_card_item/job_card_item.py b/erpnext/manufacturing/doctype/job_card_item/job_card_item.py
index 373cba2..a133836 100644
--- a/erpnext/manufacturing/doctype/job_card_item/job_card_item.py
+++ b/erpnext/manufacturing/doctype/job_card_item/job_card_item.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class JobCardItem(Document):
 	pass
diff --git a/erpnext/manufacturing/doctype/job_card_operation/job_card_operation.py b/erpnext/manufacturing/doctype/job_card_operation/job_card_operation.py
index 85d7298..43d1422 100644
--- a/erpnext/manufacturing/doctype/job_card_operation/job_card_operation.py
+++ b/erpnext/manufacturing/doctype/job_card_operation/job_card_operation.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class JobCardOperation(Document):
 	pass
diff --git a/erpnext/manufacturing/doctype/job_card_time_log/job_card_time_log.py b/erpnext/manufacturing/doctype/job_card_time_log/job_card_time_log.py
index 3dc6689..ed27e7f 100644
--- a/erpnext/manufacturing/doctype/job_card_time_log/job_card_time_log.py
+++ b/erpnext/manufacturing/doctype/job_card_time_log/job_card_time_log.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class JobCardTimeLog(Document):
 	pass
diff --git a/erpnext/manufacturing/doctype/manufacturing_settings/manufacturing_settings.py b/erpnext/manufacturing/doctype/manufacturing_settings/manufacturing_settings.py
index 149fe3e..18d78b5 100644
--- a/erpnext/manufacturing/doctype/manufacturing_settings/manufacturing_settings.py
+++ b/erpnext/manufacturing/doctype/manufacturing_settings/manufacturing_settings.py
@@ -2,10 +2,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
+from dateutil.relativedelta import relativedelta
 from frappe.model.document import Document
 from frappe.utils import cint
-from dateutil.relativedelta import relativedelta
+
 
 class ManufacturingSettings(Document):
 	pass
diff --git a/erpnext/manufacturing/doctype/manufacturing_settings/test_manufacturing_settings.py b/erpnext/manufacturing/doctype/manufacturing_settings/test_manufacturing_settings.py
index 7391f65..fd0ac72 100644
--- a/erpnext/manufacturing/doctype/manufacturing_settings/test_manufacturing_settings.py
+++ b/erpnext/manufacturing/doctype/manufacturing_settings/test_manufacturing_settings.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestManufacturingSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/manufacturing/doctype/material_request_plan_item/material_request_plan_item.py b/erpnext/manufacturing/doctype/material_request_plan_item/material_request_plan_item.py
index 73e369c..bc26644 100644
--- a/erpnext/manufacturing/doctype/material_request_plan_item/material_request_plan_item.py
+++ b/erpnext/manufacturing/doctype/material_request_plan_item/material_request_plan_item.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class MaterialRequestPlanItem(Document):
 	pass
diff --git a/erpnext/manufacturing/doctype/material_request_plan_item/test_material_request_plan_item.py b/erpnext/manufacturing/doctype/material_request_plan_item/test_material_request_plan_item.py
index dc43b69..2675af9 100644
--- a/erpnext/manufacturing/doctype/material_request_plan_item/test_material_request_plan_item.py
+++ b/erpnext/manufacturing/doctype/material_request_plan_item/test_material_request_plan_item.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestMaterialRequestPlanItem(unittest.TestCase):
 	pass
diff --git a/erpnext/manufacturing/doctype/operation/operation.py b/erpnext/manufacturing/doctype/operation/operation.py
index 374f320..2926f91 100644
--- a/erpnext/manufacturing/doctype/operation/operation.py
+++ b/erpnext/manufacturing/doctype/operation/operation.py
@@ -7,6 +7,7 @@
 from frappe import _
 from frappe.model.document import Document
 
+
 class Operation(Document):
 	def validate(self):
 		if not self.description:
diff --git a/erpnext/manufacturing/doctype/operation/operation_dashboard.py b/erpnext/manufacturing/doctype/operation/operation_dashboard.py
index 8deb9ec..284fd9d 100644
--- a/erpnext/manufacturing/doctype/operation/operation_dashboard.py
+++ b/erpnext/manufacturing/doctype/operation/operation_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'operation',
diff --git a/erpnext/manufacturing/doctype/operation/test_operation.py b/erpnext/manufacturing/doctype/operation/test_operation.py
index 8e7e723..2b24118 100644
--- a/erpnext/manufacturing/doctype/operation/test_operation.py
+++ b/erpnext/manufacturing/doctype/operation/test_operation.py
@@ -2,9 +2,10 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
 test_records = frappe.get_test_records('Operation')
 
 class TestOperation(unittest.TestCase):
diff --git a/erpnext/manufacturing/doctype/production_plan/production_plan.py b/erpnext/manufacturing/doctype/production_plan/production_plan.py
index 2c77c9c..91e5748 100644
--- a/erpnext/manufacturing/doctype/production_plan/production_plan.py
+++ b/erpnext/manufacturing/doctype/production_plan/production_plan.py
@@ -3,18 +3,32 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, json, copy
-from frappe import msgprint, _
+
+import copy
+import json
+
+import frappe
+from frappe import _, msgprint
+from frappe.model.document import Document
+from frappe.utils import (
+	add_days,
+	ceil,
+	cint,
+	comma_and,
+	flt,
+	get_link_to_form,
+	getdate,
+	now_datetime,
+	nowdate,
+)
+from frappe.utils.csvutils import build_csv_response
 from six import iteritems
 
-from frappe.model.document import Document
-from frappe.utils import (flt, cint, nowdate, add_days, comma_and, now_datetime,
-	ceil, get_link_to_form, getdate)
-from frappe.utils.csvutils import build_csv_response
-from erpnext.manufacturing.doctype.bom.bom import validate_bom_no, get_children
+from erpnext.manufacturing.doctype.bom.bom import get_children, validate_bom_no
 from erpnext.manufacturing.doctype.work_order.work_order import get_item_details
 from erpnext.setup.doctype.item_group.item_group import get_item_group_defaults
 
+
 class ProductionPlan(Document):
 	def validate(self):
 		self.calculate_total_planned_qty()
@@ -453,7 +467,10 @@
 		})
 
 	def create_work_order(self, item):
-		from erpnext.manufacturing.doctype.work_order.work_order import OverProductionError, get_default_warehouse
+		from erpnext.manufacturing.doctype.work_order.work_order import (
+			OverProductionError,
+			get_default_warehouse,
+		)
 		warehouse = get_default_warehouse()
 		wo = frappe.new_doc("Work Order")
 		wo.update(item)
diff --git a/erpnext/manufacturing/doctype/production_plan/production_plan_dashboard.py b/erpnext/manufacturing/doctype/production_plan/production_plan_dashboard.py
index 52a56af..b4bc346 100644
--- a/erpnext/manufacturing/doctype/production_plan/production_plan_dashboard.py
+++ b/erpnext/manufacturing/doctype/production_plan/production_plan_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'production_plan',
diff --git a/erpnext/manufacturing/doctype/production_plan/test_production_plan.py b/erpnext/manufacturing/doctype/production_plan/test_production_plan.py
index 7802803..6a942d5 100644
--- a/erpnext/manufacturing/doctype/production_plan/test_production_plan.py
+++ b/erpnext/manufacturing/doctype/production_plan/test_production_plan.py
@@ -3,15 +3,23 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import nowdate, now_datetime, flt, add_to_date
-from erpnext.stock.doctype.item.test_item import create_item
-from erpnext.manufacturing.doctype.production_plan.production_plan import get_sales_orders
-from erpnext.stock.doctype.stock_reconciliation.test_stock_reconciliation import create_stock_reconciliation
-from erpnext.selling.doctype.sales_order.test_sales_order import make_sales_order
-from erpnext.manufacturing.doctype.production_plan.production_plan import get_items_for_material_requests, get_warehouse_list
+
+import frappe
+from frappe.utils import add_to_date, flt, now_datetime, nowdate
+
 from erpnext.controllers.item_variant import create_variant
+from erpnext.manufacturing.doctype.production_plan.production_plan import (
+	get_items_for_material_requests,
+	get_sales_orders,
+	get_warehouse_list,
+)
+from erpnext.selling.doctype.sales_order.test_sales_order import make_sales_order
+from erpnext.stock.doctype.item.test_item import create_item
+from erpnext.stock.doctype.stock_reconciliation.test_stock_reconciliation import (
+	create_stock_reconciliation,
+)
+
 
 class TestProductionPlan(unittest.TestCase):
 	def setUp(self):
diff --git a/erpnext/manufacturing/doctype/production_plan_item/production_plan_item.py b/erpnext/manufacturing/doctype/production_plan_item/production_plan_item.py
index 37cf5a4..24029d8 100644
--- a/erpnext/manufacturing/doctype/production_plan_item/production_plan_item.py
+++ b/erpnext/manufacturing/doctype/production_plan_item/production_plan_item.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class ProductionPlanItem(Document):
 	pass
diff --git a/erpnext/manufacturing/doctype/production_plan_item_reference/production_plan_item_reference.py b/erpnext/manufacturing/doctype/production_plan_item_reference/production_plan_item_reference.py
index 51fbc36..9d25d6f 100644
--- a/erpnext/manufacturing/doctype/production_plan_item_reference/production_plan_item_reference.py
+++ b/erpnext/manufacturing/doctype/production_plan_item_reference/production_plan_item_reference.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class ProductionPlanItemReference(Document):
 	pass
diff --git a/erpnext/manufacturing/doctype/production_plan_material_request/production_plan_material_request.py b/erpnext/manufacturing/doctype/production_plan_material_request/production_plan_material_request.py
index 44786f8..d1d935c 100644
--- a/erpnext/manufacturing/doctype/production_plan_material_request/production_plan_material_request.py
+++ b/erpnext/manufacturing/doctype/production_plan_material_request/production_plan_material_request.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ProductionPlanMaterialRequest(Document):
 	pass
diff --git a/erpnext/manufacturing/doctype/production_plan_material_request_warehouse/production_plan_material_request_warehouse.py b/erpnext/manufacturing/doctype/production_plan_material_request_warehouse/production_plan_material_request_warehouse.py
index f605985..1548bd7 100644
--- a/erpnext/manufacturing/doctype/production_plan_material_request_warehouse/production_plan_material_request_warehouse.py
+++ b/erpnext/manufacturing/doctype/production_plan_material_request_warehouse/production_plan_material_request_warehouse.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class ProductionPlanMaterialRequestWarehouse(Document):
 	pass
diff --git a/erpnext/manufacturing/doctype/production_plan_material_request_warehouse/test_production_plan_material_request_warehouse.py b/erpnext/manufacturing/doctype/production_plan_material_request_warehouse/test_production_plan_material_request_warehouse.py
index ecab5fb..905252d 100644
--- a/erpnext/manufacturing/doctype/production_plan_material_request_warehouse/test_production_plan_material_request_warehouse.py
+++ b/erpnext/manufacturing/doctype/production_plan_material_request_warehouse/test_production_plan_material_request_warehouse.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestProductionPlanMaterialRequestWarehouse(unittest.TestCase):
 	pass
diff --git a/erpnext/manufacturing/doctype/production_plan_sales_order/production_plan_sales_order.py b/erpnext/manufacturing/doctype/production_plan_sales_order/production_plan_sales_order.py
index 99c7273..ea53a98 100644
--- a/erpnext/manufacturing/doctype/production_plan_sales_order/production_plan_sales_order.py
+++ b/erpnext/manufacturing/doctype/production_plan_sales_order/production_plan_sales_order.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class ProductionPlanSalesOrder(Document):
 	pass
diff --git a/erpnext/manufacturing/doctype/production_plan_sub_assembly_item/production_plan_sub_assembly_item.py b/erpnext/manufacturing/doctype/production_plan_sub_assembly_item/production_plan_sub_assembly_item.py
index 6850a2e..be0ed1b 100644
--- a/erpnext/manufacturing/doctype/production_plan_sub_assembly_item/production_plan_sub_assembly_item.py
+++ b/erpnext/manufacturing/doctype/production_plan_sub_assembly_item/production_plan_sub_assembly_item.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class ProductionPlanSubAssemblyItem(Document):
 	pass
diff --git a/erpnext/manufacturing/doctype/routing/routing.py b/erpnext/manufacturing/doctype/routing/routing.py
index ece0db7..20fb370 100644
--- a/erpnext/manufacturing/doctype/routing/routing.py
+++ b/erpnext/manufacturing/doctype/routing/routing.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import cint, flt
 from frappe import _
 from frappe.model.document import Document
+from frappe.utils import cint, flt
+
 
 class Routing(Document):
 	def validate(self):
diff --git a/erpnext/manufacturing/doctype/routing/routing_dashboard.py b/erpnext/manufacturing/doctype/routing/routing_dashboard.py
index 50a3fe6..9ef6ee5 100644
--- a/erpnext/manufacturing/doctype/routing/routing_dashboard.py
+++ b/erpnext/manufacturing/doctype/routing/routing_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
 	return {
diff --git a/erpnext/manufacturing/doctype/routing/test_routing.py b/erpnext/manufacturing/doctype/routing/test_routing.py
index 92f2694..b84b2ba 100644
--- a/erpnext/manufacturing/doctype/routing/test_routing.py
+++ b/erpnext/manufacturing/doctype/routing/test_routing.py
@@ -4,11 +4,14 @@
 from __future__ import unicode_literals
 
 import unittest
+
 import frappe
 from frappe.test_runner import make_test_records
-from erpnext.stock.doctype.item.test_item import make_item
+
 from erpnext.manufacturing.doctype.job_card.job_card import OperationSequenceError
 from erpnext.manufacturing.doctype.work_order.test_work_order import make_wo_order_test_record
+from erpnext.stock.doctype.item.test_item import make_item
+
 
 class TestRouting(unittest.TestCase):
 	@classmethod
@@ -91,8 +94,8 @@
 
 
 def setup_operations(rows):
-	from erpnext.manufacturing.doctype.workstation.test_workstation import make_workstation
 	from erpnext.manufacturing.doctype.operation.test_operation import make_operation
+	from erpnext.manufacturing.doctype.workstation.test_workstation import make_workstation
 	for row in rows:
 		make_workstation(row)
 		make_operation(row)
diff --git a/erpnext/manufacturing/doctype/sub_operation/sub_operation.py b/erpnext/manufacturing/doctype/sub_operation/sub_operation.py
index f4b2775..37b64f2 100644
--- a/erpnext/manufacturing/doctype/sub_operation/sub_operation.py
+++ b/erpnext/manufacturing/doctype/sub_operation/sub_operation.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class SubOperation(Document):
 	pass
diff --git a/erpnext/manufacturing/doctype/sub_operation/test_sub_operation.py b/erpnext/manufacturing/doctype/sub_operation/test_sub_operation.py
index d3410ca..c5749db 100644
--- a/erpnext/manufacturing/doctype/sub_operation/test_sub_operation.py
+++ b/erpnext/manufacturing/doctype/sub_operation/test_sub_operation.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestSubOperation(unittest.TestCase):
 	pass
diff --git a/erpnext/manufacturing/doctype/work_order/test_work_order.py b/erpnext/manufacturing/doctype/work_order/test_work_order.py
index c0ed611..bb43149 100644
--- a/erpnext/manufacturing/doctype/work_order/test_work_order.py
+++ b/erpnext/manufacturing/doctype/work_order/test_work_order.py
@@ -3,18 +3,28 @@
 
 
 from __future__ import unicode_literals
+
 import unittest
+
 import frappe
-from frappe.utils import flt, now, add_months, cint, today, add_to_date
-from erpnext.manufacturing.doctype.work_order.work_order import (make_stock_entry,
-	ItemHasVariantError, stop_unstop, StockOverProductionError, OverProductionError, CapacityError)
-from erpnext.stock.doctype.stock_entry import test_stock_entry
-from erpnext.stock.utils import get_bin
+from frappe.utils import add_months, cint, flt, now, today
+
+from erpnext.manufacturing.doctype.job_card.job_card import JobCardCancelError
+from erpnext.manufacturing.doctype.production_plan.test_production_plan import make_bom
+from erpnext.manufacturing.doctype.work_order.work_order import (
+	CapacityError,
+	ItemHasVariantError,
+	OverProductionError,
+	StockOverProductionError,
+	make_stock_entry,
+	stop_unstop,
+)
 from erpnext.selling.doctype.sales_order.test_sales_order import make_sales_order
 from erpnext.stock.doctype.item.test_item import make_item
-from erpnext.manufacturing.doctype.production_plan.test_production_plan import make_bom
+from erpnext.stock.doctype.stock_entry import test_stock_entry
 from erpnext.stock.doctype.warehouse.test_warehouse import create_warehouse
-from erpnext.manufacturing.doctype.job_card.job_card import JobCardCancelError
+from erpnext.stock.utils import get_bin
+
 
 class TestWorkOrder(unittest.TestCase):
 	def setUp(self):
@@ -696,8 +706,10 @@
 		self.assertRaises(frappe.ValidationError, make_stock_entry, wo.name, 'Material Transfer for Manufacture')
 
 	def test_wo_completion_with_pl_bom(self):
-		from erpnext.manufacturing.doctype.bom.test_bom import create_process_loss_bom_items
-		from erpnext.manufacturing.doctype.bom.test_bom import create_bom_with_process_loss_item
+		from erpnext.manufacturing.doctype.bom.test_bom import (
+			create_bom_with_process_loss_item,
+			create_process_loss_bom_items,
+		)
 
 		qty = 4
 		scrap_qty = 0.25 # bom item qty = 1, consider as 25% of FG
diff --git a/erpnext/manufacturing/doctype/work_order/work_order.py b/erpnext/manufacturing/doctype/work_order/work_order.py
index 24b33d5..e282dd3 100644
--- a/erpnext/manufacturing/doctype/work_order/work_order.py
+++ b/erpnext/manufacturing/doctype/work_order/work_order.py
@@ -1,25 +1,43 @@
 # Copyright (c) 2021, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 
-import frappe
 import json
-import math
-from frappe import _
-from frappe.utils import flt, get_datetime, getdate, date_diff, cint, nowdate, get_link_to_form, time_diff_in_hours
-from frappe.model.document import Document
-from erpnext.manufacturing.doctype.bom.bom import validate_bom_no, get_bom_items_as_dict, get_bom_item_rate
+
+import frappe
 from dateutil.relativedelta import relativedelta
-from erpnext.stock.doctype.item.item import validate_end_of_life, get_item_defaults
-from erpnext.manufacturing.doctype.workstation.workstation import WorkstationHolidayError
-from erpnext.projects.doctype.timesheet.timesheet import OverlapError
-from erpnext.manufacturing.doctype.manufacturing_settings.manufacturing_settings import get_mins_between_operations
-from erpnext.stock.stock_balance import get_planned_qty, update_bin_qty
-from frappe.utils.csvutils import getlink
-from erpnext.stock.utils import get_bin, validate_warehouse_company, get_latest_stock_qty
-from erpnext.utilities.transaction_base import validate_uom_is_integer
+from frappe import _
+from frappe.model.document import Document
 from frappe.model.mapper import get_mapped_doc
+from frappe.utils import (
+	cint,
+	date_diff,
+	flt,
+	get_datetime,
+	get_link_to_form,
+	getdate,
+	nowdate,
+	time_diff_in_hours,
+)
+
+from erpnext.manufacturing.doctype.bom.bom import (
+	get_bom_item_rate,
+	get_bom_items_as_dict,
+	validate_bom_no,
+)
+from erpnext.manufacturing.doctype.manufacturing_settings.manufacturing_settings import (
+	get_mins_between_operations,
+)
 from erpnext.stock.doctype.batch.batch import make_batch
-from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos, get_auto_serial_nos, auto_make_serial_nos
+from erpnext.stock.doctype.item.item import get_item_defaults, validate_end_of_life
+from erpnext.stock.doctype.serial_no.serial_no import (
+	auto_make_serial_nos,
+	get_auto_serial_nos,
+	get_serial_nos,
+)
+from erpnext.stock.stock_balance import get_planned_qty, update_bin_qty
+from erpnext.stock.utils import get_bin, get_latest_stock_qty, validate_warehouse_company
+from erpnext.utilities.transaction_base import validate_uom_is_integer
+
 
 class OverProductionError(frappe.ValidationError): pass
 class CapacityError(frappe.ValidationError): pass
diff --git a/erpnext/manufacturing/doctype/work_order/work_order_dashboard.py b/erpnext/manufacturing/doctype/work_order/work_order_dashboard.py
index 403d46d..f0fc43f 100644
--- a/erpnext/manufacturing/doctype/work_order/work_order_dashboard.py
+++ b/erpnext/manufacturing/doctype/work_order/work_order_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'work_order',
diff --git a/erpnext/manufacturing/doctype/work_order_item/work_order_item.py b/erpnext/manufacturing/doctype/work_order_item/work_order_item.py
index 9aa53b5..3f2664b 100644
--- a/erpnext/manufacturing/doctype/work_order_item/work_order_item.py
+++ b/erpnext/manufacturing/doctype/work_order_item/work_order_item.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 
+
 class WorkOrderItem(Document):
 	pass
 
diff --git a/erpnext/manufacturing/doctype/work_order_operation/work_order_operation.py b/erpnext/manufacturing/doctype/work_order_operation/work_order_operation.py
index 3c20d8e..d25c9f2 100644
--- a/erpnext/manufacturing/doctype/work_order_operation/work_order_operation.py
+++ b/erpnext/manufacturing/doctype/work_order_operation/work_order_operation.py
@@ -2,8 +2,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class WorkOrderOperation(Document):
 	pass
diff --git a/erpnext/manufacturing/doctype/workstation/test_workstation.py b/erpnext/manufacturing/doctype/workstation/test_workstation.py
index 9b73aca..6c6ab77 100644
--- a/erpnext/manufacturing/doctype/workstation/test_workstation.py
+++ b/erpnext/manufacturing/doctype/workstation/test_workstation.py
@@ -1,14 +1,20 @@
 # Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors and Contributors
 # See license.txt
 from __future__ import unicode_literals
-from erpnext.manufacturing.doctype.operation.test_operation import make_operation
+
+import unittest
 
 import frappe
-import unittest
-from erpnext.manufacturing.doctype.workstation.workstation import check_if_within_operating_hours, NotInWorkingHoursError, WorkstationHolidayError
-from erpnext.manufacturing.doctype.routing.test_routing import setup_bom, create_routing
 from frappe.test_runner import make_test_records
 
+from erpnext.manufacturing.doctype.operation.test_operation import make_operation
+from erpnext.manufacturing.doctype.routing.test_routing import create_routing, setup_bom
+from erpnext.manufacturing.doctype.workstation.workstation import (
+	NotInWorkingHoursError,
+	WorkstationHolidayError,
+	check_if_within_operating_hours,
+)
+
 test_dependencies = ["Warehouse"]
 test_records = frappe.get_test_records('Workstation')
 make_test_records('Workstation')
diff --git a/erpnext/manufacturing/doctype/workstation/workstation.py b/erpnext/manufacturing/doctype/workstation/workstation.py
index f4483f7..6daf950 100644
--- a/erpnext/manufacturing/doctype/workstation/workstation.py
+++ b/erpnext/manufacturing/doctype/workstation/workstation.py
@@ -2,13 +2,23 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from erpnext.support.doctype.issue.issue import get_holidays
-from frappe.utils import (flt, cint, getdate, formatdate,
-	comma_and, time_diff_in_seconds, to_timedelta, add_days)
 from frappe.model.document import Document
-from dateutil.parser import parse
+from frappe.utils import (
+	add_days,
+	cint,
+	comma_and,
+	flt,
+	formatdate,
+	getdate,
+	time_diff_in_seconds,
+	to_timedelta,
+)
+
+from erpnext.support.doctype.issue.issue import get_holidays
+
 
 class WorkstationHolidayError(frappe.ValidationError): pass
 class NotInWorkingHoursError(frappe.ValidationError): pass
diff --git a/erpnext/manufacturing/doctype/workstation/workstation_dashboard.py b/erpnext/manufacturing/doctype/workstation/workstation_dashboard.py
index 3ddbe73..3e4b38a 100644
--- a/erpnext/manufacturing/doctype/workstation/workstation_dashboard.py
+++ b/erpnext/manufacturing/doctype/workstation/workstation_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'workstation',
diff --git a/erpnext/manufacturing/doctype/workstation_working_hour/workstation_working_hour.py b/erpnext/manufacturing/doctype/workstation_working_hour/workstation_working_hour.py
index 215df4c..719d83d 100644
--- a/erpnext/manufacturing/doctype/workstation_working_hour/workstation_working_hour.py
+++ b/erpnext/manufacturing/doctype/workstation_working_hour/workstation_working_hour.py
@@ -2,8 +2,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class WorkstationWorkingHour(Document):
 	pass
diff --git a/erpnext/manufacturing/notification/material_request_receipt_notification/material_request_receipt_notification.py b/erpnext/manufacturing/notification/material_request_receipt_notification/material_request_receipt_notification.py
index 2334f8b..f57de91 100644
--- a/erpnext/manufacturing/notification/material_request_receipt_notification/material_request_receipt_notification.py
+++ b/erpnext/manufacturing/notification/material_request_receipt_notification/material_request_receipt_notification.py
@@ -1,6 +1,5 @@
 from __future__ import unicode_literals
 
-import frappe
 
 def get_context(context):
 	# do your magic here
diff --git a/erpnext/manufacturing/report/bom_explorer/bom_explorer.py b/erpnext/manufacturing/report/bom_explorer/bom_explorer.py
index 858b554..c122fa9 100644
--- a/erpnext/manufacturing/report/bom_explorer/bom_explorer.py
+++ b/erpnext/manufacturing/report/bom_explorer/bom_explorer.py
@@ -2,8 +2,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from pprint import pprint
+
 
 def execute(filters=None):
 	data = []
diff --git a/erpnext/manufacturing/report/bom_operations_time/bom_operations_time.py b/erpnext/manufacturing/report/bom_operations_time/bom_operations_time.py
index 8778d9b..3c2d215 100644
--- a/erpnext/manufacturing/report/bom_operations_time/bom_operations_time.py
+++ b/erpnext/manufacturing/report/bom_operations_time/bom_operations_time.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 def execute(filters=None):
 	data = get_data(filters)
 	columns = get_columns(filters)
diff --git a/erpnext/manufacturing/report/bom_stock_calculated/bom_stock_calculated.py b/erpnext/manufacturing/report/bom_stock_calculated/bom_stock_calculated.py
index d7ebfd6..c085990 100644
--- a/erpnext/manufacturing/report/bom_stock_calculated/bom_stock_calculated.py
+++ b/erpnext/manufacturing/report/bom_stock_calculated/bom_stock_calculated.py
@@ -2,10 +2,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils.data import comma_and
 
+
 def execute(filters=None):
 	# if not filters: filters = {}
 	columns = get_columns()
diff --git a/erpnext/manufacturing/report/bom_stock_report/bom_stock_report.py b/erpnext/manufacturing/report/bom_stock_report/bom_stock_report.py
index ed8b939..b8ef68d 100644
--- a/erpnext/manufacturing/report/bom_stock_report/bom_stock_report.py
+++ b/erpnext/manufacturing/report/bom_stock_report/bom_stock_report.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 def execute(filters=None):
 	if not filters: filters = {}
 
diff --git a/erpnext/manufacturing/report/bom_variance_report/bom_variance_report.py b/erpnext/manufacturing/report/bom_variance_report/bom_variance_report.py
index dc424b7..bbf5037 100644
--- a/erpnext/manufacturing/report/bom_variance_report/bom_variance_report.py
+++ b/erpnext/manufacturing/report/bom_variance_report/bom_variance_report.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 def execute(filters=None):
 	columns, data = [], []
 	columns = get_columns(filters)
diff --git a/erpnext/manufacturing/report/cost_of_poor_quality_report/cost_of_poor_quality_report.py b/erpnext/manufacturing/report/cost_of_poor_quality_report/cost_of_poor_quality_report.py
index b4db98c..0dcad44 100644
--- a/erpnext/manufacturing/report/cost_of_poor_quality_report/cost_of_poor_quality_report.py
+++ b/erpnext/manufacturing/report/cost_of_poor_quality_report/cost_of_poor_quality_report.py
@@ -2,10 +2,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import flt
 
+
 def execute(filters=None):
 	columns, data = [], []
 
diff --git a/erpnext/manufacturing/report/downtime_analysis/downtime_analysis.py b/erpnext/manufacturing/report/downtime_analysis/downtime_analysis.py
index 74c794b..a1c6fd1 100644
--- a/erpnext/manufacturing/report/downtime_analysis/downtime_analysis.py
+++ b/erpnext/manufacturing/report/downtime_analysis/downtime_analysis.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import flt
 from frappe import _
+from frappe.utils import flt
+
 
 def execute(filters=None):
 	columns, data = [], []
diff --git a/erpnext/manufacturing/report/exponential_smoothing_forecasting/exponential_smoothing_forecasting.py b/erpnext/manufacturing/report/exponential_smoothing_forecasting/exponential_smoothing_forecasting.py
index 9a6c764..f014e7f 100644
--- a/erpnext/manufacturing/report/exponential_smoothing_forecasting/exponential_smoothing_forecasting.py
+++ b/erpnext/manufacturing/report/exponential_smoothing_forecasting/exponential_smoothing_forecasting.py
@@ -2,12 +2,16 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
+
+import frappe
 from frappe import _
-from frappe.utils import flt, nowdate, add_years, cint, getdate
+from frappe.utils import add_years, cint, flt, getdate
+
+import erpnext
 from erpnext.accounts.report.financial_statements import get_period_list
 from erpnext.stock.doctype.warehouse.warehouse import get_child_warehouses
 
+
 def execute(filters=None):
 	return ForecastingReport(filters).execute_report()
 
diff --git a/erpnext/manufacturing/report/job_card_summary/job_card_summary.py b/erpnext/manufacturing/report/job_card_summary/job_card_summary.py
index a893905..a7aec31 100644
--- a/erpnext/manufacturing/report/job_card_summary/job_card_summary.py
+++ b/erpnext/manufacturing/report/job_card_summary/job_card_summary.py
@@ -2,10 +2,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import getdate, flt
-from erpnext.stock.report.stock_analytics.stock_analytics import (get_period_date_ranges, get_period)
+from frappe.utils import getdate
+
+from erpnext.stock.report.stock_analytics.stock_analytics import get_period, get_period_date_ranges
+
 
 def execute(filters=None):
 	columns, data = [], []
diff --git a/erpnext/manufacturing/report/production_analytics/production_analytics.py b/erpnext/manufacturing/report/production_analytics/production_analytics.py
index 42c9d97..9e0978a 100644
--- a/erpnext/manufacturing/report/production_analytics/production_analytics.py
+++ b/erpnext/manufacturing/report/production_analytics/production_analytics.py
@@ -2,10 +2,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _, scrub
 from frappe.utils import getdate
-from erpnext.stock.report.stock_analytics.stock_analytics import (get_period_date_ranges, get_period)
+
+from erpnext.stock.report.stock_analytics.stock_analytics import get_period, get_period_date_ranges
+
 
 def execute(filters=None):
 	columns = get_columns(filters)
diff --git a/erpnext/manufacturing/report/production_plan_summary/production_plan_summary.py b/erpnext/manufacturing/report/production_plan_summary/production_plan_summary.py
index 81b1791..9a4d0c4 100644
--- a/erpnext/manufacturing/report/production_plan_summary/production_plan_summary.py
+++ b/erpnext/manufacturing/report/production_plan_summary/production_plan_summary.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.utils import flt
 
+
 def execute(filters=None):
 	columns, data = [], []
 	data = get_data(filters)
diff --git a/erpnext/manufacturing/report/production_planning_report/production_planning_report.py b/erpnext/manufacturing/report/production_planning_report/production_planning_report.py
index 806d268..e27270a 100644
--- a/erpnext/manufacturing/report/production_planning_report/production_planning_report.py
+++ b/erpnext/manufacturing/report/production_planning_report/production_planning_report.py
@@ -2,8 +2,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
+
 from erpnext.stock.doctype.warehouse.warehouse import get_child_warehouses
 
 # and bom_no is not null and bom_no !=''
diff --git a/erpnext/manufacturing/report/quality_inspection_summary/quality_inspection_summary.py b/erpnext/manufacturing/report/quality_inspection_summary/quality_inspection_summary.py
index a12ac7f..54df208 100644
--- a/erpnext/manufacturing/report/quality_inspection_summary/quality_inspection_summary.py
+++ b/erpnext/manufacturing/report/quality_inspection_summary/quality_inspection_summary.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 def execute(filters=None):
 	columns, data = [], []
 	data = get_data(filters)
diff --git a/erpnext/manufacturing/report/work_order_stock_report/work_order_stock_report.py b/erpnext/manufacturing/report/work_order_stock_report/work_order_stock_report.py
index 599a738..5b2e262 100644
--- a/erpnext/manufacturing/report/work_order_stock_report/work_order_stock_report.py
+++ b/erpnext/manufacturing/report/work_order_stock_report/work_order_stock_report.py
@@ -2,8 +2,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-from frappe.utils import cint
+
 import frappe
+from frappe.utils import cint
+
 
 def execute(filters=None):
 	wo_list = get_work_orders()
diff --git a/erpnext/manufacturing/report/work_order_summary/work_order_summary.py b/erpnext/manufacturing/report/work_order_summary/work_order_summary.py
index d0766f9..b65af33 100644
--- a/erpnext/manufacturing/report/work_order_summary/work_order_summary.py
+++ b/erpnext/manufacturing/report/work_order_summary/work_order_summary.py
@@ -2,10 +2,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import date_diff, today, getdate, flt
 from frappe import _
-from erpnext.stock.report.stock_analytics.stock_analytics import (get_period_date_ranges, get_period)
+from frappe.utils import date_diff, flt, getdate, today
+
+from erpnext.stock.report.stock_analytics.stock_analytics import get_period, get_period_date_ranges
+
 
 def execute(filters=None):
 	columns, data = [], []
diff --git a/erpnext/non_profit/doctype/certification_application/certification_application.py b/erpnext/non_profit/doctype/certification_application/certification_application.py
index d4fc76b..ff400c8 100644
--- a/erpnext/non_profit/doctype/certification_application/certification_application.py
+++ b/erpnext/non_profit/doctype/certification_application/certification_application.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class CertificationApplication(Document):
 	pass
diff --git a/erpnext/non_profit/doctype/certification_application/test_certification_application.py b/erpnext/non_profit/doctype/certification_application/test_certification_application.py
index 30cb8c0..5e1cbf8 100644
--- a/erpnext/non_profit/doctype/certification_application/test_certification_application.py
+++ b/erpnext/non_profit/doctype/certification_application/test_certification_application.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestCertificationApplication(unittest.TestCase):
 	pass
diff --git a/erpnext/non_profit/doctype/certified_consultant/certified_consultant.py b/erpnext/non_profit/doctype/certified_consultant/certified_consultant.py
index 3bc6ed7..0cbc208 100644
--- a/erpnext/non_profit/doctype/certified_consultant/certified_consultant.py
+++ b/erpnext/non_profit/doctype/certified_consultant/certified_consultant.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class CertifiedConsultant(Document):
 	pass
diff --git a/erpnext/non_profit/doctype/certified_consultant/test_certified_consultant.py b/erpnext/non_profit/doctype/certified_consultant/test_certified_consultant.py
index 19b485d..29a7388 100644
--- a/erpnext/non_profit/doctype/certified_consultant/test_certified_consultant.py
+++ b/erpnext/non_profit/doctype/certified_consultant/test_certified_consultant.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestCertifiedConsultant(unittest.TestCase):
 	pass
diff --git a/erpnext/non_profit/doctype/chapter/chapter.py b/erpnext/non_profit/doctype/chapter/chapter.py
index e9554b1..c5c9569 100644
--- a/erpnext/non_profit/doctype/chapter/chapter.py
+++ b/erpnext/non_profit/doctype/chapter/chapter.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.website.website_generator import WebsiteGenerator
 
+
 class Chapter(WebsiteGenerator):
 	_website = frappe._dict(
 		condition_field = "published",
diff --git a/erpnext/non_profit/doctype/chapter/test_chapter.py b/erpnext/non_profit/doctype/chapter/test_chapter.py
index d757a1f..04cdc27 100644
--- a/erpnext/non_profit/doctype/chapter/test_chapter.py
+++ b/erpnext/non_profit/doctype/chapter/test_chapter.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestChapter(unittest.TestCase):
 	pass
diff --git a/erpnext/non_profit/doctype/chapter_member/chapter_member.py b/erpnext/non_profit/doctype/chapter_member/chapter_member.py
index a1b25f2..1638294 100644
--- a/erpnext/non_profit/doctype/chapter_member/chapter_member.py
+++ b/erpnext/non_profit/doctype/chapter_member/chapter_member.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class ChapterMember(Document):
 	pass
diff --git a/erpnext/non_profit/doctype/donation/donation.py b/erpnext/non_profit/doctype/donation/donation.py
index 9aa7e13..e4e2b4e 100644
--- a/erpnext/non_profit/doctype/donation/donation.py
+++ b/erpnext/non_profit/doctype/donation/donation.py
@@ -3,15 +3,19 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
+import json
+
 import frappe
 import six
-import json
-from frappe.model.document import Document
 from frappe import _
-from frappe.utils import getdate, flt, get_link_to_form
 from frappe.email import sendmail_to_system_managers
+from frappe.model.document import Document
+from frappe.utils import flt, get_link_to_form, getdate
+
 from erpnext.non_profit.doctype.membership.membership import verify_signature
 
+
 class Donation(Document):
 	def validate(self):
 		if not self.donor or not frappe.db.exists('Donor', self.donor):
diff --git a/erpnext/non_profit/doctype/donation/donation_dashboard.py b/erpnext/non_profit/doctype/donation/donation_dashboard.py
index 3da8942..4a16077 100644
--- a/erpnext/non_profit/doctype/donation/donation_dashboard.py
+++ b/erpnext/non_profit/doctype/donation/donation_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'donation',
diff --git a/erpnext/non_profit/doctype/donation/test_donation.py b/erpnext/non_profit/doctype/donation/test_donation.py
index b206f54..6b9ade9 100644
--- a/erpnext/non_profit/doctype/donation/test_donation.py
+++ b/erpnext/non_profit/doctype/donation/test_donation.py
@@ -3,10 +3,13 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
+import frappe
+
 from erpnext.non_profit.doctype.donation.donation import create_donation
 
+
 class TestDonation(unittest.TestCase):
 	def setUp(self):
 		create_donor_type()
diff --git a/erpnext/non_profit/doctype/donor/donor.py b/erpnext/non_profit/doctype/donor/donor.py
index ab6a197..a46163a 100644
--- a/erpnext/non_profit/doctype/donor/donor.py
+++ b/erpnext/non_profit/doctype/donor/donor.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-from frappe.model.document import Document
+
 from frappe.contacts.address_and_contact import load_address_and_contact
+from frappe.model.document import Document
+
 
 class Donor(Document):
 	def onload(self):
diff --git a/erpnext/non_profit/doctype/donor/test_donor.py b/erpnext/non_profit/doctype/donor/test_donor.py
index 3b6724e..5ce0199 100644
--- a/erpnext/non_profit/doctype/donor/test_donor.py
+++ b/erpnext/non_profit/doctype/donor/test_donor.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestDonor(unittest.TestCase):
 	pass
diff --git a/erpnext/non_profit/doctype/donor_type/donor_type.py b/erpnext/non_profit/doctype/donor_type/donor_type.py
index e9262ac..4d34725 100644
--- a/erpnext/non_profit/doctype/donor_type/donor_type.py
+++ b/erpnext/non_profit/doctype/donor_type/donor_type.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class DonorType(Document):
 	pass
diff --git a/erpnext/non_profit/doctype/donor_type/test_donor_type.py b/erpnext/non_profit/doctype/donor_type/test_donor_type.py
index e793913..7857ec5 100644
--- a/erpnext/non_profit/doctype/donor_type/test_donor_type.py
+++ b/erpnext/non_profit/doctype/donor_type/test_donor_type.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-
 import unittest
 
+
 class TestDonorType(unittest.TestCase):
 	pass
diff --git a/erpnext/non_profit/doctype/grant_application/grant_application.py b/erpnext/non_profit/doctype/grant_application/grant_application.py
index b810fd0..92a6256 100644
--- a/erpnext/non_profit/doctype/grant_application/grant_application.py
+++ b/erpnext/non_profit/doctype/grant_application/grant_application.py
@@ -3,11 +3,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.website.website_generator import WebsiteGenerator
 from frappe.contacts.address_and_contact import load_address_and_contact
 from frappe.utils import get_url
+from frappe.website.website_generator import WebsiteGenerator
+
 
 class GrantApplication(WebsiteGenerator):
 	_website = frappe._dict(
diff --git a/erpnext/non_profit/doctype/grant_application/test_grant_application.py b/erpnext/non_profit/doctype/grant_application/test_grant_application.py
index da16acf..d158091 100644
--- a/erpnext/non_profit/doctype/grant_application/test_grant_application.py
+++ b/erpnext/non_profit/doctype/grant_application/test_grant_application.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestGrantApplication(unittest.TestCase):
 	pass
diff --git a/erpnext/non_profit/doctype/member/member.py b/erpnext/non_profit/doctype/member/member.py
index 67828d6..f7e7f10 100644
--- a/erpnext/non_profit/doctype/member/member.py
+++ b/erpnext/non_profit/doctype/member/member.py
@@ -3,14 +3,17 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.model.document import Document
 from frappe.contacts.address_and_contact import load_address_and_contact
-from frappe.utils import cint, get_link_to_form
 from frappe.integrations.utils import get_payment_gateway_controller
+from frappe.model.document import Document
+from frappe.utils import cint, get_link_to_form
+
 from erpnext.non_profit.doctype.membership_type.membership_type import get_membership_type
 
+
 class Member(Document):
 	def onload(self):
 		"""Load address and contacts in `__onload`"""
diff --git a/erpnext/non_profit/doctype/member/member_dashboard.py b/erpnext/non_profit/doctype/member/member_dashboard.py
index 743db25..ff929a5 100644
--- a/erpnext/non_profit/doctype/member/member_dashboard.py
+++ b/erpnext/non_profit/doctype/member/member_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'heatmap': True,
diff --git a/erpnext/non_profit/doctype/member/test_member.py b/erpnext/non_profit/doctype/member/test_member.py
index 748a500..38ad87f 100644
--- a/erpnext/non_profit/doctype/member/test_member.py
+++ b/erpnext/non_profit/doctype/member/test_member.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestMember(unittest.TestCase):
 	pass
diff --git a/erpnext/non_profit/doctype/membership/membership.py b/erpnext/non_profit/doctype/membership/membership.py
index 9eb973b..b65dc8e 100644
--- a/erpnext/non_profit/doctype/membership/membership.py
+++ b/erpnext/non_profit/doctype/membership/membership.py
@@ -3,17 +3,20 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import json
+from datetime import datetime
+
 import frappe
 import six
-import os
-from datetime import datetime
-from frappe.model.document import Document
-from frappe.email import sendmail_to_system_managers
-from frappe.utils import add_days, add_years, nowdate, getdate, add_months, get_link_to_form
-from erpnext.non_profit.doctype.member.member import create_member
 from frappe import _
+from frappe.email import sendmail_to_system_managers
+from frappe.model.document import Document
+from frappe.utils import add_days, add_months, add_years, get_link_to_form, getdate, nowdate
+
 import erpnext
+from erpnext.non_profit.doctype.member.member import create_member
+
 
 class Membership(Document):
 	def validate(self):
diff --git a/erpnext/non_profit/doctype/membership/test_membership.py b/erpnext/non_profit/doctype/membership/test_membership.py
index 5ad2088..5f52cda 100644
--- a/erpnext/non_profit/doctype/membership/test_membership.py
+++ b/erpnext/non_profit/doctype/membership/test_membership.py
@@ -2,12 +2,16 @@
 # Copyright (c) 2017, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
+
 import frappe
+from frappe.utils import add_months, nowdate
+
 import erpnext
 from erpnext.non_profit.doctype.member.member import create_member
 from erpnext.non_profit.doctype.membership.membership import update_halted_razorpay_subscription
-from frappe.utils import nowdate, add_months
+
 
 class TestMembership(unittest.TestCase):
 	def setUp(self):
diff --git a/erpnext/non_profit/doctype/membership_type/membership_type.py b/erpnext/non_profit/doctype/membership_type/membership_type.py
index c712b99..1b847d9 100644
--- a/erpnext/non_profit/doctype/membership_type/membership_type.py
+++ b/erpnext/non_profit/doctype/membership_type/membership_type.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-from frappe.model.document import Document
+
 import frappe
 from frappe import _
+from frappe.model.document import Document
+
 
 class MembershipType(Document):
 	def validate(self):
diff --git a/erpnext/non_profit/doctype/membership_type/test_membership_type.py b/erpnext/non_profit/doctype/membership_type/test_membership_type.py
index d2c9bee..2503ba1 100644
--- a/erpnext/non_profit/doctype/membership_type/test_membership_type.py
+++ b/erpnext/non_profit/doctype/membership_type/test_membership_type.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestMembershipType(unittest.TestCase):
 	pass
diff --git a/erpnext/non_profit/doctype/non_profit_settings/non_profit_settings.py b/erpnext/non_profit/doctype/non_profit_settings/non_profit_settings.py
index 50c9351..cb365cb 100644
--- a/erpnext/non_profit/doctype/non_profit_settings/non_profit_settings.py
+++ b/erpnext/non_profit/doctype/non_profit_settings/non_profit_settings.py
@@ -3,11 +3,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.integrations.utils import get_payment_gateway_controller
 from frappe.model.document import Document
 
+
 class NonProfitSettings(Document):
 	@frappe.whitelist()
 	def generate_webhook_secret(self, field="membership_webhook_secret"):
diff --git a/erpnext/non_profit/doctype/non_profit_settings/test_non_profit_settings.py b/erpnext/non_profit/doctype/non_profit_settings/test_non_profit_settings.py
index 3f0ede3..a0a5403 100644
--- a/erpnext/non_profit/doctype/non_profit_settings/test_non_profit_settings.py
+++ b/erpnext/non_profit/doctype/non_profit_settings/test_non_profit_settings.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestNonProfitSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/non_profit/doctype/volunteer/test_volunteer.py b/erpnext/non_profit/doctype/volunteer/test_volunteer.py
index 6f3bee0..346eac5 100644
--- a/erpnext/non_profit/doctype/volunteer/test_volunteer.py
+++ b/erpnext/non_profit/doctype/volunteer/test_volunteer.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestVolunteer(unittest.TestCase):
 	pass
diff --git a/erpnext/non_profit/doctype/volunteer/volunteer.py b/erpnext/non_profit/doctype/volunteer/volunteer.py
index 699868a..6c9232b 100644
--- a/erpnext/non_profit/doctype/volunteer/volunteer.py
+++ b/erpnext/non_profit/doctype/volunteer/volunteer.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-from frappe.model.document import Document
+
 from frappe.contacts.address_and_contact import load_address_and_contact
+from frappe.model.document import Document
+
 
 class Volunteer(Document):
 	def onload(self):
diff --git a/erpnext/non_profit/doctype/volunteer_skill/volunteer_skill.py b/erpnext/non_profit/doctype/volunteer_skill/volunteer_skill.py
index dc9f823..3422ec2 100644
--- a/erpnext/non_profit/doctype/volunteer_skill/volunteer_skill.py
+++ b/erpnext/non_profit/doctype/volunteer_skill/volunteer_skill.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class VolunteerSkill(Document):
 	pass
diff --git a/erpnext/non_profit/doctype/volunteer_type/test_volunteer_type.py b/erpnext/non_profit/doctype/volunteer_type/test_volunteer_type.py
index 78f65c7..2c64d21 100644
--- a/erpnext/non_profit/doctype/volunteer_type/test_volunteer_type.py
+++ b/erpnext/non_profit/doctype/volunteer_type/test_volunteer_type.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestVolunteerType(unittest.TestCase):
 	pass
diff --git a/erpnext/non_profit/doctype/volunteer_type/volunteer_type.py b/erpnext/non_profit/doctype/volunteer_type/volunteer_type.py
index 9776402..116f5d8 100644
--- a/erpnext/non_profit/doctype/volunteer_type/volunteer_type.py
+++ b/erpnext/non_profit/doctype/volunteer_type/volunteer_type.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class VolunteerType(Document):
 	pass
diff --git a/erpnext/non_profit/report/expiring_memberships/expiring_memberships.py b/erpnext/non_profit/report/expiring_memberships/expiring_memberships.py
index 122db45..2167b65 100644
--- a/erpnext/non_profit/report/expiring_memberships/expiring_memberships.py
+++ b/erpnext/non_profit/report/expiring_memberships/expiring_memberships.py
@@ -2,8 +2,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe import _,msgprint
+from frappe import _
+
 
 def execute(filters=None):
 	columns = get_columns(filters)
diff --git a/erpnext/non_profit/web_form/certification_application/certification_application.py b/erpnext/non_profit/web_form/certification_application/certification_application.py
index 2334f8b..f57de91 100644
--- a/erpnext/non_profit/web_form/certification_application/certification_application.py
+++ b/erpnext/non_profit/web_form/certification_application/certification_application.py
@@ -1,6 +1,5 @@
 from __future__ import unicode_literals
 
-import frappe
 
 def get_context(context):
 	# do your magic here
diff --git a/erpnext/non_profit/web_form/certification_application_usd/certification_application_usd.py b/erpnext/non_profit/web_form/certification_application_usd/certification_application_usd.py
index 2334f8b..f57de91 100644
--- a/erpnext/non_profit/web_form/certification_application_usd/certification_application_usd.py
+++ b/erpnext/non_profit/web_form/certification_application_usd/certification_application_usd.py
@@ -1,6 +1,5 @@
 from __future__ import unicode_literals
 
-import frappe
 
 def get_context(context):
 	# do your magic here
diff --git a/erpnext/non_profit/web_form/grant_application/grant_application.py b/erpnext/non_profit/web_form/grant_application/grant_application.py
index 186722a..dab0e9f 100644
--- a/erpnext/non_profit/web_form/grant_application/grant_application.py
+++ b/erpnext/non_profit/web_form/grant_application/grant_application.py
@@ -1,5 +1,6 @@
 from __future__ import unicode_literals
 
+
 def get_context(context):
 	context.no_cache = True
 	context.parents = [dict(label='View All ',
diff --git a/erpnext/patches/v10_0/add_default_cash_flow_mappers.py b/erpnext/patches/v10_0/add_default_cash_flow_mappers.py
index d607b2f..5c28597 100644
--- a/erpnext/patches/v10_0/add_default_cash_flow_mappers.py
+++ b/erpnext/patches/v10_0/add_default_cash_flow_mappers.py
@@ -4,6 +4,7 @@
 from __future__ import unicode_literals
 
 import frappe
+
 from erpnext.setup.install import create_default_cash_flow_mapper_templates
 
 
diff --git a/erpnext/patches/v10_0/delete_hub_documents.py b/erpnext/patches/v10_0/delete_hub_documents.py
index f6a1499..16c7abf 100644
--- a/erpnext/patches/v10_0/delete_hub_documents.py
+++ b/erpnext/patches/v10_0/delete_hub_documents.py
@@ -1,7 +1,7 @@
 from __future__ import unicode_literals
 
 import frappe
-from frappe.model.utils.rename_field import rename_field
+
 
 def execute():
 	for dt, dn in (("Page", "Hub"), ("DocType", "Hub Settings"), ("DocType", "Hub Category")):
diff --git a/erpnext/patches/v10_0/fichier_des_ecritures_comptables_for_france.py b/erpnext/patches/v10_0/fichier_des_ecritures_comptables_for_france.py
index 0315ae7..a3e4957 100644
--- a/erpnext/patches/v10_0/fichier_des_ecritures_comptables_for_france.py
+++ b/erpnext/patches/v10_0/fichier_des_ecritures_comptables_for_france.py
@@ -2,9 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
+
 from erpnext.setup.doctype.company.company import install_country_fixtures
 
+
 def execute():
 	frappe.reload_doc('regional', 'report', 'fichier_des_ecritures_comptables_[fec]')
 	for d in frappe.get_all('Company', filters = {'country': 'France'}):
diff --git a/erpnext/patches/v10_0/migrate_daily_work_summary_settings_to_daily_work_summary_group.py b/erpnext/patches/v10_0/migrate_daily_work_summary_settings_to_daily_work_summary_group.py
index daa258e..a3c61a5 100644
--- a/erpnext/patches/v10_0/migrate_daily_work_summary_settings_to_daily_work_summary_group.py
+++ b/erpnext/patches/v10_0/migrate_daily_work_summary_settings_to_daily_work_summary_group.py
@@ -2,6 +2,7 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
 
diff --git a/erpnext/patches/v10_0/rename_offer_letter_to_job_offer.py b/erpnext/patches/v10_0/rename_offer_letter_to_job_offer.py
index f832936..4fc419e 100644
--- a/erpnext/patches/v10_0/rename_offer_letter_to_job_offer.py
+++ b/erpnext/patches/v10_0/rename_offer_letter_to_job_offer.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	if frappe.db.table_exists("Offer Letter") and not frappe.db.table_exists("Job Offer"):
 		frappe.rename_doc("DocType", "Offer Letter", "Job Offer", force=True)
diff --git a/erpnext/patches/v10_0/rename_price_to_rate_in_pricing_rule.py b/erpnext/patches/v10_0/rename_price_to_rate_in_pricing_rule.py
index a9dd310..1b8c6fb 100644
--- a/erpnext/patches/v10_0/rename_price_to_rate_in_pricing_rule.py
+++ b/erpnext/patches/v10_0/rename_price_to_rate_in_pricing_rule.py
@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.utils.rename_field import rename_field
 
+
 def execute():
 	frappe.reload_doc("accounts", "doctype", "pricing_rule")
 
diff --git a/erpnext/patches/v10_0/set_currency_in_pricing_rule.py b/erpnext/patches/v10_0/set_currency_in_pricing_rule.py
index c413931..2a3f1c0 100644
--- a/erpnext/patches/v10_0/set_currency_in_pricing_rule.py
+++ b/erpnext/patches/v10_0/set_currency_in_pricing_rule.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doctype("Pricing Rule")
 
diff --git a/erpnext/patches/v10_0/update_translatable_fields.py b/erpnext/patches/v10_0/update_translatable_fields.py
index 9d6bda7..2c55a052 100644
--- a/erpnext/patches/v10_0/update_translatable_fields.py
+++ b/erpnext/patches/v10_0/update_translatable_fields.py
@@ -4,6 +4,7 @@
 
 import frappe
 
+
 def execute():
 	'''
 	Enable translatable in these fields
diff --git a/erpnext/patches/v10_1/transfer_subscription_to_auto_repeat.py b/erpnext/patches/v10_1/transfer_subscription_to_auto_repeat.py
index 3d1a88e..2d5b0c5 100644
--- a/erpnext/patches/v10_1/transfer_subscription_to_auto_repeat.py
+++ b/erpnext/patches/v10_1/transfer_subscription_to_auto_repeat.py
@@ -1,4 +1,5 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.utils.rename_field import rename_field
 
diff --git a/erpnext/patches/v11_0/add_default_dispatch_notification_template.py b/erpnext/patches/v11_0/add_default_dispatch_notification_template.py
index f4c1895..197b3b7 100644
--- a/erpnext/patches/v11_0/add_default_dispatch_notification_template.py
+++ b/erpnext/patches/v11_0/add_default_dispatch_notification_template.py
@@ -1,4 +1,5 @@
 from __future__ import unicode_literals
+
 import os
 
 import frappe
diff --git a/erpnext/patches/v11_0/add_default_email_template_for_leave.py b/erpnext/patches/v11_0/add_default_email_template_for_leave.py
index 0f1e496..f8538df 100644
--- a/erpnext/patches/v11_0/add_default_email_template_for_leave.py
+++ b/erpnext/patches/v11_0/add_default_email_template_for_leave.py
@@ -1,7 +1,11 @@
 from __future__ import unicode_literals
-import frappe, os
+
+import os
+
+import frappe
 from frappe import _
 
+
 def execute():
 	frappe.reload_doc("email", "doctype", "email_template")
 
diff --git a/erpnext/patches/v11_0/add_expense_claim_default_account.py b/erpnext/patches/v11_0/add_expense_claim_default_account.py
index a613bd8..74b93ef 100644
--- a/erpnext/patches/v11_0/add_expense_claim_default_account.py
+++ b/erpnext/patches/v11_0/add_expense_claim_default_account.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc("setup", "doctype", "company")
 
diff --git a/erpnext/patches/v11_0/add_healthcare_service_unit_tree_root.py b/erpnext/patches/v11_0/add_healthcare_service_unit_tree_root.py
index a45f39d..9bb91dc 100644
--- a/erpnext/patches/v11_0/add_healthcare_service_unit_tree_root.py
+++ b/erpnext/patches/v11_0/add_healthcare_service_unit_tree_root.py
@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 def execute():
 	""" assign lft and rgt appropriately """
 	if "Healthcare" not in frappe.get_active_domains():
diff --git a/erpnext/patches/v11_0/add_index_on_nestedset_doctypes.py b/erpnext/patches/v11_0/add_index_on_nestedset_doctypes.py
index 0243dfb..08ad855 100644
--- a/erpnext/patches/v11_0/add_index_on_nestedset_doctypes.py
+++ b/erpnext/patches/v11_0/add_index_on_nestedset_doctypes.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc("assets", "doctype", "Location")
 	for dt in ("Account", "Cost Center", "File", "Employee", "Location", "Task", "Customer Group", "Sales Person", "Territory"):
diff --git a/erpnext/patches/v11_0/add_item_group_defaults.py b/erpnext/patches/v11_0/add_item_group_defaults.py
index 2a15ad1..6849b27 100644
--- a/erpnext/patches/v11_0/add_item_group_defaults.py
+++ b/erpnext/patches/v11_0/add_item_group_defaults.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	'''
 
diff --git a/erpnext/patches/v11_0/add_market_segments.py b/erpnext/patches/v11_0/add_market_segments.py
index a8841ef..e7cc7d1 100644
--- a/erpnext/patches/v11_0/add_market_segments.py
+++ b/erpnext/patches/v11_0/add_market_segments.py
@@ -1,9 +1,10 @@
 from __future__ import unicode_literals
 
 import frappe
-from frappe import _
+
 from erpnext.setup.setup_wizard.operations.install_fixtures import add_market_segments
 
+
 def execute():
 	frappe.reload_doc('crm', 'doctype', 'market_segment')
 
diff --git a/erpnext/patches/v11_0/add_permissions_in_gst_settings.py b/erpnext/patches/v11_0/add_permissions_in_gst_settings.py
index 83b2a4c..9df1b58 100644
--- a/erpnext/patches/v11_0/add_permissions_in_gst_settings.py
+++ b/erpnext/patches/v11_0/add_permissions_in_gst_settings.py
@@ -1,6 +1,8 @@
 import frappe
+
 from erpnext.regional.india.setup import add_permissions
 
+
 def execute():
 	company = frappe.get_all('Company', filters = {'country': 'India'})
 	if not company:
diff --git a/erpnext/patches/v11_0/add_sales_stages.py b/erpnext/patches/v11_0/add_sales_stages.py
index d06c688..23e4874 100644
--- a/erpnext/patches/v11_0/add_sales_stages.py
+++ b/erpnext/patches/v11_0/add_sales_stages.py
@@ -1,8 +1,10 @@
 from __future__ import unicode_literals
+
 import frappe
-from frappe import _
+
 from erpnext.setup.setup_wizard.operations.install_fixtures import add_sale_stages
 
+
 def execute():
 	frappe.reload_doc('crm', 'doctype', 'sales_stage')
 
diff --git a/erpnext/patches/v11_0/check_buying_selling_in_currency_exchange.py b/erpnext/patches/v11_0/check_buying_selling_in_currency_exchange.py
index 0a1a360..5eaf212 100644
--- a/erpnext/patches/v11_0/check_buying_selling_in_currency_exchange.py
+++ b/erpnext/patches/v11_0/check_buying_selling_in_currency_exchange.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc('setup', 'doctype', 'currency_exchange')
 	frappe.db.sql("""update `tabCurrency Exchange` set for_buying = 1, for_selling = 1""")
diff --git a/erpnext/patches/v11_0/create_default_success_action.py b/erpnext/patches/v11_0/create_default_success_action.py
index 31feff2..4a59837 100644
--- a/erpnext/patches/v11_0/create_default_success_action.py
+++ b/erpnext/patches/v11_0/create_default_success_action.py
@@ -1,7 +1,10 @@
 from __future__ import unicode_literals
+
 import frappe
+
 from erpnext.setup.install import create_default_success_action
 
+
 def execute():
 	frappe.reload_doc("core", "doctype", "success_action")
 	create_default_success_action()
diff --git a/erpnext/patches/v11_0/create_department_records_for_each_company.py b/erpnext/patches/v11_0/create_department_records_for_each_company.py
index e9b5950..7799a65 100644
--- a/erpnext/patches/v11_0/create_department_records_for_each_company.py
+++ b/erpnext/patches/v11_0/create_department_records_for_each_company.py
@@ -1,8 +1,10 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils.nestedset import rebuild_tree
 
+
 def execute():
 	frappe.local.lang = frappe.db.get_default("lang") or 'en'
 
diff --git a/erpnext/patches/v11_0/create_salary_structure_assignments.py b/erpnext/patches/v11_0/create_salary_structure_assignments.py
index d3ea7a3..c3cc9b6 100644
--- a/erpnext/patches/v11_0/create_salary_structure_assignments.py
+++ b/erpnext/patches/v11_0/create_salary_structure_assignments.py
@@ -2,10 +2,16 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from datetime import datetime
+
+import frappe
 from frappe.utils import getdate
-from erpnext.payroll.doctype.salary_structure_assignment.salary_structure_assignment import DuplicateAssignment
+
+from erpnext.payroll.doctype.salary_structure_assignment.salary_structure_assignment import (
+	DuplicateAssignment,
+)
+
 
 def execute():
 	frappe.reload_doc('Payroll', 'doctype', 'Salary Structure')
diff --git a/erpnext/patches/v11_0/drop_column_max_days_allowed.py b/erpnext/patches/v11_0/drop_column_max_days_allowed.py
index 029f75a..e45d01c 100644
--- a/erpnext/patches/v11_0/drop_column_max_days_allowed.py
+++ b/erpnext/patches/v11_0/drop_column_max_days_allowed.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	if frappe.db.exists("DocType", "Leave Type"):
 		if 'max_days_allowed' in frappe.db.get_table_columns("Leave Type"):
diff --git a/erpnext/patches/v11_0/ewaybill_fields_gst_india.py b/erpnext/patches/v11_0/ewaybill_fields_gst_india.py
index 4247c78..a59291c 100644
--- a/erpnext/patches/v11_0/ewaybill_fields_gst_india.py
+++ b/erpnext/patches/v11_0/ewaybill_fields_gst_india.py
@@ -1,7 +1,10 @@
 from __future__ import unicode_literals
+
 import frappe
+
 from erpnext.regional.india.setup import make_custom_fields
 
+
 def execute():
     company = frappe.get_all('Company', filters = {'country': 'India'})
     if not company:
diff --git a/erpnext/patches/v11_0/hr_ux_cleanups.py b/erpnext/patches/v11_0/hr_ux_cleanups.py
index 8d18796..b09f4a7 100644
--- a/erpnext/patches/v11_0/hr_ux_cleanups.py
+++ b/erpnext/patches/v11_0/hr_ux_cleanups.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doctype('Employee')
 	frappe.db.sql('update tabEmployee set first_name = employee_name')
diff --git a/erpnext/patches/v11_0/inter_state_field_for_gst.py b/erpnext/patches/v11_0/inter_state_field_for_gst.py
index 730eebc..fa83af0 100644
--- a/erpnext/patches/v11_0/inter_state_field_for_gst.py
+++ b/erpnext/patches/v11_0/inter_state_field_for_gst.py
@@ -1,6 +1,9 @@
 from __future__ import unicode_literals
+
 import frappe
-from erpnext.regional.india.setup  import make_custom_fields
+
+from erpnext.regional.india.setup import make_custom_fields
+
 
 def execute():
 	company = frappe.get_all('Company', filters = {'country': 'India'})
diff --git a/erpnext/patches/v11_0/make_asset_finance_book_against_old_entries.py b/erpnext/patches/v11_0/make_asset_finance_book_against_old_entries.py
index dfcf5ab..1d3f8c1 100644
--- a/erpnext/patches/v11_0/make_asset_finance_book_against_old_entries.py
+++ b/erpnext/patches/v11_0/make_asset_finance_book_against_old_entries.py
@@ -2,8 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils.nestedset import rebuild_tree
+
 
 def execute():
 	frappe.reload_doc('assets', 'doctype', 'asset_finance_book')
diff --git a/erpnext/patches/v11_0/make_italian_localization_fields.py b/erpnext/patches/v11_0/make_italian_localization_fields.py
index 29d25c9..994df72 100644
--- a/erpnext/patches/v11_0/make_italian_localization_fields.py
+++ b/erpnext/patches/v11_0/make_italian_localization_fields.py
@@ -2,10 +2,13 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-from erpnext.regional.italy.setup import make_custom_fields, setup_report
-from erpnext.regional.italy import state_codes
+
 import frappe
 
+from erpnext.regional.italy import state_codes
+from erpnext.regional.italy.setup import make_custom_fields, setup_report
+
+
 def execute():
 	company = frappe.get_all('Company', filters = {'country': 'Italy'})
 	if not company:
diff --git a/erpnext/patches/v11_0/make_job_card.py b/erpnext/patches/v11_0/make_job_card.py
index 9c41c0b..e361d5a 100644
--- a/erpnext/patches/v11_0/make_job_card.py
+++ b/erpnext/patches/v11_0/make_job_card.py
@@ -2,9 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
+
 from erpnext.manufacturing.doctype.work_order.work_order import create_job_card
 
+
 def execute():
 	frappe.reload_doc('manufacturing', 'doctype', 'work_order')
 	frappe.reload_doc('manufacturing', 'doctype', 'work_order_item')
diff --git a/erpnext/patches/v11_0/make_location_from_warehouse.py b/erpnext/patches/v11_0/make_location_from_warehouse.py
index 8c92b51..e855b3e 100644
--- a/erpnext/patches/v11_0/make_location_from_warehouse.py
+++ b/erpnext/patches/v11_0/make_location_from_warehouse.py
@@ -2,9 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.utils.nestedset import rebuild_tree
 
+
 def execute():
 	if not frappe.db.get_value('Asset', {'docstatus': ('<', 2) }, 'name'): return
 	frappe.reload_doc('assets', 'doctype', 'location')
diff --git a/erpnext/patches/v11_0/make_quality_inspection_template.py b/erpnext/patches/v11_0/make_quality_inspection_template.py
index 9720af4..1c3d34e 100644
--- a/erpnext/patches/v11_0/make_quality_inspection_template.py
+++ b/erpnext/patches/v11_0/make_quality_inspection_template.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc('stock', 'doctype', 'quality_inspection_template')
 	frappe.reload_doc('stock', 'doctype', 'item')
diff --git a/erpnext/patches/v11_0/move_item_defaults_to_child_table_for_multicompany.py b/erpnext/patches/v11_0/move_item_defaults_to_child_table_for_multicompany.py
index 83617f7..42fdf13 100644
--- a/erpnext/patches/v11_0/move_item_defaults_to_child_table_for_multicompany.py
+++ b/erpnext/patches/v11_0/move_item_defaults_to_child_table_for_multicompany.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	'''
 
diff --git a/erpnext/patches/v11_0/move_leave_approvers_from_employee.py b/erpnext/patches/v11_0/move_leave_approvers_from_employee.py
index ef703d0..accfa5e 100644
--- a/erpnext/patches/v11_0/move_leave_approvers_from_employee.py
+++ b/erpnext/patches/v11_0/move_leave_approvers_from_employee.py
@@ -1,8 +1,9 @@
 from __future__ import unicode_literals
+
 import frappe
-from frappe import _
 from frappe.model.utils.rename_field import rename_field
 
+
 def execute():
 	frappe.reload_doc("hr", "doctype", "department_approver")
 	frappe.reload_doc("hr", "doctype", "employee")
diff --git a/erpnext/patches/v11_0/rebuild_tree_for_company.py b/erpnext/patches/v11_0/rebuild_tree_for_company.py
index 4cb74c7..6caca47 100644
--- a/erpnext/patches/v11_0/rebuild_tree_for_company.py
+++ b/erpnext/patches/v11_0/rebuild_tree_for_company.py
@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe.utils.nestedset import rebuild_tree
 
+
 def execute():
 	frappe.reload_doc("setup", "doctype", "company")
 	rebuild_tree('Company', 'parent_company')
diff --git a/erpnext/patches/v11_0/redesign_healthcare_billing_work_flow.py b/erpnext/patches/v11_0/redesign_healthcare_billing_work_flow.py
index 7c8a822..b1ed0f5 100644
--- a/erpnext/patches/v11_0/redesign_healthcare_billing_work_flow.py
+++ b/erpnext/patches/v11_0/redesign_healthcare_billing_work_flow.py
@@ -1,8 +1,10 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe.custom.doctype.custom_field.custom_field import create_custom_fields
+from frappe.modules import get_doctype_module, scrub
+
 from erpnext.domains.healthcare import data
-from frappe.modules import scrub, get_doctype_module
 
 sales_invoice_referenced_doc = {
 	"Patient Appointment": "sales_invoice",
diff --git a/erpnext/patches/v11_0/remove_barcodes_field_from_copy_fields_to_variants.py b/erpnext/patches/v11_0/remove_barcodes_field_from_copy_fields_to_variants.py
index 97ddd41..caf74f5 100644
--- a/erpnext/patches/v11_0/remove_barcodes_field_from_copy_fields_to_variants.py
+++ b/erpnext/patches/v11_0/remove_barcodes_field_from_copy_fields_to_variants.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 	'''Remove barcodes field from "Copy Fields to Variants" table because barcodes must be unique'''
 
diff --git a/erpnext/patches/v11_0/remove_modules_setup_page.py b/erpnext/patches/v11_0/remove_modules_setup_page.py
index bb0bdf5..eab3237 100644
--- a/erpnext/patches/v11_0/remove_modules_setup_page.py
+++ b/erpnext/patches/v11_0/remove_modules_setup_page.py
@@ -2,7 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.delete_doc("Page", "modules_setup")
diff --git a/erpnext/patches/v11_0/rename_additional_salary_component_additional_salary.py b/erpnext/patches/v11_0/rename_additional_salary_component_additional_salary.py
index 8eb7016..5b2c286 100644
--- a/erpnext/patches/v11_0/rename_additional_salary_component_additional_salary.py
+++ b/erpnext/patches/v11_0/rename_additional_salary_component_additional_salary.py
@@ -1,4 +1,5 @@
 from __future__ import unicode_literals
+
 import frappe
 
 # this patch should have been included with this PR https://github.com/frappe/erpnext/pull/14302
diff --git a/erpnext/patches/v11_0/rename_asset_adjustment_doctype.py b/erpnext/patches/v11_0/rename_asset_adjustment_doctype.py
index 923b230..707dff7 100644
--- a/erpnext/patches/v11_0/rename_asset_adjustment_doctype.py
+++ b/erpnext/patches/v11_0/rename_asset_adjustment_doctype.py
@@ -2,6 +2,7 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
 
diff --git a/erpnext/patches/v11_0/rename_bom_wo_fields.py b/erpnext/patches/v11_0/rename_bom_wo_fields.py
index 0e6036b..4ad6ea9 100644
--- a/erpnext/patches/v11_0/rename_bom_wo_fields.py
+++ b/erpnext/patches/v11_0/rename_bom_wo_fields.py
@@ -2,9 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.utils.rename_field import rename_field
 
+
 def execute():
     # updating column value to handle field change from Data to Currency
     changed_field = "base_scrap_material_cost"
diff --git a/erpnext/patches/v11_0/rename_duplicate_item_code_values.py b/erpnext/patches/v11_0/rename_duplicate_item_code_values.py
index 00ab562..61f3856 100644
--- a/erpnext/patches/v11_0/rename_duplicate_item_code_values.py
+++ b/erpnext/patches/v11_0/rename_duplicate_item_code_values.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 	items = []
 	items = frappe.db.sql("""select item_code from `tabItem` group by item_code having count(*) > 1""", as_dict=True)
diff --git a/erpnext/patches/v11_0/rename_field_max_days_allowed.py b/erpnext/patches/v11_0/rename_field_max_days_allowed.py
index 4e99fac..48f73fb 100644
--- a/erpnext/patches/v11_0/rename_field_max_days_allowed.py
+++ b/erpnext/patches/v11_0/rename_field_max_days_allowed.py
@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.utils.rename_field import rename_field
 
+
 def execute():
 	frappe.db.sql("""
 		UPDATE `tabLeave Type`
diff --git a/erpnext/patches/v11_0/rename_health_insurance.py b/erpnext/patches/v11_0/rename_health_insurance.py
index 06fc615..a4f53b0 100644
--- a/erpnext/patches/v11_0/rename_health_insurance.py
+++ b/erpnext/patches/v11_0/rename_health_insurance.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.rename_doc('DocType', 'Health Insurance', 'Employee Health Insurance', force=True)
 	frappe.reload_doc('hr', 'doctype', 'employee_health_insurance')
diff --git a/erpnext/patches/v11_0/rename_healthcare_doctype_and_fields.py b/erpnext/patches/v11_0/rename_healthcare_doctype_and_fields.py
index 9705681..7a8c52f 100644
--- a/erpnext/patches/v11_0/rename_healthcare_doctype_and_fields.py
+++ b/erpnext/patches/v11_0/rename_healthcare_doctype_and_fields.py
@@ -1,7 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.utils.rename_field import rename_field
-from frappe.modules import scrub, get_doctype_module
+from frappe.modules import get_doctype_module, scrub
 
 field_rename_map = {
 	"Patient Encounter": [
diff --git a/erpnext/patches/v11_0/rename_healthcare_fields.py b/erpnext/patches/v11_0/rename_healthcare_fields.py
index 9aeb433..5c96367 100644
--- a/erpnext/patches/v11_0/rename_healthcare_fields.py
+++ b/erpnext/patches/v11_0/rename_healthcare_fields.py
@@ -1,7 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.utils.rename_field import rename_field
-from frappe.modules import scrub, get_doctype_module
+from frappe.modules import get_doctype_module, scrub
 
 lab_test_name = ["test_name", "lab_test_name"]
 lab_test_code = ["test_code", "lab_test_code"]
diff --git a/erpnext/patches/v11_0/rename_members_with_naming_series.py b/erpnext/patches/v11_0/rename_members_with_naming_series.py
index 84f5518..a3d7970 100644
--- a/erpnext/patches/v11_0/rename_members_with_naming_series.py
+++ b/erpnext/patches/v11_0/rename_members_with_naming_series.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc("non_profit", "doctype", "member")
 	old_named_members = frappe.get_all("Member", filters = {"name": ("not like", "MEM-%")})
diff --git a/erpnext/patches/v11_0/rename_overproduction_percent_field.py b/erpnext/patches/v11_0/rename_overproduction_percent_field.py
index fbf925d..c7124af 100644
--- a/erpnext/patches/v11_0/rename_overproduction_percent_field.py
+++ b/erpnext/patches/v11_0/rename_overproduction_percent_field.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-from frappe.model.utils.rename_field import rename_field
+
 import frappe
+from frappe.model.utils.rename_field import rename_field
+
 
 def execute():
 	frappe.reload_doc('manufacturing', 'doctype', 'manufacturing_settings')
diff --git a/erpnext/patches/v11_0/rename_production_order_to_work_order.py b/erpnext/patches/v11_0/rename_production_order_to_work_order.py
index 2f620f4..995f1af 100644
--- a/erpnext/patches/v11_0/rename_production_order_to_work_order.py
+++ b/erpnext/patches/v11_0/rename_production_order_to_work_order.py
@@ -2,9 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.utils.rename_field import rename_field
 
+
 def execute():
 	frappe.rename_doc('DocType', 'Production Order', 'Work Order', force=True)
 	frappe.reload_doc('manufacturing', 'doctype', 'work_order')
diff --git a/erpnext/patches/v11_0/rename_supplier_type_to_supplier_group.py b/erpnext/patches/v11_0/rename_supplier_type_to_supplier_group.py
index c4b3838..2e53fb8 100644
--- a/erpnext/patches/v11_0/rename_supplier_type_to_supplier_group.py
+++ b/erpnext/patches/v11_0/rename_supplier_type_to_supplier_group.py
@@ -1,9 +1,11 @@
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.utils.rename_field import rename_field
 from frappe import _
+from frappe.model.utils.rename_field import rename_field
 from frappe.utils.nestedset import rebuild_tree
 
+
 def execute():
 	if frappe.db.table_exists("Supplier Group"):
 		frappe.reload_doc('setup', 'doctype', 'supplier_group')
diff --git a/erpnext/patches/v11_0/renamed_from_to_fields_in_project.py b/erpnext/patches/v11_0/renamed_from_to_fields_in_project.py
index d5ca4cc..894aaee 100644
--- a/erpnext/patches/v11_0/renamed_from_to_fields_in_project.py
+++ b/erpnext/patches/v11_0/renamed_from_to_fields_in_project.py
@@ -2,9 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.utils.rename_field import rename_field
 
+
 def execute():
     frappe.reload_doc('projects', 'doctype', 'project')
 
diff --git a/erpnext/patches/v11_0/reset_publish_in_hub_for_all_items.py b/erpnext/patches/v11_0/reset_publish_in_hub_for_all_items.py
index 56e95e0..a664baf 100644
--- a/erpnext/patches/v11_0/reset_publish_in_hub_for_all_items.py
+++ b/erpnext/patches/v11_0/reset_publish_in_hub_for_all_items.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc('stock', 'doctype', 'item')
 	frappe.db.sql("""update `tabItem` set publish_in_hub = 0""")
diff --git a/erpnext/patches/v11_0/set_default_email_template_in_hr.py b/erpnext/patches/v11_0/set_default_email_template_in_hr.py
index 4622376..ff75424 100644
--- a/erpnext/patches/v11_0/set_default_email_template_in_hr.py
+++ b/erpnext/patches/v11_0/set_default_email_template_in_hr.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
-from frappe import _
+
 import frappe
+from frappe import _
+
 
 def execute():
 	hr_settings = frappe.get_single("HR Settings")
diff --git a/erpnext/patches/v11_0/set_department_for_doctypes.py b/erpnext/patches/v11_0/set_department_for_doctypes.py
index 175d2a1..c969965 100644
--- a/erpnext/patches/v11_0/set_department_for_doctypes.py
+++ b/erpnext/patches/v11_0/set_department_for_doctypes.py
@@ -1,4 +1,5 @@
 from __future__ import unicode_literals
+
 import frappe
 
 # Set department value based on employee value
diff --git a/erpnext/patches/v11_0/set_missing_gst_hsn_code.py b/erpnext/patches/v11_0/set_missing_gst_hsn_code.py
index 8f8a545..7a0a989 100644
--- a/erpnext/patches/v11_0/set_missing_gst_hsn_code.py
+++ b/erpnext/patches/v11_0/set_missing_gst_hsn_code.py
@@ -1,7 +1,10 @@
 from __future__ import unicode_literals
+
 import frappe
+
 from erpnext.controllers.taxes_and_totals import get_itemised_tax_breakup_html
 
+
 def execute():
 	company = frappe.db.sql_list("select name from tabCompany where country = 'India'")
 	if not company:
diff --git a/erpnext/patches/v11_0/set_salary_component_properties.py b/erpnext/patches/v11_0/set_salary_component_properties.py
index d8ce31f..b70dc35 100644
--- a/erpnext/patches/v11_0/set_salary_component_properties.py
+++ b/erpnext/patches/v11_0/set_salary_component_properties.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc('Payroll', 'doctype', 'salary_detail')
 	frappe.reload_doc('Payroll', 'doctype', 'salary_component')
diff --git a/erpnext/patches/v11_0/set_update_field_and_value_in_workflow_state.py b/erpnext/patches/v11_0/set_update_field_and_value_in_workflow_state.py
index d0cabb3..da4d4bd 100644
--- a/erpnext/patches/v11_0/set_update_field_and_value_in_workflow_state.py
+++ b/erpnext/patches/v11_0/set_update_field_and_value_in_workflow_state.py
@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.workflow import get_workflow_name
 
+
 def execute():
 	for doctype in ['Expense Claim', 'Leave Application']:
 
diff --git a/erpnext/patches/v11_0/set_user_permissions_for_department.py b/erpnext/patches/v11_0/set_user_permissions_for_department.py
index 2f90f14..7840d5e 100644
--- a/erpnext/patches/v11_0/set_user_permissions_for_department.py
+++ b/erpnext/patches/v11_0/set_user_permissions_for_department.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
     user_permissions = frappe.db.sql("""select name, for_value from `tabUser Permission`
         where allow='Department'""", as_dict=1)
diff --git a/erpnext/patches/v11_0/skip_user_permission_check_for_department.py b/erpnext/patches/v11_0/skip_user_permission_check_for_department.py
index 4e72917..66d1b6b 100644
--- a/erpnext/patches/v11_0/skip_user_permission_check_for_department.py
+++ b/erpnext/patches/v11_0/skip_user_permission_check_for_department.py
@@ -1,4 +1,5 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe.desk.form.linked_with import get_linked_doctypes
 
diff --git a/erpnext/patches/v11_0/uom_conversion_data.py b/erpnext/patches/v11_0/uom_conversion_data.py
index 91470b3..a408d86 100644
--- a/erpnext/patches/v11_0/uom_conversion_data.py
+++ b/erpnext/patches/v11_0/uom_conversion_data.py
@@ -1,5 +1,7 @@
 from __future__ import unicode_literals
-import frappe, json
+
+import frappe
+
 
 def execute():
 	from erpnext.setup.setup_wizard.operations.install_fixtures import add_uom_data
diff --git a/erpnext/patches/v11_0/update_account_type_in_party_type.py b/erpnext/patches/v11_0/update_account_type_in_party_type.py
index dabaeff..e51874f 100644
--- a/erpnext/patches/v11_0/update_account_type_in_party_type.py
+++ b/erpnext/patches/v11_0/update_account_type_in_party_type.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc('setup', 'doctype', 'party_type')
 	party_types = {'Customer': 'Receivable', 'Supplier': 'Payable',
diff --git a/erpnext/patches/v11_0/update_allow_transfer_for_manufacture.py b/erpnext/patches/v11_0/update_allow_transfer_for_manufacture.py
index 799e91a..bfcfc9f 100644
--- a/erpnext/patches/v11_0/update_allow_transfer_for_manufacture.py
+++ b/erpnext/patches/v11_0/update_allow_transfer_for_manufacture.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc('stock', 'doctype', 'item')
 	frappe.db.sql(""" update `tabItem` set include_item_in_manufacturing = 1
diff --git a/erpnext/patches/v11_0/update_backflush_subcontract_rm_based_on_bom.py b/erpnext/patches/v11_0/update_backflush_subcontract_rm_based_on_bom.py
index 37a616c..c3b18bd 100644
--- a/erpnext/patches/v11_0/update_backflush_subcontract_rm_based_on_bom.py
+++ b/erpnext/patches/v11_0/update_backflush_subcontract_rm_based_on_bom.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc('buying', 'doctype', 'buying_settings')
 	frappe.db.set_value('Buying Settings', None, 'backflush_raw_materials_of_subcontract_based_on', 'BOM')
diff --git a/erpnext/patches/v11_0/update_brand_in_item_price.py b/erpnext/patches/v11_0/update_brand_in_item_price.py
index 977d84f..a489378 100644
--- a/erpnext/patches/v11_0/update_brand_in_item_price.py
+++ b/erpnext/patches/v11_0/update_brand_in_item_price.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc('stock', 'doctype', 'item_price')
 
diff --git a/erpnext/patches/v11_0/update_delivery_trip_status.py b/erpnext/patches/v11_0/update_delivery_trip_status.py
index 42f017e..da25958 100755
--- a/erpnext/patches/v11_0/update_delivery_trip_status.py
+++ b/erpnext/patches/v11_0/update_delivery_trip_status.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc('setup', 'doctype', 'global_defaults', force=True)
 	frappe.reload_doc('stock', 'doctype', 'delivery_trip')
diff --git a/erpnext/patches/v11_0/update_department_lft_rgt.py b/erpnext/patches/v11_0/update_department_lft_rgt.py
index 2b38203..f7ecf6e 100644
--- a/erpnext/patches/v11_0/update_department_lft_rgt.py
+++ b/erpnext/patches/v11_0/update_department_lft_rgt.py
@@ -4,6 +4,7 @@
 from frappe import _
 from frappe.utils.nestedset import rebuild_tree
 
+
 def execute():
 	""" assign lft and rgt appropriately """
 	frappe.reload_doc("hr", "doctype", "department")
diff --git a/erpnext/patches/v11_0/update_hub_url.py b/erpnext/patches/v11_0/update_hub_url.py
index 6c6ca3c..c89b9b5 100644
--- a/erpnext/patches/v11_0/update_hub_url.py
+++ b/erpnext/patches/v11_0/update_hub_url.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc('hub_node', 'doctype', 'Marketplace Settings')
 	frappe.db.set_value('Marketplace Settings', 'Marketplace Settings', 'marketplace_url', 'https://hubmarket.org')
diff --git a/erpnext/patches/v11_0/update_sales_partner_type.py b/erpnext/patches/v11_0/update_sales_partner_type.py
index b393926..1369805 100644
--- a/erpnext/patches/v11_0/update_sales_partner_type.py
+++ b/erpnext/patches/v11_0/update_sales_partner_type.py
@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 def execute():
 	from erpnext.setup.setup_wizard.operations.install_fixtures import default_sales_partner_type
 
diff --git a/erpnext/patches/v11_0/update_total_qty_field.py b/erpnext/patches/v11_0/update_total_qty_field.py
index 9407256..e79a5f9 100644
--- a/erpnext/patches/v11_0/update_total_qty_field.py
+++ b/erpnext/patches/v11_0/update_total_qty_field.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc('buying', 'doctype', 'purchase_order')
 	frappe.reload_doc('buying', 'doctype', 'supplier_quotation')
diff --git a/erpnext/patches/v11_1/delete_bom_browser.py b/erpnext/patches/v11_1/delete_bom_browser.py
index 2892674..aad3df2 100644
--- a/erpnext/patches/v11_1/delete_bom_browser.py
+++ b/erpnext/patches/v11_1/delete_bom_browser.py
@@ -2,7 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
     frappe.delete_doc_if_exists('Page', 'bom-browser')
diff --git a/erpnext/patches/v11_1/delete_scheduling_tool.py b/erpnext/patches/v11_1/delete_scheduling_tool.py
index b7ad28a..56d0dbf 100644
--- a/erpnext/patches/v11_1/delete_scheduling_tool.py
+++ b/erpnext/patches/v11_1/delete_scheduling_tool.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	if frappe.db.exists("DocType", "Scheduling Tool"):
 		frappe.delete_doc("DocType", "Scheduling Tool", ignore_permissions=True)
diff --git a/erpnext/patches/v11_1/make_job_card_time_logs.py b/erpnext/patches/v11_1/make_job_card_time_logs.py
index b706e5c..db0c345 100644
--- a/erpnext/patches/v11_1/make_job_card_time_logs.py
+++ b/erpnext/patches/v11_1/make_job_card_time_logs.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
     frappe.reload_doc('manufacturing', 'doctype', 'job_card_time_log')
 
diff --git a/erpnext/patches/v11_1/move_customer_lead_to_dynamic_column.py b/erpnext/patches/v11_1/move_customer_lead_to_dynamic_column.py
index fc3ec74..9ea6cd8 100644
--- a/erpnext/patches/v11_1/move_customer_lead_to_dynamic_column.py
+++ b/erpnext/patches/v11_1/move_customer_lead_to_dynamic_column.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doctype("Quotation")
 	frappe.db.sql(""" UPDATE `tabQuotation` set party_name = lead WHERE quotation_to = 'Lead' """)
diff --git a/erpnext/patches/v11_1/rename_depends_on_lwp.py b/erpnext/patches/v11_1/rename_depends_on_lwp.py
index 4c4b14f..95a8225 100644
--- a/erpnext/patches/v11_1/rename_depends_on_lwp.py
+++ b/erpnext/patches/v11_1/rename_depends_on_lwp.py
@@ -2,10 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import scrub
 from frappe.model.utils.rename_field import rename_field
 
+
 def execute():
 	for doctype in ("Salary Component", "Salary Detail"):
 		if "depends_on_lwp" in frappe.db.get_table_columns(doctype):
diff --git a/erpnext/patches/v11_1/renamed_delayed_item_report.py b/erpnext/patches/v11_1/renamed_delayed_item_report.py
index 8e8725c..2128563 100644
--- a/erpnext/patches/v11_1/renamed_delayed_item_report.py
+++ b/erpnext/patches/v11_1/renamed_delayed_item_report.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
     for report in ["Delayed Order Item Summary", "Delayed Order Summary"]:
         if frappe.db.exists("Report", report):
diff --git a/erpnext/patches/v11_1/set_default_action_for_quality_inspection.py b/erpnext/patches/v11_1/set_default_action_for_quality_inspection.py
index b13239f..4325490 100644
--- a/erpnext/patches/v11_1/set_default_action_for_quality_inspection.py
+++ b/erpnext/patches/v11_1/set_default_action_for_quality_inspection.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
     stock_settings = frappe.get_doc('Stock Settings')
     if stock_settings.default_warehouse and not frappe.db.exists("Warehouse", stock_settings.default_warehouse):
diff --git a/erpnext/patches/v11_1/set_missing_opportunity_from.py b/erpnext/patches/v11_1/set_missing_opportunity_from.py
index cb444b2..6569200 100644
--- a/erpnext/patches/v11_1/set_missing_opportunity_from.py
+++ b/erpnext/patches/v11_1/set_missing_opportunity_from.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 
 	frappe.reload_doctype("Opportunity")
diff --git a/erpnext/patches/v11_1/set_missing_title_for_quotation.py b/erpnext/patches/v11_1/set_missing_title_for_quotation.py
index e2ef343..93d9f0e 100644
--- a/erpnext/patches/v11_1/set_missing_title_for_quotation.py
+++ b/erpnext/patches/v11_1/set_missing_title_for_quotation.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 	frappe.reload_doctype("Quotation")
 	# update customer_name from Customer document if quotation_to is set to Customer
diff --git a/erpnext/patches/v11_1/set_salary_details_submittable.py b/erpnext/patches/v11_1/set_salary_details_submittable.py
index 6d847ec..4a4cf30 100644
--- a/erpnext/patches/v11_1/set_salary_details_submittable.py
+++ b/erpnext/patches/v11_1/set_salary_details_submittable.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.db.sql("""
 		update `tabSalary Structure` ss, `tabSalary Detail` sd
diff --git a/erpnext/patches/v11_1/set_status_for_material_request_type_manufacture.py b/erpnext/patches/v11_1/set_status_for_material_request_type_manufacture.py
index ec01fbb..64db97e 100644
--- a/erpnext/patches/v11_1/set_status_for_material_request_type_manufacture.py
+++ b/erpnext/patches/v11_1/set_status_for_material_request_type_manufacture.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.db.sql("""
 		update `tabMaterial Request`
diff --git a/erpnext/patches/v11_1/set_variant_based_on.py b/erpnext/patches/v11_1/set_variant_based_on.py
index 49a9a17..b69767d 100644
--- a/erpnext/patches/v11_1/set_variant_based_on.py
+++ b/erpnext/patches/v11_1/set_variant_based_on.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.db.sql("""update tabItem set variant_based_on = 'Item Attribute'
 		where ifnull(variant_based_on, '') = ''
diff --git a/erpnext/patches/v11_1/setup_guardian_role.py b/erpnext/patches/v11_1/setup_guardian_role.py
index 6ccfed9..bb33f19 100644
--- a/erpnext/patches/v11_1/setup_guardian_role.py
+++ b/erpnext/patches/v11_1/setup_guardian_role.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	if 'Education' in frappe.get_active_domains() and not frappe.db.exists("Role", "Guardian"):
 		doc = frappe.new_doc("Role")
diff --git a/erpnext/patches/v11_1/update_bank_transaction_status.py b/erpnext/patches/v11_1/update_bank_transaction_status.py
index 354e636..33007af 100644
--- a/erpnext/patches/v11_1/update_bank_transaction_status.py
+++ b/erpnext/patches/v11_1/update_bank_transaction_status.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
     frappe.reload_doc("accounts", "doctype", "bank_transaction")
 
diff --git a/erpnext/patches/v11_1/update_default_supplier_in_item_defaults.py b/erpnext/patches/v11_1/update_default_supplier_in_item_defaults.py
index 8c360ad..22dabae 100644
--- a/erpnext/patches/v11_1/update_default_supplier_in_item_defaults.py
+++ b/erpnext/patches/v11_1/update_default_supplier_in_item_defaults.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	'''
 		default supplier was not set in the item defaults for multi company instance,
diff --git a/erpnext/patches/v11_1/woocommerce_set_creation_user.py b/erpnext/patches/v11_1/woocommerce_set_creation_user.py
index 074b904..e7218b1 100644
--- a/erpnext/patches/v11_1/woocommerce_set_creation_user.py
+++ b/erpnext/patches/v11_1/woocommerce_set_creation_user.py
@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe.utils import cint
 
+
 def execute():
 	frappe.reload_doc("erpnext_integrations", "doctype","woocommerce_settings")
 	doc = frappe.get_doc("Woocommerce Settings")
diff --git a/erpnext/patches/v12_0/add_default_buying_selling_terms_in_company.py b/erpnext/patches/v12_0/add_default_buying_selling_terms_in_company.py
index 855d21d..384a1f5 100644
--- a/erpnext/patches/v12_0/add_default_buying_selling_terms_in_company.py
+++ b/erpnext/patches/v12_0/add_default_buying_selling_terms_in_company.py
@@ -6,6 +6,7 @@
 import frappe
 from frappe.model.utils.rename_field import rename_field
 
+
 def execute():
 	frappe.reload_doc("setup", "doctype", "company")
 	if frappe.db.has_column('Company', 'default_terms'):
diff --git a/erpnext/patches/v12_0/add_document_type_field_for_italy_einvoicing.py b/erpnext/patches/v12_0/add_document_type_field_for_italy_einvoicing.py
index 6fe578d..7f39dfe 100644
--- a/erpnext/patches/v12_0/add_document_type_field_for_italy_einvoicing.py
+++ b/erpnext/patches/v12_0/add_document_type_field_for_italy_einvoicing.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
-from frappe.custom.doctype.custom_field.custom_field import create_custom_fields
+
 import frappe
+from frappe.custom.doctype.custom_field.custom_field import create_custom_fields
+
 
 def execute():
 	company = frappe.get_all('Company', filters = {'country': 'Italy'})
diff --git a/erpnext/patches/v12_0/add_eway_bill_in_delivery_note.py b/erpnext/patches/v12_0/add_eway_bill_in_delivery_note.py
index cf1ed36..973da89 100644
--- a/erpnext/patches/v12_0/add_eway_bill_in_delivery_note.py
+++ b/erpnext/patches/v12_0/add_eway_bill_in_delivery_note.py
@@ -1,6 +1,7 @@
 import frappe
 from frappe.custom.doctype.custom_field.custom_field import create_custom_field
 
+
 def execute():
     company = frappe.get_all('Company', filters = {'country': 'India'})
 
diff --git a/erpnext/patches/v12_0/add_export_type_field_in_party_master.py b/erpnext/patches/v12_0/add_export_type_field_in_party_master.py
index a0b1f87..e05c821 100644
--- a/erpnext/patches/v12_0/add_export_type_field_in_party_master.py
+++ b/erpnext/patches/v12_0/add_export_type_field_in_party_master.py
@@ -1,7 +1,10 @@
 from __future__ import unicode_literals
+
 import frappe
+
 from erpnext.regional.india.setup import make_custom_fields
 
+
 def execute():
 
 	company = frappe.get_all('Company', filters = {'country': 'India'})
diff --git a/erpnext/patches/v12_0/add_gst_category_in_delivery_note.py b/erpnext/patches/v12_0/add_gst_category_in_delivery_note.py
index c908192..30e47cb 100644
--- a/erpnext/patches/v12_0/add_gst_category_in_delivery_note.py
+++ b/erpnext/patches/v12_0/add_gst_category_in_delivery_note.py
@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe.custom.doctype.custom_field.custom_field import create_custom_fields
 
+
 def execute():
 	company = frappe.get_all('Company', filters = {'country': 'India'})
 	if not company:
diff --git a/erpnext/patches/v12_0/add_permission_in_lower_deduction.py b/erpnext/patches/v12_0/add_permission_in_lower_deduction.py
index 2e42368..1d77e5a 100644
--- a/erpnext/patches/v12_0/add_permission_in_lower_deduction.py
+++ b/erpnext/patches/v12_0/add_permission_in_lower_deduction.py
@@ -1,6 +1,7 @@
 import frappe
 from frappe.permissions import add_permission, update_permission_property
 
+
 def execute():
 	company = frappe.get_all('Company', filters = {'country': 'India'})
 	if not company:
diff --git a/erpnext/patches/v12_0/add_state_code_for_ladakh.py b/erpnext/patches/v12_0/add_state_code_for_ladakh.py
index 29a7b4b..6722b7b 100644
--- a/erpnext/patches/v12_0/add_state_code_for_ladakh.py
+++ b/erpnext/patches/v12_0/add_state_code_for_ladakh.py
@@ -1,6 +1,8 @@
 import frappe
+
 from erpnext.regional.india import states
 
+
 def execute():
 
 	company = frappe.get_all('Company', filters = {'country': 'India'})
diff --git a/erpnext/patches/v12_0/add_taxjar_integration_field.py b/erpnext/patches/v12_0/add_taxjar_integration_field.py
index 4c823e1..d10a6d7 100644
--- a/erpnext/patches/v12_0/add_taxjar_integration_field.py
+++ b/erpnext/patches/v12_0/add_taxjar_integration_field.py
@@ -1,6 +1,7 @@
 from __future__ import unicode_literals
 
 import frappe
+
 from erpnext.regional.united_states.setup import make_custom_fields
 
 
diff --git a/erpnext/patches/v12_0/add_variant_of_in_item_attribute_table.py b/erpnext/patches/v12_0/add_variant_of_in_item_attribute_table.py
index 893f7a4..c3a422c 100644
--- a/erpnext/patches/v12_0/add_variant_of_in_item_attribute_table.py
+++ b/erpnext/patches/v12_0/add_variant_of_in_item_attribute_table.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 	frappe.reload_doc('stock', 'doctype', 'item_variant_attribute')
 	frappe.db.sql('''
diff --git a/erpnext/patches/v12_0/create_accounting_dimensions_in_missing_doctypes.py b/erpnext/patches/v12_0/create_accounting_dimensions_in_missing_doctypes.py
index f171542..02fbe62 100644
--- a/erpnext/patches/v12_0/create_accounting_dimensions_in_missing_doctypes.py
+++ b/erpnext/patches/v12_0/create_accounting_dimensions_in_missing_doctypes.py
@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe.custom.doctype.custom_field.custom_field import create_custom_field
 
+
 def execute():
 
 	frappe.reload_doc('accounts', 'doctype', 'accounting_dimension')
diff --git a/erpnext/patches/v12_0/create_default_energy_point_rules.py b/erpnext/patches/v12_0/create_default_energy_point_rules.py
index 93d2576..35eaca7 100644
--- a/erpnext/patches/v12_0/create_default_energy_point_rules.py
+++ b/erpnext/patches/v12_0/create_default_energy_point_rules.py
@@ -1,6 +1,8 @@
 import frappe
+
 from erpnext.setup.install import create_default_energy_point_rules
 
+
 def execute():
 	frappe.reload_doc('social', 'doctype', 'energy_point_rule')
 	create_default_energy_point_rules()
diff --git a/erpnext/patches/v12_0/create_irs_1099_field_united_states.py b/erpnext/patches/v12_0/create_irs_1099_field_united_states.py
index 23a8f24..65265c4 100644
--- a/erpnext/patches/v12_0/create_irs_1099_field_united_states.py
+++ b/erpnext/patches/v12_0/create_irs_1099_field_united_states.py
@@ -1,7 +1,10 @@
 from __future__ import unicode_literals
+
 import frappe
+
 from erpnext.regional.united_states.setup import make_custom_fields
 
+
 def execute():
 
 	frappe.reload_doc('accounts', 'doctype', 'allowed_to_transact_with', force=True)
diff --git a/erpnext/patches/v12_0/create_itc_reversal_custom_fields.py b/erpnext/patches/v12_0/create_itc_reversal_custom_fields.py
index a6230f4..9267ebf 100644
--- a/erpnext/patches/v12_0/create_itc_reversal_custom_fields.py
+++ b/erpnext/patches/v12_0/create_itc_reversal_custom_fields.py
@@ -1,9 +1,12 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe.custom.doctype.custom_field.custom_field import create_custom_fields
 from frappe.custom.doctype.property_setter.property_setter import make_property_setter
+
 from erpnext.regional.india.utils import get_gst_accounts
 
+
 def execute():
 	company = frappe.get_all('Company', filters = {'country': 'India'}, fields=['name'])
 	if not company:
diff --git a/erpnext/patches/v12_0/create_taxable_value_field.py b/erpnext/patches/v12_0/create_taxable_value_field.py
index b9ee81d..40de8d8 100644
--- a/erpnext/patches/v12_0/create_taxable_value_field.py
+++ b/erpnext/patches/v12_0/create_taxable_value_field.py
@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe.custom.doctype.custom_field.custom_field import create_custom_fields
 
+
 def execute():
 	company = frappe.get_all('Company', filters = {'country': 'India'})
 	if not company:
diff --git a/erpnext/patches/v12_0/delete_priority_property_setter.py b/erpnext/patches/v12_0/delete_priority_property_setter.py
index 1638557..cacc463 100644
--- a/erpnext/patches/v12_0/delete_priority_property_setter.py
+++ b/erpnext/patches/v12_0/delete_priority_property_setter.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 	frappe.db.sql("""
 		DELETE FROM `tabProperty Setter`
diff --git a/erpnext/patches/v12_0/fix_percent_complete_for_projects.py b/erpnext/patches/v12_0/fix_percent_complete_for_projects.py
index 3622df6..36f51bc 100644
--- a/erpnext/patches/v12_0/fix_percent_complete_for_projects.py
+++ b/erpnext/patches/v12_0/fix_percent_complete_for_projects.py
@@ -1,6 +1,7 @@
 import frappe
 from frappe.utils import flt
 
+
 def execute():
 	for project in frappe.get_all("Project", fields=["name", "percent_complete_method"]):
 		total = frappe.db.count('Task', dict(project=project.name))
diff --git a/erpnext/patches/v12_0/fix_quotation_expired_status.py b/erpnext/patches/v12_0/fix_quotation_expired_status.py
index ac7e82d..e5c4b8c 100644
--- a/erpnext/patches/v12_0/fix_quotation_expired_status.py
+++ b/erpnext/patches/v12_0/fix_quotation_expired_status.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 	# fixes status of quotations which have status 'Expired' despite having valid sales order created
 
diff --git a/erpnext/patches/v12_0/generate_leave_ledger_entries.py b/erpnext/patches/v12_0/generate_leave_ledger_entries.py
index fe072d7..aed56d6 100644
--- a/erpnext/patches/v12_0/generate_leave_ledger_entries.py
+++ b/erpnext/patches/v12_0/generate_leave_ledger_entries.py
@@ -2,9 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.utils import getdate, today
 
+
 def execute():
 	""" Generates leave ledger entries for leave allocation/application/encashment
 		for last allocation """
diff --git a/erpnext/patches/v12_0/make_item_manufacturer.py b/erpnext/patches/v12_0/make_item_manufacturer.py
index ebc2832..cfc2472 100644
--- a/erpnext/patches/v12_0/make_item_manufacturer.py
+++ b/erpnext/patches/v12_0/make_item_manufacturer.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc("stock", "doctype", "item_manufacturer")
 
diff --git a/erpnext/patches/v12_0/move_bank_account_swift_number_to_bank.py b/erpnext/patches/v12_0/move_bank_account_swift_number_to_bank.py
index a670ade..3e9d429 100644
--- a/erpnext/patches/v12_0/move_bank_account_swift_number_to_bank.py
+++ b/erpnext/patches/v12_0/move_bank_account_swift_number_to_bank.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc('accounts', 'doctype', 'bank', force=1)
 
diff --git a/erpnext/patches/v12_0/move_credit_limit_to_customer_credit_limit.py b/erpnext/patches/v12_0/move_credit_limit_to_customer_credit_limit.py
index c9293b9..2662632 100644
--- a/erpnext/patches/v12_0/move_credit_limit_to_customer_credit_limit.py
+++ b/erpnext/patches/v12_0/move_credit_limit_to_customer_credit_limit.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	''' Move credit limit and bypass credit limit to the child table of customer credit limit '''
 	frappe.reload_doc("Selling", "doctype", "Customer Credit Limit")
diff --git a/erpnext/patches/v12_0/move_due_advance_amount_to_pending_amount.py b/erpnext/patches/v12_0/move_due_advance_amount_to_pending_amount.py
index 6013eaa..55f5cd5 100644
--- a/erpnext/patches/v12_0/move_due_advance_amount_to_pending_amount.py
+++ b/erpnext/patches/v12_0/move_due_advance_amount_to_pending_amount.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
     ''' Move from due_advance_amount to pending_amount '''
 
diff --git a/erpnext/patches/v12_0/move_item_tax_to_item_tax_template.py b/erpnext/patches/v12_0/move_item_tax_to_item_tax_template.py
index 5c3fa59..677a564 100644
--- a/erpnext/patches/v12_0/move_item_tax_to_item_tax_template.py
+++ b/erpnext/patches/v12_0/move_item_tax_to_item_tax_template.py
@@ -1,7 +1,9 @@
-import frappe
 import json
-from six import iteritems
+
+import frappe
 from frappe.model.naming import make_autoname
+from six import iteritems
+
 
 def execute():
 	if "tax_type" not in frappe.db.get_table_columns("Item Tax"):
diff --git a/erpnext/patches/v12_0/move_plaid_settings_to_doctype.py b/erpnext/patches/v12_0/move_plaid_settings_to_doctype.py
index d2bcb12..dafea28 100644
--- a/erpnext/patches/v12_0/move_plaid_settings_to_doctype.py
+++ b/erpnext/patches/v12_0/move_plaid_settings_to_doctype.py
@@ -2,6 +2,7 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
 
diff --git a/erpnext/patches/v12_0/move_target_distribution_from_parent_to_child.py b/erpnext/patches/v12_0/move_target_distribution_from_parent_to_child.py
index 97badf3..72f4df5 100644
--- a/erpnext/patches/v12_0/move_target_distribution_from_parent_to_child.py
+++ b/erpnext/patches/v12_0/move_target_distribution_from_parent_to_child.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
     frappe.reload_doc("setup", "doctype", "target_detail")
 
diff --git a/erpnext/patches/v12_0/recalculate_requested_qty_in_bin.py b/erpnext/patches/v12_0/recalculate_requested_qty_in_bin.py
index 46794be..a19e9a9 100644
--- a/erpnext/patches/v12_0/recalculate_requested_qty_in_bin.py
+++ b/erpnext/patches/v12_0/recalculate_requested_qty_in_bin.py
@@ -1,6 +1,9 @@
 from __future__ import unicode_literals
+
 import frappe
-from erpnext.stock.stock_balance import update_bin_qty, get_indented_qty
+
+from erpnext.stock.stock_balance import get_indented_qty, update_bin_qty
+
 
 def execute():
 	bin_details = frappe.db.sql("""
diff --git a/erpnext/patches/v12_0/remove_bank_remittance_custom_fields.py b/erpnext/patches/v12_0/remove_bank_remittance_custom_fields.py
index be884f9..fba4118 100644
--- a/erpnext/patches/v12_0/remove_bank_remittance_custom_fields.py
+++ b/erpnext/patches/v12_0/remove_bank_remittance_custom_fields.py
@@ -1,6 +1,7 @@
 from __future__ import unicode_literals
+
 import frappe
-from erpnext.regional.india.setup import make_custom_fields
+
 
 def execute():
 	frappe.reload_doc("accounts", "doctype", "tax_category")
diff --git a/erpnext/patches/v12_0/remove_denied_leaves_from_leave_ledger.py b/erpnext/patches/v12_0/remove_denied_leaves_from_leave_ledger.py
index 4fcffb7..f6a1984 100644
--- a/erpnext/patches/v12_0/remove_denied_leaves_from_leave_ledger.py
+++ b/erpnext/patches/v12_0/remove_denied_leaves_from_leave_ledger.py
@@ -2,8 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import getdate, today
+
 
 def execute():
 	''' Delete leave ledger entry created
diff --git a/erpnext/patches/v12_0/remove_duplicate_leave_ledger_entries.py b/erpnext/patches/v12_0/remove_duplicate_leave_ledger_entries.py
index 6b1b601..6fa1c04 100644
--- a/erpnext/patches/v12_0/remove_duplicate_leave_ledger_entries.py
+++ b/erpnext/patches/v12_0/remove_duplicate_leave_ledger_entries.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	"""Delete duplicate leave ledger entries of type allocation created."""
 	frappe.reload_doc('hr', 'doctype', 'leave_ledger_entry')
diff --git a/erpnext/patches/v12_0/remove_patient_medical_record_page.py b/erpnext/patches/v12_0/remove_patient_medical_record_page.py
index 904bfe4..bf71c48 100644
--- a/erpnext/patches/v12_0/remove_patient_medical_record_page.py
+++ b/erpnext/patches/v12_0/remove_patient_medical_record_page.py
@@ -1,7 +1,9 @@
 # Copyright (c) 2019
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.delete_doc("Page", "medical_record")
diff --git a/erpnext/patches/v12_0/rename_account_type_doctype.py b/erpnext/patches/v12_0/rename_account_type_doctype.py
index 9a08ad4..27357a8 100644
--- a/erpnext/patches/v12_0/rename_account_type_doctype.py
+++ b/erpnext/patches/v12_0/rename_account_type_doctype.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.rename_doc('DocType', 'Account Type', 'Bank Account Type', force=True)
 	frappe.rename_doc('DocType', 'Account Subtype', 'Bank Account Subtype', force=True)
diff --git a/erpnext/patches/v12_0/rename_bank_account_field_in_journal_entry_account.py b/erpnext/patches/v12_0/rename_bank_account_field_in_journal_entry_account.py
index 7489ea3..7e02fff 100644
--- a/erpnext/patches/v12_0/rename_bank_account_field_in_journal_entry_account.py
+++ b/erpnext/patches/v12_0/rename_bank_account_field_in_journal_entry_account.py
@@ -2,9 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.utils.rename_field import rename_field
 
+
 def execute():
 	''' Change the fieldname from bank_account_no to bank_account '''
 	if not frappe.get_meta("Journal Entry Account").has_field("bank_account"):
diff --git a/erpnext/patches/v12_0/rename_bank_reconciliation.py b/erpnext/patches/v12_0/rename_bank_reconciliation.py
index 2efa854..5c79ce2 100644
--- a/erpnext/patches/v12_0/rename_bank_reconciliation.py
+++ b/erpnext/patches/v12_0/rename_bank_reconciliation.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	if frappe.db.table_exists("Bank Reconciliation"):
 		frappe.rename_doc('DocType', 'Bank Reconciliation', 'Bank Clearance', force=True)
diff --git a/erpnext/patches/v12_0/rename_bank_reconciliation_fields.py b/erpnext/patches/v12_0/rename_bank_reconciliation_fields.py
index 978b1c9..629cd5b 100644
--- a/erpnext/patches/v12_0/rename_bank_reconciliation_fields.py
+++ b/erpnext/patches/v12_0/rename_bank_reconciliation_fields.py
@@ -3,6 +3,7 @@
 
 import frappe
 
+
 def _rename_single_field(**kwargs):
 	count = frappe.db.sql("SELECT COUNT(*) FROM tabSingles WHERE doctype='{doctype}' AND field='{new_name}';".format(**kwargs))[0][0] #nosec
 	if count == 0:
diff --git a/erpnext/patches/v12_0/rename_lost_reason_detail.py b/erpnext/patches/v12_0/rename_lost_reason_detail.py
index c71b91c..337302a 100644
--- a/erpnext/patches/v12_0/rename_lost_reason_detail.py
+++ b/erpnext/patches/v12_0/rename_lost_reason_detail.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
     if frappe.db.exists("DocType", "Lost Reason Detail"):
         frappe.reload_doc("crm", "doctype", "opportunity_lost_reason")
diff --git a/erpnext/patches/v12_0/rename_mws_settings_fields.py b/erpnext/patches/v12_0/rename_mws_settings_fields.py
index e08e376..d5bf38d 100644
--- a/erpnext/patches/v12_0/rename_mws_settings_fields.py
+++ b/erpnext/patches/v12_0/rename_mws_settings_fields.py
@@ -3,6 +3,7 @@
 
 import frappe
 
+
 def execute():
 	count = frappe.db.sql("SELECT COUNT(*) FROM `tabSingles` WHERE doctype='Amazon MWS Settings' AND field='enable_sync';")[0][0]
 	if count == 0:
diff --git a/erpnext/patches/v12_0/rename_pos_closing_doctype.py b/erpnext/patches/v12_0/rename_pos_closing_doctype.py
index 9d8626b..e6fb1f3 100644
--- a/erpnext/patches/v12_0/rename_pos_closing_doctype.py
+++ b/erpnext/patches/v12_0/rename_pos_closing_doctype.py
@@ -1,8 +1,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	if frappe.db.table_exists("POS Closing Voucher"):
 		if not frappe.db.exists("DocType", "POS Closing Entry"):
diff --git a/erpnext/patches/v12_0/rename_pricing_rule_child_doctypes.py b/erpnext/patches/v12_0/rename_pricing_rule_child_doctypes.py
index b9ad622..4bf3840 100644
--- a/erpnext/patches/v12_0/rename_pricing_rule_child_doctypes.py
+++ b/erpnext/patches/v12_0/rename_pricing_rule_child_doctypes.py
@@ -2,6 +2,7 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
 doctypes = {
diff --git a/erpnext/patches/v12_0/rename_tolerance_fields.py b/erpnext/patches/v12_0/rename_tolerance_fields.py
index 20b0963..ca2427b 100644
--- a/erpnext/patches/v12_0/rename_tolerance_fields.py
+++ b/erpnext/patches/v12_0/rename_tolerance_fields.py
@@ -1,6 +1,7 @@
 import frappe
 from frappe.model.utils.rename_field import rename_field
 
+
 def execute():
 	frappe.reload_doc("stock", "doctype", "item")
 	frappe.reload_doc("stock", "doctype", "stock_settings")
diff --git a/erpnext/patches/v12_0/replace_accounting_with_accounts_in_home_settings.py b/erpnext/patches/v12_0/replace_accounting_with_accounts_in_home_settings.py
index f88a22f..ff332f7 100644
--- a/erpnext/patches/v12_0/replace_accounting_with_accounts_in_home_settings.py
+++ b/erpnext/patches/v12_0/replace_accounting_with_accounts_in_home_settings.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 	frappe.db.sql("""UPDATE `tabUser` SET `home_settings` = REPLACE(`home_settings`, 'Accounting', 'Accounts')""")
 	frappe.cache().delete_key('home_settings')
diff --git a/erpnext/patches/v12_0/repost_stock_ledger_entries_for_target_warehouse.py b/erpnext/patches/v12_0/repost_stock_ledger_entries_for_target_warehouse.py
index c52f380..5150430 100644
--- a/erpnext/patches/v12_0/repost_stock_ledger_entries_for_target_warehouse.py
+++ b/erpnext/patches/v12_0/repost_stock_ledger_entries_for_target_warehouse.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	warehouse_perm = frappe.get_all("User Permission",
 		fields=["count(*) as p_count", "is_default", "user"], filters={"allow": "Warehouse"}, group_by="user")
diff --git a/erpnext/patches/v12_0/set_against_blanket_order_in_sales_and_purchase_order.py b/erpnext/patches/v12_0/set_against_blanket_order_in_sales_and_purchase_order.py
index 85202bf..b76e34a 100644
--- a/erpnext/patches/v12_0/set_against_blanket_order_in_sales_and_purchase_order.py
+++ b/erpnext/patches/v12_0/set_against_blanket_order_in_sales_and_purchase_order.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 
 	frappe.reload_doc('selling', 'doctype', 'sales_order_item', force=True)
diff --git a/erpnext/patches/v12_0/set_automatically_process_deferred_accounting_in_accounts_settings.py b/erpnext/patches/v12_0/set_automatically_process_deferred_accounting_in_accounts_settings.py
index b5d7e3d..849e96e 100644
--- a/erpnext/patches/v12_0/set_automatically_process_deferred_accounting_in_accounts_settings.py
+++ b/erpnext/patches/v12_0/set_automatically_process_deferred_accounting_in_accounts_settings.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc("accounts", "doctype", "accounts_settings")
 
diff --git a/erpnext/patches/v12_0/set_cost_center_in_child_table_of_expense_claim.py b/erpnext/patches/v12_0/set_cost_center_in_child_table_of_expense_claim.py
index 4415cfe..d3045a1 100644
--- a/erpnext/patches/v12_0/set_cost_center_in_child_table_of_expense_claim.py
+++ b/erpnext/patches/v12_0/set_cost_center_in_child_table_of_expense_claim.py
@@ -1,4 +1,6 @@
 import frappe
+
+
 def execute():
 	frappe.reload_doc('hr', 'doctype', 'expense_claim_detail')
 	frappe.db.sql("""
diff --git a/erpnext/patches/v12_0/set_cwip_and_delete_asset_settings.py b/erpnext/patches/v12_0/set_cwip_and_delete_asset_settings.py
index 13110df..e363c26 100644
--- a/erpnext/patches/v12_0/set_cwip_and_delete_asset_settings.py
+++ b/erpnext/patches/v12_0/set_cwip_and_delete_asset_settings.py
@@ -1,4 +1,5 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe.utils import cint
 
diff --git a/erpnext/patches/v12_0/set_default_homepage_type.py b/erpnext/patches/v12_0/set_default_homepage_type.py
index a290e31..1e4333a 100644
--- a/erpnext/patches/v12_0/set_default_homepage_type.py
+++ b/erpnext/patches/v12_0/set_default_homepage_type.py
@@ -1,4 +1,5 @@
 import frappe
 
+
 def execute():
 	frappe.db.set_value('Homepage', 'Homepage', 'hero_section_based_on', 'Default')
diff --git a/erpnext/patches/v12_0/set_default_payroll_based_on.py b/erpnext/patches/v12_0/set_default_payroll_based_on.py
index 038bd6d..85112f2 100644
--- a/erpnext/patches/v12_0/set_default_payroll_based_on.py
+++ b/erpnext/patches/v12_0/set_default_payroll_based_on.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc("hr", "doctype", "hr_settings")
 	frappe.db.set_value("HR Settings", None, "payroll_based_on", "Leave")
diff --git a/erpnext/patches/v12_0/set_expense_account_in_landed_cost_voucher_taxes.py b/erpnext/patches/v12_0/set_expense_account_in_landed_cost_voucher_taxes.py
index a27c7b2..49b3bff 100644
--- a/erpnext/patches/v12_0/set_expense_account_in_landed_cost_voucher_taxes.py
+++ b/erpnext/patches/v12_0/set_expense_account_in_landed_cost_voucher_taxes.py
@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
+
 import frappe
 from six import iteritems
 
+
 def execute():
 	frappe.reload_doctype('Landed Cost Taxes and Charges')
 
diff --git a/erpnext/patches/v12_0/set_gst_category.py b/erpnext/patches/v12_0/set_gst_category.py
index cc09395..094e2a3 100644
--- a/erpnext/patches/v12_0/set_gst_category.py
+++ b/erpnext/patches/v12_0/set_gst_category.py
@@ -1,6 +1,8 @@
 import frappe
+
 from erpnext.regional.india.setup import make_custom_fields
 
+
 def execute():
 
 	company = frappe.get_all('Company', filters = {'country': 'India'})
diff --git a/erpnext/patches/v12_0/set_italian_import_supplier_invoice_permissions.py b/erpnext/patches/v12_0/set_italian_import_supplier_invoice_permissions.py
index 8fdc73b..a991b3c 100644
--- a/erpnext/patches/v12_0/set_italian_import_supplier_invoice_permissions.py
+++ b/erpnext/patches/v12_0/set_italian_import_supplier_invoice_permissions.py
@@ -2,9 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
+
 from erpnext.regional.italy.setup import add_permissions
 
+
 def execute():
 	countries = frappe.get_all("Company", fields="country")
 	countries = [country["country"] for country in countries]
diff --git a/erpnext/patches/v12_0/set_multi_uom_in_rfq.py b/erpnext/patches/v12_0/set_multi_uom_in_rfq.py
index a5c8f75..fada5f0 100644
--- a/erpnext/patches/v12_0/set_multi_uom_in_rfq.py
+++ b/erpnext/patches/v12_0/set_multi_uom_in_rfq.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import flt
-from erpnext.stock.get_item_details import get_conversion_factor
+
 
 def execute():
 	frappe.reload_doc('buying', 'doctype', 'request_for_quotation_item')
diff --git a/erpnext/patches/v12_0/set_payment_entry_status.py b/erpnext/patches/v12_0/set_payment_entry_status.py
index 84645a3..f879295 100644
--- a/erpnext/patches/v12_0/set_payment_entry_status.py
+++ b/erpnext/patches/v12_0/set_payment_entry_status.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 	frappe.reload_doctype("Payment Entry")
 	frappe.db.sql("""update `tabPayment Entry` set status = CASE
diff --git a/erpnext/patches/v12_0/set_permission_einvoicing.py b/erpnext/patches/v12_0/set_permission_einvoicing.py
index e223510..01cab14 100644
--- a/erpnext/patches/v12_0/set_permission_einvoicing.py
+++ b/erpnext/patches/v12_0/set_permission_einvoicing.py
@@ -1,7 +1,9 @@
 import frappe
-from erpnext.regional.italy.setup import make_custom_fields
 from frappe.permissions import add_permission, update_permission_property
 
+from erpnext.regional.italy.setup import make_custom_fields
+
+
 def execute():
 	company = frappe.get_all('Company', filters = {'country': 'Italy'})
 
diff --git a/erpnext/patches/v12_0/set_priority_for_support.py b/erpnext/patches/v12_0/set_priority_for_support.py
index 66696be..6d7d099 100644
--- a/erpnext/patches/v12_0/set_priority_for_support.py
+++ b/erpnext/patches/v12_0/set_priority_for_support.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 	frappe.reload_doc("support", "doctype", "issue_priority")
 	frappe.reload_doc("support", "doctype", "service_level_priority")
diff --git a/erpnext/patches/v12_0/set_produced_qty_field_in_sales_order_for_work_order.py b/erpnext/patches/v12_0/set_produced_qty_field_in_sales_order_for_work_order.py
index 6c11cb4..9c851dd 100644
--- a/erpnext/patches/v12_0/set_produced_qty_field_in_sales_order_for_work_order.py
+++ b/erpnext/patches/v12_0/set_produced_qty_field_in_sales_order_for_work_order.py
@@ -1,7 +1,8 @@
 import frappe
-from frappe.utils import flt
+
 from erpnext.selling.doctype.sales_order.sales_order import update_produced_qty_in_so_item
 
+
 def execute():
 	frappe.reload_doctype('Sales Order Item')
 	frappe.reload_doctype('Sales Order')
diff --git a/erpnext/patches/v12_0/set_production_capacity_in_workstation.py b/erpnext/patches/v12_0/set_production_capacity_in_workstation.py
index babaebe..248d335 100644
--- a/erpnext/patches/v12_0/set_production_capacity_in_workstation.py
+++ b/erpnext/patches/v12_0/set_production_capacity_in_workstation.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
     frappe.reload_doc("manufacturing", "doctype", "workstation")
 
diff --git a/erpnext/patches/v12_0/set_published_in_hub_tracked_item.py b/erpnext/patches/v12_0/set_published_in_hub_tracked_item.py
index e54c7f3..73c6ce8 100644
--- a/erpnext/patches/v12_0/set_published_in_hub_tracked_item.py
+++ b/erpnext/patches/v12_0/set_published_in_hub_tracked_item.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc("Hub Node", "doctype", "Hub Tracked Item")
 	if not frappe.db.a_row_exists("Hub Tracked Item"):
diff --git a/erpnext/patches/v12_0/set_purchase_receipt_delivery_note_detail.py b/erpnext/patches/v12_0/set_purchase_receipt_delivery_note_detail.py
index 52c9a2d..cad947f 100644
--- a/erpnext/patches/v12_0/set_purchase_receipt_delivery_note_detail.py
+++ b/erpnext/patches/v12_0/set_purchase_receipt_delivery_note_detail.py
@@ -1,7 +1,10 @@
 from __future__ import unicode_literals
-import frappe
+
 from collections import defaultdict
 
+import frappe
+
+
 def execute():
 
 	frappe.reload_doc('stock', 'doctype', 'delivery_note_item', force=True)
diff --git a/erpnext/patches/v12_0/set_quotation_status.py b/erpnext/patches/v12_0/set_quotation_status.py
index 87643a2..bb17276 100644
--- a/erpnext/patches/v12_0/set_quotation_status.py
+++ b/erpnext/patches/v12_0/set_quotation_status.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 
 	frappe.db.sql(""" UPDATE `tabQuotation` set status = 'Open'
diff --git a/erpnext/patches/v12_0/set_received_qty_in_material_request_as_per_stock_uom.py b/erpnext/patches/v12_0/set_received_qty_in_material_request_as_per_stock_uom.py
index 88c3e2e..f8b510e 100644
--- a/erpnext/patches/v12_0/set_received_qty_in_material_request_as_per_stock_uom.py
+++ b/erpnext/patches/v12_0/set_received_qty_in_material_request_as_per_stock_uom.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	purchase_receipts = frappe.db.sql("""
 		SELECT
diff --git a/erpnext/patches/v12_0/set_serial_no_status.py b/erpnext/patches/v12_0/set_serial_no_status.py
index 3b5f5ef..9a05e70 100644
--- a/erpnext/patches/v12_0/set_serial_no_status.py
+++ b/erpnext/patches/v12_0/set_serial_no_status.py
@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe.utils import getdate, nowdate
 
+
 def execute():
 	frappe.reload_doc('stock', 'doctype', 'serial_no')
 
diff --git a/erpnext/patches/v12_0/set_task_status.py b/erpnext/patches/v12_0/set_task_status.py
index dbd7e5a..1b4955a 100644
--- a/erpnext/patches/v12_0/set_task_status.py
+++ b/erpnext/patches/v12_0/set_task_status.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 	frappe.reload_doctype('Task')
 
diff --git a/erpnext/patches/v12_0/set_updated_purpose_in_pick_list.py b/erpnext/patches/v12_0/set_updated_purpose_in_pick_list.py
index 1cc37ca..21ee23b 100644
--- a/erpnext/patches/v12_0/set_updated_purpose_in_pick_list.py
+++ b/erpnext/patches/v12_0/set_updated_purpose_in_pick_list.py
@@ -5,6 +5,7 @@
 
 import frappe
 
+
 def execute():
     frappe.reload_doc("stock", "doctype", "pick_list")
     frappe.db.sql("""UPDATE `tabPick List` set purpose = 'Delivery'
diff --git a/erpnext/patches/v12_0/set_valid_till_date_in_supplier_quotation.py b/erpnext/patches/v12_0/set_valid_till_date_in_supplier_quotation.py
index 4a6e228..72d5521 100644
--- a/erpnext/patches/v12_0/set_valid_till_date_in_supplier_quotation.py
+++ b/erpnext/patches/v12_0/set_valid_till_date_in_supplier_quotation.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc("buying", "doctype", "supplier_quotation")
 	frappe.db.sql("""UPDATE `tabSupplier Quotation`
diff --git a/erpnext/patches/v12_0/stock_entry_enhancements.py b/erpnext/patches/v12_0/stock_entry_enhancements.py
index 17fdcd9..b99501d 100644
--- a/erpnext/patches/v12_0/stock_entry_enhancements.py
+++ b/erpnext/patches/v12_0/stock_entry_enhancements.py
@@ -3,9 +3,11 @@
 
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.custom.doctype.custom_field.custom_field import create_custom_fields
 
+
 def execute():
 	create_stock_entry_types()
 
diff --git a/erpnext/patches/v12_0/unhide_cost_center_field.py b/erpnext/patches/v12_0/unhide_cost_center_field.py
index 3474a34..823dd22 100644
--- a/erpnext/patches/v12_0/unhide_cost_center_field.py
+++ b/erpnext/patches/v12_0/unhide_cost_center_field.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.db.sql("""
 		DELETE FROM `tabProperty Setter`
diff --git a/erpnext/patches/v12_0/unset_customer_supplier_based_on_type_of_item_price.py b/erpnext/patches/v12_0/unset_customer_supplier_based_on_type_of_item_price.py
index b8efb21..61c4c60 100644
--- a/erpnext/patches/v12_0/unset_customer_supplier_based_on_type_of_item_price.py
+++ b/erpnext/patches/v12_0/unset_customer_supplier_based_on_type_of_item_price.py
@@ -1,4 +1,5 @@
 from __future__ import unicode_literals
+
 import frappe
 
 
diff --git a/erpnext/patches/v12_0/update_address_template_for_india.py b/erpnext/patches/v12_0/update_address_template_for_india.py
index 0d582da..d41aae2 100644
--- a/erpnext/patches/v12_0/update_address_template_for_india.py
+++ b/erpnext/patches/v12_0/update_address_template_for_india.py
@@ -2,9 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
+
 from erpnext.regional.address_template.setup import set_up_address_templates
 
+
 def execute():
 	if frappe.db.get_value('Company',  {'country': 'India'},  'name'):
 		address_template = frappe.db.get_value('Address Template', 'India', 'template')
diff --git a/erpnext/patches/v12_0/update_appointment_reminder_scheduler_entry.py b/erpnext/patches/v12_0/update_appointment_reminder_scheduler_entry.py
index f451664..024cb2b 100644
--- a/erpnext/patches/v12_0/update_appointment_reminder_scheduler_entry.py
+++ b/erpnext/patches/v12_0/update_appointment_reminder_scheduler_entry.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 	job = frappe.db.exists('Scheduled Job Type', 'patient_appointment.send_appointment_reminder')
 	if job:
diff --git a/erpnext/patches/v12_0/update_bom_in_so_mr.py b/erpnext/patches/v12_0/update_bom_in_so_mr.py
index 8a87171..2834075 100644
--- a/erpnext/patches/v12_0/update_bom_in_so_mr.py
+++ b/erpnext/patches/v12_0/update_bom_in_so_mr.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc("stock", "doctype", "material_request_item")
 	frappe.reload_doc("selling", "doctype", "sales_order_item")
diff --git a/erpnext/patches/v12_0/update_due_date_in_gle.py b/erpnext/patches/v12_0/update_due_date_in_gle.py
index 3484872..60ad325 100644
--- a/erpnext/patches/v12_0/update_due_date_in_gle.py
+++ b/erpnext/patches/v12_0/update_due_date_in_gle.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
     frappe.reload_doc("accounts", "doctype", "gl_entry")
 
diff --git a/erpnext/patches/v12_0/update_end_date_and_status_in_email_campaign.py b/erpnext/patches/v12_0/update_end_date_and_status_in_email_campaign.py
index c45f622..208076b 100644
--- a/erpnext/patches/v12_0/update_end_date_and_status_in_email_campaign.py
+++ b/erpnext/patches/v12_0/update_end_date_and_status_in_email_campaign.py
@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe.utils import add_days, getdate, today
 
+
 def execute():
     if frappe.db.exists('DocType', 'Email Campaign'):
         email_campaign = frappe.get_all('Email Campaign')
diff --git a/erpnext/patches/v12_0/update_ewaybill_field_position.py b/erpnext/patches/v12_0/update_ewaybill_field_position.py
index 9e5f599..520b5d0 100644
--- a/erpnext/patches/v12_0/update_ewaybill_field_position.py
+++ b/erpnext/patches/v12_0/update_ewaybill_field_position.py
@@ -1,6 +1,7 @@
 from __future__ import unicode_literals
+
 import frappe
-from erpnext.regional.india.setup import make_custom_fields
+
 
 def execute():
 	company = frappe.get_all('Company', filters = {'country': 'India'})
diff --git a/erpnext/patches/v12_0/update_gst_category.py b/erpnext/patches/v12_0/update_gst_category.py
index 1a54216..bee8919 100644
--- a/erpnext/patches/v12_0/update_gst_category.py
+++ b/erpnext/patches/v12_0/update_gst_category.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 
     company = frappe.get_all('Company', filters = {'country': 'India'})
diff --git a/erpnext/patches/v12_0/update_healthcare_refactored_changes.py b/erpnext/patches/v12_0/update_healthcare_refactored_changes.py
index d0b0443..bfad3dd 100644
--- a/erpnext/patches/v12_0/update_healthcare_refactored_changes.py
+++ b/erpnext/patches/v12_0/update_healthcare_refactored_changes.py
@@ -1,7 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.utils.rename_field import rename_field
-from frappe.modules import scrub, get_doctype_module
+from frappe.modules import get_doctype_module, scrub
 
 field_rename_map = {
 	'Healthcare Settings': [
diff --git a/erpnext/patches/v12_0/update_is_cancelled_field.py b/erpnext/patches/v12_0/update_is_cancelled_field.py
index f69dcc9..3e7c37f 100644
--- a/erpnext/patches/v12_0/update_is_cancelled_field.py
+++ b/erpnext/patches/v12_0/update_is_cancelled_field.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	try:
 		frappe.db.sql("UPDATE `tabStock Ledger Entry` SET is_cancelled = 0 where is_cancelled in ('', NULL, 'No')")
diff --git a/erpnext/patches/v12_0/update_item_tax_template_company.py b/erpnext/patches/v12_0/update_item_tax_template_company.py
index e15894d..3ad983d 100644
--- a/erpnext/patches/v12_0/update_item_tax_template_company.py
+++ b/erpnext/patches/v12_0/update_item_tax_template_company.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
     frappe.reload_doc('accounts', 'doctype', 'item_tax_template')
 
diff --git a/erpnext/patches/v12_0/update_owner_fields_in_acc_dimension_custom_fields.py b/erpnext/patches/v12_0/update_owner_fields_in_acc_dimension_custom_fields.py
index 6ebaf48..09e2319 100644
--- a/erpnext/patches/v12_0/update_owner_fields_in_acc_dimension_custom_fields.py
+++ b/erpnext/patches/v12_0/update_owner_fields_in_acc_dimension_custom_fields.py
@@ -1,6 +1,11 @@
 from __future__ import unicode_literals
+
 import frappe
-from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import get_doctypes_with_dimensions
+
+from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import (
+	get_doctypes_with_dimensions,
+)
+
 
 def execute():
 	accounting_dimensions = frappe.db.sql("""select fieldname from
diff --git a/erpnext/patches/v12_0/update_price_list_currency_in_bom.py b/erpnext/patches/v12_0/update_price_list_currency_in_bom.py
index 09f0707..e4c1008 100644
--- a/erpnext/patches/v12_0/update_price_list_currency_in_bom.py
+++ b/erpnext/patches/v12_0/update_price_list_currency_in_bom.py
@@ -1,8 +1,11 @@
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import getdate, flt
+from frappe.utils import getdate
+
 from erpnext.setup.utils import get_exchange_rate
 
+
 def execute():
 	frappe.reload_doc("manufacturing", "doctype", "bom")
 	frappe.reload_doc("manufacturing", "doctype", "bom_item")
diff --git a/erpnext/patches/v12_0/update_price_or_product_discount.py b/erpnext/patches/v12_0/update_price_or_product_discount.py
index 3a8cd43..4ff3925 100644
--- a/erpnext/patches/v12_0/update_price_or_product_discount.py
+++ b/erpnext/patches/v12_0/update_price_or_product_discount.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc("accounts", "doctype", "pricing_rule")
 
diff --git a/erpnext/patches/v12_0/update_pricing_rule_fields.py b/erpnext/patches/v12_0/update_pricing_rule_fields.py
index 985613a..6f102e9 100644
--- a/erpnext/patches/v12_0/update_pricing_rule_fields.py
+++ b/erpnext/patches/v12_0/update_pricing_rule_fields.py
@@ -2,6 +2,7 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
 parentfield = {
diff --git a/erpnext/patches/v12_0/update_state_code_for_daman_and_diu.py b/erpnext/patches/v12_0/update_state_code_for_daman_and_diu.py
index 8dbfa18..25cf6b9 100644
--- a/erpnext/patches/v12_0/update_state_code_for_daman_and_diu.py
+++ b/erpnext/patches/v12_0/update_state_code_for_daman_and_diu.py
@@ -1,6 +1,8 @@
 import frappe
+
 from erpnext.regional.india import states
 
+
 def execute():
 
 	company = frappe.get_all('Company', filters = {'country': 'India'})
diff --git a/erpnext/patches/v12_0/update_uom_conversion_factor.py b/erpnext/patches/v12_0/update_uom_conversion_factor.py
index 24914fd..7c7477a 100644
--- a/erpnext/patches/v12_0/update_uom_conversion_factor.py
+++ b/erpnext/patches/v12_0/update_uom_conversion_factor.py
@@ -1,5 +1,7 @@
 from __future__ import unicode_literals
-import frappe, json
+
+import frappe
+
 
 def execute():
 	from erpnext.setup.setup_wizard.operations.install_fixtures import add_uom_data
diff --git a/erpnext/patches/v12_0/update_vehicle_no_reqd_condition.py b/erpnext/patches/v12_0/update_vehicle_no_reqd_condition.py
index 01a4ae0..69bfaaa 100644
--- a/erpnext/patches/v12_0/update_vehicle_no_reqd_condition.py
+++ b/erpnext/patches/v12_0/update_vehicle_no_reqd_condition.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 	frappe.reload_doc('custom', 'doctype', 'custom_field')
 	company = frappe.get_all('Company', filters = {'country': 'India'})
diff --git a/erpnext/patches/v13_0/add_custom_field_for_south_africa.py b/erpnext/patches/v13_0/add_custom_field_for_south_africa.py
index 73ff1ca..93a7de6 100644
--- a/erpnext/patches/v13_0/add_custom_field_for_south_africa.py
+++ b/erpnext/patches/v13_0/add_custom_field_for_south_africa.py
@@ -2,8 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from erpnext.regional.south_africa.setup import make_custom_fields, add_permissions
+
+from erpnext.regional.south_africa.setup import add_permissions, make_custom_fields
+
 
 def execute():
 	company = frappe.get_all('Company', filters = {'country': 'South Africa'})
diff --git a/erpnext/patches/v13_0/add_doctype_to_sla.py b/erpnext/patches/v13_0/add_doctype_to_sla.py
index cdc5a1e..7252b3e 100644
--- a/erpnext/patches/v13_0/add_doctype_to_sla.py
+++ b/erpnext/patches/v13_0/add_doctype_to_sla.py
@@ -6,6 +6,7 @@
 import frappe
 from frappe.model.utils.rename_field import rename_field
 
+
 def execute():
 	frappe.reload_doc('support', 'doctype', 'sla_fulfilled_on_status')
 	frappe.reload_doc('support', 'doctype', 'service_level_agreement')
diff --git a/erpnext/patches/v13_0/add_missing_fg_item_for_stock_entry.py b/erpnext/patches/v13_0/add_missing_fg_item_for_stock_entry.py
index 0d8109c..bd18b9b 100644
--- a/erpnext/patches/v13_0/add_missing_fg_item_for_stock_entry.py
+++ b/erpnext/patches/v13_0/add_missing_fg_item_for_stock_entry.py
@@ -2,9 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 import frappe
-from frappe.utils import cstr, flt, cint
-from erpnext.stock.stock_ledger import make_sl_entries
+from frappe.utils import cint, cstr, flt
+
 from erpnext.controllers.stock_controller import create_repost_item_valuation_entry
+from erpnext.stock.stock_ledger import make_sl_entries
+
 
 def execute():
 	if not frappe.db.has_column('Work Order', 'has_batch_no'):
diff --git a/erpnext/patches/v13_0/add_naming_series_to_old_projects.py b/erpnext/patches/v13_0/add_naming_series_to_old_projects.py
index a7b66f0..f029f75 100644
--- a/erpnext/patches/v13_0/add_naming_series_to_old_projects.py
+++ b/erpnext/patches/v13_0/add_naming_series_to_old_projects.py
@@ -1,6 +1,7 @@
 from __future__ import unicode_literals
+
 import frappe
-from frappe.custom.doctype.property_setter.property_setter import make_property_setter, delete_property_setter
+
 
 def execute():
 	frappe.reload_doc("projects", "doctype", "project")
diff --git a/erpnext/patches/v13_0/add_po_to_global_search.py b/erpnext/patches/v13_0/add_po_to_global_search.py
index 1c60b18..15b7c71 100644
--- a/erpnext/patches/v13_0/add_po_to_global_search.py
+++ b/erpnext/patches/v13_0/add_po_to_global_search.py
@@ -1,4 +1,5 @@
 from __future__ import unicode_literals
+
 import frappe
 
 
diff --git a/erpnext/patches/v13_0/add_standard_navbar_items.py b/erpnext/patches/v13_0/add_standard_navbar_items.py
index d05b258..699c480 100644
--- a/erpnext/patches/v13_0/add_standard_navbar_items.py
+++ b/erpnext/patches/v13_0/add_standard_navbar_items.py
@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
+
 # import frappe
 from erpnext.setup.install import add_standard_navbar_items
 
+
 def execute():
 	# Add standard navbar items for ERPNext in Navbar Settings
 	add_standard_navbar_items()
diff --git a/erpnext/patches/v13_0/bill_for_rejected_quantity_in_purchase_invoice.py b/erpnext/patches/v13_0/bill_for_rejected_quantity_in_purchase_invoice.py
index 7de9fa1..07d1cee 100644
--- a/erpnext/patches/v13_0/bill_for_rejected_quantity_in_purchase_invoice.py
+++ b/erpnext/patches/v13_0/bill_for_rejected_quantity_in_purchase_invoice.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doctype("Buying Settings")
 	buying_settings = frappe.get_single("Buying Settings")
diff --git a/erpnext/patches/v13_0/change_default_pos_print_format.py b/erpnext/patches/v13_0/change_default_pos_print_format.py
index 1e4f383..5a0320a 100644
--- a/erpnext/patches/v13_0/change_default_pos_print_format.py
+++ b/erpnext/patches/v13_0/change_default_pos_print_format.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.db.sql(
 		"""UPDATE `tabPOS Profile` profile
diff --git a/erpnext/patches/v13_0/check_is_income_tax_component.py b/erpnext/patches/v13_0/check_is_income_tax_component.py
index 7a52dc8..aac87ba 100644
--- a/erpnext/patches/v13_0/check_is_income_tax_component.py
+++ b/erpnext/patches/v13_0/check_is_income_tax_component.py
@@ -3,9 +3,12 @@
 
 from __future__ import unicode_literals
 
-import frappe, erpnext
+import frappe
+
+import erpnext
 from erpnext.regional.india.setup import setup
 
+
 def execute():
 
 	doctypes = ['salary_component',
diff --git a/erpnext/patches/v13_0/convert_qi_parameter_to_link_field.py b/erpnext/patches/v13_0/convert_qi_parameter_to_link_field.py
index 341955a..66ac62f 100644
--- a/erpnext/patches/v13_0/convert_qi_parameter_to_link_field.py
+++ b/erpnext/patches/v13_0/convert_qi_parameter_to_link_field.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc('stock', 'doctype', 'quality_inspection_parameter')
 
diff --git a/erpnext/patches/v13_0/create_healthcare_custom_fields_in_stock_entry_detail.py b/erpnext/patches/v13_0/create_healthcare_custom_fields_in_stock_entry_detail.py
index 08d4876..543faeb 100644
--- a/erpnext/patches/v13_0/create_healthcare_custom_fields_in_stock_entry_detail.py
+++ b/erpnext/patches/v13_0/create_healthcare_custom_fields_in_stock_entry_detail.py
@@ -1,7 +1,9 @@
 import frappe
 from frappe.custom.doctype.custom_field.custom_field import create_custom_fields
+
 from erpnext.domains.healthcare import data
 
+
 def execute():
 	if 'Healthcare' not in frappe.get_active_domains():
 		return
diff --git a/erpnext/patches/v13_0/create_leave_policy_assignment_based_on_employee_current_leave_policy.py b/erpnext/patches/v13_0/create_leave_policy_assignment_based_on_employee_current_leave_policy.py
index 9a35453..b1b5c24 100644
--- a/erpnext/patches/v13_0/create_leave_policy_assignment_based_on_employee_current_leave_policy.py
+++ b/erpnext/patches/v13_0/create_leave_policy_assignment_based_on_employee_current_leave_policy.py
@@ -5,6 +5,7 @@
 
 import frappe
 
+
 def execute():
     if "leave_policy" in frappe.db.get_table_columns("Employee"):
         employees_with_leave_policy = frappe.db.sql("SELECT name, leave_policy FROM `tabEmployee` WHERE leave_policy IS NOT NULL and leave_policy != ''", as_dict = 1)
diff --git a/erpnext/patches/v13_0/create_uae_pos_invoice_fields.py b/erpnext/patches/v13_0/create_uae_pos_invoice_fields.py
index 6ad3402..3bfa78f 100644
--- a/erpnext/patches/v13_0/create_uae_pos_invoice_fields.py
+++ b/erpnext/patches/v13_0/create_uae_pos_invoice_fields.py
@@ -4,8 +4,10 @@
 from __future__ import unicode_literals
 
 import frappe
+
 from erpnext.regional.united_arab_emirates.setup import make_custom_fields
 
+
 def execute():
 	company = frappe.get_all('Company', filters = {'country': ['in', ['Saudi Arabia', 'United Arab Emirates']]})
 	if not company:
diff --git a/erpnext/patches/v13_0/custom_fields_for_taxjar_integration.py b/erpnext/patches/v13_0/custom_fields_for_taxjar_integration.py
index 125be9b..eee9f11 100644
--- a/erpnext/patches/v13_0/custom_fields_for_taxjar_integration.py
+++ b/erpnext/patches/v13_0/custom_fields_for_taxjar_integration.py
@@ -1,8 +1,11 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe.custom.doctype.custom_field.custom_field import create_custom_fields
+
 from erpnext.regional.united_states.setup import add_permissions
 
+
 def execute():
 	company = frappe.get_all('Company', filters = {'country': 'United States'}, fields=['name'])
 	if not company:
diff --git a/erpnext/patches/v13_0/delete_old_bank_reconciliation_doctypes.py b/erpnext/patches/v13_0/delete_old_bank_reconciliation_doctypes.py
index 77a23cf..089bbe3 100644
--- a/erpnext/patches/v13_0/delete_old_bank_reconciliation_doctypes.py
+++ b/erpnext/patches/v13_0/delete_old_bank_reconciliation_doctypes.py
@@ -6,6 +6,7 @@
 import frappe
 from frappe.model.utils.rename_field import rename_field
 
+
 def execute():
 	doctypes = [
 		"Bank Statement Settings",
diff --git a/erpnext/patches/v13_0/delete_old_purchase_reports.py b/erpnext/patches/v13_0/delete_old_purchase_reports.py
index 57620d3..3cb7e12 100644
--- a/erpnext/patches/v13_0/delete_old_purchase_reports.py
+++ b/erpnext/patches/v13_0/delete_old_purchase_reports.py
@@ -4,8 +4,10 @@
 from __future__ import unicode_literals
 
 import frappe
+
 from erpnext.accounts.utils import check_and_delete_linked_reports
 
+
 def execute():
 	reports_to_delete = ["Requested Items To Be Ordered",
 		"Purchase Order Items To Be Received or Billed","Purchase Order Items To Be Received",
diff --git a/erpnext/patches/v13_0/delete_old_sales_reports.py b/erpnext/patches/v13_0/delete_old_sales_reports.py
index 905a42c..c9a3666 100644
--- a/erpnext/patches/v13_0/delete_old_sales_reports.py
+++ b/erpnext/patches/v13_0/delete_old_sales_reports.py
@@ -4,8 +4,10 @@
 from __future__ import unicode_literals
 
 import frappe
+
 from erpnext.accounts.utils import check_and_delete_linked_reports
 
+
 def execute():
 	reports_to_delete = ["Ordered Items To Be Delivered", "Ordered Items To Be Billed"]
 
diff --git a/erpnext/patches/v13_0/delete_orphaned_tables.py b/erpnext/patches/v13_0/delete_orphaned_tables.py
index 50a4a0e..1ea22d6 100644
--- a/erpnext/patches/v13_0/delete_orphaned_tables.py
+++ b/erpnext/patches/v13_0/delete_orphaned_tables.py
@@ -6,6 +6,7 @@
 import frappe
 from frappe.utils import getdate
 
+
 def execute():
     frappe.reload_doc('setup', 'doctype', 'transaction_deletion_record')
 
diff --git a/erpnext/patches/v13_0/delete_report_requested_items_to_order.py b/erpnext/patches/v13_0/delete_report_requested_items_to_order.py
index 8d6340d..87565f0 100644
--- a/erpnext/patches/v13_0/delete_report_requested_items_to_order.py
+++ b/erpnext/patches/v13_0/delete_report_requested_items_to_order.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 	""" Check for one or multiple Auto Email Reports and delete """
 	auto_email_reports = frappe.db.get_values("Auto Email Report", {"report": "Requested Items to Order"}, ["name"])
diff --git a/erpnext/patches/v13_0/drop_razorpay_payload_column.py b/erpnext/patches/v13_0/drop_razorpay_payload_column.py
index 76b8041..a7aee52 100644
--- a/erpnext/patches/v13_0/drop_razorpay_payload_column.py
+++ b/erpnext/patches/v13_0/drop_razorpay_payload_column.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	if frappe.db.exists("DocType", "Membership"):
 		if 'webhook_payload' in frappe.db.get_table_columns("Membership"):
diff --git a/erpnext/patches/v13_0/fix_non_unique_represents_company.py b/erpnext/patches/v13_0/fix_non_unique_represents_company.py
index f20c73a..e91c1db 100644
--- a/erpnext/patches/v13_0/fix_non_unique_represents_company.py
+++ b/erpnext/patches/v13_0/fix_non_unique_represents_company.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 	frappe.db.sql("""
 		update tabCustomer
diff --git a/erpnext/patches/v13_0/germany_make_custom_fields.py b/erpnext/patches/v13_0/germany_make_custom_fields.py
index 41ab945..86ad188 100644
--- a/erpnext/patches/v13_0/germany_make_custom_fields.py
+++ b/erpnext/patches/v13_0/germany_make_custom_fields.py
@@ -4,6 +4,7 @@
 from __future__ import unicode_literals
 
 import frappe
+
 from erpnext.regional.germany.setup import make_custom_fields
 
 
diff --git a/erpnext/patches/v13_0/healthcare_lab_module_rename_doctypes.py b/erpnext/patches/v13_0/healthcare_lab_module_rename_doctypes.py
index 2549a1e..f297654 100644
--- a/erpnext/patches/v13_0/healthcare_lab_module_rename_doctypes.py
+++ b/erpnext/patches/v13_0/healthcare_lab_module_rename_doctypes.py
@@ -1,4 +1,5 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.utils.rename_field import rename_field
 
diff --git a/erpnext/patches/v13_0/item_reposting_for_incorrect_sl_and_gl.py b/erpnext/patches/v13_0/item_reposting_for_incorrect_sl_and_gl.py
index c4ad1b7..e4cb9ae 100644
--- a/erpnext/patches/v13_0/item_reposting_for_incorrect_sl_and_gl.py
+++ b/erpnext/patches/v13_0/item_reposting_for_incorrect_sl_and_gl.py
@@ -1,8 +1,9 @@
 import frappe
-from frappe import _
-from frappe.utils import getdate, get_time, today
-from erpnext.stock.stock_ledger import update_entries_after
+from frappe.utils import get_time, getdate, today
+
 from erpnext.accounts.utils import update_gl_entries_after
+from erpnext.stock.stock_ledger import update_entries_after
+
 
 def execute():
 	for doctype in ('repost_item_valuation', 'stock_entry_detail', 'purchase_receipt_item',
diff --git a/erpnext/patches/v13_0/loyalty_points_entry_for_pos_invoice.py b/erpnext/patches/v13_0/loyalty_points_entry_for_pos_invoice.py
index d2228c3..43c6c49 100644
--- a/erpnext/patches/v13_0/loyalty_points_entry_for_pos_invoice.py
+++ b/erpnext/patches/v13_0/loyalty_points_entry_for_pos_invoice.py
@@ -5,6 +5,7 @@
 
 import frappe
 
+
 def execute():
 	'''`sales_invoice` field from loyalty point entry is splitted into `invoice_type` & `invoice` fields'''
 
diff --git a/erpnext/patches/v13_0/make_non_standard_user_type.py b/erpnext/patches/v13_0/make_non_standard_user_type.py
index 73361f0..746e408 100644
--- a/erpnext/patches/v13_0/make_non_standard_user_type.py
+++ b/erpnext/patches/v13_0/make_non_standard_user_type.py
@@ -2,10 +2,13 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from six import iteritems
+
 from erpnext.setup.install import add_non_standard_user_types
 
+
 def execute():
 	doctype_dict = {
 		'projects': ['Timesheet'],
diff --git a/erpnext/patches/v13_0/move_branch_code_to_bank_account.py b/erpnext/patches/v13_0/move_branch_code_to_bank_account.py
index 24d9196..9116f58 100644
--- a/erpnext/patches/v13_0/move_branch_code_to_bank_account.py
+++ b/erpnext/patches/v13_0/move_branch_code_to_bank_account.py
@@ -5,6 +5,7 @@
 
 import frappe
 
+
 def execute():
 
 	frappe.reload_doc('accounts', 'doctype', 'bank_account')
diff --git a/erpnext/patches/v13_0/move_doctype_reports_and_notification_from_hr_to_payroll.py b/erpnext/patches/v13_0/move_doctype_reports_and_notification_from_hr_to_payroll.py
index 4d7c85c..064e8d7 100644
--- a/erpnext/patches/v13_0/move_doctype_reports_and_notification_from_hr_to_payroll.py
+++ b/erpnext/patches/v13_0/move_doctype_reports_and_notification_from_hr_to_payroll.py
@@ -5,6 +5,7 @@
 
 import frappe
 
+
 def execute():
     frappe.db.sql("""UPDATE `tabPrint Format`
         SET module = 'Payroll'
diff --git a/erpnext/patches/v13_0/move_payroll_setting_separately_from_hr_settings.py b/erpnext/patches/v13_0/move_payroll_setting_separately_from_hr_settings.py
index a901064..85d5109 100644
--- a/erpnext/patches/v13_0/move_payroll_setting_separately_from_hr_settings.py
+++ b/erpnext/patches/v13_0/move_payroll_setting_separately_from_hr_settings.py
@@ -5,6 +5,7 @@
 
 import frappe
 
+
 def execute():
     data = frappe.db.sql('''SELECT *
         FROM `tabSingles`
diff --git a/erpnext/patches/v13_0/move_tax_slabs_from_payroll_period_to_income_tax_slab.py b/erpnext/patches/v13_0/move_tax_slabs_from_payroll_period_to_income_tax_slab.py
index 4262920..e73fa7b 100644
--- a/erpnext/patches/v13_0/move_tax_slabs_from_payroll_period_to_income_tax_slab.py
+++ b/erpnext/patches/v13_0/move_tax_slabs_from_payroll_period_to_income_tax_slab.py
@@ -4,7 +4,7 @@
 from __future__ import unicode_literals
 
 import frappe
-from frappe.model.utils.rename_field import rename_field
+
 
 def execute():
 	if not (frappe.db.table_exists("Payroll Period") and frappe.db.table_exists("Taxable Salary Slab")):
diff --git a/erpnext/patches/v13_0/patch_to_fix_reverse_linking_in_additional_salary_encashment_and_incentive.py b/erpnext/patches/v13_0/patch_to_fix_reverse_linking_in_additional_salary_encashment_and_incentive.py
index 15aeb76..bb539a7 100644
--- a/erpnext/patches/v13_0/patch_to_fix_reverse_linking_in_additional_salary_encashment_and_incentive.py
+++ b/erpnext/patches/v13_0/patch_to_fix_reverse_linking_in_additional_salary_encashment_and_incentive.py
@@ -2,6 +2,7 @@
 
 import frappe
 
+
 def execute():
 	if not frappe.db.table_exists("Additional Salary"):
 		return
diff --git a/erpnext/patches/v13_0/print_uom_after_quantity_patch.py b/erpnext/patches/v13_0/print_uom_after_quantity_patch.py
index 0de3728..f2022b2 100644
--- a/erpnext/patches/v13_0/print_uom_after_quantity_patch.py
+++ b/erpnext/patches/v13_0/print_uom_after_quantity_patch.py
@@ -3,8 +3,8 @@
 
 from __future__ import unicode_literals
 
-import frappe
 from erpnext.setup.install import create_print_uom_after_qty_custom_field
 
+
 def execute():
     create_print_uom_after_qty_custom_field()
diff --git a/erpnext/patches/v13_0/remove_attribute_field_from_item_variant_setting.py b/erpnext/patches/v13_0/remove_attribute_field_from_item_variant_setting.py
index 53da700..bbe3eb5 100644
--- a/erpnext/patches/v13_0/remove_attribute_field_from_item_variant_setting.py
+++ b/erpnext/patches/v13_0/remove_attribute_field_from_item_variant_setting.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 	"""Remove has_variants and attribute fields from item variant settings."""
 	frappe.reload_doc("stock", "doctype", "Item Variant Settings")
diff --git a/erpnext/patches/v13_0/rename_discharge_date_in_ip_record.py b/erpnext/patches/v13_0/rename_discharge_date_in_ip_record.py
index 491dc82..2a04211 100644
--- a/erpnext/patches/v13_0/rename_discharge_date_in_ip_record.py
+++ b/erpnext/patches/v13_0/rename_discharge_date_in_ip_record.py
@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.utils.rename_field import rename_field
 
+
 def execute():
 	frappe.reload_doc("Healthcare", "doctype", "Inpatient Record")
 	if frappe.db.has_column("Inpatient Record", "discharge_date"):
diff --git a/erpnext/patches/v13_0/rename_issue_doctype_fields.py b/erpnext/patches/v13_0/rename_issue_doctype_fields.py
index 4885c0b..4aeafea 100644
--- a/erpnext/patches/v13_0/rename_issue_doctype_fields.py
+++ b/erpnext/patches/v13_0/rename_issue_doctype_fields.py
@@ -2,9 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.utils.rename_field import rename_field
 
+
 def execute():
 	if frappe.db.exists('DocType', 'Issue'):
 		issues = frappe.db.get_all('Issue', fields=['name', 'response_by_variance', 'resolution_by_variance', 'mins_to_first_response'],
diff --git a/erpnext/patches/v13_0/rename_issue_status_hold_to_on_hold.py b/erpnext/patches/v13_0/rename_issue_status_hold_to_on_hold.py
index 4ef04ad..1d245db 100644
--- a/erpnext/patches/v13_0/rename_issue_status_hold_to_on_hold.py
+++ b/erpnext/patches/v13_0/rename_issue_status_hold_to_on_hold.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	if frappe.db.exists('DocType', 'Issue'):
 		frappe.reload_doc("support", "doctype", "issue")
diff --git a/erpnext/patches/v13_0/rename_membership_settings_to_non_profit_settings.py b/erpnext/patches/v13_0/rename_membership_settings_to_non_profit_settings.py
index f60567b..23a782a 100644
--- a/erpnext/patches/v13_0/rename_membership_settings_to_non_profit_settings.py
+++ b/erpnext/patches/v13_0/rename_membership_settings_to_non_profit_settings.py
@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.utils.rename_field import rename_field
 
+
 def execute():
 	if frappe.db.table_exists("Membership Settings"):
 		frappe.rename_doc("DocType", "Membership Settings", "Non Profit Settings")
diff --git a/erpnext/patches/v13_0/rename_stop_to_send_birthday_reminders.py b/erpnext/patches/v13_0/rename_stop_to_send_birthday_reminders.py
index 014f026..813fbd2 100644
--- a/erpnext/patches/v13_0/rename_stop_to_send_birthday_reminders.py
+++ b/erpnext/patches/v13_0/rename_stop_to_send_birthday_reminders.py
@@ -1,6 +1,7 @@
 import frappe
 from frappe.model.utils.rename_field import rename_field
 
+
 def execute():
 	frappe.reload_doc('hr', 'doctype', 'hr_settings')
 
diff --git a/erpnext/patches/v13_0/replace_pos_page_with_point_of_sale_page.py b/erpnext/patches/v13_0/replace_pos_page_with_point_of_sale_page.py
index d8bcd7f..989f1a0 100644
--- a/erpnext/patches/v13_0/replace_pos_page_with_point_of_sale_page.py
+++ b/erpnext/patches/v13_0/replace_pos_page_with_point_of_sale_page.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	if frappe.db.exists("Page", "point-of-sale"):
 		frappe.rename_doc("Page", "pos", "point-of-sale", 1, 1)
diff --git a/erpnext/patches/v13_0/replace_pos_payment_mode_table.py b/erpnext/patches/v13_0/replace_pos_payment_mode_table.py
index bc1fc98..103c791 100644
--- a/erpnext/patches/v13_0/replace_pos_payment_mode_table.py
+++ b/erpnext/patches/v13_0/replace_pos_payment_mode_table.py
@@ -5,6 +5,7 @@
 
 import frappe
 
+
 def execute():
 	frappe.reload_doc("accounts", "doctype", "pos_payment_method")
 	pos_profiles = frappe.get_all("POS Profile")
diff --git a/erpnext/patches/v13_0/reset_clearance_date_for_intracompany_payment_entries.py b/erpnext/patches/v13_0/reset_clearance_date_for_intracompany_payment_entries.py
index 1caa17f..29343b7 100644
--- a/erpnext/patches/v13_0/reset_clearance_date_for_intracompany_payment_entries.py
+++ b/erpnext/patches/v13_0/reset_clearance_date_for_intracompany_payment_entries.py
@@ -5,6 +5,7 @@
 
 import frappe
 
+
 def execute():
     """
         Reset Clearance Date for Payment Entries of type Internal Transfer that have only been reconciled with one Bank Transaction.
diff --git a/erpnext/patches/v13_0/set_app_name.py b/erpnext/patches/v13_0/set_app_name.py
index 3f886f1..4a88442 100644
--- a/erpnext/patches/v13_0/set_app_name.py
+++ b/erpnext/patches/v13_0/set_app_name.py
@@ -1,5 +1,5 @@
 import frappe
-from frappe import _
+
 
 def execute():
 	frappe.reload_doctype("System Settings")
diff --git a/erpnext/patches/v13_0/set_company_field_in_healthcare_doctypes.py b/erpnext/patches/v13_0/set_company_field_in_healthcare_doctypes.py
index a5b93f6..e9396c2 100644
--- a/erpnext/patches/v13_0/set_company_field_in_healthcare_doctypes.py
+++ b/erpnext/patches/v13_0/set_company_field_in_healthcare_doctypes.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	company = frappe.db.get_single_value('Global Defaults', 'default_company')
 	doctypes = ['Clinical Procedure', 'Inpatient Record', 'Lab Test', 'Sample Collection', 'Patient Appointment', 'Patient Encounter', 'Vital Signs', 'Therapy Session', 'Therapy Plan', 'Patient Assessment']
diff --git a/erpnext/patches/v13_0/set_company_in_leave_ledger_entry.py b/erpnext/patches/v13_0/set_company_in_leave_ledger_entry.py
index 13ec41e..c744f35 100644
--- a/erpnext/patches/v13_0/set_company_in_leave_ledger_entry.py
+++ b/erpnext/patches/v13_0/set_company_in_leave_ledger_entry.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 	frappe.reload_doc('HR', 'doctype', 'Leave Allocation')
 	frappe.reload_doc('HR', 'doctype', 'Leave Ledger Entry')
diff --git a/erpnext/patches/v13_0/set_operation_time_based_on_operating_cost.py b/erpnext/patches/v13_0/set_operation_time_based_on_operating_cost.py
index 4fdd82f..e26285e 100644
--- a/erpnext/patches/v13_0/set_operation_time_based_on_operating_cost.py
+++ b/erpnext/patches/v13_0/set_operation_time_based_on_operating_cost.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 	frappe.reload_doc('manufacturing', 'doctype', 'bom')
 	frappe.reload_doc('manufacturing', 'doctype', 'bom_operation')
diff --git a/erpnext/patches/v13_0/set_payment_channel_in_payment_gateway_account.py b/erpnext/patches/v13_0/set_payment_channel_in_payment_gateway_account.py
index 7f75946..da889e6 100644
--- a/erpnext/patches/v13_0/set_payment_channel_in_payment_gateway_account.py
+++ b/erpnext/patches/v13_0/set_payment_channel_in_payment_gateway_account.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	"""Set the payment gateway account as Email for all the existing payment channel."""
 	doc_meta = frappe.get_meta("Payment Gateway Account")
diff --git a/erpnext/patches/v13_0/set_pos_closing_as_failed.py b/erpnext/patches/v13_0/set_pos_closing_as_failed.py
index 7968e74..8c7f508 100644
--- a/erpnext/patches/v13_0/set_pos_closing_as_failed.py
+++ b/erpnext/patches/v13_0/set_pos_closing_as_failed.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
     frappe.reload_doc('accounts', 'doctype', 'pos_closing_entry')
 
diff --git a/erpnext/patches/v13_0/set_training_event_attendance.py b/erpnext/patches/v13_0/set_training_event_attendance.py
index 3db183f..4e3d8f5 100644
--- a/erpnext/patches/v13_0/set_training_event_attendance.py
+++ b/erpnext/patches/v13_0/set_training_event_attendance.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
     frappe.reload_doc('hr', 'doctype', 'training_event')
     frappe.reload_doc('hr', 'doctype', 'training_event_employee')
diff --git a/erpnext/patches/v13_0/set_youtube_video_id.py b/erpnext/patches/v13_0/set_youtube_video_id.py
index f6104d1..1594e52 100644
--- a/erpnext/patches/v13_0/set_youtube_video_id.py
+++ b/erpnext/patches/v13_0/set_youtube_video_id.py
@@ -1,7 +1,10 @@
 from __future__ import unicode_literals
+
 import frappe
+
 from erpnext.utilities.doctype.video.video import get_id_from_url
 
+
 def execute():
 	frappe.reload_doc("utilities", "doctype","video")
 
diff --git a/erpnext/patches/v13_0/setting_custom_roles_for_some_regional_reports.py b/erpnext/patches/v13_0/setting_custom_roles_for_some_regional_reports.py
index c8c160f..a6a3ff3 100644
--- a/erpnext/patches/v13_0/setting_custom_roles_for_some_regional_reports.py
+++ b/erpnext/patches/v13_0/setting_custom_roles_for_some_regional_reports.py
@@ -1,7 +1,10 @@
 from __future__ import unicode_literals
+
 import frappe
+
 from erpnext.regional.india.setup import add_custom_roles_for_reports
 
+
 def execute():
     company = frappe.get_all('Company', filters = {'country': 'India'})
     if not company:
diff --git a/erpnext/patches/v13_0/setup_fields_for_80g_certificate_and_donation.py b/erpnext/patches/v13_0/setup_fields_for_80g_certificate_and_donation.py
index 833c355..7a2a253 100644
--- a/erpnext/patches/v13_0/setup_fields_for_80g_certificate_and_donation.py
+++ b/erpnext/patches/v13_0/setup_fields_for_80g_certificate_and_donation.py
@@ -1,6 +1,8 @@
 import frappe
+
 from erpnext.regional.india.setup import make_custom_fields
 
+
 def execute():
 	if frappe.get_all('Company', filters = {'country': 'India'}):
 		make_custom_fields()
diff --git a/erpnext/patches/v13_0/setup_gratuity_rule_for_india_and_uae.py b/erpnext/patches/v13_0/setup_gratuity_rule_for_india_and_uae.py
index 01fd6a1..01e75a6 100644
--- a/erpnext/patches/v13_0/setup_gratuity_rule_for_india_and_uae.py
+++ b/erpnext/patches/v13_0/setup_gratuity_rule_for_india_and_uae.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
     frappe.reload_doc('payroll', 'doctype', 'gratuity_rule')
     frappe.reload_doc('payroll', 'doctype', 'gratuity_rule_slab')
diff --git a/erpnext/patches/v13_0/setup_patient_history_settings_for_standard_doctypes.py b/erpnext/patches/v13_0/setup_patient_history_settings_for_standard_doctypes.py
index 83581dd..80622d4 100644
--- a/erpnext/patches/v13_0/setup_patient_history_settings_for_standard_doctypes.py
+++ b/erpnext/patches/v13_0/setup_patient_history_settings_for_standard_doctypes.py
@@ -1,7 +1,10 @@
 from __future__ import unicode_literals
+
 import frappe
+
 from erpnext.healthcare.setup import setup_patient_history_settings
 
+
 def execute():
 	if "Healthcare" not in frappe.get_active_domains():
 		return
diff --git a/erpnext/patches/v13_0/setup_uae_vat_fields.py b/erpnext/patches/v13_0/setup_uae_vat_fields.py
index 1830bab..d89e052 100644
--- a/erpnext/patches/v13_0/setup_uae_vat_fields.py
+++ b/erpnext/patches/v13_0/setup_uae_vat_fields.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 import frappe
+
 from erpnext.regional.united_arab_emirates.setup import setup
 
+
 def execute():
 	company = frappe.get_all('Company', filters = {'country': 'United Arab Emirates'})
 	if not company:
diff --git a/erpnext/patches/v13_0/shopify_deprecation_warning.py b/erpnext/patches/v13_0/shopify_deprecation_warning.py
index 6f199c8..245d1a9 100644
--- a/erpnext/patches/v13_0/shopify_deprecation_warning.py
+++ b/erpnext/patches/v13_0/shopify_deprecation_warning.py
@@ -1,5 +1,4 @@
 import click
-import frappe
 
 
 def execute():
diff --git a/erpnext/patches/v13_0/stock_entry_enhancements.py b/erpnext/patches/v13_0/stock_entry_enhancements.py
index 7b93ce3..5fcd6a3 100644
--- a/erpnext/patches/v13_0/stock_entry_enhancements.py
+++ b/erpnext/patches/v13_0/stock_entry_enhancements.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3.See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
     frappe.reload_doc("stock", "doctype", "stock_entry")
     if frappe.db.has_column("Stock Entry", "add_to_transit"):
diff --git a/erpnext/patches/v13_0/update_actual_start_and_end_date_in_wo.py b/erpnext/patches/v13_0/update_actual_start_and_end_date_in_wo.py
index 50f233d..dd87a53 100644
--- a/erpnext/patches/v13_0/update_actual_start_and_end_date_in_wo.py
+++ b/erpnext/patches/v13_0/update_actual_start_and_end_date_in_wo.py
@@ -7,6 +7,7 @@
 import frappe
 from frappe.utils import add_to_date
 
+
 def execute():
 	frappe.reload_doc("manufacturing", "doctype", "work_order")
 	frappe.reload_doc("manufacturing", "doctype", "work_order_item")
diff --git a/erpnext/patches/v13_0/update_amt_in_work_order_required_items.py b/erpnext/patches/v13_0/update_amt_in_work_order_required_items.py
index dc9ed18..dc973a9 100644
--- a/erpnext/patches/v13_0/update_amt_in_work_order_required_items.py
+++ b/erpnext/patches/v13_0/update_amt_in_work_order_required_items.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 	""" Correct amount in child table of required items table."""
 
diff --git a/erpnext/patches/v13_0/update_deferred_settings.py b/erpnext/patches/v13_0/update_deferred_settings.py
index bcc0952..5405931 100644
--- a/erpnext/patches/v13_0/update_deferred_settings.py
+++ b/erpnext/patches/v13_0/update_deferred_settings.py
@@ -1,8 +1,10 @@
 # Copyright (c) 2019, Frappe and Contributors
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	accounts_settings = frappe.get_doc('Accounts Settings', 'Accounts Settings')
 	accounts_settings.book_deferred_entries_based_on = 'Days'
diff --git a/erpnext/patches/v13_0/update_export_type_for_gst.py b/erpnext/patches/v13_0/update_export_type_for_gst.py
index ef70b55..de57861 100644
--- a/erpnext/patches/v13_0/update_export_type_for_gst.py
+++ b/erpnext/patches/v13_0/update_export_type_for_gst.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 	company = frappe.get_all('Company', filters = {'country': 'India'})
 	if not company:
diff --git a/erpnext/patches/v13_0/update_job_card_details.py b/erpnext/patches/v13_0/update_job_card_details.py
index 733b3a9..a0405e5 100644
--- a/erpnext/patches/v13_0/update_job_card_details.py
+++ b/erpnext/patches/v13_0/update_job_card_details.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc("manufacturing", "doctype", "job_card")
 	frappe.reload_doc("manufacturing", "doctype", "job_card_item")
diff --git a/erpnext/patches/v13_0/update_level_in_bom.py b/erpnext/patches/v13_0/update_level_in_bom.py
index 0d03c42..6223500 100644
--- a/erpnext/patches/v13_0/update_level_in_bom.py
+++ b/erpnext/patches/v13_0/update_level_in_bom.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	for document in ["bom", "bom_item", "bom_explosion_item"]:
 		frappe.reload_doc('manufacturing', 'doctype', document)
diff --git a/erpnext/patches/v13_0/update_member_email_address.py b/erpnext/patches/v13_0/update_member_email_address.py
index 4056f84..769658e 100644
--- a/erpnext/patches/v13_0/update_member_email_address.py
+++ b/erpnext/patches/v13_0/update_member_email_address.py
@@ -2,9 +2,11 @@
 # MIT License. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.utils.rename_field import rename_field
 
+
 def execute():
 	"""add value to email_id column from email"""
 
diff --git a/erpnext/patches/v13_0/update_old_loans.py b/erpnext/patches/v13_0/update_old_loans.py
index 8cf09aa..b01a877 100644
--- a/erpnext/patches/v13_0/update_old_loans.py
+++ b/erpnext/patches/v13_0/update_old_loans.py
@@ -1,12 +1,18 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import nowdate, flt
-from erpnext.accounts.doctype.account.test_account import create_account
-from erpnext.loan_management.doctype.process_loan_interest_accrual.process_loan_interest_accrual import process_loan_interest_accrual_for_term_loans
-from erpnext.loan_management.doctype.loan.loan import make_repayment_entry
-from erpnext.loan_management.doctype.loan_repayment.loan_repayment import get_accrued_interest_entries
 from frappe.model.naming import make_autoname
+from frappe.utils import flt, nowdate
+
+from erpnext.accounts.doctype.account.test_account import create_account
+from erpnext.loan_management.doctype.loan_repayment.loan_repayment import (
+	get_accrued_interest_entries,
+)
+from erpnext.loan_management.doctype.process_loan_interest_accrual.process_loan_interest_accrual import (
+	process_loan_interest_accrual_for_term_loans,
+)
+
 
 def execute():
 
diff --git a/erpnext/patches/v13_0/update_payment_terms_outstanding.py b/erpnext/patches/v13_0/update_payment_terms_outstanding.py
index 4816b40..c9e920b 100644
--- a/erpnext/patches/v13_0/update_payment_terms_outstanding.py
+++ b/erpnext/patches/v13_0/update_payment_terms_outstanding.py
@@ -2,8 +2,10 @@
 # MIT License. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc("accounts", "doctype", "Payment Schedule")
 	if frappe.db.count('Payment Schedule'):
diff --git a/erpnext/patches/v13_0/update_pos_closing_entry_in_merge_log.py b/erpnext/patches/v13_0/update_pos_closing_entry_in_merge_log.py
index 262e38d..71fe9ed 100644
--- a/erpnext/patches/v13_0/update_pos_closing_entry_in_merge_log.py
+++ b/erpnext/patches/v13_0/update_pos_closing_entry_in_merge_log.py
@@ -2,8 +2,10 @@
 # MIT License. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc("accounts", "doctype", "POS Invoice Merge Log")
 	frappe.reload_doc("accounts", "doctype", "POS Closing Entry")
diff --git a/erpnext/patches/v13_0/update_project_template_tasks.py b/erpnext/patches/v13_0/update_project_template_tasks.py
index b41b742..f0d0a5a 100644
--- a/erpnext/patches/v13_0/update_project_template_tasks.py
+++ b/erpnext/patches/v13_0/update_project_template_tasks.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc("projects", "doctype", "project_template")
 	frappe.reload_doc("projects", "doctype", "project_template_task")
diff --git a/erpnext/patches/v13_0/update_reason_for_resignation_in_employee.py b/erpnext/patches/v13_0/update_reason_for_resignation_in_employee.py
index ccdc334..8407502 100644
--- a/erpnext/patches/v13_0/update_reason_for_resignation_in_employee.py
+++ b/erpnext/patches/v13_0/update_reason_for_resignation_in_employee.py
@@ -2,8 +2,10 @@
 # MIT License. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
     frappe.reload_doc("hr", "doctype", "employee")
 
diff --git a/erpnext/patches/v13_0/update_recipient_email_digest.py b/erpnext/patches/v13_0/update_recipient_email_digest.py
index d9aa03f..f4a4810 100644
--- a/erpnext/patches/v13_0/update_recipient_email_digest.py
+++ b/erpnext/patches/v13_0/update_recipient_email_digest.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
     frappe.reload_doc("setup", "doctype", "Email Digest")
     frappe.reload_doc("setup", "doctype", "Email Digest Recipient")
diff --git a/erpnext/patches/v13_0/update_response_by_variance.py b/erpnext/patches/v13_0/update_response_by_variance.py
index ef4d976..444ec9e 100644
--- a/erpnext/patches/v13_0/update_response_by_variance.py
+++ b/erpnext/patches/v13_0/update_response_by_variance.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	if frappe.db.exists('DocType', 'Issue') and frappe.db.count('Issue'):
 		invalid_issues = frappe.get_all('Issue', {
diff --git a/erpnext/patches/v13_0/update_returned_qty_in_pr_dn.py b/erpnext/patches/v13_0/update_returned_qty_in_pr_dn.py
index a5769d2..efb3a59 100644
--- a/erpnext/patches/v13_0/update_returned_qty_in_pr_dn.py
+++ b/erpnext/patches/v13_0/update_returned_qty_in_pr_dn.py
@@ -1,8 +1,10 @@
 # Copyright (c) 2021, Frappe and Contributors
 # License: GNU General Public License v3. See license.txt
 import frappe
+
 from erpnext.controllers.status_updater import OverAllowanceError
 
+
 def execute():
 	frappe.reload_doc('stock', 'doctype', 'purchase_receipt')
 	frappe.reload_doc('stock', 'doctype', 'purchase_receipt_item')
diff --git a/erpnext/patches/v13_0/update_shipment_status.py b/erpnext/patches/v13_0/update_shipment_status.py
index c425599..f2d7d1d 100644
--- a/erpnext/patches/v13_0/update_shipment_status.py
+++ b/erpnext/patches/v13_0/update_shipment_status.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 	frappe.reload_doc("stock", "doctype", "shipment")
 
diff --git a/erpnext/patches/v13_0/update_sla_enhancements.py b/erpnext/patches/v13_0/update_sla_enhancements.py
index c156ba9..bcfbf8b 100644
--- a/erpnext/patches/v13_0/update_sla_enhancements.py
+++ b/erpnext/patches/v13_0/update_sla_enhancements.py
@@ -5,6 +5,7 @@
 
 import frappe
 
+
 def execute():
 	# add holiday list and employee group fields in SLA
 	# change response and resolution time in priorities child table
diff --git a/erpnext/patches/v13_0/update_start_end_date_for_old_shift_assignment.py b/erpnext/patches/v13_0/update_start_end_date_for_old_shift_assignment.py
index 0f521cb..bcdf72e 100644
--- a/erpnext/patches/v13_0/update_start_end_date_for_old_shift_assignment.py
+++ b/erpnext/patches/v13_0/update_start_end_date_for_old_shift_assignment.py
@@ -5,6 +5,7 @@
 
 import frappe
 
+
 def execute():
     frappe.reload_doc('hr', 'doctype', 'shift_assignment')
     if frappe.db.has_column('Shift Assignment', 'date'):
diff --git a/erpnext/patches/v13_0/update_subscription.py b/erpnext/patches/v13_0/update_subscription.py
index d25e9c8..e0ea78f 100644
--- a/erpnext/patches/v13_0/update_subscription.py
+++ b/erpnext/patches/v13_0/update_subscription.py
@@ -2,9 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from six import iteritems
 
+
 def execute():
 
 	frappe.reload_doc('accounts', 'doctype', 'subscription')
diff --git a/erpnext/patches/v13_0/update_subscription_status_in_memberships.py b/erpnext/patches/v13_0/update_subscription_status_in_memberships.py
index d9c3e45..e21fe57 100644
--- a/erpnext/patches/v13_0/update_subscription_status_in_memberships.py
+++ b/erpnext/patches/v13_0/update_subscription_status_in_memberships.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 	if frappe.db.exists('DocType', 'Member'):
 		frappe.reload_doc('Non Profit', 'doctype', 'Member')
diff --git a/erpnext/patches/v13_0/update_tds_check_field.py b/erpnext/patches/v13_0/update_tds_check_field.py
index 341b0e8..436d2e6 100644
--- a/erpnext/patches/v13_0/update_tds_check_field.py
+++ b/erpnext/patches/v13_0/update_tds_check_field.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 	if frappe.db.has_table("Tax Withholding Category") \
 		and frappe.db.has_column("Tax Withholding Category", "round_off_tax_amount"):
diff --git a/erpnext/patches/v13_0/update_timesheet_changes.py b/erpnext/patches/v13_0/update_timesheet_changes.py
index a36c84e..d993d54 100644
--- a/erpnext/patches/v13_0/update_timesheet_changes.py
+++ b/erpnext/patches/v13_0/update_timesheet_changes.py
@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.utils.rename_field import rename_field
 
+
 def execute():
 	frappe.reload_doc("projects", "doctype", "timesheet")
 	frappe.reload_doc("projects", "doctype", "timesheet_detail")
diff --git a/erpnext/patches/v13_0/updates_for_multi_currency_payroll.py b/erpnext/patches/v13_0/updates_for_multi_currency_payroll.py
index 7d344f9..c760a6a 100644
--- a/erpnext/patches/v13_0/updates_for_multi_currency_payroll.py
+++ b/erpnext/patches/v13_0/updates_for_multi_currency_payroll.py
@@ -5,6 +5,7 @@
 from frappe import _
 from frappe.model.utils.rename_field import rename_field
 
+
 def execute():
 
 	frappe.reload_doc('Accounts', 'doctype', 'Salary Component Account')
diff --git a/erpnext/patches/v13_0/validate_options_for_data_field.py b/erpnext/patches/v13_0/validate_options_for_data_field.py
index 03f9929..41a38fe 100644
--- a/erpnext/patches/v13_0/validate_options_for_data_field.py
+++ b/erpnext/patches/v13_0/validate_options_for_data_field.py
@@ -2,9 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model import data_field_options
 
+
 def execute():
 
     for field in frappe.get_all('Custom Field',
diff --git a/erpnext/patches/v14_0/delete_einvoicing_doctypes.py b/erpnext/patches/v14_0/delete_einvoicing_doctypes.py
index 6e5775b..a3a8149 100644
--- a/erpnext/patches/v14_0/delete_einvoicing_doctypes.py
+++ b/erpnext/patches/v14_0/delete_einvoicing_doctypes.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 	frappe.delete_doc('DocType', 'E Invoice Settings', ignore_missing=True)
 	frappe.delete_doc('DocType', 'E Invoice User', ignore_missing=True)
diff --git a/erpnext/patches/v4_2/repost_reserved_qty.py b/erpnext/patches/v4_2/repost_reserved_qty.py
index 36117aa..4fa3b46 100644
--- a/erpnext/patches/v4_2/repost_reserved_qty.py
+++ b/erpnext/patches/v4_2/repost_reserved_qty.py
@@ -2,8 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from erpnext.stock.stock_balance import update_bin_qty, get_reserved_qty
+
+from erpnext.stock.stock_balance import get_reserved_qty, update_bin_qty
+
 
 def execute():
 	for doctype in ("Sales Order Item", "Bin"):
diff --git a/erpnext/patches/v4_2/update_requested_and_ordered_qty.py b/erpnext/patches/v4_2/update_requested_and_ordered_qty.py
index 8a31c73..9330a44 100644
--- a/erpnext/patches/v4_2/update_requested_and_ordered_qty.py
+++ b/erpnext/patches/v4_2/update_requested_and_ordered_qty.py
@@ -2,10 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
-	from erpnext.stock.stock_balance import update_bin_qty, get_indented_qty, get_ordered_qty
+	from erpnext.stock.stock_balance import get_indented_qty, get_ordered_qty, update_bin_qty
 
 	count=0
 	for item_code, warehouse in frappe.db.sql("""select distinct item_code, warehouse from
diff --git a/erpnext/patches/v5_7/update_item_description_based_on_item_master.py b/erpnext/patches/v5_7/update_item_description_based_on_item_master.py
index 2045358..82b5b1c 100644
--- a/erpnext/patches/v5_7/update_item_description_based_on_item_master.py
+++ b/erpnext/patches/v5_7/update_item_description_based_on_item_master.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	name = frappe.db.sql(""" select name from `tabPatch Log` \
 		where \
diff --git a/erpnext/patches/v8_1/removed_roles_from_gst_report_non_indian_account.py b/erpnext/patches/v8_1/removed_roles_from_gst_report_non_indian_account.py
index 55f5f82..ecfdc41 100644
--- a/erpnext/patches/v8_1/removed_roles_from_gst_report_non_indian_account.py
+++ b/erpnext/patches/v8_1/removed_roles_from_gst_report_non_indian_account.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute():
 	frappe.reload_doc('core', 'doctype', 'has_role')
 	company = frappe.get_all('Company', filters = {'country': 'India'})
diff --git a/erpnext/patches/v8_1/setup_gst_india.py b/erpnext/patches/v8_1/setup_gst_india.py
index c214990..140b226 100644
--- a/erpnext/patches/v8_1/setup_gst_india.py
+++ b/erpnext/patches/v8_1/setup_gst_india.py
@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe.email import sendmail_to_system_managers
 
+
 def execute():
 	frappe.reload_doc('stock', 'doctype', 'item')
 	frappe.reload_doc("stock", "doctype", "customs_tariff_number")
diff --git a/erpnext/patches/v8_7/sync_india_custom_fields.py b/erpnext/patches/v8_7/sync_india_custom_fields.py
index eb24a90..65ec14e 100644
--- a/erpnext/patches/v8_7/sync_india_custom_fields.py
+++ b/erpnext/patches/v8_7/sync_india_custom_fields.py
@@ -1,6 +1,9 @@
 from __future__ import unicode_literals
+
 import frappe
-from erpnext.regional.india.setup  import make_custom_fields
+
+from erpnext.regional.india.setup import make_custom_fields
+
 
 def execute():
 	company = frappe.get_all('Company', filters = {'country': 'India'})
diff --git a/erpnext/payroll/doctype/additional_salary/additional_salary.py b/erpnext/payroll/doctype/additional_salary/additional_salary.py
index 381f399..ed10f2b 100644
--- a/erpnext/payroll/doctype/additional_salary/additional_salary.py
+++ b/erpnext/payroll/doctype/additional_salary/additional_salary.py
@@ -3,12 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.document import Document
 from frappe import _, bold
-from frappe.utils import getdate, date_diff, comma_and, formatdate
+from frappe.model.document import Document
+from frappe.utils import comma_and, date_diff, formatdate, getdate
+
 from erpnext.hr.utils import validate_active_employee
 
+
 class AdditionalSalary(Document):
 	def on_submit(self):
 		if self.ref_doctype == "Employee Advance" and self.ref_docname:
diff --git a/erpnext/payroll/doctype/additional_salary/test_additional_salary.py b/erpnext/payroll/doctype/additional_salary/test_additional_salary.py
index 2a9c561..2ad4afe 100644
--- a/erpnext/payroll/doctype/additional_salary/test_additional_salary.py
+++ b/erpnext/payroll/doctype/additional_salary/test_additional_salary.py
@@ -2,12 +2,19 @@
 # Copyright (c) 2018, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
-import frappe, erpnext
-from frappe.utils import nowdate, add_days
+
+import frappe
+from frappe.utils import add_days, nowdate
+
+import erpnext
 from erpnext.hr.doctype.employee.test_employee import make_employee
 from erpnext.payroll.doctype.salary_component.test_salary_component import create_salary_component
-from erpnext.payroll.doctype.salary_slip.test_salary_slip import make_employee_salary_slip, setup_test
+from erpnext.payroll.doctype.salary_slip.test_salary_slip import (
+	make_employee_salary_slip,
+	setup_test,
+)
 from erpnext.payroll.doctype.salary_structure.test_salary_structure import make_salary_structure
 
 
diff --git a/erpnext/payroll/doctype/employee_benefit_application/employee_benefit_application.py b/erpnext/payroll/doctype/employee_benefit_application/employee_benefit_application.py
index a1cde08..9983f01 100644
--- a/erpnext/payroll/doctype/employee_benefit_application/employee_benefit_application.py
+++ b/erpnext/payroll/doctype/employee_benefit_application/employee_benefit_application.py
@@ -3,13 +3,26 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import date_diff, getdate, rounded, add_days, cstr, cint, flt
 from frappe.model.document import Document
-from erpnext.payroll.doctype.payroll_period.payroll_period import get_payroll_period_days, get_period_factor
-from erpnext.payroll.doctype.salary_structure_assignment.salary_structure_assignment import get_assigned_salary_structure
-from erpnext.hr.utils import get_sal_slip_total_benefit_given, get_holiday_dates_for_employee, get_previous_claimed_amount, validate_active_employee
+from frappe.utils import add_days, cint, cstr, date_diff, getdate, rounded
+
+from erpnext.hr.utils import (
+	get_holiday_dates_for_employee,
+	get_previous_claimed_amount,
+	get_sal_slip_total_benefit_given,
+	validate_active_employee,
+)
+from erpnext.payroll.doctype.payroll_period.payroll_period import (
+	get_payroll_period_days,
+	get_period_factor,
+)
+from erpnext.payroll.doctype.salary_structure_assignment.salary_structure_assignment import (
+	get_assigned_salary_structure,
+)
+
 
 class EmployeeBenefitApplication(Document):
 	def validate(self):
diff --git a/erpnext/payroll/doctype/employee_benefit_application/test_employee_benefit_application.py b/erpnext/payroll/doctype/employee_benefit_application/test_employee_benefit_application.py
index 34e1a8f..ea05e0e 100644
--- a/erpnext/payroll/doctype/employee_benefit_application/test_employee_benefit_application.py
+++ b/erpnext/payroll/doctype/employee_benefit_application/test_employee_benefit_application.py
@@ -2,7 +2,9 @@
 # Copyright (c) 2018, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
 
+
 class TestEmployeeBenefitApplication(unittest.TestCase):
 	pass
diff --git a/erpnext/payroll/doctype/employee_benefit_application_detail/employee_benefit_application_detail.py b/erpnext/payroll/doctype/employee_benefit_application_detail/employee_benefit_application_detail.py
index 65405fe..ddcbaa2 100644
--- a/erpnext/payroll/doctype/employee_benefit_application_detail/employee_benefit_application_detail.py
+++ b/erpnext/payroll/doctype/employee_benefit_application_detail/employee_benefit_application_detail.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class EmployeeBenefitApplicationDetail(Document):
 	pass
diff --git a/erpnext/payroll/doctype/employee_benefit_claim/employee_benefit_claim.py b/erpnext/payroll/doctype/employee_benefit_claim/employee_benefit_claim.py
index c6713f3..7898e04 100644
--- a/erpnext/payroll/doctype/employee_benefit_claim/employee_benefit_claim.py
+++ b/erpnext/payroll/doctype/employee_benefit_claim/employee_benefit_claim.py
@@ -3,14 +3,21 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import flt
 from frappe.model.document import Document
-from erpnext.payroll.doctype.employee_benefit_application.employee_benefit_application import get_max_benefits
+from frappe.utils import flt
+
 from erpnext.hr.utils import get_previous_claimed_amount, validate_active_employee
+from erpnext.payroll.doctype.employee_benefit_application.employee_benefit_application import (
+	get_max_benefits,
+)
 from erpnext.payroll.doctype.payroll_period.payroll_period import get_payroll_period
-from erpnext.payroll.doctype.salary_structure_assignment.salary_structure_assignment import get_assigned_salary_structure
+from erpnext.payroll.doctype.salary_structure_assignment.salary_structure_assignment import (
+	get_assigned_salary_structure,
+)
+
 
 class EmployeeBenefitClaim(Document):
 	def validate(self):
diff --git a/erpnext/payroll/doctype/employee_benefit_claim/test_employee_benefit_claim.py b/erpnext/payroll/doctype/employee_benefit_claim/test_employee_benefit_claim.py
index aff73e5..f3f2229 100644
--- a/erpnext/payroll/doctype/employee_benefit_claim/test_employee_benefit_claim.py
+++ b/erpnext/payroll/doctype/employee_benefit_claim/test_employee_benefit_claim.py
@@ -2,7 +2,9 @@
 # Copyright (c) 2018, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
 import unittest
 
+
 class TestEmployeeBenefitClaim(unittest.TestCase):
 	pass
diff --git a/erpnext/payroll/doctype/employee_incentive/employee_incentive.py b/erpnext/payroll/doctype/employee_incentive/employee_incentive.py
index 6b918ba..74d0736 100644
--- a/erpnext/payroll/doctype/employee_incentive/employee_incentive.py
+++ b/erpnext/payroll/doctype/employee_incentive/employee_incentive.py
@@ -3,11 +3,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
+
 from erpnext.hr.utils import validate_active_employee
 
+
 class EmployeeIncentive(Document):
 	def validate(self):
 		validate_active_employee(self.employee)
diff --git a/erpnext/payroll/doctype/employee_incentive/test_employee_incentive.py b/erpnext/payroll/doctype/employee_incentive/test_employee_incentive.py
index f7597ad..3c95fa8 100644
--- a/erpnext/payroll/doctype/employee_incentive/test_employee_incentive.py
+++ b/erpnext/payroll/doctype/employee_incentive/test_employee_incentive.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestEmployeeIncentive(unittest.TestCase):
 	pass
diff --git a/erpnext/payroll/doctype/employee_other_income/employee_other_income.py b/erpnext/payroll/doctype/employee_other_income/employee_other_income.py
index ab63c0d..73a0321 100644
--- a/erpnext/payroll/doctype/employee_other_income/employee_other_income.py
+++ b/erpnext/payroll/doctype/employee_other_income/employee_other_income.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class EmployeeOtherIncome(Document):
 	pass
diff --git a/erpnext/payroll/doctype/employee_other_income/test_employee_other_income.py b/erpnext/payroll/doctype/employee_other_income/test_employee_other_income.py
index 2eeca7a..5b735b3 100644
--- a/erpnext/payroll/doctype/employee_other_income/test_employee_other_income.py
+++ b/erpnext/payroll/doctype/employee_other_income/test_employee_other_income.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestEmployeeOtherIncome(unittest.TestCase):
 	pass
diff --git a/erpnext/payroll/doctype/employee_tax_exemption_category/employee_tax_exemption_category.py b/erpnext/payroll/doctype/employee_tax_exemption_category/employee_tax_exemption_category.py
index 4f705db..f88f551 100644
--- a/erpnext/payroll/doctype/employee_tax_exemption_category/employee_tax_exemption_category.py
+++ b/erpnext/payroll/doctype/employee_tax_exemption_category/employee_tax_exemption_category.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class EmployeeTaxExemptionCategory(Document):
 	pass
diff --git a/erpnext/payroll/doctype/employee_tax_exemption_category/test_employee_tax_exemption_category.py b/erpnext/payroll/doctype/employee_tax_exemption_category/test_employee_tax_exemption_category.py
index 669fb71..e6bc3ab 100644
--- a/erpnext/payroll/doctype/employee_tax_exemption_category/test_employee_tax_exemption_category.py
+++ b/erpnext/payroll/doctype/employee_tax_exemption_category/test_employee_tax_exemption_category.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestEmployeeTaxExemptionCategory(unittest.TestCase):
 	pass
diff --git a/erpnext/payroll/doctype/employee_tax_exemption_declaration/employee_tax_exemption_declaration.py b/erpnext/payroll/doctype/employee_tax_exemption_declaration/employee_tax_exemption_declaration.py
index e11d60a..099ab0d 100644
--- a/erpnext/payroll/doctype/employee_tax_exemption_declaration/employee_tax_exemption_declaration.py
+++ b/erpnext/payroll/doctype/employee_tax_exemption_declaration/employee_tax_exemption_declaration.py
@@ -3,13 +3,20 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
-from frappe import _
-from frappe.utils import flt
 from frappe.model.mapper import get_mapped_doc
-from erpnext.hr.utils import validate_tax_declaration, get_total_exemption_amount, validate_active_employee, \
-	calculate_annual_eligible_hra_exemption, validate_duplicate_exemption_for_payroll_period
+from frappe.utils import flt
+
+from erpnext.hr.utils import (
+	calculate_annual_eligible_hra_exemption,
+	get_total_exemption_amount,
+	validate_active_employee,
+	validate_duplicate_exemption_for_payroll_period,
+	validate_tax_declaration,
+)
+
 
 class EmployeeTaxExemptionDeclaration(Document):
 	def validate(self):
diff --git a/erpnext/payroll/doctype/employee_tax_exemption_declaration/test_employee_tax_exemption_declaration.py b/erpnext/payroll/doctype/employee_tax_exemption_declaration/test_employee_tax_exemption_declaration.py
index 311f352..b7154a4 100644
--- a/erpnext/payroll/doctype/employee_tax_exemption_declaration/test_employee_tax_exemption_declaration.py
+++ b/erpnext/payroll/doctype/employee_tax_exemption_declaration/test_employee_tax_exemption_declaration.py
@@ -3,11 +3,15 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe, erpnext
 import unittest
+
+import frappe
+
+import erpnext
 from erpnext.hr.doctype.employee.test_employee import make_employee
 from erpnext.hr.utils import DuplicateDeclarationError
 
+
 class TestEmployeeTaxExemptionDeclaration(unittest.TestCase):
 	def setUp(self):
 		make_employee("employee@taxexepmtion.com")
diff --git a/erpnext/payroll/doctype/employee_tax_exemption_declaration_category/employee_tax_exemption_declaration_category.py b/erpnext/payroll/doctype/employee_tax_exemption_declaration_category/employee_tax_exemption_declaration_category.py
index bff747f..2923e57 100644
--- a/erpnext/payroll/doctype/employee_tax_exemption_declaration_category/employee_tax_exemption_declaration_category.py
+++ b/erpnext/payroll/doctype/employee_tax_exemption_declaration_category/employee_tax_exemption_declaration_category.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class EmployeeTaxExemptionDeclarationCategory(Document):
 	pass
diff --git a/erpnext/payroll/doctype/employee_tax_exemption_proof_submission/employee_tax_exemption_proof_submission.py b/erpnext/payroll/doctype/employee_tax_exemption_proof_submission/employee_tax_exemption_proof_submission.py
index 8131ae0..f35fd3c 100644
--- a/erpnext/payroll/doctype/employee_tax_exemption_proof_submission/employee_tax_exemption_proof_submission.py
+++ b/erpnext/payroll/doctype/employee_tax_exemption_proof_submission/employee_tax_exemption_proof_submission.py
@@ -3,12 +3,18 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
-from frappe import _
 from frappe.utils import flt
-from erpnext.hr.utils import validate_tax_declaration, get_total_exemption_amount, validate_active_employee, \
-	calculate_hra_exemption_for_period, validate_duplicate_exemption_for_payroll_period
+
+from erpnext.hr.utils import (
+	calculate_hra_exemption_for_period,
+	get_total_exemption_amount,
+	validate_active_employee,
+	validate_duplicate_exemption_for_payroll_period,
+	validate_tax_declaration,
+)
+
 
 class EmployeeTaxExemptionProofSubmission(Document):
 	def validate(self):
diff --git a/erpnext/payroll/doctype/employee_tax_exemption_proof_submission/test_employee_tax_exemption_proof_submission.py b/erpnext/payroll/doctype/employee_tax_exemption_proof_submission/test_employee_tax_exemption_proof_submission.py
index cb9ed5f..aafc0a1 100644
--- a/erpnext/payroll/doctype/employee_tax_exemption_proof_submission/test_employee_tax_exemption_proof_submission.py
+++ b/erpnext/payroll/doctype/employee_tax_exemption_proof_submission/test_employee_tax_exemption_proof_submission.py
@@ -3,9 +3,15 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from erpnext.payroll.doctype.employee_tax_exemption_declaration.test_employee_tax_exemption_declaration import create_exemption_category, create_payroll_period
+
+import frappe
+
+from erpnext.payroll.doctype.employee_tax_exemption_declaration.test_employee_tax_exemption_declaration import (
+	create_exemption_category,
+	create_payroll_period,
+)
+
 
 class TestEmployeeTaxExemptionProofSubmission(unittest.TestCase):
 	def setup(self):
diff --git a/erpnext/payroll/doctype/employee_tax_exemption_proof_submission_detail/employee_tax_exemption_proof_submission_detail.py b/erpnext/payroll/doctype/employee_tax_exemption_proof_submission_detail/employee_tax_exemption_proof_submission_detail.py
index 0244ae6..e0a11ae 100644
--- a/erpnext/payroll/doctype/employee_tax_exemption_proof_submission_detail/employee_tax_exemption_proof_submission_detail.py
+++ b/erpnext/payroll/doctype/employee_tax_exemption_proof_submission_detail/employee_tax_exemption_proof_submission_detail.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class EmployeeTaxExemptionProofSubmissionDetail(Document):
 	pass
diff --git a/erpnext/payroll/doctype/employee_tax_exemption_sub_category/employee_tax_exemption_sub_category.py b/erpnext/payroll/doctype/employee_tax_exemption_sub_category/employee_tax_exemption_sub_category.py
index d3f24c9..5948ef2 100644
--- a/erpnext/payroll/doctype/employee_tax_exemption_sub_category/employee_tax_exemption_sub_category.py
+++ b/erpnext/payroll/doctype/employee_tax_exemption_sub_category/employee_tax_exemption_sub_category.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import flt
 from frappe.model.document import Document
+from frappe.utils import flt
+
 
 class EmployeeTaxExemptionSubCategory(Document):
 	def validate(self):
diff --git a/erpnext/payroll/doctype/employee_tax_exemption_sub_category/test_employee_tax_exemption_sub_category.py b/erpnext/payroll/doctype/employee_tax_exemption_sub_category/test_employee_tax_exemption_sub_category.py
index 5d705567..0086086 100644
--- a/erpnext/payroll/doctype/employee_tax_exemption_sub_category/test_employee_tax_exemption_sub_category.py
+++ b/erpnext/payroll/doctype/employee_tax_exemption_sub_category/test_employee_tax_exemption_sub_category.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestEmployeeTaxExemptionSubCategory(unittest.TestCase):
 	pass
diff --git a/erpnext/payroll/doctype/gratuity/gratuity.py b/erpnext/payroll/doctype/gratuity/gratuity.py
index 8217bc3..cc28dc4 100644
--- a/erpnext/payroll/doctype/gratuity/gratuity.py
+++ b/erpnext/payroll/doctype/gratuity/gratuity.py
@@ -3,12 +3,16 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
+from math import floor
+
 import frappe
 from frappe import _, bold
 from frappe.utils import flt, get_datetime, get_link_to_form
+
 from erpnext.accounts.general_ledger import make_gl_entries
 from erpnext.controllers.accounts_controller import AccountsController
-from math import floor
+
 
 class Gratuity(AccountsController):
 	def validate(self):
diff --git a/erpnext/payroll/doctype/gratuity/gratuity_dashboard.py b/erpnext/payroll/doctype/gratuity/gratuity_dashboard.py
index 23c99b1..1599fc2 100644
--- a/erpnext/payroll/doctype/gratuity/gratuity_dashboard.py
+++ b/erpnext/payroll/doctype/gratuity/gratuity_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'reference_name',
diff --git a/erpnext/payroll/doctype/gratuity/test_gratuity.py b/erpnext/payroll/doctype/gratuity/test_gratuity.py
index 8cb4728..1403e9b 100644
--- a/erpnext/payroll/doctype/gratuity/test_gratuity.py
+++ b/erpnext/payroll/doctype/gratuity/test_gratuity.py
@@ -3,15 +3,20 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
+import frappe
+from frappe.utils import add_days, flt, get_datetime, getdate
+
 from erpnext.hr.doctype.employee.test_employee import make_employee
-from erpnext.payroll.doctype.salary_slip.test_salary_slip import make_employee_salary_slip, make_earning_salary_component, \
-	make_deduction_salary_component
-from erpnext.payroll.doctype.gratuity.gratuity import get_last_salary_slip
-from erpnext.regional.united_arab_emirates.setup import create_gratuity_rule
 from erpnext.hr.doctype.expense_claim.test_expense_claim import get_payable_account
-from frappe.utils import getdate, add_days, get_datetime, flt
+from erpnext.payroll.doctype.gratuity.gratuity import get_last_salary_slip
+from erpnext.payroll.doctype.salary_slip.test_salary_slip import (
+	make_deduction_salary_component,
+	make_earning_salary_component,
+	make_employee_salary_slip,
+)
+from erpnext.regional.united_arab_emirates.setup import create_gratuity_rule
 
 test_dependencies = ["Salary Component", "Salary Slip", "Account"]
 class TestGratuity(unittest.TestCase):
diff --git a/erpnext/payroll/doctype/gratuity_applicable_component/gratuity_applicable_component.py b/erpnext/payroll/doctype/gratuity_applicable_component/gratuity_applicable_component.py
index 23e4340..d76b26d 100644
--- a/erpnext/payroll/doctype/gratuity_applicable_component/gratuity_applicable_component.py
+++ b/erpnext/payroll/doctype/gratuity_applicable_component/gratuity_applicable_component.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class GratuityApplicableComponent(Document):
 	pass
diff --git a/erpnext/payroll/doctype/gratuity_rule/gratuity_rule.py b/erpnext/payroll/doctype/gratuity_rule/gratuity_rule.py
index 29a6ebe..28159bb 100644
--- a/erpnext/payroll/doctype/gratuity_rule/gratuity_rule.py
+++ b/erpnext/payroll/doctype/gratuity_rule/gratuity_rule.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.document import Document
 from frappe import _
+from frappe.model.document import Document
+
 
 class GratuityRule(Document):
 
diff --git a/erpnext/payroll/doctype/gratuity_rule/gratuity_rule_dashboard.py b/erpnext/payroll/doctype/gratuity_rule/gratuity_rule_dashboard.py
index 0f27315..60dcfa4 100644
--- a/erpnext/payroll/doctype/gratuity_rule/gratuity_rule_dashboard.py
+++ b/erpnext/payroll/doctype/gratuity_rule/gratuity_rule_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'gratuity_rule',
diff --git a/erpnext/payroll/doctype/gratuity_rule/test_gratuity_rule.py b/erpnext/payroll/doctype/gratuity_rule/test_gratuity_rule.py
index 1f5dc4e..c81d7b7 100644
--- a/erpnext/payroll/doctype/gratuity_rule/test_gratuity_rule.py
+++ b/erpnext/payroll/doctype/gratuity_rule/test_gratuity_rule.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestGratuityRule(unittest.TestCase):
 	pass
diff --git a/erpnext/payroll/doctype/gratuity_rule_slab/gratuity_rule_slab.py b/erpnext/payroll/doctype/gratuity_rule_slab/gratuity_rule_slab.py
index fa468e7..dcd7e46 100644
--- a/erpnext/payroll/doctype/gratuity_rule_slab/gratuity_rule_slab.py
+++ b/erpnext/payroll/doctype/gratuity_rule_slab/gratuity_rule_slab.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class GratuityRuleSlab(Document):
 	pass
diff --git a/erpnext/payroll/doctype/income_tax_slab/income_tax_slab.py b/erpnext/payroll/doctype/income_tax_slab/income_tax_slab.py
index 81e3647..f778fd9 100644
--- a/erpnext/payroll/doctype/income_tax_slab/income_tax_slab.py
+++ b/erpnext/payroll/doctype/income_tax_slab/income_tax_slab.py
@@ -3,9 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
+from frappe.model.document import Document
+
 #import frappe
 import erpnext
-from frappe.model.document import Document
+
 
 class IncomeTaxSlab(Document):
 	def validate(self):
diff --git a/erpnext/payroll/doctype/income_tax_slab/test_income_tax_slab.py b/erpnext/payroll/doctype/income_tax_slab/test_income_tax_slab.py
index deaaf65..d762990 100644
--- a/erpnext/payroll/doctype/income_tax_slab/test_income_tax_slab.py
+++ b/erpnext/payroll/doctype/income_tax_slab/test_income_tax_slab.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestIncomeTaxSlab(unittest.TestCase):
 	pass
diff --git a/erpnext/payroll/doctype/income_tax_slab_other_charges/income_tax_slab_other_charges.py b/erpnext/payroll/doctype/income_tax_slab_other_charges/income_tax_slab_other_charges.py
index b4098ec..3314677 100644
--- a/erpnext/payroll/doctype/income_tax_slab_other_charges/income_tax_slab_other_charges.py
+++ b/erpnext/payroll/doctype/income_tax_slab_other_charges/income_tax_slab_other_charges.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class IncomeTaxSlabOtherCharges(Document):
 	pass
diff --git a/erpnext/payroll/doctype/payroll_employee_detail/payroll_employee_detail.py b/erpnext/payroll/doctype/payroll_employee_detail/payroll_employee_detail.py
index aeb11fd..074d223 100644
--- a/erpnext/payroll/doctype/payroll_employee_detail/payroll_employee_detail.py
+++ b/erpnext/payroll/doctype/payroll_employee_detail/payroll_employee_detail.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class PayrollEmployeeDetail(Document):
 	pass
diff --git a/erpnext/payroll/doctype/payroll_entry/payroll_entry.py b/erpnext/payroll/doctype/payroll_entry/payroll_entry.py
index 13cc423..f1557c7 100644
--- a/erpnext/payroll/doctype/payroll_entry/payroll_entry.py
+++ b/erpnext/payroll/doctype/payroll_entry/payroll_entry.py
@@ -3,15 +3,30 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
-from frappe.model.document import Document
+
+import frappe
 from dateutil.relativedelta import relativedelta
-from frappe.utils import cint, flt, add_days, getdate, add_to_date, DATE_FORMAT, date_diff, comma_and
 from frappe import _
+from frappe.desk.reportview import get_filters_cond, get_match_cond
+from frappe.model.document import Document
+from frappe.utils import (
+	DATE_FORMAT,
+	add_days,
+	add_to_date,
+	cint,
+	comma_and,
+	date_diff,
+	flt,
+	getdate,
+)
+
+import erpnext
+from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import (
+	get_accounting_dimensions,
+)
 from erpnext.accounts.utils import get_fiscal_year
 from erpnext.hr.doctype.employee.employee import get_holiday_list_for_employee
-from frappe.desk.reportview import get_match_cond, get_filters_cond
-from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import get_accounting_dimensions
+
 
 class PayrollEntry(Document):
 	def onload(self):
@@ -529,7 +544,8 @@
 def get_month_details(year, month):
 	ysd = frappe.db.get_value("Fiscal Year", year, "year_start_date")
 	if ysd:
-		import calendar, datetime
+		import calendar
+		import datetime
 		diff_mnt = cint(month)-cint(ysd.month)
 		if diff_mnt<0:
 			diff_mnt = 12-int(ysd.month)+cint(month)
diff --git a/erpnext/payroll/doctype/payroll_entry/payroll_entry_dashboard.py b/erpnext/payroll/doctype/payroll_entry/payroll_entry_dashboard.py
index 0346a7c..16e44d0 100644
--- a/erpnext/payroll/doctype/payroll_entry/payroll_entry_dashboard.py
+++ b/erpnext/payroll/doctype/payroll_entry/payroll_entry_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
 	return {
diff --git a/erpnext/payroll/doctype/payroll_entry/test_payroll_entry.py b/erpnext/payroll/doctype/payroll_entry/test_payroll_entry.py
index b80b320..dd0e127 100644
--- a/erpnext/payroll/doctype/payroll_entry/test_payroll_entry.py
+++ b/erpnext/payroll/doctype/payroll_entry/test_payroll_entry.py
@@ -1,19 +1,37 @@
 # Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
+
 import unittest
-import erpnext
+
 import frappe
 from dateutil.relativedelta import relativedelta
-from erpnext.accounts.utils import get_fiscal_year, getdate, nowdate
 from frappe.utils import add_months
-from erpnext.payroll.doctype.payroll_entry.payroll_entry import get_start_end_dates, get_end_date
+
+import erpnext
+from erpnext.accounts.utils import get_fiscal_year, getdate, nowdate
 from erpnext.hr.doctype.employee.test_employee import make_employee
-from erpnext.payroll.doctype.salary_slip.test_salary_slip import get_salary_component_account, \
-		make_earning_salary_component, make_deduction_salary_component, create_account, make_employee_salary_slip
-from erpnext.payroll.doctype.salary_structure.test_salary_structure import make_salary_structure, create_salary_structure_assignment
-from erpnext.loan_management.doctype.loan.test_loan import create_loan, make_loan_disbursement_entry, create_loan_type, create_loan_accounts
-from erpnext.loan_management.doctype.process_loan_interest_accrual.process_loan_interest_accrual import process_loan_interest_accrual_for_term_loans
+from erpnext.loan_management.doctype.loan.test_loan import (
+	create_loan,
+	create_loan_accounts,
+	create_loan_type,
+	make_loan_disbursement_entry,
+)
+from erpnext.loan_management.doctype.process_loan_interest_accrual.process_loan_interest_accrual import (
+	process_loan_interest_accrual_for_term_loans,
+)
+from erpnext.payroll.doctype.payroll_entry.payroll_entry import get_end_date, get_start_end_dates
+from erpnext.payroll.doctype.salary_slip.test_salary_slip import (
+	create_account,
+	get_salary_component_account,
+	make_deduction_salary_component,
+	make_earning_salary_component,
+	make_employee_salary_slip,
+)
+from erpnext.payroll.doctype.salary_structure.test_salary_structure import (
+	create_salary_structure_assignment,
+	make_salary_structure,
+)
 
 test_dependencies = ['Holiday List']
 
diff --git a/erpnext/payroll/doctype/payroll_period/payroll_period.py b/erpnext/payroll/doctype/payroll_period/payroll_period.py
index 66dec07..0de8d63 100644
--- a/erpnext/payroll/doctype/payroll_period/payroll_period.py
+++ b/erpnext/payroll/doctype/payroll_period/payroll_period.py
@@ -3,12 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import date_diff, getdate, formatdate, cint, month_diff, flt, add_months
 from frappe.model.document import Document
+from frappe.utils import add_months, cint, date_diff, flt, formatdate, getdate, month_diff
+
 from erpnext.hr.utils import get_holiday_dates_for_employee
 
+
 class PayrollPeriod(Document):
 	def validate(self):
 		self.validate_dates()
diff --git a/erpnext/payroll/doctype/payroll_period/payroll_period_dashboard.py b/erpnext/payroll/doctype/payroll_period/payroll_period_dashboard.py
index e332995..4105d8e 100644
--- a/erpnext/payroll/doctype/payroll_period/payroll_period_dashboard.py
+++ b/erpnext/payroll/doctype/payroll_period/payroll_period_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
      return {
diff --git a/erpnext/payroll/doctype/payroll_period/test_payroll_period.py b/erpnext/payroll/doctype/payroll_period/test_payroll_period.py
index d06dc73..e93c0e5 100644
--- a/erpnext/payroll/doctype/payroll_period/test_payroll_period.py
+++ b/erpnext/payroll/doctype/payroll_period/test_payroll_period.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestPayrollPeriod(unittest.TestCase):
 	pass
diff --git a/erpnext/payroll/doctype/payroll_period_date/payroll_period_date.py b/erpnext/payroll/doctype/payroll_period_date/payroll_period_date.py
index a3ee269..fa6835d 100644
--- a/erpnext/payroll/doctype/payroll_period_date/payroll_period_date.py
+++ b/erpnext/payroll/doctype/payroll_period_date/payroll_period_date.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class PayrollPeriodDate(Document):
 	pass
diff --git a/erpnext/payroll/doctype/payroll_settings/payroll_settings.py b/erpnext/payroll/doctype/payroll_settings/payroll_settings.py
index 459b7ea..b85d554 100644
--- a/erpnext/payroll/doctype/payroll_settings/payroll_settings.py
+++ b/erpnext/payroll/doctype/payroll_settings/payroll_settings.py
@@ -3,11 +3,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
+from frappe import _
+from frappe.custom.doctype.property_setter.property_setter import make_property_setter
 from frappe.model.document import Document
 from frappe.utils import cint
-from frappe.custom.doctype.property_setter.property_setter import make_property_setter
-from frappe import _
+
 
 class PayrollSettings(Document):
 	def validate(self):
diff --git a/erpnext/payroll/doctype/payroll_settings/test_payroll_settings.py b/erpnext/payroll/doctype/payroll_settings/test_payroll_settings.py
index 314866e..30a6a33 100644
--- a/erpnext/payroll/doctype/payroll_settings/test_payroll_settings.py
+++ b/erpnext/payroll/doctype/payroll_settings/test_payroll_settings.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestPayrollSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/payroll/doctype/retention_bonus/retention_bonus.py b/erpnext/payroll/doctype/retention_bonus/retention_bonus.py
index 055bea7..7e731e7 100644
--- a/erpnext/payroll/doctype/retention_bonus/retention_bonus.py
+++ b/erpnext/payroll/doctype/retention_bonus/retention_bonus.py
@@ -3,11 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.document import Document
 from frappe import _
+from frappe.model.document import Document
 from frappe.utils import getdate
+
 from erpnext.hr.utils import validate_active_employee
+
+
 class RetentionBonus(Document):
 	def validate(self):
 		validate_active_employee(self.employee)
diff --git a/erpnext/payroll/doctype/retention_bonus/test_retention_bonus.py b/erpnext/payroll/doctype/retention_bonus/test_retention_bonus.py
index eef4f14..a380d9f 100644
--- a/erpnext/payroll/doctype/retention_bonus/test_retention_bonus.py
+++ b/erpnext/payroll/doctype/retention_bonus/test_retention_bonus.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestRetentionBonus(unittest.TestCase):
 	pass
diff --git a/erpnext/payroll/doctype/salary_component/salary_component.py b/erpnext/payroll/doctype/salary_component/salary_component.py
index 7c92631..761d443 100644
--- a/erpnext/payroll/doctype/salary_component/salary_component.py
+++ b/erpnext/payroll/doctype/salary_component/salary_component.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 from frappe.model.naming import append_number_if_name_exists
 
+
 class SalaryComponent(Document):
 	def validate(self):
 		self.validate_abbr()
diff --git a/erpnext/payroll/doctype/salary_component/test_salary_component.py b/erpnext/payroll/doctype/salary_component/test_salary_component.py
index 4f7db0c..939fa4a 100644
--- a/erpnext/payroll/doctype/salary_component/test_salary_component.py
+++ b/erpnext/payroll/doctype/salary_component/test_salary_component.py
@@ -3,9 +3,10 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
 # test_records = frappe.get_test_records('Salary Component')
 
 class TestSalaryComponent(unittest.TestCase):
diff --git a/erpnext/payroll/doctype/salary_detail/salary_detail.py b/erpnext/payroll/doctype/salary_detail/salary_detail.py
index 0b18754..50d1958 100644
--- a/erpnext/payroll/doctype/salary_detail/salary_detail.py
+++ b/erpnext/payroll/doctype/salary_detail/salary_detail.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class SalaryDetail(Document):
 	pass
diff --git a/erpnext/payroll/doctype/salary_slip/salary_slip.py b/erpnext/payroll/doctype/salary_slip/salary_slip.py
index 37a0b60..8c48345 100644
--- a/erpnext/payroll/doctype/salary_slip/salary_slip.py
+++ b/erpnext/payroll/doctype/salary_slip/salary_slip.py
@@ -2,27 +2,51 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
-import datetime, math
 
-from frappe.utils import add_days, cint, cstr, flt, getdate, rounded, date_diff, money_in_words, formatdate, get_first_day
+import datetime
+import math
+
+import frappe
+from frappe import _, msgprint
 from frappe.model.naming import make_autoname
-
-from frappe import msgprint, _
-from erpnext.payroll.doctype.payroll_entry.payroll_entry import get_start_end_dates
-from erpnext.hr.doctype.employee.employee import get_holiday_list_for_employee
-from erpnext.hr.utils import get_holiday_dates_for_employee
-from erpnext.utilities.transaction_base import TransactionBase
+from frappe.utils import (
+	add_days,
+	cint,
+	cstr,
+	date_diff,
+	flt,
+	formatdate,
+	get_first_day,
+	getdate,
+	money_in_words,
+	rounded,
+)
 from frappe.utils.background_jobs import enqueue
-from erpnext.payroll.doctype.additional_salary.additional_salary import get_additional_salaries
-from erpnext.payroll.doctype.payroll_period.payroll_period import get_period_factor, get_payroll_period
-from erpnext.payroll.doctype.employee_benefit_application.employee_benefit_application import get_benefit_component_amount
-from erpnext.payroll.doctype.employee_benefit_claim.employee_benefit_claim import get_benefit_claim_amount, get_last_payroll_period_benefits
-from erpnext.loan_management.doctype.loan_repayment.loan_repayment import calculate_amounts, create_repayment_entry
-from erpnext.accounts.utils import get_fiscal_year
-from erpnext.hr.utils import validate_active_employee
 from six import iteritems
 
+import erpnext
+from erpnext.accounts.utils import get_fiscal_year
+from erpnext.hr.utils import get_holiday_dates_for_employee, validate_active_employee
+from erpnext.loan_management.doctype.loan_repayment.loan_repayment import (
+	calculate_amounts,
+	create_repayment_entry,
+)
+from erpnext.payroll.doctype.additional_salary.additional_salary import get_additional_salaries
+from erpnext.payroll.doctype.employee_benefit_application.employee_benefit_application import (
+	get_benefit_component_amount,
+)
+from erpnext.payroll.doctype.employee_benefit_claim.employee_benefit_claim import (
+	get_benefit_claim_amount,
+	get_last_payroll_period_benefits,
+)
+from erpnext.payroll.doctype.payroll_entry.payroll_entry import get_start_end_dates
+from erpnext.payroll.doctype.payroll_period.payroll_period import (
+	get_payroll_period,
+	get_period_factor,
+)
+from erpnext.utilities.transaction_base import TransactionBase
+
+
 class SalarySlip(TransactionBase):
 	def __init__(self, *args, **kwargs):
 		super(SalarySlip, self).__init__(*args, **kwargs)
diff --git a/erpnext/payroll/doctype/salary_slip/test_salary_slip.py b/erpnext/payroll/doctype/salary_slip/test_salary_slip.py
index 636ec0b..480daa2 100644
--- a/erpnext/payroll/doctype/salary_slip/test_salary_slip.py
+++ b/erpnext/payroll/doctype/salary_slip/test_salary_slip.py
@@ -2,20 +2,34 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-import unittest
-import frappe
-import erpnext
 import calendar
 import random
+import unittest
+
+import frappe
+from frappe.utils import (
+	add_days,
+	add_months,
+	cstr,
+	flt,
+	get_first_day,
+	get_last_day,
+	getdate,
+	nowdate,
+)
+
+import erpnext
 from erpnext.accounts.utils import get_fiscal_year
-from frappe.utils import getdate, nowdate, add_days, add_months, flt, get_first_day, get_last_day, cstr
-from erpnext.payroll.doctype.salary_structure.salary_structure import make_salary_slip
-from erpnext.payroll.doctype.payroll_entry.payroll_entry import get_month_details
 from erpnext.hr.doctype.employee.test_employee import make_employee
 from erpnext.hr.doctype.leave_allocation.test_leave_allocation import create_leave_allocation
 from erpnext.hr.doctype.leave_type.test_leave_type import create_leave_type
-from erpnext.payroll.doctype.employee_tax_exemption_declaration.test_employee_tax_exemption_declaration \
-	import create_payroll_period, create_exemption_category
+from erpnext.payroll.doctype.employee_tax_exemption_declaration.test_employee_tax_exemption_declaration import (
+	create_exemption_category,
+	create_payroll_period,
+)
+from erpnext.payroll.doctype.payroll_entry.payroll_entry import get_month_details
+from erpnext.payroll.doctype.salary_structure.salary_structure import make_salary_slip
+
 
 class TestSalarySlip(unittest.TestCase):
 	def setUp(self):
@@ -154,7 +168,9 @@
 		self.assertEqual(ss.gross_pay, 78000)
 
 	def test_payment_days(self):
-		from erpnext.payroll.doctype.salary_structure.test_salary_structure import create_salary_structure_assignment
+		from erpnext.payroll.doctype.salary_structure.test_salary_structure import (
+			create_salary_structure_assignment,
+		)
 
 		no_of_days = self.get_no_of_days()
 		# Holidays not included in working days
@@ -231,8 +247,15 @@
 		self.assertTrue(email_queue)
 
 	def test_loan_repayment_salary_slip(self):
-		from erpnext.loan_management.doctype.loan.test_loan import create_loan_type, create_loan, make_loan_disbursement_entry, create_loan_accounts
-		from erpnext.loan_management.doctype.process_loan_interest_accrual.process_loan_interest_accrual import process_loan_interest_accrual_for_term_loans
+		from erpnext.loan_management.doctype.loan.test_loan import (
+			create_loan,
+			create_loan_accounts,
+			create_loan_type,
+			make_loan_disbursement_entry,
+		)
+		from erpnext.loan_management.doctype.process_loan_interest_accrual.process_loan_interest_accrual import (
+			process_loan_interest_accrual_for_term_loans,
+		)
 		from erpnext.payroll.doctype.salary_structure.test_salary_structure import make_salary_structure
 
 		applicant = make_employee("test_loan_repayment_salary_slip@salary.com", company="_Test Company")
@@ -386,8 +409,7 @@
 		for doc in delete_docs:
 			frappe.db.sql("delete from `tab%s` where employee='%s'" % (doc, employee))
 
-		from erpnext.payroll.doctype.salary_structure.test_salary_structure import \
-			make_salary_structure, create_salary_structure_assignment
+		from erpnext.payroll.doctype.salary_structure.test_salary_structure import make_salary_structure
 
 		salary_structure = make_salary_structure("Stucture to test tax", "Monthly",
 			other_details={"max_benefits": 100000}, test_tax=True,
diff --git a/erpnext/payroll/doctype/salary_slip_leave/salary_slip_leave.py b/erpnext/payroll/doctype/salary_slip_leave/salary_slip_leave.py
index 7a92bf1..fc8282b 100644
--- a/erpnext/payroll/doctype/salary_slip_leave/salary_slip_leave.py
+++ b/erpnext/payroll/doctype/salary_slip_leave/salary_slip_leave.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class SalarySlipLeave(Document):
 	pass
diff --git a/erpnext/payroll/doctype/salary_slip_timesheet/salary_slip_timesheet.py b/erpnext/payroll/doctype/salary_slip_timesheet/salary_slip_timesheet.py
index 7adb12e..79c4c6e 100644
--- a/erpnext/payroll/doctype/salary_slip_timesheet/salary_slip_timesheet.py
+++ b/erpnext/payroll/doctype/salary_slip_timesheet/salary_slip_timesheet.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class SalarySlipTimesheet(Document):
 	pass
diff --git a/erpnext/payroll/doctype/salary_structure/salary_structure.py b/erpnext/payroll/doctype/salary_structure/salary_structure.py
index 6dfb3a5..ef401b2 100644
--- a/erpnext/payroll/doctype/salary_structure/salary_structure.py
+++ b/erpnext/payroll/doctype/salary_structure/salary_structure.py
@@ -2,13 +2,15 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
 
-from frappe.utils import flt, cint, cstr
+import frappe
 from frappe import _
-from frappe.model.mapper import get_mapped_doc
 from frappe.model.document import Document
-from six import iteritems
+from frappe.model.mapper import get_mapped_doc
+from frappe.utils import cint, cstr, flt
+
+import erpnext
+
 
 class SalaryStructure(Document):
 	def validate(self):
diff --git a/erpnext/payroll/doctype/salary_structure/salary_structure_dashboard.py b/erpnext/payroll/doctype/salary_structure/salary_structure_dashboard.py
index 0159e35..11d9a94 100644
--- a/erpnext/payroll/doctype/salary_structure/salary_structure_dashboard.py
+++ b/erpnext/payroll/doctype/salary_structure/salary_structure_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
 	return {
diff --git a/erpnext/payroll/doctype/salary_structure/test_salary_structure.py b/erpnext/payroll/doctype/salary_structure/test_salary_structure.py
index 3957d83..ff4a55e 100644
--- a/erpnext/payroll/doctype/salary_structure/test_salary_structure.py
+++ b/erpnext/payroll/doctype/salary_structure/test_salary_structure.py
@@ -2,17 +2,24 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-import erpnext
-from frappe.utils.make_random import get_random
-from frappe.utils import nowdate, add_years, get_first_day, date_diff
-from erpnext.payroll.doctype.salary_structure.salary_structure import make_salary_slip
-from erpnext.payroll.doctype.salary_slip.test_salary_slip import make_earning_salary_component,\
-	make_deduction_salary_component, make_employee_salary_slip, create_tax_slab
-from erpnext.hr.doctype.employee.test_employee import make_employee
-from erpnext.payroll.doctype.employee_tax_exemption_declaration.test_employee_tax_exemption_declaration import create_payroll_period
 
+import frappe
+from frappe.utils import add_years, date_diff, get_first_day, nowdate
+from frappe.utils.make_random import get_random
+
+import erpnext
+from erpnext.hr.doctype.employee.test_employee import make_employee
+from erpnext.payroll.doctype.employee_tax_exemption_declaration.test_employee_tax_exemption_declaration import (
+	create_payroll_period,
+)
+from erpnext.payroll.doctype.salary_slip.test_salary_slip import (
+	create_tax_slab,
+	make_deduction_salary_component,
+	make_earning_salary_component,
+	make_employee_salary_slip,
+)
+from erpnext.payroll.doctype.salary_structure.salary_structure import make_salary_slip
 
 test_dependencies = ["Fiscal Year"]
 
diff --git a/erpnext/payroll/doctype/salary_structure_assignment/salary_structure_assignment.py b/erpnext/payroll/doctype/salary_structure_assignment/salary_structure_assignment.py
index 5fb3ce2..385cf36 100644
--- a/erpnext/payroll/doctype/salary_structure_assignment/salary_structure_assignment.py
+++ b/erpnext/payroll/doctype/salary_structure_assignment/salary_structure_assignment.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import getdate
 from frappe.model.document import Document
+from frappe.utils import getdate
+
 
 class DuplicateAssignment(frappe.ValidationError): pass
 
diff --git a/erpnext/payroll/doctype/salary_structure_assignment/test_salary_structure_assignment.py b/erpnext/payroll/doctype/salary_structure_assignment/test_salary_structure_assignment.py
index a9833bf..fbb894c 100644
--- a/erpnext/payroll/doctype/salary_structure_assignment/test_salary_structure_assignment.py
+++ b/erpnext/payroll/doctype/salary_structure_assignment/test_salary_structure_assignment.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestSalaryStructureAssignment(unittest.TestCase):
 	pass
diff --git a/erpnext/payroll/doctype/taxable_salary_slab/taxable_salary_slab.py b/erpnext/payroll/doctype/taxable_salary_slab/taxable_salary_slab.py
index 49c5255..c0827c4 100644
--- a/erpnext/payroll/doctype/taxable_salary_slab/taxable_salary_slab.py
+++ b/erpnext/payroll/doctype/taxable_salary_slab/taxable_salary_slab.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class TaxableSalarySlab(Document):
 	pass
diff --git a/erpnext/payroll/notification/retention_bonus/retention_bonus.py b/erpnext/payroll/notification/retention_bonus/retention_bonus.py
index 2334f8b..f57de91 100644
--- a/erpnext/payroll/notification/retention_bonus/retention_bonus.py
+++ b/erpnext/payroll/notification/retention_bonus/retention_bonus.py
@@ -1,6 +1,5 @@
 from __future__ import unicode_literals
 
-import frappe
 
 def get_context(context):
 	# do your magic here
diff --git a/erpnext/payroll/report/bank_remittance/bank_remittance.py b/erpnext/payroll/report/bank_remittance/bank_remittance.py
index 05a5366..d55317e 100644
--- a/erpnext/payroll/report/bank_remittance/bank_remittance.py
+++ b/erpnext/payroll/report/bank_remittance/bank_remittance.py
@@ -2,11 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import formatdate
-import itertools
 from frappe import _, get_all
 
+
 def execute(filters=None):
 	columns = [
 		{
diff --git a/erpnext/payroll/report/income_tax_deductions/income_tax_deductions.py b/erpnext/payroll/report/income_tax_deductions/income_tax_deductions.py
index 8a79416..296a7c2 100644
--- a/erpnext/payroll/report/income_tax_deductions/income_tax_deductions.py
+++ b/erpnext/payroll/report/income_tax_deductions/income_tax_deductions.py
@@ -2,9 +2,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
+
+import frappe
 from frappe import _
 
+import erpnext
+
+
 def execute(filters=None):
 	data = get_data(filters)
 	columns = get_columns(filters) if len(data) else []
diff --git a/erpnext/payroll/report/salary_payments_based_on_payment_mode/salary_payments_based_on_payment_mode.py b/erpnext/payroll/report/salary_payments_based_on_payment_mode/salary_payments_based_on_payment_mode.py
index a0dab63..57ea1b3 100644
--- a/erpnext/payroll/report/salary_payments_based_on_payment_mode/salary_payments_based_on_payment_mode.py
+++ b/erpnext/payroll/report/salary_payments_based_on_payment_mode/salary_payments_based_on_payment_mode.py
@@ -2,9 +2,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
+
+import frappe
 from frappe import _
-from erpnext.regional.report.provident_fund_deductions.provident_fund_deductions import get_conditions
+
+import erpnext
+from erpnext.regional.report.provident_fund_deductions.provident_fund_deductions import (
+	get_conditions,
+)
+
 
 def execute(filters=None):
 	mode_of_payments = get_payment_modes()
diff --git a/erpnext/payroll/report/salary_payments_via_ecs/salary_payments_via_ecs.py b/erpnext/payroll/report/salary_payments_via_ecs/salary_payments_via_ecs.py
index d09745c..bc8fd9d 100644
--- a/erpnext/payroll/report/salary_payments_via_ecs/salary_payments_via_ecs.py
+++ b/erpnext/payroll/report/salary_payments_via_ecs/salary_payments_via_ecs.py
@@ -2,9 +2,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
+
+import frappe
 from frappe import _
 
+import erpnext
+
+
 def execute(filters=None):
 	columns = get_columns(filters)
 	data = get_data(filters)
diff --git a/erpnext/payroll/report/salary_register/salary_register.py b/erpnext/payroll/report/salary_register/salary_register.py
index a1b1a8c..2a9dad6 100644
--- a/erpnext/payroll/report/salary_register/salary_register.py
+++ b/erpnext/payroll/report/salary_register/salary_register.py
@@ -2,9 +2,13 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
-from frappe.utils import flt
+
+import frappe
 from frappe import _
+from frappe.utils import flt
+
+import erpnext
+
 
 def execute(filters=None):
 	if not filters: filters = {}
diff --git a/erpnext/portal/doctype/homepage/homepage.py b/erpnext/portal/doctype/homepage/homepage.py
index 54ea7c6..7eeaf4b 100644
--- a/erpnext/portal/doctype/homepage/homepage.py
+++ b/erpnext/portal/doctype/homepage/homepage.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 from frappe.website.utils import delete_page_cache
 
+
 class Homepage(Document):
 	def validate(self):
 		if not self.description:
diff --git a/erpnext/portal/doctype/homepage/test_homepage.py b/erpnext/portal/doctype/homepage/test_homepage.py
index e646775..bc8a828 100644
--- a/erpnext/portal/doctype/homepage/test_homepage.py
+++ b/erpnext/portal/doctype/homepage/test_homepage.py
@@ -3,11 +3,13 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
+import frappe
 from frappe.utils import set_request
 from frappe.website.serve import get_response
 
+
 class TestHomepage(unittest.TestCase):
 	def test_homepage_load(self):
 		set_request(method='GET', path='home')
diff --git a/erpnext/portal/doctype/homepage_featured_product/homepage_featured_product.py b/erpnext/portal/doctype/homepage_featured_product/homepage_featured_product.py
index 936e07d..8e8f776 100644
--- a/erpnext/portal/doctype/homepage_featured_product/homepage_featured_product.py
+++ b/erpnext/portal/doctype/homepage_featured_product/homepage_featured_product.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class HomepageFeaturedProduct(Document):
 	pass
diff --git a/erpnext/portal/doctype/homepage_section/homepage_section.py b/erpnext/portal/doctype/homepage_section/homepage_section.py
index 1ed7030..0817861 100644
--- a/erpnext/portal/doctype/homepage_section/homepage_section.py
+++ b/erpnext/portal/doctype/homepage_section/homepage_section.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 from frappe.utils import cint
 
+
 class HomepageSection(Document):
 	@property
 	def column_value(self):
diff --git a/erpnext/portal/doctype/homepage_section/test_homepage_section.py b/erpnext/portal/doctype/homepage_section/test_homepage_section.py
index 5bb9682..6fb7d0a 100644
--- a/erpnext/portal/doctype/homepage_section/test_homepage_section.py
+++ b/erpnext/portal/doctype/homepage_section/test_homepage_section.py
@@ -3,12 +3,14 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
+import frappe
 from bs4 import BeautifulSoup
 from frappe.utils import set_request
 from frappe.website.serve import get_response
 
+
 class TestHomepageSection(unittest.TestCase):
 	def test_homepage_section_card(self):
 		try:
diff --git a/erpnext/portal/doctype/homepage_section_card/homepage_section_card.py b/erpnext/portal/doctype/homepage_section_card/homepage_section_card.py
index bd17279..b710452 100644
--- a/erpnext/portal/doctype/homepage_section_card/homepage_section_card.py
+++ b/erpnext/portal/doctype/homepage_section_card/homepage_section_card.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class HomepageSectionCard(Document):
 	pass
diff --git a/erpnext/portal/doctype/products_settings/products_settings.py b/erpnext/portal/doctype/products_settings/products_settings.py
index 9a70892..d4f09b9 100644
--- a/erpnext/portal/doctype/products_settings/products_settings.py
+++ b/erpnext/portal/doctype/products_settings/products_settings.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import cint
 from frappe import _
 from frappe.model.document import Document
+from frappe.utils import cint
+
 
 class ProductsSettings(Document):
 	def validate(self):
diff --git a/erpnext/portal/doctype/products_settings/test_products_settings.py b/erpnext/portal/doctype/products_settings/test_products_settings.py
index d04a009..5495cc9 100644
--- a/erpnext/portal/doctype/products_settings/test_products_settings.py
+++ b/erpnext/portal/doctype/products_settings/test_products_settings.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestProductsSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/portal/doctype/website_attribute/website_attribute.py b/erpnext/portal/doctype/website_attribute/website_attribute.py
index b8b667a..f9ba733 100644
--- a/erpnext/portal/doctype/website_attribute/website_attribute.py
+++ b/erpnext/portal/doctype/website_attribute/website_attribute.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class WebsiteAttribute(Document):
 	pass
diff --git a/erpnext/portal/doctype/website_filter_field/website_filter_field.py b/erpnext/portal/doctype/website_filter_field/website_filter_field.py
index 2aa8a6f..335d457 100644
--- a/erpnext/portal/doctype/website_filter_field/website_filter_field.py
+++ b/erpnext/portal/doctype/website_filter_field/website_filter_field.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class WebsiteFilterField(Document):
 	pass
diff --git a/erpnext/portal/product_configurator/item_variants_cache.py b/erpnext/portal/product_configurator/item_variants_cache.py
index fc294ce..636ae8d 100644
--- a/erpnext/portal/product_configurator/item_variants_cache.py
+++ b/erpnext/portal/product_configurator/item_variants_cache.py
@@ -1,5 +1,6 @@
 import frappe
 
+
 class ItemVariantsCacheManager:
 	def __init__(self, item_code):
 		self.item_code = item_code
diff --git a/erpnext/portal/product_configurator/test_product_configurator.py b/erpnext/portal/product_configurator/test_product_configurator.py
index ec7c83a..5db74f2 100644
--- a/erpnext/portal/product_configurator/test_product_configurator.py
+++ b/erpnext/portal/product_configurator/test_product_configurator.py
@@ -1,8 +1,11 @@
 from __future__ import unicode_literals
 
+import unittest
+
+import frappe
 from bs4 import BeautifulSoup
-import frappe, unittest
 from frappe.utils import get_html_for_route
+
 from erpnext.portal.product_configurator.utils import get_products_for_website
 
 test_dependencies = ["Item"]
diff --git a/erpnext/portal/product_configurator/utils.py b/erpnext/portal/product_configurator/utils.py
index d60b1a2..cf623c8 100644
--- a/erpnext/portal/product_configurator/utils.py
+++ b/erpnext/portal/product_configurator/utils.py
@@ -1,8 +1,10 @@
 import frappe
 from frappe.utils import cint
+
 from erpnext.portal.product_configurator.item_variants_cache import ItemVariantsCacheManager
-from erpnext.shopping_cart.product_info import get_product_info_for_website
 from erpnext.setup.doctype.item_group.item_group import get_child_groups
+from erpnext.shopping_cart.product_info import get_product_info_for_website
+
 
 def get_field_filter_data():
 	product_settings = get_product_settings()
diff --git a/erpnext/portal/utils.py b/erpnext/portal/utils.py
index d6d4469..bae8f35 100644
--- a/erpnext/portal/utils.py
+++ b/erpnext/portal/utils.py
@@ -1,9 +1,14 @@
 from __future__ import unicode_literals
+
 import frappe
-from erpnext.shopping_cart.doctype.shopping_cart_settings.shopping_cart_settings import get_shopping_cart_settings
-from erpnext.shopping_cart.cart import get_debtors_account
 from frappe.utils.nestedset import get_root_of
 
+from erpnext.shopping_cart.cart import get_debtors_account
+from erpnext.shopping_cart.doctype.shopping_cart_settings.shopping_cart_settings import (
+	get_shopping_cart_settings,
+)
+
+
 def set_default_role(doc, method):
 	'''Set customer, supplier, student, guardian based on email'''
 	if frappe.flags.setting_role or frappe.flags.in_migrate:
diff --git a/erpnext/projects/doctype/activity_cost/activity_cost.py b/erpnext/projects/doctype/activity_cost/activity_cost.py
index 99226ea..e210324 100644
--- a/erpnext/projects/doctype/activity_cost/activity_cost.py
+++ b/erpnext/projects/doctype/activity_cost/activity_cost.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
 
+
 class DuplicationError(frappe.ValidationError): pass
 
 class ActivityCost(Document):
diff --git a/erpnext/projects/doctype/activity_cost/test_activity_cost.py b/erpnext/projects/doctype/activity_cost/test_activity_cost.py
index 5f35f29..c031f3c 100644
--- a/erpnext/projects/doctype/activity_cost/test_activity_cost.py
+++ b/erpnext/projects/doctype/activity_cost/test_activity_cost.py
@@ -3,11 +3,13 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
 from erpnext.projects.doctype.activity_cost.activity_cost import DuplicationError
 
+
 class TestActivityCost(unittest.TestCase):
 	def test_duplication(self):
 		frappe.db.sql("delete from `tabActivity Cost`")
diff --git a/erpnext/projects/doctype/activity_type/activity_type.py b/erpnext/projects/doctype/activity_type/activity_type.py
index 50e18ef..4c94fe4 100644
--- a/erpnext/projects/doctype/activity_type/activity_type.py
+++ b/erpnext/projects/doctype/activity_type/activity_type.py
@@ -2,7 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class ActivityType(Document):
 	pass
diff --git a/erpnext/projects/doctype/activity_type/test_activity_type.py b/erpnext/projects/doctype/activity_type/test_activity_type.py
index dcb0101..02619af 100644
--- a/erpnext/projects/doctype/activity_type/test_activity_type.py
+++ b/erpnext/projects/doctype/activity_type/test_activity_type.py
@@ -2,6 +2,6 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-
 import frappe
+
 test_records = frappe.get_test_records('Activity Type')
diff --git a/erpnext/projects/doctype/dependent_task/dependent_task.py b/erpnext/projects/doctype/dependent_task/dependent_task.py
index 90a96ac..3f62cef 100644
--- a/erpnext/projects/doctype/dependent_task/dependent_task.py
+++ b/erpnext/projects/doctype/dependent_task/dependent_task.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class DependentTask(Document):
 	pass
diff --git a/erpnext/projects/doctype/project/project.py b/erpnext/projects/doctype/project/project.py
index 1e4b2b0..2a8870b 100644
--- a/erpnext/projects/doctype/project/project.py
+++ b/erpnext/projects/doctype/project/project.py
@@ -2,19 +2,20 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe import _
-from six import iteritems
 from email_reply_parser import EmailReplyParser
-from frappe.utils import (flt, getdate, get_url, now,
-	nowtime, get_time, today, get_datetime, add_days)
-from erpnext.controllers.queries import get_filters_cond
+from frappe import _
 from frappe.desk.reportview import get_match_cond
+from frappe.model.document import Document
+from frappe.utils import add_days, flt, get_datetime, get_time, get_url, nowtime, today
+
+from erpnext.controllers.employee_boarding_controller import update_employee_boarding_status
+from erpnext.controllers.queries import get_filters_cond
+from erpnext.education.doctype.student_attendance.student_attendance import get_holiday_list
 from erpnext.hr.doctype.daily_work_summary.daily_work_summary import get_users_email
 from erpnext.hr.doctype.holiday_list.holiday_list import is_holiday
-from frappe.model.document import Document
-from erpnext.education.doctype.student_attendance.student_attendance import get_holiday_list
-from erpnext.controllers.employee_boarding_controller import update_employee_boarding_status
+
 
 class Project(Document):
 	def get_feed(self):
diff --git a/erpnext/projects/doctype/project/project_dashboard.py b/erpnext/projects/doctype/project/project_dashboard.py
index 39cf016..64fbbf5 100644
--- a/erpnext/projects/doctype/project/project_dashboard.py
+++ b/erpnext/projects/doctype/project/project_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'heatmap': True,
diff --git a/erpnext/projects/doctype/project/test_project.py b/erpnext/projects/doctype/project/test_project.py
index 70139c6..ebc1326 100644
--- a/erpnext/projects/doctype/project/test_project.py
+++ b/erpnext/projects/doctype/project/test_project.py
@@ -2,9 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
+import unittest
 
-import frappe, unittest
-from frappe.utils import getdate, nowdate, add_days
+import frappe
+from frappe.utils import add_days, getdate, nowdate
 
 from erpnext.projects.doctype.project_template.test_project_template import make_project_template
 from erpnext.projects.doctype.task.test_task import create_task
diff --git a/erpnext/projects/doctype/project_template/project_template.py b/erpnext/projects/doctype/project_template/project_template.py
index 2426fd2..493ce5b 100644
--- a/erpnext/projects/doctype/project_template/project_template.py
+++ b/erpnext/projects/doctype/project_template/project_template.py
@@ -3,11 +3,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.document import Document
 from frappe import _
+from frappe.model.document import Document
 from frappe.utils import get_link_to_form
 
+
 class ProjectTemplate(Document):
 
 	def validate(self):
diff --git a/erpnext/projects/doctype/project_template/project_template_dashboard.py b/erpnext/projects/doctype/project_template/project_template_dashboard.py
index 67f74f5..8eeaa8d 100644
--- a/erpnext/projects/doctype/project_template/project_template_dashboard.py
+++ b/erpnext/projects/doctype/project_template/project_template_dashboard.py
@@ -1,5 +1,6 @@
 from __future__ import unicode_literals
 
+
 def get_data():
 	return {
 		'fieldname': 'project_template',
diff --git a/erpnext/projects/doctype/project_template/test_project_template.py b/erpnext/projects/doctype/project_template/test_project_template.py
index d546fd0..f71984f 100644
--- a/erpnext/projects/doctype/project_template/test_project_template.py
+++ b/erpnext/projects/doctype/project_template/test_project_template.py
@@ -3,10 +3,13 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
+import frappe
+
 from erpnext.projects.doctype.task.test_task import create_task
 
+
 class TestProjectTemplate(unittest.TestCase):
 	pass
 
diff --git a/erpnext/projects/doctype/project_template_task/project_template_task.py b/erpnext/projects/doctype/project_template_task/project_template_task.py
index 57bc4f1..e086141 100644
--- a/erpnext/projects/doctype/project_template_task/project_template_task.py
+++ b/erpnext/projects/doctype/project_template_task/project_template_task.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class ProjectTemplateTask(Document):
 	pass
diff --git a/erpnext/projects/doctype/project_type/project_type.py b/erpnext/projects/doctype/project_type/project_type.py
index 36137ca..1089483 100644
--- a/erpnext/projects/doctype/project_type/project_type.py
+++ b/erpnext/projects/doctype/project_type/project_type.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-from frappe.model.document import Document
+
 import frappe
 from frappe import _
+from frappe.model.document import Document
+
 
 class ProjectType(Document):
 	def on_trash(self):
diff --git a/erpnext/projects/doctype/project_type/test_project_type.py b/erpnext/projects/doctype/project_type/test_project_type.py
index ee23390..a79020f 100644
--- a/erpnext/projects/doctype/project_type/test_project_type.py
+++ b/erpnext/projects/doctype/project_type/test_project_type.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestProjectType(unittest.TestCase):
 	pass
diff --git a/erpnext/projects/doctype/project_update/project_update.py b/erpnext/projects/doctype/project_update/project_update.py
index 2e1ec74..147e591 100644
--- a/erpnext/projects/doctype/project_update/project_update.py
+++ b/erpnext/projects/doctype/project_update/project_update.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 
+
 class ProjectUpdate(Document):
     pass
 
diff --git a/erpnext/projects/doctype/project_update/test_project_update.py b/erpnext/projects/doctype/project_update/test_project_update.py
index 2edd2f8..1596603 100644
--- a/erpnext/projects/doctype/project_update/test_project_update.py
+++ b/erpnext/projects/doctype/project_update/test_project_update.py
@@ -3,9 +3,11 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
+
 class TestProjectUpdate(unittest.TestCase):
 	pass
 
diff --git a/erpnext/projects/doctype/project_user/project_user.py b/erpnext/projects/doctype/project_user/project_user.py
index 3198f3b..7abe945 100644
--- a/erpnext/projects/doctype/project_user/project_user.py
+++ b/erpnext/projects/doctype/project_user/project_user.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ProjectUser(Document):
 	pass
diff --git a/erpnext/projects/doctype/projects_settings/projects_settings.py b/erpnext/projects/doctype/projects_settings/projects_settings.py
index 9dcac14..88bb247 100644
--- a/erpnext/projects/doctype/projects_settings/projects_settings.py
+++ b/erpnext/projects/doctype/projects_settings/projects_settings.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ProjectsSettings(Document):
 	pass
diff --git a/erpnext/projects/doctype/projects_settings/test_projects_settings.py b/erpnext/projects/doctype/projects_settings/test_projects_settings.py
index d671da7..3266246 100644
--- a/erpnext/projects/doctype/projects_settings/test_projects_settings.py
+++ b/erpnext/projects/doctype/projects_settings/test_projects_settings.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestProjectsSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/projects/doctype/task/task.py b/erpnext/projects/doctype/task/task.py
index 5976e01..6b90622 100755
--- a/erpnext/projects/doctype/task/task.py
+++ b/erpnext/projects/doctype/task/task.py
@@ -9,7 +9,7 @@
 from frappe import _, throw
 from frappe.desk.form.assign_to import clear, close_all_assignments
 from frappe.model.mapper import get_mapped_doc
-from frappe.utils import add_days, cstr, date_diff, get_link_to_form, getdate, today, flt
+from frappe.utils import add_days, cstr, date_diff, flt, get_link_to_form, getdate, today
 from frappe.utils.nestedset import NestedSet
 
 
diff --git a/erpnext/projects/doctype/task/test_task.py b/erpnext/projects/doctype/task/test_task.py
index 0fad5e8..41a9c16 100644
--- a/erpnext/projects/doctype/task/test_task.py
+++ b/erpnext/projects/doctype/task/test_task.py
@@ -1,12 +1,15 @@
 # Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
-import frappe
+
 import unittest
-from frappe.utils import getdate, nowdate, add_days
+
+import frappe
+from frappe.utils import add_days, getdate, nowdate
 
 from erpnext.projects.doctype.task.task import CircularReferenceError
 
+
 class TestTask(unittest.TestCase):
 	def test_circular_reference(self):
 		task1 = create_task("_Test Task 1", add_days(nowdate(), -15), add_days(nowdate(), -10))
diff --git a/erpnext/projects/doctype/task_depends_on/task_depends_on.py b/erpnext/projects/doctype/task_depends_on/task_depends_on.py
index 723a0fc..ddb67ee 100644
--- a/erpnext/projects/doctype/task_depends_on/task_depends_on.py
+++ b/erpnext/projects/doctype/task_depends_on/task_depends_on.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class TaskDependsOn(Document):
 	pass
diff --git a/erpnext/projects/doctype/task_type/task_type.py b/erpnext/projects/doctype/task_type/task_type.py
index 9c0b532..5aacf8a 100644
--- a/erpnext/projects/doctype/task_type/task_type.py
+++ b/erpnext/projects/doctype/task_type/task_type.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class TaskType(Document):
 	pass
diff --git a/erpnext/projects/doctype/task_type/test_task_type.py b/erpnext/projects/doctype/task_type/test_task_type.py
index 1db6e27..7690c37 100644
--- a/erpnext/projects/doctype/task_type/test_task_type.py
+++ b/erpnext/projects/doctype/task_type/test_task_type.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestTaskType(unittest.TestCase):
 	pass
diff --git a/erpnext/projects/doctype/timesheet/test_timesheet.py b/erpnext/projects/doctype/timesheet/test_timesheet.py
index 2b0c3ab..6b32c66 100644
--- a/erpnext/projects/doctype/timesheet/test_timesheet.py
+++ b/erpnext/projects/doctype/timesheet/test_timesheet.py
@@ -3,21 +3,28 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
-import unittest
 import datetime
-from frappe.utils.make_random import get_random
-from frappe.utils import now_datetime, nowdate, add_days, add_months
-from erpnext.projects.doctype.timesheet.timesheet import OverlapError
-from erpnext.projects.doctype.timesheet.timesheet import make_salary_slip, make_sales_invoice
+import unittest
+
+import frappe
+from frappe.utils import add_months, now_datetime, nowdate
+
 from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
-from erpnext.payroll.doctype.salary_structure.test_salary_structure \
-	import make_salary_structure, create_salary_structure_assignment
-from erpnext.payroll.doctype.salary_slip.test_salary_slip import (
-	make_earning_salary_component,
-	make_deduction_salary_component
-)
 from erpnext.hr.doctype.employee.test_employee import make_employee
+from erpnext.payroll.doctype.salary_slip.test_salary_slip import (
+	make_deduction_salary_component,
+	make_earning_salary_component,
+)
+from erpnext.payroll.doctype.salary_structure.test_salary_structure import (
+	create_salary_structure_assignment,
+	make_salary_structure,
+)
+from erpnext.projects.doctype.timesheet.timesheet import (
+	OverlapError,
+	make_salary_slip,
+	make_sales_invoice,
+)
+
 
 class TestTimesheet(unittest.TestCase):
 	@classmethod
diff --git a/erpnext/projects/doctype/timesheet/timesheet.py b/erpnext/projects/doctype/timesheet/timesheet.py
index 5f569d6..e144e82 100644
--- a/erpnext/projects/doctype/timesheet/timesheet.py
+++ b/erpnext/projects/doctype/timesheet/timesheet.py
@@ -3,19 +3,18 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe import _
 
 import json
-from datetime import timedelta
-from erpnext.controllers.queries import get_match_cond
-from frappe.utils import flt, time_diff_in_hours, get_datetime, getdate, cint, date_diff, add_to_date
+
+import frappe
+from frappe import _
 from frappe.model.document import Document
-from erpnext.manufacturing.doctype.workstation.workstation import (check_if_within_operating_hours,
-	WorkstationHolidayError)
-from erpnext.manufacturing.doctype.manufacturing_settings.manufacturing_settings import get_mins_between_operations
-from erpnext.setup.utils import get_exchange_rate
+from frappe.utils import flt, getdate, time_diff_in_hours
+
+from erpnext.controllers.queries import get_match_cond
 from erpnext.hr.utils import validate_active_employee
+from erpnext.setup.utils import get_exchange_rate
+
 
 class OverlapError(frappe.ValidationError): pass
 class OverWorkLoggedError(frappe.ValidationError): pass
diff --git a/erpnext/projects/doctype/timesheet/timesheet_dashboard.py b/erpnext/projects/doctype/timesheet/timesheet_dashboard.py
index 088d98c..3ef1d92 100644
--- a/erpnext/projects/doctype/timesheet/timesheet_dashboard.py
+++ b/erpnext/projects/doctype/timesheet/timesheet_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'time_sheet',
diff --git a/erpnext/projects/doctype/timesheet_detail/timesheet_detail.py b/erpnext/projects/doctype/timesheet_detail/timesheet_detail.py
index 7da94b7..4fd233e 100644
--- a/erpnext/projects/doctype/timesheet_detail/timesheet_detail.py
+++ b/erpnext/projects/doctype/timesheet_detail/timesheet_detail.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class TimesheetDetail(Document):
 	pass
diff --git a/erpnext/projects/report/billing_summary.py b/erpnext/projects/report/billing_summary.py
index a22ed7b..dec2824 100644
--- a/erpnext/projects/report/billing_summary.py
+++ b/erpnext/projects/report/billing_summary.py
@@ -3,9 +3,11 @@
 
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import time_diff_in_hours, flt
+from frappe.utils import flt, time_diff_in_hours
+
 
 def get_columns():
 	return [
diff --git a/erpnext/projects/report/daily_timesheet_summary/daily_timesheet_summary.py b/erpnext/projects/report/daily_timesheet_summary/daily_timesheet_summary.py
index 3dcae5b..3a33b4b 100644
--- a/erpnext/projects/report/daily_timesheet_summary/daily_timesheet_summary.py
+++ b/erpnext/projects/report/daily_timesheet_summary/daily_timesheet_summary.py
@@ -2,10 +2,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.desk.reportview import build_match_conditions
 
+
 def execute(filters=None):
 	if not filters:
 		filters = {}
diff --git a/erpnext/projects/report/delayed_tasks_summary/delayed_tasks_summary.py b/erpnext/projects/report/delayed_tasks_summary/delayed_tasks_summary.py
index cdabe64..3016390 100644
--- a/erpnext/projects/report/delayed_tasks_summary/delayed_tasks_summary.py
+++ b/erpnext/projects/report/delayed_tasks_summary/delayed_tasks_summary.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.utils import date_diff, nowdate
 
+
 def execute(filters=None):
 	columns, data = [], []
 	data = get_data(filters)
diff --git a/erpnext/projects/report/delayed_tasks_summary/test_delayed_tasks_summary.py b/erpnext/projects/report/delayed_tasks_summary/test_delayed_tasks_summary.py
index 78291b2..88c77c8 100644
--- a/erpnext/projects/report/delayed_tasks_summary/test_delayed_tasks_summary.py
+++ b/erpnext/projects/report/delayed_tasks_summary/test_delayed_tasks_summary.py
@@ -1,10 +1,14 @@
 from __future__ import unicode_literals
+
 import unittest
+
 import frappe
-from frappe.utils import nowdate, add_days, add_months
+from frappe.utils import add_days, add_months, nowdate
+
 from erpnext.projects.doctype.task.test_task import create_task
 from erpnext.projects.report.delayed_tasks_summary.delayed_tasks_summary import execute
 
+
 class TestDelayedTasksSummary(unittest.TestCase):
 	@classmethod
 	def setUp(self):
diff --git a/erpnext/projects/report/employee_billing_summary/employee_billing_summary.py b/erpnext/projects/report/employee_billing_summary/employee_billing_summary.py
index 17c92c2..30bd9f0 100644
--- a/erpnext/projects/report/employee_billing_summary/employee_billing_summary.py
+++ b/erpnext/projects/report/employee_billing_summary/employee_billing_summary.py
@@ -2,10 +2,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe import _
+
 from erpnext.projects.report.billing_summary import get_columns, get_data
 
+
 def execute(filters=None):
 	filters = frappe._dict(filters or {})
 	columns = get_columns()
diff --git a/erpnext/projects/report/employee_hours_utilization_based_on_timesheet/employee_hours_utilization_based_on_timesheet.py b/erpnext/projects/report/employee_hours_utilization_based_on_timesheet/employee_hours_utilization_based_on_timesheet.py
index 4d22f46..d59a2ac 100644
--- a/erpnext/projects/report/employee_hours_utilization_based_on_timesheet/employee_hours_utilization_based_on_timesheet.py
+++ b/erpnext/projects/report/employee_hours_utilization_based_on_timesheet/employee_hours_utilization_based_on_timesheet.py
@@ -2,11 +2,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import flt, getdate
 from six import iteritems
 
+
 def execute(filters=None):
 	return EmployeeHoursReport(filters).run()
 
diff --git a/erpnext/projects/report/employee_hours_utilization_based_on_timesheet/test_employee_util.py b/erpnext/projects/report/employee_hours_utilization_based_on_timesheet/test_employee_util.py
index 969fc55..f456c84 100644
--- a/erpnext/projects/report/employee_hours_utilization_based_on_timesheet/test_employee_util.py
+++ b/erpnext/projects/report/employee_hours_utilization_based_on_timesheet/test_employee_util.py
@@ -1,11 +1,16 @@
 from __future__ import unicode_literals
-import unittest
-import frappe
 
+import unittest
+
+import frappe
 from frappe.utils.make_random import get_random
-from erpnext.projects.report.employee_hours_utilization_based_on_timesheet.employee_hours_utilization_based_on_timesheet import execute
+
 from erpnext.hr.doctype.employee.test_employee import make_employee
 from erpnext.projects.doctype.project.test_project import make_project
+from erpnext.projects.report.employee_hours_utilization_based_on_timesheet.employee_hours_utilization_based_on_timesheet import (
+	execute,
+)
+
 
 class TestEmployeeUtilization(unittest.TestCase):
     @classmethod
diff --git a/erpnext/projects/report/project_billing_summary/project_billing_summary.py b/erpnext/projects/report/project_billing_summary/project_billing_summary.py
index 17c92c2..30bd9f0 100644
--- a/erpnext/projects/report/project_billing_summary/project_billing_summary.py
+++ b/erpnext/projects/report/project_billing_summary/project_billing_summary.py
@@ -2,10 +2,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe import _
+
 from erpnext.projects.report.billing_summary import get_columns, get_data
 
+
 def execute(filters=None):
 	filters = frappe._dict(filters or {})
 	columns = get_columns()
diff --git a/erpnext/projects/report/project_profitability/project_profitability.py b/erpnext/projects/report/project_profitability/project_profitability.py
index 0a52f7b..13e02c8 100644
--- a/erpnext/projects/report/project_profitability/project_profitability.py
+++ b/erpnext/projects/report/project_profitability/project_profitability.py
@@ -2,10 +2,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import flt
 
+
 def execute(filters=None):
 	columns, data = [], []
 	data = get_data(filters)
diff --git a/erpnext/projects/report/project_profitability/test_project_profitability.py b/erpnext/projects/report/project_profitability/test_project_profitability.py
index 180926f..8cf169b 100644
--- a/erpnext/projects/report/project_profitability/test_project_profitability.py
+++ b/erpnext/projects/report/project_profitability/test_project_profitability.py
@@ -1,12 +1,19 @@
 from __future__ import unicode_literals
+
 import unittest
+
 import frappe
-from frappe.utils import getdate, nowdate, add_days
+from frappe.utils import add_days, getdate, nowdate
+
 from erpnext.hr.doctype.employee.test_employee import make_employee
-from erpnext.projects.doctype.timesheet.test_timesheet import make_salary_structure_for_timesheet, make_timesheet
+from erpnext.projects.doctype.timesheet.test_timesheet import (
+	make_salary_structure_for_timesheet,
+	make_timesheet,
+)
 from erpnext.projects.doctype.timesheet.timesheet import make_salary_slip, make_sales_invoice
 from erpnext.projects.report.project_profitability.project_profitability import execute
 
+
 class TestProjectProfitability(unittest.TestCase):
 
 	def setUp(self):
diff --git a/erpnext/projects/report/project_summary/project_summary.py b/erpnext/projects/report/project_summary/project_summary.py
index 98dd617..dbb4e84 100644
--- a/erpnext/projects/report/project_summary/project_summary.py
+++ b/erpnext/projects/report/project_summary/project_summary.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 def execute(filters=None):
 	columns = get_columns()
 	data = []
diff --git a/erpnext/projects/report/project_wise_stock_tracking/project_wise_stock_tracking.py b/erpnext/projects/report/project_wise_stock_tracking/project_wise_stock_tracking.py
index c13d7cf..5d2b7db 100644
--- a/erpnext/projects/report/project_wise_stock_tracking/project_wise_stock_tracking.py
+++ b/erpnext/projects/report/project_wise_stock_tracking/project_wise_stock_tracking.py
@@ -5,6 +5,7 @@
 import frappe
 from frappe import _
 
+
 def execute(filters=None):
 	columns = get_columns()
 	proj_details = get_project_details()
diff --git a/erpnext/projects/utils.py b/erpnext/projects/utils.py
index c39f908..6926470 100644
--- a/erpnext/projects/utils.py
+++ b/erpnext/projects/utils.py
@@ -4,8 +4,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 @frappe.whitelist()
 @frappe.validate_and_sanitize_search_inputs
 def query_task(doctype, txt, searchfield, start, page_len, filters):
diff --git a/erpnext/projects/web_form/tasks/tasks.py b/erpnext/projects/web_form/tasks/tasks.py
index e5a9404..aed7942 100644
--- a/erpnext/projects/web_form/tasks/tasks.py
+++ b/erpnext/projects/web_form/tasks/tasks.py
@@ -2,6 +2,7 @@
 
 import frappe
 
+
 def get_context(context):
 	if frappe.form_dict.project:
 		context.parents = [{'title': frappe.form_dict.project, 'route': '/projects?project='+ frappe.form_dict.project}]
diff --git a/erpnext/quality_management/doctype/non_conformance/non_conformance.py b/erpnext/quality_management/doctype/non_conformance/non_conformance.py
index d4e8cc7..a4613fd 100644
--- a/erpnext/quality_management/doctype/non_conformance/non_conformance.py
+++ b/erpnext/quality_management/doctype/non_conformance/non_conformance.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class NonConformance(Document):
 	pass
diff --git a/erpnext/quality_management/doctype/non_conformance/test_non_conformance.py b/erpnext/quality_management/doctype/non_conformance/test_non_conformance.py
index 54f8b58..759b117 100644
--- a/erpnext/quality_management/doctype/non_conformance/test_non_conformance.py
+++ b/erpnext/quality_management/doctype/non_conformance/test_non_conformance.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestNonConformance(unittest.TestCase):
 	pass
diff --git a/erpnext/quality_management/doctype/quality_action/quality_action.py b/erpnext/quality_management/doctype/quality_action/quality_action.py
index 02401ba..646a0df 100644
--- a/erpnext/quality_management/doctype/quality_action/quality_action.py
+++ b/erpnext/quality_management/doctype/quality_action/quality_action.py
@@ -3,9 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class QualityAction(Document):
 	def validate(self):
 		self.status = 'Open' if any([d.status=='Open' for d in self.resolutions]) else 'Completed'
diff --git a/erpnext/quality_management/doctype/quality_action/test_quality_action.py b/erpnext/quality_management/doctype/quality_action/test_quality_action.py
index 98d665f..33229d4 100644
--- a/erpnext/quality_management/doctype/quality_action/test_quality_action.py
+++ b/erpnext/quality_management/doctype/quality_action/test_quality_action.py
@@ -3,9 +3,9 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestQualityAction(unittest.TestCase):
 	# quality action has no code
 	pass
diff --git a/erpnext/quality_management/doctype/quality_action_resolution/quality_action_resolution.py b/erpnext/quality_management/doctype/quality_action_resolution/quality_action_resolution.py
index de8873f..b456fb7 100644
--- a/erpnext/quality_management/doctype/quality_action_resolution/quality_action_resolution.py
+++ b/erpnext/quality_management/doctype/quality_action_resolution/quality_action_resolution.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class QualityActionResolution(Document):
 	pass
diff --git a/erpnext/quality_management/doctype/quality_feedback/quality_feedback.py b/erpnext/quality_management/doctype/quality_feedback/quality_feedback.py
index d3e96cf..9189c28 100644
--- a/erpnext/quality_management/doctype/quality_feedback/quality_feedback.py
+++ b/erpnext/quality_management/doctype/quality_feedback/quality_feedback.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 
+
 class QualityFeedback(Document):
 	@frappe.whitelist()
 	def set_parameters(self):
diff --git a/erpnext/quality_management/doctype/quality_feedback/test_quality_feedback.py b/erpnext/quality_management/doctype/quality_feedback/test_quality_feedback.py
index 5a8bd5c..7a87c36 100644
--- a/erpnext/quality_management/doctype/quality_feedback/test_quality_feedback.py
+++ b/erpnext/quality_management/doctype/quality_feedback/test_quality_feedback.py
@@ -3,9 +3,10 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
 
 class TestQualityFeedback(unittest.TestCase):
 	def test_quality_feedback(self):
diff --git a/erpnext/quality_management/doctype/quality_feedback_parameter/quality_feedback_parameter.py b/erpnext/quality_management/doctype/quality_feedback_parameter/quality_feedback_parameter.py
index d652e8a..9a21b26 100644
--- a/erpnext/quality_management/doctype/quality_feedback_parameter/quality_feedback_parameter.py
+++ b/erpnext/quality_management/doctype/quality_feedback_parameter/quality_feedback_parameter.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class QualityFeedbackParameter(Document):
 	pass
diff --git a/erpnext/quality_management/doctype/quality_feedback_template/quality_feedback_template.py b/erpnext/quality_management/doctype/quality_feedback_template/quality_feedback_template.py
index 0c6dfc0..c6a520a 100644
--- a/erpnext/quality_management/doctype/quality_feedback_template/quality_feedback_template.py
+++ b/erpnext/quality_management/doctype/quality_feedback_template/quality_feedback_template.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class QualityFeedbackTemplate(Document):
 	pass
diff --git a/erpnext/quality_management/doctype/quality_feedback_template/test_quality_feedback_template.py b/erpnext/quality_management/doctype/quality_feedback_template/test_quality_feedback_template.py
index afed14b..1de58aa 100644
--- a/erpnext/quality_management/doctype/quality_feedback_template/test_quality_feedback_template.py
+++ b/erpnext/quality_management/doctype/quality_feedback_template/test_quality_feedback_template.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestQualityFeedbackTemplate(unittest.TestCase):
 	pass
diff --git a/erpnext/quality_management/doctype/quality_feedback_template_parameter/quality_feedback_template_parameter.py b/erpnext/quality_management/doctype/quality_feedback_template_parameter/quality_feedback_template_parameter.py
index 3f3348f..44a6b01 100644
--- a/erpnext/quality_management/doctype/quality_feedback_template_parameter/quality_feedback_template_parameter.py
+++ b/erpnext/quality_management/doctype/quality_feedback_template_parameter/quality_feedback_template_parameter.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class QualityFeedbackTemplateParameter(Document):
 	pass
diff --git a/erpnext/quality_management/doctype/quality_goal/quality_goal.py b/erpnext/quality_management/doctype/quality_goal/quality_goal.py
index 3e616b7..2888401 100644
--- a/erpnext/quality_management/doctype/quality_goal/quality_goal.py
+++ b/erpnext/quality_management/doctype/quality_goal/quality_goal.py
@@ -3,10 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class QualityGoal(Document):
 	def validate(self):
 		pass
diff --git a/erpnext/quality_management/doctype/quality_goal/test_quality_goal.py b/erpnext/quality_management/doctype/quality_goal/test_quality_goal.py
index 0e135b5..84240d2 100644
--- a/erpnext/quality_management/doctype/quality_goal/test_quality_goal.py
+++ b/erpnext/quality_management/doctype/quality_goal/test_quality_goal.py
@@ -3,9 +3,10 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from erpnext.quality_management.doctype.quality_procedure.test_quality_procedure import create_procedure
+
+import frappe
+
 
 class TestQualityGoal(unittest.TestCase):
 	def test_quality_goal(self):
diff --git a/erpnext/quality_management/doctype/quality_goal_objective/quality_goal_objective.py b/erpnext/quality_management/doctype/quality_goal_objective/quality_goal_objective.py
index f4bd357..c9c2c6e 100644
--- a/erpnext/quality_management/doctype/quality_goal_objective/quality_goal_objective.py
+++ b/erpnext/quality_management/doctype/quality_goal_objective/quality_goal_objective.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class QualityGoalObjective(Document):
 	pass
diff --git a/erpnext/quality_management/doctype/quality_meeting/quality_meeting.py b/erpnext/quality_management/doctype/quality_meeting/quality_meeting.py
index 9e453eb..0ac0484 100644
--- a/erpnext/quality_management/doctype/quality_meeting/quality_meeting.py
+++ b/erpnext/quality_management/doctype/quality_meeting/quality_meeting.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class QualityMeeting(Document):
 	pass
diff --git a/erpnext/quality_management/doctype/quality_meeting/test_quality_meeting.py b/erpnext/quality_management/doctype/quality_meeting/test_quality_meeting.py
index 6bf4c17..e57256d 100644
--- a/erpnext/quality_management/doctype/quality_meeting/test_quality_meeting.py
+++ b/erpnext/quality_management/doctype/quality_meeting/test_quality_meeting.py
@@ -3,9 +3,9 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestQualityMeeting(unittest.TestCase):
 	# nothing to test
 	pass
diff --git a/erpnext/quality_management/doctype/quality_meeting_agenda/quality_meeting_agenda.py b/erpnext/quality_management/doctype/quality_meeting_agenda/quality_meeting_agenda.py
index 5d77975..5e4d9ff 100644
--- a/erpnext/quality_management/doctype/quality_meeting_agenda/quality_meeting_agenda.py
+++ b/erpnext/quality_management/doctype/quality_meeting_agenda/quality_meeting_agenda.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class QualityMeetingAgenda(Document):
 	pass
diff --git a/erpnext/quality_management/doctype/quality_meeting_agenda/test_quality_meeting_agenda.py b/erpnext/quality_management/doctype/quality_meeting_agenda/test_quality_meeting_agenda.py
index 4750cc1..8744d27 100644
--- a/erpnext/quality_management/doctype/quality_meeting_agenda/test_quality_meeting_agenda.py
+++ b/erpnext/quality_management/doctype/quality_meeting_agenda/test_quality_meeting_agenda.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestQualityMeetingAgenda(unittest.TestCase):
 	pass
diff --git a/erpnext/quality_management/doctype/quality_meeting_minutes/quality_meeting_minutes.py b/erpnext/quality_management/doctype/quality_meeting_minutes/quality_meeting_minutes.py
index 47b2c95..e3d061b 100644
--- a/erpnext/quality_management/doctype/quality_meeting_minutes/quality_meeting_minutes.py
+++ b/erpnext/quality_management/doctype/quality_meeting_minutes/quality_meeting_minutes.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class QualityMeetingMinutes(Document):
 	pass
diff --git a/erpnext/quality_management/doctype/quality_procedure/quality_procedure.py b/erpnext/quality_management/doctype/quality_procedure/quality_procedure.py
index 117db00..56293c9 100644
--- a/erpnext/quality_management/doctype/quality_procedure/quality_procedure.py
+++ b/erpnext/quality_management/doctype/quality_procedure/quality_procedure.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils.nestedset import NestedSet, rebuild_tree
 from frappe import _
+from frappe.utils.nestedset import NestedSet
+
 
 class QualityProcedure(NestedSet):
 	nsm_parent_field = 'parent_quality_procedure'
diff --git a/erpnext/quality_management/doctype/quality_procedure/test_quality_procedure.py b/erpnext/quality_management/doctype/quality_procedure/test_quality_procedure.py
index 4fa7734..b064011 100644
--- a/erpnext/quality_management/doctype/quality_procedure/test_quality_procedure.py
+++ b/erpnext/quality_management/doctype/quality_procedure/test_quality_procedure.py
@@ -3,11 +3,13 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
 from .quality_procedure import add_node
 
+
 class TestQualityProcedure(unittest.TestCase):
 	def test_add_node(self):
 		try:
diff --git a/erpnext/quality_management/doctype/quality_procedure_process/quality_procedure_process.py b/erpnext/quality_management/doctype/quality_procedure_process/quality_procedure_process.py
index 0d9a286..e281294 100644
--- a/erpnext/quality_management/doctype/quality_procedure_process/quality_procedure_process.py
+++ b/erpnext/quality_management/doctype/quality_procedure_process/quality_procedure_process.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class QualityProcedureProcess(Document):
 	pass
diff --git a/erpnext/quality_management/doctype/quality_review/quality_review.py b/erpnext/quality_management/doctype/quality_review/quality_review.py
index 34cc890..b766623 100644
--- a/erpnext/quality_management/doctype/quality_review/quality_review.py
+++ b/erpnext/quality_management/doctype/quality_review/quality_review.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 
+
 class QualityReview(Document):
 	def validate(self):
 		# fetch targets from goal
diff --git a/erpnext/quality_management/doctype/quality_review/test_quality_review.py b/erpnext/quality_management/doctype/quality_review/test_quality_review.py
index 161ecd0..2f28dda 100644
--- a/erpnext/quality_management/doctype/quality_review/test_quality_review.py
+++ b/erpnext/quality_management/doctype/quality_review/test_quality_review.py
@@ -3,12 +3,14 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
 from ..quality_goal.test_quality_goal import get_quality_goal
 from .quality_review import review
 
+
 class TestQualityReview(unittest.TestCase):
 	def test_review_creation(self):
 		quality_goal = get_quality_goal()
diff --git a/erpnext/quality_management/doctype/quality_review_objective/quality_review_objective.py b/erpnext/quality_management/doctype/quality_review_objective/quality_review_objective.py
index 3092a1e..23b11e8 100644
--- a/erpnext/quality_management/doctype/quality_review_objective/quality_review_objective.py
+++ b/erpnext/quality_management/doctype/quality_review_objective/quality_review_objective.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class QualityReviewObjective(Document):
 	pass
diff --git a/erpnext/regional/__init__.py b/erpnext/regional/__init__.py
index faa5912..45a689e 100644
--- a/erpnext/regional/__init__.py
+++ b/erpnext/regional/__init__.py
@@ -2,10 +2,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
+
 from erpnext import get_region
 
+
 def check_deletion_permission(doc, method):
 	region = get_region(doc.company)
 	if region in ["Nepal", "France"] and doc.docstatus != 0:
diff --git a/erpnext/regional/address_template/test_regional_address_template.py b/erpnext/regional/address_template/test_regional_address_template.py
index 8a05ea2..2880d62 100644
--- a/erpnext/regional/address_template/test_regional_address_template.py
+++ b/erpnext/regional/address_template/test_regional_address_template.py
@@ -1,9 +1,11 @@
 from __future__ import unicode_literals
+
 from unittest import TestCase
 
 import frappe
-from erpnext.regional.address_template.setup import get_address_templates
-from erpnext.regional.address_template.setup import update_address_template
+
+from erpnext.regional.address_template.setup import get_address_templates, update_address_template
+
 
 def ensure_country(country):
 	if frappe.db.exists("Country", country):
diff --git a/erpnext/regional/doctype/datev_settings/datev_settings.py b/erpnext/regional/doctype/datev_settings/datev_settings.py
index cff5bba..0d2d9eb 100644
--- a/erpnext/regional/doctype/datev_settings/datev_settings.py
+++ b/erpnext/regional/doctype/datev_settings/datev_settings.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class DATEVSettings(Document):
 	pass
diff --git a/erpnext/regional/doctype/datev_settings/test_datev_settings.py b/erpnext/regional/doctype/datev_settings/test_datev_settings.py
index 0271329..73412f7 100644
--- a/erpnext/regional/doctype/datev_settings/test_datev_settings.py
+++ b/erpnext/regional/doctype/datev_settings/test_datev_settings.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestDATEVSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/regional/doctype/gst_hsn_code/gst_hsn_code.py b/erpnext/regional/doctype/gst_hsn_code/gst_hsn_code.py
index 4791dc2..0704de8 100644
--- a/erpnext/regional/doctype/gst_hsn_code/gst_hsn_code.py
+++ b/erpnext/regional/doctype/gst_hsn_code/gst_hsn_code.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 
+
 class GSTHSNCode(Document):
 	pass
 
diff --git a/erpnext/regional/doctype/gst_hsn_code/test_gst_hsn_code.py b/erpnext/regional/doctype/gst_hsn_code/test_gst_hsn_code.py
index ed54f20..1a90e6d 100644
--- a/erpnext/regional/doctype/gst_hsn_code/test_gst_hsn_code.py
+++ b/erpnext/regional/doctype/gst_hsn_code/test_gst_hsn_code.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestGSTHSNCode(unittest.TestCase):
 	pass
diff --git a/erpnext/regional/doctype/gst_settings/gst_settings.py b/erpnext/regional/doctype/gst_settings/gst_settings.py
index af3d92e..7b27fb6 100644
--- a/erpnext/regional/doctype/gst_settings/gst_settings.py
+++ b/erpnext/regional/doctype/gst_settings/gst_settings.py
@@ -3,11 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, os
+
+import os
+
+import frappe
 from frappe import _
-from frappe.utils import get_url, nowdate, date_diff
-from frappe.model.document import Document
 from frappe.contacts.doctype.contact.contact import get_default_contact
+from frappe.model.document import Document
+from frappe.utils import date_diff, get_url, nowdate
+
 
 class EmailMissing(frappe.ValidationError): pass
 
diff --git a/erpnext/regional/doctype/gst_settings/test_gst_settings.py b/erpnext/regional/doctype/gst_settings/test_gst_settings.py
index d118dee..836d3a8 100644
--- a/erpnext/regional/doctype/gst_settings/test_gst_settings.py
+++ b/erpnext/regional/doctype/gst_settings/test_gst_settings.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestGSTSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/regional/doctype/gstr_3b_report/gstr_3b_report.py b/erpnext/regional/doctype/gstr_3b_report/gstr_3b_report.py
index 0ee5b09..d8ce319 100644
--- a/erpnext/regional/doctype/gstr_3b_report/gstr_3b_report.py
+++ b/erpnext/regional/doctype/gstr_3b_report/gstr_3b_report.py
@@ -3,15 +3,19 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import os
+
 import json
+import os
+
 import frappe
-from six import iteritems
 from frappe import _
 from frappe.model.document import Document
-from frappe.utils import flt, cstr
+from frappe.utils import cstr, flt
+from six import iteritems
+
 from erpnext.regional.india import state_numbers
 
+
 class GSTR3BReport(Document):
 	def validate(self):
 		self.get_data()
diff --git a/erpnext/regional/doctype/gstr_3b_report/test_gstr_3b_report.py b/erpnext/regional/doctype/gstr_3b_report/test_gstr_3b_report.py
index 065f80d..115f9b8 100644
--- a/erpnext/regional/doctype/gstr_3b_report/test_gstr_3b_report.py
+++ b/erpnext/regional/doctype/gstr_3b_report/test_gstr_3b_report.py
@@ -3,13 +3,15 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
-import unittest
-from frappe.utils import getdate
-from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
-from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import make_purchase_invoice
-from erpnext.stock.doctype.item.test_item import make_item
 import json
+import unittest
+
+import frappe
+from frappe.utils import getdate
+
+from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import make_purchase_invoice
+from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
+from erpnext.stock.doctype.item.test_item import make_item
 
 test_dependencies = ["Territory", "Customer Group", "Supplier Group", "Item"]
 
diff --git a/erpnext/regional/doctype/import_supplier_invoice/import_supplier_invoice.py b/erpnext/regional/doctype/import_supplier_invoice/import_supplier_invoice.py
index 0030053..76cb621 100644
--- a/erpnext/regional/doctype/import_supplier_invoice/import_supplier_invoice.py
+++ b/erpnext/regional/doctype/import_supplier_invoice/import_supplier_invoice.py
@@ -3,21 +3,21 @@
 
 from __future__ import unicode_literals
 
-from decimal import Decimal
-import json
 import re
-import traceback
 import zipfile
-import frappe, erpnext
+
+import dateutil
+import frappe
+from bs4 import BeautifulSoup as bs
 from frappe import _
 from frappe.model.document import Document
-from frappe.custom.doctype.custom_field.custom_field import create_custom_field
+from frappe.utils import flt, get_datetime_str, today
 from frappe.utils.data import format_datetime
-from bs4 import BeautifulSoup as bs
-from frappe.utils import cint, flt, today, nowdate, add_days, get_files_path, get_datetime_str
-import dateutil
 from frappe.utils.file_manager import save_file
 
+import erpnext
+
+
 class ImportSupplierInvoice(Document):
 	def validate(self):
 		if not frappe.db.get_value("Stock Settings", fieldname="stock_uom"):
diff --git a/erpnext/regional/doctype/import_supplier_invoice/test_import_supplier_invoice.py b/erpnext/regional/doctype/import_supplier_invoice/test_import_supplier_invoice.py
index d1caf77..4be4c3a 100644
--- a/erpnext/regional/doctype/import_supplier_invoice/test_import_supplier_invoice.py
+++ b/erpnext/regional/doctype/import_supplier_invoice/test_import_supplier_invoice.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestImportSupplierInvoice(unittest.TestCase):
 	pass
diff --git a/erpnext/regional/doctype/lower_deduction_certificate/lower_deduction_certificate.py b/erpnext/regional/doctype/lower_deduction_certificate/lower_deduction_certificate.py
index 656c329..d8553f1 100644
--- a/erpnext/regional/doctype/lower_deduction_certificate/lower_deduction_certificate.py
+++ b/erpnext/regional/doctype/lower_deduction_certificate/lower_deduction_certificate.py
@@ -3,12 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import getdate, get_link_to_form
 from frappe.model.document import Document
+from frappe.utils import get_link_to_form, getdate
+
 from erpnext.accounts.utils import get_fiscal_year
 
+
 class LowerDeductionCertificate(Document):
 	def validate(self):
 		self.validate_dates()
diff --git a/erpnext/regional/doctype/lower_deduction_certificate/test_lower_deduction_certificate.py b/erpnext/regional/doctype/lower_deduction_certificate/test_lower_deduction_certificate.py
index 7e95020..54443c0 100644
--- a/erpnext/regional/doctype/lower_deduction_certificate/test_lower_deduction_certificate.py
+++ b/erpnext/regional/doctype/lower_deduction_certificate/test_lower_deduction_certificate.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestLowerDeductionCertificate(unittest.TestCase):
 	pass
diff --git a/erpnext/regional/doctype/product_tax_category/product_tax_category.py b/erpnext/regional/doctype/product_tax_category/product_tax_category.py
index e476361..b6be9e0 100644
--- a/erpnext/regional/doctype/product_tax_category/product_tax_category.py
+++ b/erpnext/regional/doctype/product_tax_category/product_tax_category.py
@@ -4,5 +4,6 @@
 # import frappe
 from frappe.model.document import Document
 
+
 class ProductTaxCategory(Document):
 	pass
diff --git a/erpnext/regional/doctype/product_tax_category/test_product_tax_category.py b/erpnext/regional/doctype/product_tax_category/test_product_tax_category.py
index 53a5624..2668f23 100644
--- a/erpnext/regional/doctype/product_tax_category/test_product_tax_category.py
+++ b/erpnext/regional/doctype/product_tax_category/test_product_tax_category.py
@@ -4,5 +4,6 @@
 # import frappe
 import unittest
 
+
 class TestProductTaxCategory(unittest.TestCase):
 	pass
diff --git a/erpnext/regional/doctype/south_africa_vat_settings/south_africa_vat_settings.py b/erpnext/regional/doctype/south_africa_vat_settings/south_africa_vat_settings.py
index d74154b..4c3e8a7 100644
--- a/erpnext/regional/doctype/south_africa_vat_settings/south_africa_vat_settings.py
+++ b/erpnext/regional/doctype/south_africa_vat_settings/south_africa_vat_settings.py
@@ -4,5 +4,6 @@
 # import frappe
 from frappe.model.document import Document
 
+
 class SouthAfricaVATSettings(Document):
 	pass
diff --git a/erpnext/regional/doctype/south_africa_vat_settings/test_south_africa_vat_settings.py b/erpnext/regional/doctype/south_africa_vat_settings/test_south_africa_vat_settings.py
index 1c36652..0f19f25 100644
--- a/erpnext/regional/doctype/south_africa_vat_settings/test_south_africa_vat_settings.py
+++ b/erpnext/regional/doctype/south_africa_vat_settings/test_south_africa_vat_settings.py
@@ -4,5 +4,6 @@
 # import frappe
 import unittest
 
+
 class TestSouthAfricaVATSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/regional/doctype/tax_exemption_80g_certificate/tax_exemption_80g_certificate.py b/erpnext/regional/doctype/tax_exemption_80g_certificate/tax_exemption_80g_certificate.py
index 41a0f11..64b2ec5 100644
--- a/erpnext/regional/doctype/tax_exemption_80g_certificate/tax_exemption_80g_certificate.py
+++ b/erpnext/regional/doctype/tax_exemption_80g_certificate/tax_exemption_80g_certificate.py
@@ -3,12 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.model.document import Document
-from frappe.utils import getdate, flt, get_link_to_form
-from erpnext.accounts.utils import get_fiscal_year
 from frappe.contacts.doctype.address.address import get_company_address
+from frappe.model.document import Document
+from frappe.utils import flt, get_link_to_form, getdate
+
+from erpnext.accounts.utils import get_fiscal_year
+
 
 class TaxExemption80GCertificate(Document):
 	def validate(self):
diff --git a/erpnext/regional/doctype/tax_exemption_80g_certificate/test_tax_exemption_80g_certificate.py b/erpnext/regional/doctype/tax_exemption_80g_certificate/test_tax_exemption_80g_certificate.py
index 41b4203..74e9ced 100644
--- a/erpnext/regional/doctype/tax_exemption_80g_certificate/test_tax_exemption_80g_certificate.py
+++ b/erpnext/regional/doctype/tax_exemption_80g_certificate/test_tax_exemption_80g_certificate.py
@@ -3,14 +3,21 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
+import frappe
 from frappe.utils import getdate
+
 from erpnext.accounts.utils import get_fiscal_year
-from erpnext.non_profit.doctype.donation.test_donation import create_donor, create_mode_of_payment, create_donor_type
 from erpnext.non_profit.doctype.donation.donation import create_donation
-from erpnext.non_profit.doctype.membership.test_membership import setup_membership, make_membership
+from erpnext.non_profit.doctype.donation.test_donation import (
+	create_donor,
+	create_donor_type,
+	create_mode_of_payment,
+)
 from erpnext.non_profit.doctype.member.member import create_member
+from erpnext.non_profit.doctype.membership.test_membership import make_membership, setup_membership
+
 
 class TestTaxExemption80GCertificate(unittest.TestCase):
 	def setUp(self):
diff --git a/erpnext/regional/doctype/tax_exemption_80g_certificate_detail/tax_exemption_80g_certificate_detail.py b/erpnext/regional/doctype/tax_exemption_80g_certificate_detail/tax_exemption_80g_certificate_detail.py
index bdad798..76d8912 100644
--- a/erpnext/regional/doctype/tax_exemption_80g_certificate_detail/tax_exemption_80g_certificate_detail.py
+++ b/erpnext/regional/doctype/tax_exemption_80g_certificate_detail/tax_exemption_80g_certificate_detail.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class TaxExemption80GCertificateDetail(Document):
 	pass
diff --git a/erpnext/regional/doctype/uae_vat_account/uae_vat_account.py b/erpnext/regional/doctype/uae_vat_account/uae_vat_account.py
index 80d6b3a..a1b27d7 100644
--- a/erpnext/regional/doctype/uae_vat_account/uae_vat_account.py
+++ b/erpnext/regional/doctype/uae_vat_account/uae_vat_account.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class UAEVATAccount(Document):
 	pass
diff --git a/erpnext/regional/doctype/uae_vat_settings/test_uae_vat_settings.py b/erpnext/regional/doctype/uae_vat_settings/test_uae_vat_settings.py
index b88439f..cec30e6 100644
--- a/erpnext/regional/doctype/uae_vat_settings/test_uae_vat_settings.py
+++ b/erpnext/regional/doctype/uae_vat_settings/test_uae_vat_settings.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestUAEVATSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/regional/doctype/uae_vat_settings/uae_vat_settings.py b/erpnext/regional/doctype/uae_vat_settings/uae_vat_settings.py
index 20dc604..1bf37dd 100644
--- a/erpnext/regional/doctype/uae_vat_settings/uae_vat_settings.py
+++ b/erpnext/regional/doctype/uae_vat_settings/uae_vat_settings.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class UAEVATSettings(Document):
 	pass
diff --git a/erpnext/regional/france/utils.py b/erpnext/regional/france/utils.py
index 424615d..63c5a1f 100644
--- a/erpnext/regional/france/utils.py
+++ b/erpnext/regional/france/utils.py
@@ -2,7 +2,7 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 
 # don't remove this function it is used in tests
 def test_method():
diff --git a/erpnext/regional/germany/setup.py b/erpnext/regional/germany/setup.py
index c1fa6e4..a68cecc 100644
--- a/erpnext/regional/germany/setup.py
+++ b/erpnext/regional/germany/setup.py
@@ -1,4 +1,3 @@
-import os
 import frappe
 from frappe.custom.doctype.custom_field.custom_field import create_custom_fields
 
diff --git a/erpnext/regional/germany/utils/datev/datev_csv.py b/erpnext/regional/germany/utils/datev/datev_csv.py
index c5c2bc4..9d1fabb 100644
--- a/erpnext/regional/germany/utils/datev/datev_csv.py
+++ b/erpnext/regional/germany/utils/datev/datev_csv.py
@@ -4,12 +4,12 @@
 import datetime
 import zipfile
 from csv import QUOTE_NONNUMERIC
-from six import BytesIO
 
-import six
 import frappe
 import pandas as pd
 from frappe import _
+from six import BytesIO
+
 from .datev_constants import DataCategory
 
 
diff --git a/erpnext/regional/india/__init__.py b/erpnext/regional/india/__init__.py
index faeb36f..5c4d308 100644
--- a/erpnext/regional/india/__init__.py
+++ b/erpnext/regional/india/__init__.py
@@ -1,4 +1,5 @@
 from __future__ import unicode_literals
+
 from six import iteritems
 
 states = [
diff --git a/erpnext/regional/india/test_utils.py b/erpnext/regional/india/test_utils.py
index a16f56c..2c77c8d 100644
--- a/erpnext/regional/india/test_utils.py
+++ b/erpnext/regional/india/test_utils.py
@@ -1,8 +1,10 @@
 from __future__ import unicode_literals
 
 import unittest
-import frappe
 from unittest.mock import patch
+
+import frappe
+
 from erpnext.regional.india.utils import validate_document_name
 
 
diff --git a/erpnext/regional/india/utils.py b/erpnext/regional/india/utils.py
index ac31f77..635a1a1 100644
--- a/erpnext/regional/india/utils.py
+++ b/erpnext/regional/india/utils.py
@@ -1,19 +1,19 @@
 from __future__ import unicode_literals
-import frappe, re, json
+
+import json
+import re
+
+import frappe
 from frappe import _
-import erpnext
-from frappe.utils import cstr, flt, cint, date_diff, nowdate, round_based_on_smallest_currency_fraction, money_in_words, getdate
-from erpnext.regional.india import states, state_numbers
-from erpnext.controllers.taxes_and_totals import get_itemised_tax, get_itemised_taxable_amount
+from frappe.model.utils import get_fetch_values
+from frappe.utils import cint, cstr, date_diff, flt, getdate, nowdate
+from six import string_types
+
 from erpnext.controllers.accounts_controller import get_taxes_and_charges
+from erpnext.controllers.taxes_and_totals import get_itemised_tax, get_itemised_taxable_amount
 from erpnext.hr.utils import get_salary_assignment
 from erpnext.payroll.doctype.salary_structure.salary_structure import make_salary_slip
-from erpnext.regional.india import number_state_mapping
-from six import string_types
-from erpnext.accounts.general_ledger import make_gl_entries
-from erpnext.accounts.utils import get_account_currency
-from frappe.model.utils import get_fetch_values
-
+from erpnext.regional.india import number_state_mapping, state_numbers, states
 
 GST_INVOICE_NUMBER_FORMAT = re.compile(r"^[a-zA-Z0-9\-/]+$")   #alphanumeric and - /
 GSTIN_FORMAT = re.compile("^[0-9]{2}[A-Z]{4}[0-9A-Z]{1}[0-9]{4}[A-Z]{1}[1-9A-Z]{1}[1-9A-Z]{1}[0-9A-Z]{1}$")
diff --git a/erpnext/regional/italy/utils.py b/erpnext/regional/italy/utils.py
index 56f609e..d6c7f1d 100644
--- a/erpnext/regional/italy/utils.py
+++ b/erpnext/regional/italy/utils.py
@@ -2,12 +2,14 @@
 
 import io
 import json
+
 import frappe
-from frappe.utils import flt, cstr
-from erpnext.controllers.taxes_and_totals import get_itemised_tax
 from frappe import _
+from frappe.utils import cstr, flt
 from frappe.utils.file_manager import remove_file
 from six import string_types
+
+from erpnext.controllers.taxes_and_totals import get_itemised_tax
 from erpnext.regional.italy import state_codes
 
 
diff --git a/erpnext/regional/report/datev/datev.py b/erpnext/regional/report/datev/datev.py
index 9abdb3b..c46c0df 100644
--- a/erpnext/regional/report/datev/datev.py
+++ b/erpnext/regional/report/datev/datev.py
@@ -10,13 +10,18 @@
 from __future__ import unicode_literals
 
 import json
+
 import frappe
+from frappe import _
 from six import string_types
 
-from frappe import _
 from erpnext.accounts.utils import get_fiscal_year
-from erpnext.regional.germany.utils.datev.datev_csv import zip_and_download, get_datev_csv
-from erpnext.regional.germany.utils.datev.datev_constants import Transactions, DebtorsCreditors, AccountNames
+from erpnext.regional.germany.utils.datev.datev_constants import (
+	AccountNames,
+	DebtorsCreditors,
+	Transactions,
+)
+from erpnext.regional.germany.utils.datev.datev_csv import get_datev_csv, zip_and_download
 
 COLUMNS = [
 	{
diff --git a/erpnext/regional/report/datev/test_datev.py b/erpnext/regional/report/datev/test_datev.py
index 59b878e..b538893 100644
--- a/erpnext/regional/report/datev/test_datev.py
+++ b/erpnext/regional/report/datev/test_datev.py
@@ -2,21 +2,27 @@
 from __future__ import unicode_literals
 
 import zipfile
-import frappe
-from six import BytesIO
 from unittest import TestCase
-from frappe.utils import today, now_datetime, cstr
+
+import frappe
+from frappe.utils import cstr, now_datetime, today
+from six import BytesIO
+
 from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
-
-from erpnext.regional.report.datev.datev import validate
-from erpnext.regional.report.datev.datev import get_transactions
-from erpnext.regional.report.datev.datev import get_customers
-from erpnext.regional.report.datev.datev import get_suppliers
-from erpnext.regional.report.datev.datev import get_account_names
-from erpnext.regional.report.datev.datev import download_datev_csv
-
+from erpnext.regional.germany.utils.datev.datev_constants import (
+	AccountNames,
+	DebtorsCreditors,
+	Transactions,
+)
 from erpnext.regional.germany.utils.datev.datev_csv import get_datev_csv, get_header
-from erpnext.regional.germany.utils.datev.datev_constants import Transactions, DebtorsCreditors, AccountNames
+from erpnext.regional.report.datev.datev import (
+	download_datev_csv,
+	get_account_names,
+	get_customers,
+	get_suppliers,
+	get_transactions,
+)
+
 
 def make_company(company_name, abbr):
 	if not frappe.db.exists("Company", company_name):
diff --git a/erpnext/regional/report/electronic_invoice_register/electronic_invoice_register.py b/erpnext/regional/report/electronic_invoice_register/electronic_invoice_register.py
index 376ba3e..f4ce7a7 100644
--- a/erpnext/regional/report/electronic_invoice_register/electronic_invoice_register.py
+++ b/erpnext/regional/report/electronic_invoice_register/electronic_invoice_register.py
@@ -2,7 +2,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from erpnext.accounts.report.sales_register.sales_register import _execute
 
+
 def execute(filters=None):
 	return _execute(filters)
diff --git a/erpnext/regional/report/eway_bill/eway_bill.py b/erpnext/regional/report/eway_bill/eway_bill.py
index 09d5f79..c78084f 100644
--- a/erpnext/regional/report/eway_bill/eway_bill.py
+++ b/erpnext/regional/report/eway_bill/eway_bill.py
@@ -2,12 +2,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import json
 import re
+
+import frappe
 from frappe import _
 from frappe.utils import nowdate
 
+
 def execute(filters=None):
 	if not filters: filters.setdefault('posting_date', [nowdate(), nowdate()])
 	columns, data = [], []
diff --git "a/erpnext/regional/report/fichier_des_ecritures_comptables_\133fec\135/fichier_des_ecritures_comptables_\133fec\135.py" "b/erpnext/regional/report/fichier_des_ecritures_comptables_\133fec\135/fichier_des_ecritures_comptables_\133fec\135.py"
index 697058d..9567916 100644
--- "a/erpnext/regional/report/fichier_des_ecritures_comptables_\133fec\135/fichier_des_ecritures_comptables_\133fec\135.py"
+++ "b/erpnext/regional/report/fichier_des_ecritures_comptables_\133fec\135/fichier_des_ecritures_comptables_\133fec\135.py"
@@ -2,11 +2,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe.utils import format_datetime
-from frappe import _
+
 import re
 
+import frappe
+from frappe import _
+from frappe.utils import format_datetime
+
+
 def execute(filters=None):
 	account_details = {}
 	for acc in frappe.db.sql("""select name, is_group from tabAccount""", as_dict=1):
diff --git a/erpnext/regional/report/gst_itemised_purchase_register/gst_itemised_purchase_register.py b/erpnext/regional/report/gst_itemised_purchase_register/gst_itemised_purchase_register.py
index b5948f9..092f72a 100644
--- a/erpnext/regional/report/gst_itemised_purchase_register/gst_itemised_purchase_register.py
+++ b/erpnext/regional/report/gst_itemised_purchase_register/gst_itemised_purchase_register.py
@@ -3,7 +3,10 @@
 
 from __future__ import unicode_literals
 
-from erpnext.accounts.report.item_wise_purchase_register.item_wise_purchase_register import _execute
+from erpnext.accounts.report.item_wise_purchase_register.item_wise_purchase_register import (
+	_execute,
+)
+
 
 def execute(filters=None):
 	return _execute(filters, additional_table_columns=[
diff --git a/erpnext/regional/report/gst_itemised_sales_register/gst_itemised_sales_register.py b/erpnext/regional/report/gst_itemised_sales_register/gst_itemised_sales_register.py
index e13f509..44f623b 100644
--- a/erpnext/regional/report/gst_itemised_sales_register/gst_itemised_sales_register.py
+++ b/erpnext/regional/report/gst_itemised_sales_register/gst_itemised_sales_register.py
@@ -5,6 +5,7 @@
 
 from erpnext.accounts.report.item_wise_sales_register.item_wise_sales_register import _execute
 
+
 def execute(filters=None):
 	return _execute(filters, additional_table_columns=[
 		dict(fieldtype='Data', label='Customer GSTIN', fieldname="customer_gstin", width=120),
diff --git a/erpnext/regional/report/gst_purchase_register/gst_purchase_register.py b/erpnext/regional/report/gst_purchase_register/gst_purchase_register.py
index 12e9676..e972444 100644
--- a/erpnext/regional/report/gst_purchase_register/gst_purchase_register.py
+++ b/erpnext/regional/report/gst_purchase_register/gst_purchase_register.py
@@ -5,6 +5,7 @@
 
 from erpnext.accounts.report.purchase_register.purchase_register import _execute
 
+
 def execute(filters=None):
 	return _execute(filters, additional_table_columns=[
 		dict(fieldtype='Data', label='Supplier GSTIN', fieldname="supplier_gstin", width=120),
diff --git a/erpnext/regional/report/gst_sales_register/gst_sales_register.py b/erpnext/regional/report/gst_sales_register/gst_sales_register.py
index 075bd48..6975af3 100644
--- a/erpnext/regional/report/gst_sales_register/gst_sales_register.py
+++ b/erpnext/regional/report/gst_sales_register/gst_sales_register.py
@@ -5,6 +5,7 @@
 
 from erpnext.accounts.report.sales_register.sales_register import _execute
 
+
 def execute(filters=None):
 	return _execute(filters, additional_table_columns=[
 		dict(fieldtype='Data', label='Customer GSTIN', fieldname="customer_gstin", width=120),
diff --git a/erpnext/regional/report/gstr_1/gstr_1.py b/erpnext/regional/report/gstr_1/gstr_1.py
index 9d4f920..7c4731e 100644
--- a/erpnext/regional/report/gstr_1/gstr_1.py
+++ b/erpnext/regional/report/gstr_1/gstr_1.py
@@ -2,14 +2,18 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, json
-from frappe import _
-from frappe.utils import flt, formatdate, now_datetime, getdate
+
+import json
 from datetime import date
+
+import frappe
+from frappe import _
+from frappe.utils import flt, formatdate, getdate
 from six import iteritems
-from erpnext.regional.doctype.gstr_3b_report.gstr_3b_report import get_period
+
 from erpnext.regional.india.utils import get_gst_accounts
 
+
 def execute(filters=None):
 	return Gstr1Report(filters).run()
 
diff --git a/erpnext/regional/report/gstr_2/gstr_2.py b/erpnext/regional/report/gstr_2/gstr_2.py
index 616c2b8..5e44955 100644
--- a/erpnext/regional/report/gstr_2/gstr_2.py
+++ b/erpnext/regional/report/gstr_2/gstr_2.py
@@ -2,10 +2,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from datetime import date
+
+import frappe
+
 from erpnext.regional.report.gstr_1.gstr_1 import Gstr1Report
 
+
 def execute(filters=None):
 	return Gstr2Report(filters).run()
 
diff --git a/erpnext/regional/report/hsn_wise_summary_of_outward_supplies/hsn_wise_summary_of_outward_supplies.py b/erpnext/regional/report/hsn_wise_summary_of_outward_supplies/hsn_wise_summary_of_outward_supplies.py
index 1adddbd..7a938c7 100644
--- a/erpnext/regional/report/hsn_wise_summary_of_outward_supplies/hsn_wise_summary_of_outward_supplies.py
+++ b/erpnext/regional/report/hsn_wise_summary_of_outward_supplies/hsn_wise_summary_of_outward_supplies.py
@@ -2,16 +2,20 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
-from frappe import _
-from frappe.utils import flt, getdate, cstr
-from frappe.model.meta import get_field_precision
-from frappe.utils.xlsxutils import handle_html
-from six import iteritems
+
 import json
+
+import frappe
+from frappe import _
+from frappe.model.meta import get_field_precision
+from frappe.utils import cstr, flt, getdate
+from six import iteritems
+
+import erpnext
 from erpnext.regional.india.utils import get_gst_accounts
 from erpnext.regional.report.gstr_1.gstr_1 import get_company_gstin_number
 
+
 def execute(filters=None):
 	return _execute(filters)
 
diff --git a/erpnext/regional/report/irs_1099/irs_1099.py b/erpnext/regional/report/irs_1099/irs_1099.py
index f67d622..b1a5d10 100644
--- a/erpnext/regional/report/irs_1099/irs_1099.py
+++ b/erpnext/regional/report/irs_1099/irs_1099.py
@@ -3,16 +3,16 @@
 
 import json
 
-from PyPDF2 import PdfFileWriter
-
 import frappe
-from erpnext.accounts.utils import get_fiscal_year
 from frappe import _
 from frappe.utils import cstr, nowdate
 from frappe.utils.data import fmt_money
 from frappe.utils.jinja import render_template
 from frappe.utils.pdf import get_pdf
 from frappe.utils.print_format import read_multi_pdf
+from PyPDF2 import PdfFileWriter
+
+from erpnext.accounts.utils import get_fiscal_year
 
 IRS_1099_FORMS_FILE_EXTENSION = ".pdf"
 
diff --git a/erpnext/regional/report/professional_tax_deductions/professional_tax_deductions.py b/erpnext/regional/report/professional_tax_deductions/professional_tax_deductions.py
index 54808e5..5300b92 100644
--- a/erpnext/regional/report/professional_tax_deductions/professional_tax_deductions.py
+++ b/erpnext/regional/report/professional_tax_deductions/professional_tax_deductions.py
@@ -2,9 +2,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from erpnext.regional.report.provident_fund_deductions.provident_fund_deductions import get_conditions
+
+from erpnext.regional.report.provident_fund_deductions.provident_fund_deductions import (
+	get_conditions,
+)
+
 
 def execute(filters=None):
 	data = get_data(filters)
diff --git a/erpnext/regional/report/provident_fund_deductions/provident_fund_deductions.py b/erpnext/regional/report/provident_fund_deductions/provident_fund_deductions.py
index 82423f0..ae5d6b9 100644
--- a/erpnext/regional/report/provident_fund_deductions/provident_fund_deductions.py
+++ b/erpnext/regional/report/provident_fund_deductions/provident_fund_deductions.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import getdate
 from frappe import _
+from frappe.utils import getdate
+
 
 def execute(filters=None):
 	data = get_data(filters)
diff --git a/erpnext/regional/report/uae_vat_201/test_uae_vat_201.py b/erpnext/regional/report/uae_vat_201/test_uae_vat_201.py
index daa6976..e19aeaa 100644
--- a/erpnext/regional/report/uae_vat_201/test_uae_vat_201.py
+++ b/erpnext/regional/report/uae_vat_201/test_uae_vat_201.py
@@ -1,21 +1,23 @@
 # coding=utf-8
 from __future__ import unicode_literals
 
-import erpnext
-import frappe
 from unittest import TestCase
-from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
+
+import frappe
+
+import erpnext
 from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import make_purchase_invoice
-from erpnext.stock.doctype.warehouse.test_warehouse import get_warehouse_account
+from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
 from erpnext.regional.report.uae_vat_201.uae_vat_201 import (
-	get_total_emiratewise,
-	get_tourist_tax_return_total,
-	get_tourist_tax_return_tax,
-	get_zero_rated_total,
 	get_exempt_total,
-	get_standard_rated_expenses_total,
 	get_standard_rated_expenses_tax,
+	get_standard_rated_expenses_total,
+	get_total_emiratewise,
+	get_tourist_tax_return_tax,
+	get_tourist_tax_return_total,
+	get_zero_rated_total,
 )
+from erpnext.stock.doctype.warehouse.test_warehouse import get_warehouse_account
 
 test_dependencies = ["Territory", "Customer Group", "Supplier Group", "Item"]
 
diff --git a/erpnext/regional/report/uae_vat_201/uae_vat_201.py b/erpnext/regional/report/uae_vat_201/uae_vat_201.py
index b061423..f4c049d 100644
--- a/erpnext/regional/report/uae_vat_201/uae_vat_201.py
+++ b/erpnext/regional/report/uae_vat_201/uae_vat_201.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 def execute(filters=None):
 	columns = get_columns()
 	data, emirates, amounts_by_emirate = get_data(filters)
diff --git a/erpnext/regional/report/vat_audit_report/test_vat_audit_report.py b/erpnext/regional/report/vat_audit_report/test_vat_audit_report.py
index dea17a6..77beff3 100644
--- a/erpnext/regional/report/vat_audit_report/test_vat_audit_report.py
+++ b/erpnext/regional/report/vat_audit_report/test_vat_audit_report.py
@@ -2,16 +2,18 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from unittest import TestCase
+
+import frappe
 from frappe.utils import today
 
 from erpnext.accounts.doctype.account.test_account import create_account
-from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
 from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import make_purchase_invoice
-
+from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
 from erpnext.regional.report.vat_audit_report.vat_audit_report import execute
 
+
 class TestVATAuditReport(TestCase):
 	def setUp(self):
 		frappe.set_user("Administrator")
diff --git a/erpnext/regional/report/vat_audit_report/vat_audit_report.py b/erpnext/regional/report/vat_audit_report/vat_audit_report.py
index 88f6b92..3637bca 100644
--- a/erpnext/regional/report/vat_audit_report/vat_audit_report.py
+++ b/erpnext/regional/report/vat_audit_report/vat_audit_report.py
@@ -2,11 +2,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import json
+
+import frappe
 from frappe import _
 from frappe.utils import formatdate, get_link_to_form
 
+
 def execute(filters=None):
 	return VATAuditReport(filters).run()
 
diff --git a/erpnext/regional/united_arab_emirates/setup.py b/erpnext/regional/united_arab_emirates/setup.py
index bd12d66..8b19050 100644
--- a/erpnext/regional/united_arab_emirates/setup.py
+++ b/erpnext/regional/united_arab_emirates/setup.py
@@ -3,7 +3,7 @@
 
 from __future__ import unicode_literals
 
-import frappe, os, json
+import frappe
 from frappe.custom.doctype.custom_field.custom_field import create_custom_fields
 from frappe.permissions import add_permission, update_permission_property
 from erpnext.payroll.doctype.gratuity_rule.gratuity_rule import get_gratuity_rule
diff --git a/erpnext/regional/united_arab_emirates/utils.py b/erpnext/regional/united_arab_emirates/utils.py
index 7d5fd6e..66a9651 100644
--- a/erpnext/regional/united_arab_emirates/utils.py
+++ b/erpnext/regional/united_arab_emirates/utils.py
@@ -1,11 +1,14 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-import erpnext
-from frappe.utils import flt, round_based_on_smallest_currency_fraction, money_in_words
-from erpnext.controllers.taxes_and_totals import get_itemised_tax
+from frappe.utils import flt, money_in_words, round_based_on_smallest_currency_fraction
 from six import iteritems
 
+import erpnext
+from erpnext.controllers.taxes_and_totals import get_itemised_tax
+
+
 def update_itemised_tax_data(doc):
 	if not doc.taxes: return
 
diff --git a/erpnext/regional/united_states/test_united_states.py b/erpnext/regional/united_states/test_united_states.py
index 513570e..19e9a35 100644
--- a/erpnext/regional/united_states/test_united_states.py
+++ b/erpnext/regional/united_states/test_united_states.py
@@ -1,8 +1,11 @@
 # Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
-import frappe
+
 import unittest
+
+import frappe
+
 from erpnext.regional.report.irs_1099.irs_1099 import execute as execute_1099_report
 
 
diff --git a/erpnext/restaurant/doctype/restaurant/restaurant.py b/erpnext/restaurant/doctype/restaurant/restaurant.py
index 0bb7b69..486afc3 100644
--- a/erpnext/restaurant/doctype/restaurant/restaurant.py
+++ b/erpnext/restaurant/doctype/restaurant/restaurant.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class Restaurant(Document):
 	pass
diff --git a/erpnext/restaurant/doctype/restaurant/restaurant_dashboard.py b/erpnext/restaurant/doctype/restaurant/restaurant_dashboard.py
index adce5c7..5b78bb2 100644
--- a/erpnext/restaurant/doctype/restaurant/restaurant_dashboard.py
+++ b/erpnext/restaurant/doctype/restaurant/restaurant_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'restaurant',
diff --git a/erpnext/restaurant/doctype/restaurant/test_restaurant.py b/erpnext/restaurant/doctype/restaurant/test_restaurant.py
index 3ba7f57..574cd1f 100644
--- a/erpnext/restaurant/doctype/restaurant/test_restaurant.py
+++ b/erpnext/restaurant/doctype/restaurant/test_restaurant.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 test_records = [
diff --git a/erpnext/restaurant/doctype/restaurant_menu/restaurant_menu.py b/erpnext/restaurant/doctype/restaurant_menu/restaurant_menu.py
index 952c467..632f485 100644
--- a/erpnext/restaurant/doctype/restaurant_menu/restaurant_menu.py
+++ b/erpnext/restaurant/doctype/restaurant_menu/restaurant_menu.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 
+
 class RestaurantMenu(Document):
 	def validate(self):
 		for d in self.items:
diff --git a/erpnext/restaurant/doctype/restaurant_menu/test_restaurant_menu.py b/erpnext/restaurant/doctype/restaurant_menu/test_restaurant_menu.py
index 29f95fd..00cbf35 100644
--- a/erpnext/restaurant/doctype/restaurant_menu/test_restaurant_menu.py
+++ b/erpnext/restaurant/doctype/restaurant_menu/test_restaurant_menu.py
@@ -3,9 +3,10 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
 test_records = [
 	dict(doctype='Item', item_code='Food Item 1',
 		item_group='Products', is_stock_item=0),
diff --git a/erpnext/restaurant/doctype/restaurant_menu_item/restaurant_menu_item.py b/erpnext/restaurant/doctype/restaurant_menu_item/restaurant_menu_item.py
index cc86bb3..5d095f4 100644
--- a/erpnext/restaurant/doctype/restaurant_menu_item/restaurant_menu_item.py
+++ b/erpnext/restaurant/doctype/restaurant_menu_item/restaurant_menu_item.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class RestaurantMenuItem(Document):
 	pass
diff --git a/erpnext/restaurant/doctype/restaurant_order_entry/restaurant_order_entry.py b/erpnext/restaurant/doctype/restaurant_order_entry/restaurant_order_entry.py
index 357deaa..1ed5921 100644
--- a/erpnext/restaurant/doctype/restaurant_order_entry/restaurant_order_entry.py
+++ b/erpnext/restaurant/doctype/restaurant_order_entry/restaurant_order_entry.py
@@ -3,11 +3,16 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, json
-from frappe.model.document import Document
+
+import json
+
+import frappe
 from frappe import _
+from frappe.model.document import Document
+
 from erpnext.controllers.queries import item_query
 
+
 class RestaurantOrderEntry(Document):
 	pass
 
diff --git a/erpnext/restaurant/doctype/restaurant_order_entry_item/restaurant_order_entry_item.py b/erpnext/restaurant/doctype/restaurant_order_entry_item/restaurant_order_entry_item.py
index e0c051b..ee8928b 100644
--- a/erpnext/restaurant/doctype/restaurant_order_entry_item/restaurant_order_entry_item.py
+++ b/erpnext/restaurant/doctype/restaurant_order_entry_item/restaurant_order_entry_item.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class RestaurantOrderEntryItem(Document):
 	pass
diff --git a/erpnext/restaurant/doctype/restaurant_reservation/restaurant_reservation.py b/erpnext/restaurant/doctype/restaurant_reservation/restaurant_reservation.py
index f96de44..f6d2a7c 100644
--- a/erpnext/restaurant/doctype/restaurant_reservation/restaurant_reservation.py
+++ b/erpnext/restaurant/doctype/restaurant_reservation/restaurant_reservation.py
@@ -3,11 +3,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe.model.document import Document
+
 from datetime import timedelta
+
+from frappe.model.document import Document
 from frappe.utils import get_datetime
 
+
 class RestaurantReservation(Document):
 	def validate(self):
 		if not self.reservation_end_time:
diff --git a/erpnext/restaurant/doctype/restaurant_reservation/test_restaurant_reservation.py b/erpnext/restaurant/doctype/restaurant_reservation/test_restaurant_reservation.py
index 71681b2..885da72 100644
--- a/erpnext/restaurant/doctype/restaurant_reservation/test_restaurant_reservation.py
+++ b/erpnext/restaurant/doctype/restaurant_reservation/test_restaurant_reservation.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestRestaurantReservation(unittest.TestCase):
 	pass
diff --git a/erpnext/restaurant/doctype/restaurant_table/restaurant_table.py b/erpnext/restaurant/doctype/restaurant_table/restaurant_table.py
index d5ea9d5..0b5d635 100644
--- a/erpnext/restaurant/doctype/restaurant_table/restaurant_table.py
+++ b/erpnext/restaurant/doctype/restaurant_table/restaurant_table.py
@@ -3,10 +3,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, re
+
+import re
+
 from frappe.model.document import Document
 from frappe.model.naming import make_autoname
 
+
 class RestaurantTable(Document):
 	def autoname(self):
 		prefix = re.sub('-+', '-', self.restaurant.replace(' ', '-'))
diff --git a/erpnext/restaurant/doctype/restaurant_table/test_restaurant_table.py b/erpnext/restaurant/doctype/restaurant_table/test_restaurant_table.py
index ffdb6f7..44059ae 100644
--- a/erpnext/restaurant/doctype/restaurant_table/test_restaurant_table.py
+++ b/erpnext/restaurant/doctype/restaurant_table/test_restaurant_table.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 test_records = [
diff --git a/erpnext/selling/doctype/customer/customer.py b/erpnext/selling/doctype/customer/customer.py
index 1164f40..4be8139 100644
--- a/erpnext/selling/doctype/customer/customer.py
+++ b/erpnext/selling/doctype/customer/customer.py
@@ -2,20 +2,26 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import json
-from frappe.model.naming import set_name_by_naming_series
-from frappe import _, msgprint
+
+import frappe
 import frappe.defaults
-from frappe.utils import flt, cint, cstr, today, get_formatted_email
+from frappe import _, msgprint
+from frappe.contacts.address_and_contact import (
+	delete_contact_and_address,
+	load_address_and_contact,
+)
 from frappe.desk.reportview import build_match_conditions, get_filters_cond
-from erpnext.utilities.transaction_base import TransactionBase
-from erpnext.accounts.party import validate_party_accounts, get_dashboard_info, get_timeline_data # keep this
-from frappe.contacts.address_and_contact import load_address_and_contact, delete_contact_and_address
-from frappe.model.rename_doc import update_linked_doctypes
 from frappe.model.mapper import get_mapped_doc
+from frappe.model.naming import set_name_by_naming_series
+from frappe.model.rename_doc import update_linked_doctypes
+from frappe.utils import cint, cstr, flt, get_formatted_email, today
 from frappe.utils.user import get_users_with_role
 
+from erpnext.accounts.party import get_dashboard_info, validate_party_accounts
+from erpnext.utilities.transaction_base import TransactionBase
+
 
 class Customer(TransactionBase):
 	def get_feed(self):
diff --git a/erpnext/selling/doctype/customer/test_customer.py b/erpnext/selling/doctype/customer/test_customer.py
index 3d3dffa..fd1db8f 100644
--- a/erpnext/selling/doctype/customer/test_customer.py
+++ b/erpnext/selling/doctype/customer/test_customer.py
@@ -3,13 +3,14 @@
 
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
-from erpnext.accounts.party import get_due_date
+import frappe
 from frappe.test_runner import make_test_records
-from erpnext.exceptions import PartyFrozen, PartyDisabled
 from frappe.utils import flt
+
+from erpnext.accounts.party import get_due_date
+from erpnext.exceptions import PartyDisabled, PartyFrozen
 from erpnext.selling.doctype.customer.customer import get_credit_limit, get_customer_outstanding
 from erpnext.tests.utils import create_test_contact_and_address
 
@@ -19,6 +20,7 @@
 
 from six import iteritems
 
+
 class TestCustomer(unittest.TestCase):
 	def setUp(self):
 		if not frappe.get_value('Item', '_Test Item'):
@@ -253,10 +255,10 @@
 		return get_customer_outstanding('_Test Customer', '_Test Company')
 
 	def test_customer_credit_limit(self):
-		from erpnext.stock.doctype.delivery_note.test_delivery_note import create_delivery_note
 		from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
-		from erpnext.selling.doctype.sales_order.test_sales_order import make_sales_order
 		from erpnext.selling.doctype.sales_order.sales_order import make_sales_invoice
+		from erpnext.selling.doctype.sales_order.test_sales_order import make_sales_order
+		from erpnext.stock.doctype.delivery_note.test_delivery_note import create_delivery_note
 
 		outstanding_amt = self.get_customer_outstanding_amount()
 		credit_limit = get_credit_limit('_Test Customer', '_Test Company')
diff --git a/erpnext/selling/doctype/customer_credit_limit/customer_credit_limit.py b/erpnext/selling/doctype/customer_credit_limit/customer_credit_limit.py
index 60a4a9a..53bcc1b 100644
--- a/erpnext/selling/doctype/customer_credit_limit/customer_credit_limit.py
+++ b/erpnext/selling/doctype/customer_credit_limit/customer_credit_limit.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class CustomerCreditLimit(Document):
 	pass
diff --git a/erpnext/selling/doctype/industry_type/industry_type.py b/erpnext/selling/doctype/industry_type/industry_type.py
index 7a30d65..6d413ec 100644
--- a/erpnext/selling/doctype/industry_type/industry_type.py
+++ b/erpnext/selling/doctype/industry_type/industry_type.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class IndustryType(Document):
 	pass
diff --git a/erpnext/selling/doctype/industry_type/test_industry_type.py b/erpnext/selling/doctype/industry_type/test_industry_type.py
index ebc6366..d6cf79b 100644
--- a/erpnext/selling/doctype/industry_type/test_industry_type.py
+++ b/erpnext/selling/doctype/industry_type/test_industry_type.py
@@ -2,6 +2,6 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-
 import frappe
+
 test_records = frappe.get_test_records('Industry Type')
diff --git a/erpnext/selling/doctype/installation_note/installation_note.py b/erpnext/selling/doctype/installation_note/installation_note.py
index ffcbb2d..128a941 100644
--- a/erpnext/selling/doctype/installation_note/installation_note.py
+++ b/erpnext/selling/doctype/installation_note/installation_note.py
@@ -2,15 +2,15 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
+import frappe
+from frappe import _
 from frappe.utils import cstr, getdate
 
-from frappe import _
 from erpnext.stock.utils import get_valid_serial_nos
-
 from erpnext.utilities.transaction_base import TransactionBase
 
+
 class InstallationNote(TransactionBase):
 	def __init__(self, *args, **kwargs):
 		super(InstallationNote, self).__init__(*args, **kwargs)
diff --git a/erpnext/selling/doctype/installation_note/test_installation_note.py b/erpnext/selling/doctype/installation_note/test_installation_note.py
index 553d070..abfda9c 100644
--- a/erpnext/selling/doctype/installation_note/test_installation_note.py
+++ b/erpnext/selling/doctype/installation_note/test_installation_note.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Installation Note')
diff --git a/erpnext/selling/doctype/installation_note_item/installation_note_item.py b/erpnext/selling/doctype/installation_note_item/installation_note_item.py
index 7e12052..862c2a1 100644
--- a/erpnext/selling/doctype/installation_note_item/installation_note_item.py
+++ b/erpnext/selling/doctype/installation_note_item/installation_note_item.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class InstallationNoteItem(Document):
 	pass
diff --git a/erpnext/selling/doctype/product_bundle/product_bundle.py b/erpnext/selling/doctype/product_bundle/product_bundle.py
index ae3482f..4c73916 100644
--- a/erpnext/selling/doctype/product_bundle/product_bundle.py
+++ b/erpnext/selling/doctype/product_bundle/product_bundle.py
@@ -2,13 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
+import frappe
+from frappe import _
+from frappe.model.document import Document
 from frappe.utils import get_link_to_form
 
-from frappe import _
-
-from frappe.model.document import Document
 
 class ProductBundle(Document):
 	def autoname(self):
diff --git a/erpnext/selling/doctype/product_bundle/test_product_bundle.py b/erpnext/selling/doctype/product_bundle/test_product_bundle.py
index 7d1d372..13bd2a3 100644
--- a/erpnext/selling/doctype/product_bundle/test_product_bundle.py
+++ b/erpnext/selling/doctype/product_bundle/test_product_bundle.py
@@ -3,8 +3,8 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-
 import frappe
+
 test_records = frappe.get_test_records('Product Bundle')
 
 def make_product_bundle(parent, items, qty=None):
diff --git a/erpnext/selling/doctype/product_bundle_item/product_bundle_item.py b/erpnext/selling/doctype/product_bundle_item/product_bundle_item.py
index 8721bfa..5f71a27 100644
--- a/erpnext/selling/doctype/product_bundle_item/product_bundle_item.py
+++ b/erpnext/selling/doctype/product_bundle_item/product_bundle_item.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ProductBundleItem(Document):
 	pass
diff --git a/erpnext/selling/doctype/quotation/quotation.py b/erpnext/selling/doctype/quotation/quotation.py
index 6cd03dd..99c43bf 100644
--- a/erpnext/selling/doctype/quotation/quotation.py
+++ b/erpnext/selling/doctype/quotation/quotation.py
@@ -2,10 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.mapper import get_mapped_doc
-from frappe.utils import flt, nowdate, getdate
 from frappe import _
+from frappe.model.mapper import get_mapped_doc
+from frappe.utils import flt, getdate, nowdate
 
 from erpnext.controllers.selling_controller import SellingController
 
diff --git a/erpnext/selling/doctype/quotation/quotation_dashboard.py b/erpnext/selling/doctype/quotation/quotation_dashboard.py
index d1bb788..9586cb1 100644
--- a/erpnext/selling/doctype/quotation/quotation_dashboard.py
+++ b/erpnext/selling/doctype/quotation/quotation_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'prevdoc_docname',
diff --git a/erpnext/selling/doctype/quotation/test_quotation.py b/erpnext/selling/doctype/quotation/test_quotation.py
index 8542600..a44089a 100644
--- a/erpnext/selling/doctype/quotation/test_quotation.py
+++ b/erpnext/selling/doctype/quotation/test_quotation.py
@@ -2,10 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-import frappe
-from frappe.utils import flt, add_days, nowdate, add_months, getdate
 import unittest
 
+import frappe
+from frappe.utils import add_days, add_months, flt, getdate, nowdate
+
 test_dependencies = ["Product Bundle"]
 
 
@@ -133,8 +134,10 @@
 
 	def test_create_quotation_with_margin(self):
 		from erpnext.selling.doctype.quotation.quotation import make_sales_order
-		from erpnext.selling.doctype.sales_order.sales_order \
-			import make_delivery_note, make_sales_invoice
+		from erpnext.selling.doctype.sales_order.sales_order import (
+			make_delivery_note,
+			make_sales_invoice,
+		)
 
 		rate_with_margin = flt((1500*18.75)/100 + 1500)
 
@@ -227,9 +230,9 @@
 		self.assertEqual(expired_quotation.status, "Expired")
 
 	def test_product_bundle_mapping_on_creating_so(self):
-		from erpnext.stock.doctype.item.test_item import make_item
 		from erpnext.selling.doctype.product_bundle.test_product_bundle import make_product_bundle
 		from erpnext.selling.doctype.quotation.quotation import make_sales_order
+		from erpnext.stock.doctype.item.test_item import make_item
 
 		make_item("_Test Product Bundle", {"is_stock_item": 0})
 		make_item("_Test Bundle Item 1", {"is_stock_item": 1})
@@ -258,8 +261,8 @@
 		self.assertEqual(quotation_packed_items, so_packed_items)
 
 	def test_product_bundle_price_calculation_when_calculate_bundle_price_is_unchecked(self):
-		from erpnext.stock.doctype.item.test_item import make_item
 		from erpnext.selling.doctype.product_bundle.test_product_bundle import make_product_bundle
+		from erpnext.stock.doctype.item.test_item import make_item
 
 		make_item("_Test Product Bundle", {"is_stock_item": 0})
 		bundle_item1 = make_item("_Test Bundle Item 1", {"is_stock_item": 1})
@@ -278,8 +281,8 @@
 		self.assertEqual(quotation.items[0].amount, 200)
 
 	def test_product_bundle_price_calculation_when_calculate_bundle_price_is_checked(self):
-		from erpnext.stock.doctype.item.test_item import make_item
 		from erpnext.selling.doctype.product_bundle.test_product_bundle import make_product_bundle
+		from erpnext.stock.doctype.item.test_item import make_item
 
 		make_item("_Test Product Bundle", {"is_stock_item": 0})
 		make_item("_Test Bundle Item 1", {"is_stock_item": 1})
diff --git a/erpnext/selling/doctype/quotation_item/quotation_item.py b/erpnext/selling/doctype/quotation_item/quotation_item.py
index 7384871..ea47249 100644
--- a/erpnext/selling/doctype/quotation_item/quotation_item.py
+++ b/erpnext/selling/doctype/quotation_item/quotation_item.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class QuotationItem(Document):
 	pass
diff --git a/erpnext/selling/doctype/sales_order/sales_order.py b/erpnext/selling/doctype/sales_order/sales_order.py
index 47ebfe9..9367609 100755
--- a/erpnext/selling/doctype/sales_order/sales_order.py
+++ b/erpnext/selling/doctype/sales_order/sales_order.py
@@ -2,24 +2,32 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import json
+
+import frappe
 import frappe.utils
-from frappe.utils import cstr, flt, getdate, cint, nowdate, add_days, get_link_to_form, strip_html
 from frappe import _
-from six import string_types
-from frappe.model.utils import get_fetch_values
-from frappe.model.mapper import get_mapped_doc
-from erpnext.stock.stock_balance import update_bin_qty, get_reserved_qty
-from frappe.desk.notifications import clear_doctype_notifications
 from frappe.contacts.doctype.address.address import get_company_address
+from frappe.desk.notifications import clear_doctype_notifications
+from frappe.model.mapper import get_mapped_doc
+from frappe.model.utils import get_fetch_values
+from frappe.utils import add_days, cint, cstr, flt, get_link_to_form, getdate, nowdate, strip_html
+from six import string_types
+
+from erpnext.accounts.doctype.sales_invoice.sales_invoice import (
+	unlink_inter_company_doc,
+	update_linked_doc,
+	validate_inter_company_party,
+)
 from erpnext.controllers.selling_controller import SellingController
+from erpnext.manufacturing.doctype.production_plan.production_plan import (
+	get_items_for_material_requests,
+)
 from erpnext.selling.doctype.customer.customer import check_credit_limit
-from erpnext.stock.doctype.item.item import get_item_defaults
 from erpnext.setup.doctype.item_group.item_group import get_item_group_defaults
-from erpnext.manufacturing.doctype.production_plan.production_plan import get_items_for_material_requests
-from erpnext.accounts.doctype.sales_invoice.sales_invoice import validate_inter_company_party, update_linked_doc,\
-	unlink_inter_company_doc
+from erpnext.stock.doctype.item.item import get_item_defaults
+from erpnext.stock.stock_balance import get_reserved_qty, update_bin_qty
 
 form_grid_templates = {
 	"items": "templates/form_grid/item_grid.html"
@@ -970,15 +978,15 @@
 	}, target_doc, set_missing_values)
 
 	set_delivery_date(doc.items, source_name)
-	
+
 	return doc
 
 def set_delivery_date(items, sales_order):
 	delivery_dates = frappe.get_all(
-		'Sales Order Item', 
+		'Sales Order Item',
 		filters = {
 			'parent': sales_order
-		}, 
+		},
 		fields = ['delivery_date', 'item_code']
 	)
 
diff --git a/erpnext/selling/doctype/sales_order/sales_order_dashboard.py b/erpnext/selling/doctype/sales_order/sales_order_dashboard.py
index 2a71c27..ee3c707 100644
--- a/erpnext/selling/doctype/sales_order/sales_order_dashboard.py
+++ b/erpnext/selling/doctype/sales_order/sales_order_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'sales_order',
diff --git a/erpnext/selling/doctype/sales_order/test_sales_order.py b/erpnext/selling/doctype/sales_order/test_sales_order.py
index 054791e..bbfe7c0 100644
--- a/erpnext/selling/doctype/sales_order/test_sales_order.py
+++ b/erpnext/selling/doctype/sales_order/test_sales_order.py
@@ -1,21 +1,29 @@
 # Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
+
 import json
 import unittest
+
 import frappe
 import frappe.permissions
-from frappe.utils import flt, add_days, nowdate, getdate
 from frappe.core.doctype.user_permission.test_user_permission import create_user
-from erpnext.selling.doctype.sales_order.sales_order \
-	import make_material_request, make_delivery_note, make_sales_invoice, WarehouseRequired
-from erpnext.stock.doctype.stock_entry.stock_entry_utils import make_stock_entry
-from erpnext.selling.doctype.sales_order.sales_order import make_work_orders
+from frappe.utils import add_days, flt, getdate, nowdate
+
 from erpnext.controllers.accounts_controller import update_child_qty_rate
-from erpnext.selling.doctype.sales_order.sales_order import make_raw_material_request
 from erpnext.manufacturing.doctype.blanket_order.test_blanket_order import make_blanket_order
 from erpnext.selling.doctype.product_bundle.test_product_bundle import make_product_bundle
+from erpnext.selling.doctype.sales_order.sales_order import (
+	WarehouseRequired,
+	make_delivery_note,
+	make_material_request,
+	make_raw_material_request,
+	make_sales_invoice,
+	make_work_orders,
+)
 from erpnext.stock.doctype.item.test_item import make_item
+from erpnext.stock.doctype.stock_entry.stock_entry_utils import make_stock_entry
+
 
 class TestSalesOrder(unittest.TestCase):
 
@@ -162,8 +170,8 @@
 		self.assertEqual(so.get("items")[0].delivered_qty, 9)
 
 		# Make return deliver note, sales invoice and check quantity
-		from erpnext.stock.doctype.delivery_note.test_delivery_note import create_delivery_note
 		from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
+		from erpnext.stock.doctype.delivery_note.test_delivery_note import create_delivery_note
 
 		dn1 = create_delivery_note(is_return=1, return_against=dn.name, qty=-3, do_not_submit=True)
 		dn1.items[0].against_sales_order = so.name
@@ -444,8 +452,8 @@
 		self.assertRaises(frappe.ValidationError, update_child_qty_rate,'Sales Order', trans_item, so.name)
 
 	def test_update_child_with_precision(self):
-		from frappe.model.meta import get_field_precision
 		from frappe.custom.doctype.property_setter.property_setter import make_property_setter
+		from frappe.model.meta import get_field_precision
 
 		precision = get_field_precision(frappe.get_meta("Sales Order Item").get_field("rate"))
 
@@ -731,9 +739,11 @@
 		frappe.db.set_value("Stock Settings", None, "auto_insert_price_list_rate_if_missing", 1)
 
 	def test_drop_shipping(self):
-		from erpnext.selling.doctype.sales_order.sales_order import make_purchase_order_for_default_supplier, \
-			update_status as so_update_status
 		from erpnext.buying.doctype.purchase_order.purchase_order import update_status
+		from erpnext.selling.doctype.sales_order.sales_order import (
+			make_purchase_order_for_default_supplier,
+		)
+		from erpnext.selling.doctype.sales_order.sales_order import update_status as so_update_status
 
 		# make items
 		po_item = make_item("_Test Item for Drop Shipping", {"is_stock_item": 1, "delivered_by_supplier": 1})
@@ -815,8 +825,10 @@
 		so.cancel()
 
 	def test_drop_shipping_partial_order(self):
-		from erpnext.selling.doctype.sales_order.sales_order import make_purchase_order_for_default_supplier, \
-			update_status as so_update_status
+		from erpnext.selling.doctype.sales_order.sales_order import (
+			make_purchase_order_for_default_supplier,
+		)
+		from erpnext.selling.doctype.sales_order.sales_order import update_status as so_update_status
 
 		# make items
 		po_item1 = make_item("_Test Item for Drop Shipping 1", {"is_stock_item": 1, "delivered_by_supplier": 1})
@@ -869,7 +881,9 @@
 
 	def test_drop_shipping_full_for_default_suppliers(self):
 		"""Test if multiple POs are generated in one go against different default suppliers."""
-		from erpnext.selling.doctype.sales_order.sales_order import make_purchase_order_for_default_supplier
+		from erpnext.selling.doctype.sales_order.sales_order import (
+			make_purchase_order_for_default_supplier,
+		)
 
 		if not frappe.db.exists("Item", "_Test Item for Drop Shipping 1"):
 			make_item("_Test Item for Drop Shipping 1", {"is_stock_item": 1, "delivered_by_supplier": 1})
@@ -908,7 +922,7 @@
 
 	def test_product_bundles_in_so_are_replaced_with_bundle_items_in_po(self):
 		"""
-			Tests if the the Product Bundles in the Items table of Sales Orders are replaced with 
+			Tests if the the Product Bundles in the Items table of Sales Orders are replaced with
 			their child items(from the Packed Items table) on creating a Purchase Order from it.
 		"""
 		from erpnext.selling.doctype.sales_order.sales_order import make_purchase_order
@@ -1075,8 +1089,7 @@
 			}]
 		})
 		so.submit()
-		from erpnext.manufacturing.doctype.work_order.test_work_order import \
-			make_wo_order_test_record
+		from erpnext.manufacturing.doctype.work_order.test_work_order import make_wo_order_test_record
 		work_order = make_wo_order_test_record(item=item.item_code,
 			qty=1, do_not_save=True)
 		work_order.fg_warehouse = "_Test Warehouse - _TC"
@@ -1084,8 +1097,9 @@
 		work_order.submit()
 		make_stock_entry(item_code=item.item_code, target="_Test Warehouse - _TC", qty=1)
 		item_serial_no = frappe.get_doc("Serial No", {"item_code": item.item_code})
-		from erpnext.manufacturing.doctype.work_order.work_order import \
-			make_stock_entry as make_production_stock_entry
+		from erpnext.manufacturing.doctype.work_order.work_order import (
+			make_stock_entry as make_production_stock_entry,
+		)
 		se = frappe.get_doc(make_production_stock_entry(work_order.name, "Manufacture", 1))
 		se.submit()
 		reserved_serial_no = se.get("items")[2].serial_no
@@ -1117,8 +1131,9 @@
 		si = make_sales_invoice(so.name)
 		si.update_stock = 0
 		si.submit()
-		from erpnext.accounts.doctype.sales_invoice.sales_invoice import \
-			make_delivery_note as make_delivery_note_from_invoice
+		from erpnext.accounts.doctype.sales_invoice.sales_invoice import (
+			make_delivery_note as make_delivery_note_from_invoice,
+		)
 		dn = make_delivery_note_from_invoice(si.name)
 		dn.save()
 		dn.submit()
@@ -1155,6 +1170,7 @@
 
 	def test_cancel_sales_order_after_cancel_payment_entry(self):
 		from erpnext.accounts.doctype.payment_entry.test_payment_entry import get_payment_entry
+
 		# make a sales order
 		so = make_sales_order()
 
@@ -1264,7 +1280,9 @@
 		self.assertRaises(frappe.ValidationError, so.cancel)
 
 	def test_payment_terms_are_fetched_when_creating_sales_invoice(self):
-		from erpnext.accounts.doctype.payment_entry.test_payment_entry import create_payment_terms_template
+		from erpnext.accounts.doctype.payment_entry.test_payment_entry import (
+			create_payment_terms_template,
+		)
 		from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
 
 		automatically_fetch_payment_terms()
diff --git a/erpnext/selling/doctype/sales_order_item/sales_order_item.py b/erpnext/selling/doctype/sales_order_item/sales_order_item.py
index 62afef3..772aa6c 100644
--- a/erpnext/selling/doctype/sales_order_item/sales_order_item.py
+++ b/erpnext/selling/doctype/sales_order_item/sales_order_item.py
@@ -2,10 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
+import frappe
 from frappe.model.document import Document
 
+
 class SalesOrderItem(Document):
 	pass
 
diff --git a/erpnext/selling/doctype/sales_partner_type/sales_partner_type.py b/erpnext/selling/doctype/sales_partner_type/sales_partner_type.py
index 68d289f..bdabef2 100644
--- a/erpnext/selling/doctype/sales_partner_type/sales_partner_type.py
+++ b/erpnext/selling/doctype/sales_partner_type/sales_partner_type.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class SalesPartnerType(Document):
 	pass
diff --git a/erpnext/selling/doctype/sales_partner_type/test_sales_partner_type.py b/erpnext/selling/doctype/sales_partner_type/test_sales_partner_type.py
index fb8f8b0..895b0ec 100644
--- a/erpnext/selling/doctype/sales_partner_type/test_sales_partner_type.py
+++ b/erpnext/selling/doctype/sales_partner_type/test_sales_partner_type.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestSalesPartnerType(unittest.TestCase):
 	pass
diff --git a/erpnext/selling/doctype/sales_team/sales_team.py b/erpnext/selling/doctype/sales_team/sales_team.py
index 28bea25..9b542c0 100644
--- a/erpnext/selling/doctype/sales_team/sales_team.py
+++ b/erpnext/selling/doctype/sales_team/sales_team.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class SalesTeam(Document):
 	pass
diff --git a/erpnext/selling/doctype/selling_settings/selling_settings.py b/erpnext/selling/doctype/selling_settings/selling_settings.py
index b54559a..5bed43e 100644
--- a/erpnext/selling/doctype/selling_settings/selling_settings.py
+++ b/erpnext/selling/doctype/selling_settings/selling_settings.py
@@ -4,13 +4,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-import frappe.defaults
-from frappe.utils import cint
 from frappe.custom.doctype.property_setter.property_setter import make_property_setter
+from frappe.model.document import Document
+from frappe.utils import cint
 from frappe.utils.nestedset import get_root_of
 
-from frappe.model.document import Document
 
 class SellingSettings(Document):
 	def on_update(self):
@@ -36,7 +36,7 @@
 
 	def toggle_editable_rate_for_bundle_items(self):
 		editable_bundle_item_rates = cint(self.editable_bundle_item_rates)
-		
+
 		make_property_setter("Packed Item", "rate", "read_only", not(editable_bundle_item_rates), "Check", validate_fields_for_doctype=False)
 
 	def set_default_customer_group_and_territory(self):
diff --git a/erpnext/selling/doctype/selling_settings/test_selling_settings.py b/erpnext/selling/doctype/selling_settings/test_selling_settings.py
index 961a54d..572a110 100644
--- a/erpnext/selling/doctype/selling_settings/test_selling_settings.py
+++ b/erpnext/selling/doctype/selling_settings/test_selling_settings.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestSellingSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/selling/doctype/sms_center/sms_center.py b/erpnext/selling/doctype/sms_center/sms_center.py
index 87846a8..45aee4e 100644
--- a/erpnext/selling/doctype/sms_center/sms_center.py
+++ b/erpnext/selling/doctype/sms_center/sms_center.py
@@ -2,14 +2,13 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-
-from frappe.utils import cstr
-from frappe import msgprint, _
-
-from frappe.model.document import Document
-
+from frappe import _, msgprint
 from frappe.core.doctype.sms_settings.sms_settings import send_sms
+from frappe.model.document import Document
+from frappe.utils import cstr
+
 
 class SMSCenter(Document):
 	@frappe.whitelist()
diff --git a/erpnext/selling/page/point_of_sale/point_of_sale.py b/erpnext/selling/page/point_of_sale/point_of_sale.py
index 8c652c9..b4338c9 100644
--- a/erpnext/selling/page/point_of_sale/point_of_sale.py
+++ b/erpnext/selling/page/point_of_sale/point_of_sale.py
@@ -2,12 +2,15 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import json
+
 import frappe
 from frappe.utils.nestedset import get_root_of
-from frappe.utils import cint
-from erpnext.accounts.doctype.pos_profile.pos_profile import get_item_groups
+
 from erpnext.accounts.doctype.pos_invoice.pos_invoice import get_stock_availability
+from erpnext.accounts.doctype.pos_profile.pos_profile import get_item_groups
+
 
 def search_by_term(search_term, warehouse, price_list):
 	result = search_for_serial_or_batch_or_barcode_number(search_term) or {}
diff --git a/erpnext/selling/page/sales_funnel/sales_funnel.py b/erpnext/selling/page/sales_funnel/sales_funnel.py
index 78aaa49..043a3e7 100644
--- a/erpnext/selling/page/sales_funnel/sales_funnel.py
+++ b/erpnext/selling/page/sales_funnel/sales_funnel.py
@@ -2,11 +2,13 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
-from frappe import _
-from erpnext.accounts.report.utils import convert
+import frappe
 import pandas as pd
+from frappe import _
+
+from erpnext.accounts.report.utils import convert
+
 
 def validate_filters(from_date, to_date, company):
 	if from_date and to_date and (from_date >= to_date):
diff --git a/erpnext/selling/report/address_and_contacts/address_and_contacts.py b/erpnext/selling/report/address_and_contacts/address_and_contacts.py
index f295333..fea19f9 100644
--- a/erpnext/selling/report/address_and_contacts/address_and_contacts.py
+++ b/erpnext/selling/report/address_and_contacts/address_and_contacts.py
@@ -2,10 +2,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-from six.moves import range
-from six import iteritems
-import frappe
 
+import frappe
+from six import iteritems
+from six.moves import range
 
 field_map = {
 	"Contact": [ "first_name", "last_name", "phone", "mobile_no", "email_id", "is_primary_contact" ],
diff --git a/erpnext/selling/report/available_stock_for_packing_items/available_stock_for_packing_items.py b/erpnext/selling/report/available_stock_for_packing_items/available_stock_for_packing_items.py
index 5523bad..c7040be 100644
--- a/erpnext/selling/report/available_stock_for_packing_items/available_stock_for_packing_items.py
+++ b/erpnext/selling/report/available_stock_for_packing_items/available_stock_for_packing_items.py
@@ -2,9 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.utils import flt
 
+
 def execute(filters=None):
 	if not filters: filters = {}
 
diff --git a/erpnext/selling/report/customer_acquisition_and_loyalty/customer_acquisition_and_loyalty.py b/erpnext/selling/report/customer_acquisition_and_loyalty/customer_acquisition_and_loyalty.py
index f15f63d..a29b5c8 100644
--- a/erpnext/selling/report/customer_acquisition_and_loyalty/customer_acquisition_and_loyalty.py
+++ b/erpnext/selling/report/customer_acquisition_and_loyalty/customer_acquisition_and_loyalty.py
@@ -2,11 +2,14 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import calendar
+
 import frappe
 from frappe import _
 from frappe.utils import cint, cstr, getdate
 
+
 def execute(filters=None):
 	common_columns = [
 		{
diff --git a/erpnext/selling/report/customer_credit_balance/customer_credit_balance.py b/erpnext/selling/report/customer_credit_balance/customer_credit_balance.py
index 6fb7666..ed2fbfd 100644
--- a/erpnext/selling/report/customer_credit_balance/customer_credit_balance.py
+++ b/erpnext/selling/report/customer_credit_balance/customer_credit_balance.py
@@ -2,10 +2,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import flt
-from erpnext.selling.doctype.customer.customer import get_customer_outstanding, get_credit_limit
+
+from erpnext.selling.doctype.customer.customer import get_credit_limit, get_customer_outstanding
+
 
 def execute(filters=None):
 	if not filters: filters = {}
diff --git a/erpnext/selling/report/customer_wise_item_price/customer_wise_item_price.py b/erpnext/selling/report/customer_wise_item_price/customer_wise_item_price.py
index eb9273a..535d551 100644
--- a/erpnext/selling/report/customer_wise_item_price/customer_wise_item_price.py
+++ b/erpnext/selling/report/customer_wise_item_price/customer_wise_item_price.py
@@ -4,10 +4,11 @@
 from __future__ import unicode_literals
 
 import frappe
+from frappe import _
+
 from erpnext import get_default_company
 from erpnext.accounts.party import get_party_details
 from erpnext.stock.get_item_details import get_price_list_rate_for
-from frappe import _
 
 
 def execute(filters=None):
diff --git a/erpnext/selling/report/inactive_customers/inactive_customers.py b/erpnext/selling/report/inactive_customers/inactive_customers.py
index e7aff36..c79efe2 100644
--- a/erpnext/selling/report/inactive_customers/inactive_customers.py
+++ b/erpnext/selling/report/inactive_customers/inactive_customers.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import cint
 from frappe import _
+from frappe.utils import cint
+
 
 def execute(filters=None):
 	if not filters: filters ={}
diff --git a/erpnext/selling/report/item_wise_sales_history/item_wise_sales_history.py b/erpnext/selling/report/item_wise_sales_history/item_wise_sales_history.py
index 1700fc7..5396312 100644
--- a/erpnext/selling/report/item_wise_sales_history/item_wise_sales_history.py
+++ b/erpnext/selling/report/item_wise_sales_history/item_wise_sales_history.py
@@ -2,11 +2,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import flt
 from frappe.utils.nestedset import get_descendants_of
 
+
 def execute(filters=None):
 	filters = frappe._dict(filters or {})
 	if filters.from_date > filters.to_date:
diff --git a/erpnext/selling/report/pending_so_items_for_purchase_request/pending_so_items_for_purchase_request.py b/erpnext/selling/report/pending_so_items_for_purchase_request/pending_so_items_for_purchase_request.py
index e89c451..f241a3e 100644
--- a/erpnext/selling/report/pending_so_items_for_purchase_request/pending_so_items_for_purchase_request.py
+++ b/erpnext/selling/report/pending_so_items_for_purchase_request/pending_so_items_for_purchase_request.py
@@ -2,10 +2,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import flt
 
+
 def execute(filters=None):
 	columns = get_columns()
 	data = get_data()
diff --git a/erpnext/selling/report/pending_so_items_for_purchase_request/test_pending_so_items_for_purchase_request.py b/erpnext/selling/report/pending_so_items_for_purchase_request/test_pending_so_items_for_purchase_request.py
index f2518f0..95e332a 100644
--- a/erpnext/selling/report/pending_so_items_for_purchase_request/test_pending_so_items_for_purchase_request.py
+++ b/erpnext/selling/report/pending_so_items_for_purchase_request/test_pending_so_items_for_purchase_request.py
@@ -2,12 +2,16 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import unittest
-from frappe.utils import nowdate, add_months
-from erpnext.selling.report.pending_so_items_for_purchase_request.pending_so_items_for_purchase_request\
-     import execute
+
+from frappe.utils import add_months, nowdate
+
 from erpnext.selling.doctype.sales_order.sales_order import make_material_request
 from erpnext.selling.doctype.sales_order.test_sales_order import make_sales_order
+from erpnext.selling.report.pending_so_items_for_purchase_request.pending_so_items_for_purchase_request import (
+	execute,
+)
 
 
 class TestPendingSOItemsForPurchaseRequest(unittest.TestCase):
diff --git a/erpnext/selling/report/quotation_trends/quotation_trends.py b/erpnext/selling/report/quotation_trends/quotation_trends.py
index 968e2ff..d2ee9a8 100644
--- a/erpnext/selling/report/quotation_trends/quotation_trends.py
+++ b/erpnext/selling/report/quotation_trends/quotation_trends.py
@@ -2,9 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe import _
-from erpnext.controllers.trends	import get_columns, get_data
+
+from erpnext.controllers.trends import get_columns, get_data
+
 
 def execute(filters=None):
 	if not filters: filters ={}
diff --git a/erpnext/selling/report/sales_analytics/sales_analytics.py b/erpnext/selling/report/sales_analytics/sales_analytics.py
index d036a1c..56bcb31 100644
--- a/erpnext/selling/report/sales_analytics/sales_analytics.py
+++ b/erpnext/selling/report/sales_analytics/sales_analytics.py
@@ -2,12 +2,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _, scrub
-from frappe.utils import getdate, flt, add_to_date, add_days
+from frappe.utils import add_days, add_to_date, flt, getdate
 from six import iteritems
+
 from erpnext.accounts.utils import get_fiscal_year
 
+
 def execute(filters=None):
 	return Analytics(filters).run()
 
@@ -293,7 +296,7 @@
 		return period
 
 	def get_period_date_ranges(self):
-		from dateutil.relativedelta import relativedelta, MO
+		from dateutil.relativedelta import MO, relativedelta
 		from_date, to_date = getdate(self.filters.from_date), getdate(self.filters.to_date)
 
 		increment = {
diff --git a/erpnext/selling/report/sales_analytics/test_analytics.py b/erpnext/selling/report/sales_analytics/test_analytics.py
index 4d81a1e..a180099 100644
--- a/erpnext/selling/report/sales_analytics/test_analytics.py
+++ b/erpnext/selling/report/sales_analytics/test_analytics.py
@@ -2,11 +2,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
-import frappe.defaults
+
 import unittest
-from erpnext.selling.report.sales_analytics.sales_analytics import execute
+
+import frappe
+
 from erpnext.selling.doctype.sales_order.test_sales_order import make_sales_order
+from erpnext.selling.report.sales_analytics.sales_analytics import execute
+
 
 class TestAnalytics(unittest.TestCase):
 	def test_sales_analytics(self):
diff --git a/erpnext/selling/report/sales_order_analysis/sales_order_analysis.py b/erpnext/selling/report/sales_order_analysis/sales_order_analysis.py
index 00dcd69..805c3d8 100644
--- a/erpnext/selling/report/sales_order_analysis/sales_order_analysis.py
+++ b/erpnext/selling/report/sales_order_analysis/sales_order_analysis.py
@@ -2,10 +2,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import copy
+
+import frappe
 from frappe import _
-from frappe.utils import flt, date_diff, getdate
+from frappe.utils import date_diff, flt, getdate
+
 
 def execute(filters=None):
 	if not filters:
diff --git a/erpnext/selling/report/sales_order_trends/sales_order_trends.py b/erpnext/selling/report/sales_order_trends/sales_order_trends.py
index de7d3f2..89daf44 100644
--- a/erpnext/selling/report/sales_order_trends/sales_order_trends.py
+++ b/erpnext/selling/report/sales_order_trends/sales_order_trends.py
@@ -2,9 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe import _
-from erpnext.controllers.trends	import get_columns,get_data
+
+from erpnext.controllers.trends import get_columns, get_data
+
 
 def execute(filters=None):
 	if not filters: filters ={}
diff --git a/erpnext/selling/report/sales_partner_commission_summary/sales_partner_commission_summary.py b/erpnext/selling/report/sales_partner_commission_summary/sales_partner_commission_summary.py
index 2c49d51..a84dec0 100644
--- a/erpnext/selling/report/sales_partner_commission_summary/sales_partner_commission_summary.py
+++ b/erpnext/selling/report/sales_partner_commission_summary/sales_partner_commission_summary.py
@@ -2,9 +2,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe import msgprint, _
-from frappe.utils import flt
+from frappe import _, msgprint
 
 
 def execute(filters=None):
diff --git a/erpnext/selling/report/sales_partner_target_variance_based_on_item_group/item_group_wise_sales_target_variance.py b/erpnext/selling/report/sales_partner_target_variance_based_on_item_group/item_group_wise_sales_target_variance.py
index 89cfa16..d4f49c71 100644
--- a/erpnext/selling/report/sales_partner_target_variance_based_on_item_group/item_group_wise_sales_target_variance.py
+++ b/erpnext/selling/report/sales_partner_target_variance_based_on_item_group/item_group_wise_sales_target_variance.py
@@ -2,12 +2,16 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import flt
-from erpnext.accounts.utils import get_fiscal_year
+
+from erpnext.accounts.doctype.monthly_distribution.monthly_distribution import (
+	get_periodwise_distribution_data,
+)
 from erpnext.accounts.report.financial_statements import get_period_list
-from erpnext.accounts.doctype.monthly_distribution.monthly_distribution import get_periodwise_distribution_data
+from erpnext.accounts.utils import get_fiscal_year
+
 
 def get_data_column(filters, partner_doctype):
 	data = []
diff --git a/erpnext/selling/report/sales_partner_target_variance_based_on_item_group/sales_partner_target_variance_based_on_item_group.py b/erpnext/selling/report/sales_partner_target_variance_based_on_item_group/sales_partner_target_variance_based_on_item_group.py
index 87ed5a8..de21c4a 100644
--- a/erpnext/selling/report/sales_partner_target_variance_based_on_item_group/sales_partner_target_variance_based_on_item_group.py
+++ b/erpnext/selling/report/sales_partner_target_variance_based_on_item_group/sales_partner_target_variance_based_on_item_group.py
@@ -2,8 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
-from erpnext.selling.report.sales_partner_target_variance_based_on_item_group.item_group_wise_sales_target_variance import get_data_column
+
+from erpnext.selling.report.sales_partner_target_variance_based_on_item_group.item_group_wise_sales_target_variance import (
+	get_data_column,
+)
+
 
 def execute(filters=None):
 	data = []
diff --git a/erpnext/selling/report/sales_partner_transaction_summary/sales_partner_transaction_summary.py b/erpnext/selling/report/sales_partner_transaction_summary/sales_partner_transaction_summary.py
index f07293d..39ec072 100644
--- a/erpnext/selling/report/sales_partner_transaction_summary/sales_partner_transaction_summary.py
+++ b/erpnext/selling/report/sales_partner_transaction_summary/sales_partner_transaction_summary.py
@@ -2,9 +2,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe import msgprint, _
-from frappe.utils import flt
+from frappe import _, msgprint
 
 
 def execute(filters=None):
diff --git a/erpnext/selling/report/sales_person_commission_summary/sales_person_commission_summary.py b/erpnext/selling/report/sales_person_commission_summary/sales_person_commission_summary.py
index 9917d72..13245b7 100644
--- a/erpnext/selling/report/sales_person_commission_summary/sales_person_commission_summary.py
+++ b/erpnext/selling/report/sales_person_commission_summary/sales_person_commission_summary.py
@@ -2,9 +2,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe import msgprint, _
-from frappe.utils import flt
+from frappe import _, msgprint
 
 
 def execute(filters=None):
diff --git a/erpnext/selling/report/sales_person_target_variance_based_on_item_group/sales_person_target_variance_based_on_item_group.py b/erpnext/selling/report/sales_person_target_variance_based_on_item_group/sales_person_target_variance_based_on_item_group.py
index ea9bbab..83a1c2c 100644
--- a/erpnext/selling/report/sales_person_target_variance_based_on_item_group/sales_person_target_variance_based_on_item_group.py
+++ b/erpnext/selling/report/sales_person_target_variance_based_on_item_group/sales_person_target_variance_based_on_item_group.py
@@ -2,8 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
-from erpnext.selling.report.sales_partner_target_variance_based_on_item_group.item_group_wise_sales_target_variance import get_data_column
+
+from erpnext.selling.report.sales_partner_target_variance_based_on_item_group.item_group_wise_sales_target_variance import (
+	get_data_column,
+)
+
 
 def execute(filters=None):
 	data = []
diff --git a/erpnext/selling/report/sales_person_wise_transaction_summary/sales_person_wise_transaction_summary.py b/erpnext/selling/report/sales_person_wise_transaction_summary/sales_person_wise_transaction_summary.py
index 41c7f76..9dc2923 100644
--- a/erpnext/selling/report/sales_person_wise_transaction_summary/sales_person_wise_transaction_summary.py
+++ b/erpnext/selling/report/sales_person_wise_transaction_summary/sales_person_wise_transaction_summary.py
@@ -2,11 +2,13 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe import msgprint, _
-from frappe.utils import flt
+from frappe import _, msgprint
+
 from erpnext import get_company_currency
 
+
 def execute(filters=None):
 	if not filters: filters = {}
 
diff --git a/erpnext/selling/report/territory_target_variance_based_on_item_group/territory_target_variance_based_on_item_group.py b/erpnext/selling/report/territory_target_variance_based_on_item_group/territory_target_variance_based_on_item_group.py
index b1d89cc..b340124 100644
--- a/erpnext/selling/report/territory_target_variance_based_on_item_group/territory_target_variance_based_on_item_group.py
+++ b/erpnext/selling/report/territory_target_variance_based_on_item_group/territory_target_variance_based_on_item_group.py
@@ -2,8 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
-from erpnext.selling.report.sales_partner_target_variance_based_on_item_group.item_group_wise_sales_target_variance import get_data_column
+
+from erpnext.selling.report.sales_partner_target_variance_based_on_item_group.item_group_wise_sales_target_variance import (
+	get_data_column,
+)
+
 
 def execute(filters=None):
 	data = []
diff --git a/erpnext/selling/report/territory_wise_sales/territory_wise_sales.py b/erpnext/selling/report/territory_wise_sales/territory_wise_sales.py
index e883500..c334381 100644
--- a/erpnext/selling/report/territory_wise_sales/territory_wise_sales.py
+++ b/erpnext/selling/report/territory_wise_sales/territory_wise_sales.py
@@ -2,10 +2,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from erpnext import get_default_currency
 from frappe import _
 
+from erpnext import get_default_currency
+
+
 def execute(filters=None):
 	filters = frappe._dict(filters)
 	columns = get_columns()
diff --git a/erpnext/selling/sales_common.js b/erpnext/selling/sales_common.js
index e440f33..955ef5e 100644
--- a/erpnext/selling/sales_common.js
+++ b/erpnext/selling/sales_common.js
@@ -90,7 +90,7 @@
 
 		this.frm.toggle_display("customer_name",
 			(this.frm.doc.customer_name && this.frm.doc.customer_name!==this.frm.doc.customer));
-		
+
 		this.toggle_editable_price_list_rate();
 	}
 
diff --git a/erpnext/setup/default_energy_point_rules.py b/erpnext/setup/default_energy_point_rules.py
index 8dbccc4..c41d000 100644
--- a/erpnext/setup/default_energy_point_rules.py
+++ b/erpnext/setup/default_energy_point_rules.py
@@ -1,4 +1,5 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
 doctype_rule_map = {
diff --git a/erpnext/setup/default_success_action.py b/erpnext/setup/default_success_action.py
index 827839f..be072fc 100644
--- a/erpnext/setup/default_success_action.py
+++ b/erpnext/setup/default_success_action.py
@@ -1,4 +1,5 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
 doctype_list = [
diff --git a/erpnext/setup/doctype/authorization_control/authorization_control.py b/erpnext/setup/doctype/authorization_control/authorization_control.py
index fec5c7c..332d7f4 100644
--- a/erpnext/setup/doctype/authorization_control/authorization_control.py
+++ b/erpnext/setup/doctype/authorization_control/authorization_control.py
@@ -2,11 +2,14 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import cstr, flt, has_common, comma_or
-from frappe import session, _
+from frappe import _, session
+from frappe.utils import comma_or, cstr, flt, has_common
+
 from erpnext.utilities.transaction_base import TransactionBase
 
+
 class AuthorizationControl(TransactionBase):
 	def get_appr_user_role(self, det, doctype_name, total, based_on, condition, item, company):
 		amt_list, appr_users, appr_roles = [], [], []
diff --git a/erpnext/setup/doctype/authorization_rule/authorization_rule.py b/erpnext/setup/doctype/authorization_rule/authorization_rule.py
index eb8e6eb..ab0f420 100644
--- a/erpnext/setup/doctype/authorization_rule/authorization_rule.py
+++ b/erpnext/setup/doctype/authorization_rule/authorization_rule.py
@@ -2,12 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-
-from frappe.utils import cstr, flt
-from frappe import _, msgprint
-
+from frappe import _
 from frappe.model.document import Document
+from frappe.utils import cstr, flt
+
 
 class AuthorizationRule(Document):
 	def check_duplicate_entry(self):
diff --git a/erpnext/setup/doctype/authorization_rule/test_authorization_rule.py b/erpnext/setup/doctype/authorization_rule/test_authorization_rule.py
index 332f103..8a0f664 100644
--- a/erpnext/setup/doctype/authorization_rule/test_authorization_rule.py
+++ b/erpnext/setup/doctype/authorization_rule/test_authorization_rule.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Authorization Rule')
diff --git a/erpnext/setup/doctype/brand/brand.py b/erpnext/setup/doctype/brand/brand.py
index a8d1cf8..4cfb018 100644
--- a/erpnext/setup/doctype/brand/brand.py
+++ b/erpnext/setup/doctype/brand/brand.py
@@ -2,11 +2,13 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import copy
 
+import frappe
 from frappe.model.document import Document
 
+
 class Brand(Document):
 	pass
 
diff --git a/erpnext/setup/doctype/brand/test_brand.py b/erpnext/setup/doctype/brand/test_brand.py
index 25ed86e..16873c9 100644
--- a/erpnext/setup/doctype/brand/test_brand.py
+++ b/erpnext/setup/doctype/brand/test_brand.py
@@ -2,6 +2,6 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-
 import frappe
+
 test_records = frappe.get_test_records('Brand')
diff --git a/erpnext/setup/doctype/company/company.py b/erpnext/setup/doctype/company/company.py
index 6dee2ad..6257d56 100644
--- a/erpnext/setup/doctype/company/company.py
+++ b/erpnext/setup/doctype/company/company.py
@@ -2,23 +2,24 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, os, json
-from frappe import _
-from frappe.utils import get_timestamp
 
-from frappe.utils import cint, today, formatdate
-import frappe.defaults
-from frappe.cache_manager import clear_defaults_cache
-
-from frappe.model.document import Document
-from frappe.contacts.address_and_contact import load_address_and_contact
-from frappe.utils.nestedset import NestedSet
-
-from past.builtins import cmp
 import functools
+import json
+import os
+
+import frappe
+import frappe.defaults
+from frappe import _
+from frappe.cache_manager import clear_defaults_cache
+from frappe.contacts.address_and_contact import load_address_and_contact
+from frappe.utils import cint, formatdate, get_timestamp, today
+from frappe.utils.nestedset import NestedSet
+from past.builtins import cmp
+
 from erpnext.accounts.doctype.account.account import get_account_currency
 from erpnext.setup.setup_wizard.operations.taxes_setup import setup_taxes_and_charges
 
+
 class Company(NestedSet):
 	nsm_parent_field = 'parent_company'
 
@@ -479,8 +480,9 @@
 
 def update_company_monthly_sales(company):
 	'''Cache past year monthly sales of every company based on sales invoices'''
-	from frappe.utils.goal import get_monthly_results
 	import json
+
+	from frappe.utils.goal import get_monthly_results
 	filter_str = "company = {0} and status != 'Draft' and docstatus=1".format(frappe.db.escape(company))
 	month_to_value_dict = get_monthly_results("Sales Invoice", "base_grand_total",
 		"posting_date", filter_str, "sum")
diff --git a/erpnext/setup/doctype/company/company_dashboard.py b/erpnext/setup/doctype/company/company_dashboard.py
index 2d76028..3afea09 100644
--- a/erpnext/setup/doctype/company/company_dashboard.py
+++ b/erpnext/setup/doctype/company/company_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'graph': True,
diff --git a/erpnext/setup/doctype/company/test_company.py b/erpnext/setup/doctype/company/test_company.py
index 1b7fd4f..abc4689 100644
--- a/erpnext/setup/doctype/company/test_company.py
+++ b/erpnext/setup/doctype/company/test_company.py
@@ -2,12 +2,16 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-import frappe
-import unittest
 import json
+import unittest
+
+import frappe
 from frappe import _
 from frappe.utils import random_string
-from erpnext.accounts.doctype.account.chart_of_accounts.chart_of_accounts import get_charts_for_country
+
+from erpnext.accounts.doctype.account.chart_of_accounts.chart_of_accounts import (
+	get_charts_for_country,
+)
 
 test_ignore = ["Account", "Cost Center", "Payment Terms Template", "Salary Component", "Warehouse"]
 test_dependencies = ["Fiscal Year"]
diff --git a/erpnext/setup/doctype/currency_exchange/currency_exchange.py b/erpnext/setup/doctype/currency_exchange/currency_exchange.py
index 6480f60..0b86e29 100644
--- a/erpnext/setup/doctype/currency_exchange/currency_exchange.py
+++ b/erpnext/setup/doctype/currency_exchange/currency_exchange.py
@@ -4,10 +4,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe import _, throw
 from frappe.model.document import Document
-from frappe.utils import get_datetime_str, formatdate, nowdate, cint
+from frappe.utils import cint, formatdate, get_datetime_str, nowdate
+
 
 class CurrencyExchange(Document):
 	def autoname(self):
diff --git a/erpnext/setup/doctype/currency_exchange/test_currency_exchange.py b/erpnext/setup/doctype/currency_exchange/test_currency_exchange.py
index 0eb7e7b..2b007e9 100644
--- a/erpnext/setup/doctype/currency_exchange/test_currency_exchange.py
+++ b/erpnext/setup/doctype/currency_exchange/test_currency_exchange.py
@@ -1,11 +1,13 @@
 # Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 
-import frappe, unittest
+import unittest
 from unittest import mock
-from frappe.utils import flt
+
+import frappe
+from frappe.utils import cint, flt
+
 from erpnext.setup.utils import get_exchange_rate
-from frappe.utils import cint
 
 test_records = frappe.get_test_records('Currency Exchange')
 
diff --git a/erpnext/setup/doctype/customer_group/customer_group.py b/erpnext/setup/doctype/customer_group/customer_group.py
index c06669b..6e72810 100644
--- a/erpnext/setup/doctype/customer_group/customer_group.py
+++ b/erpnext/setup/doctype/customer_group/customer_group.py
@@ -2,11 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-
-
 from frappe.utils.nestedset import NestedSet, get_root_of
+
+
 class CustomerGroup(NestedSet):
 	nsm_parent_field = 'parent_customer_group'
 	def validate(self):
diff --git a/erpnext/setup/doctype/customer_group/test_customer_group.py b/erpnext/setup/doctype/customer_group/test_customer_group.py
index ec90b37..e04b79b 100644
--- a/erpnext/setup/doctype/customer_group/test_customer_group.py
+++ b/erpnext/setup/doctype/customer_group/test_customer_group.py
@@ -7,4 +7,5 @@
 
 
 import frappe
+
 test_records = frappe.get_test_records('Customer Group')
diff --git a/erpnext/setup/doctype/email_digest/email_digest.py b/erpnext/setup/doctype/email_digest/email_digest.py
index 217829f..4e9a8cc 100644
--- a/erpnext/setup/doctype/email_digest/email_digest.py
+++ b/erpnext/setup/doctype/email_digest/email_digest.py
@@ -2,19 +2,34 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe import _
-from frappe.utils import (fmt_money, formatdate, format_time, now_datetime,
-	get_url_to_form, get_url_to_list, flt, get_link_to_report, add_to_date, today)
+
 from datetime import timedelta
-from dateutil.relativedelta import relativedelta
-from frappe.core.doctype.user.user import STANDARD_USERS
+
+import frappe
 import frappe.desk.notifications
+from dateutil.relativedelta import relativedelta
+from frappe import _
+from frappe.core.doctype.user.user import STANDARD_USERS
+from frappe.utils import (
+	add_to_date,
+	flt,
+	fmt_money,
+	format_time,
+	formatdate,
+	get_link_to_report,
+	get_url_to_form,
+	get_url_to_list,
+	now_datetime,
+	today,
+)
+
 from erpnext.accounts.utils import get_balance_on, get_count_on, get_fiscal_year
 
 user_specific_content = ["calendar_events", "todo_list"]
 
 from frappe.model.document import Document
+
+
 class EmailDigest(Document):
 	def __init__(self, *args, **kwargs):
 		super(EmailDigest, self).__init__(*args, **kwargs)
diff --git a/erpnext/setup/doctype/email_digest/quotes.py b/erpnext/setup/doctype/email_digest/quotes.py
index 5451ee1..c77fe82 100644
--- a/erpnext/setup/doctype/email_digest/quotes.py
+++ b/erpnext/setup/doctype/email_digest/quotes.py
@@ -1,7 +1,9 @@
 # -*- coding: utf-8 -*-
 from __future__ import unicode_literals
+
 import random
 
+
 def get_random_quote():
 	quotes = [
 		("Start by doing what's necessary; then do what's possible; and suddenly you are doing the impossible.", "Francis of Assisi"),
diff --git a/erpnext/setup/doctype/email_digest/test_email_digest.py b/erpnext/setup/doctype/email_digest/test_email_digest.py
index afe693a..b3d0ce3 100644
--- a/erpnext/setup/doctype/email_digest/test_email_digest.py
+++ b/erpnext/setup/doctype/email_digest/test_email_digest.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Email Digest')
diff --git a/erpnext/setup/doctype/email_digest_recipient/email_digest_recipient.py b/erpnext/setup/doctype/email_digest_recipient/email_digest_recipient.py
index 968c51c..5c8d695 100644
--- a/erpnext/setup/doctype/email_digest_recipient/email_digest_recipient.py
+++ b/erpnext/setup/doctype/email_digest_recipient/email_digest_recipient.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class EmailDigestRecipient(Document):
 	pass
diff --git a/erpnext/setup/doctype/global_defaults/global_defaults.py b/erpnext/setup/doctype/global_defaults/global_defaults.py
index a0ba1ef..66d3b9e 100644
--- a/erpnext/setup/doctype/global_defaults/global_defaults.py
+++ b/erpnext/setup/doctype/global_defaults/global_defaults.py
@@ -2,11 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 """Global Defaults"""
 import frappe
 import frappe.defaults
-from frappe.utils import cint
 from frappe.custom.doctype.property_setter.property_setter import make_property_setter
+from frappe.utils import cint
 
 keydict = {
 	# "key in defaults": "key in Global Defaults"
@@ -22,6 +23,7 @@
 
 from frappe.model.document import Document
 
+
 class GlobalDefaults(Document):
 
 	def on_update(self):
diff --git a/erpnext/setup/doctype/global_defaults/test_global_defaults.py b/erpnext/setup/doctype/global_defaults/test_global_defaults.py
index 0495af7..70a7c08 100644
--- a/erpnext/setup/doctype/global_defaults/test_global_defaults.py
+++ b/erpnext/setup/doctype/global_defaults/test_global_defaults.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestGlobalDefaults(unittest.TestCase):
 	pass
diff --git a/erpnext/setup/doctype/item_group/item_group.py b/erpnext/setup/doctype/item_group/item_group.py
index c46b6cc..ddf3e66 100644
--- a/erpnext/setup/doctype/item_group/item_group.py
+++ b/erpnext/setup/doctype/item_group/item_group.py
@@ -2,19 +2,22 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import copy
+
+import frappe
 from frappe import _
-from frappe.utils import nowdate, cint, cstr
+from frappe.utils import cint, cstr, nowdate
 from frappe.utils.nestedset import NestedSet
-from frappe.website.website_generator import WebsiteGenerator
 from frappe.website.utils import clear_cache
-from frappe.website.doctype.website_slideshow.website_slideshow import get_slideshow
-from erpnext.shopping_cart.product_info import set_product_info_for_website
-from erpnext.utilities.product import get_qty_in_stock
+from frappe.website.website_generator import WebsiteGenerator
 from six.moves.urllib.parse import quote
-from erpnext.shopping_cart.product_query import ProductQuery
+
 from erpnext.shopping_cart.filters import ProductFiltersBuilder
+from erpnext.shopping_cart.product_info import set_product_info_for_website
+from erpnext.shopping_cart.product_query import ProductQuery
+from erpnext.utilities.product import get_qty_in_stock
+
 
 class ItemGroup(NestedSet, WebsiteGenerator):
 	nsm_parent_field = 'parent_item_group'
diff --git a/erpnext/setup/doctype/item_group/test_item_group.py b/erpnext/setup/doctype/item_group/test_item_group.py
index 745b13a..a816f39 100644
--- a/erpnext/setup/doctype/item_group/test_item_group.py
+++ b/erpnext/setup/doctype/item_group/test_item_group.py
@@ -2,10 +2,18 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import print_function, unicode_literals
+
 import unittest
+
 import frappe
-from frappe.utils.nestedset import NestedSetRecursionError, NestedSetMultipleRootsError, \
-	NestedSetChildExistsError, NestedSetInvalidMergeError, rebuild_tree, get_ancestors_of
+from frappe.utils.nestedset import (
+	NestedSetChildExistsError,
+	NestedSetInvalidMergeError,
+	NestedSetMultipleRootsError,
+	NestedSetRecursionError,
+	get_ancestors_of,
+	rebuild_tree,
+)
 
 test_records = frappe.get_test_records('Item Group')
 
diff --git a/erpnext/setup/doctype/naming_series/naming_series.py b/erpnext/setup/doctype/naming_series/naming_series.py
index c5d5747..005cfec 100644
--- a/erpnext/setup/doctype/naming_series/naming_series.py
+++ b/erpnext/setup/doctype/naming_series/naming_series.py
@@ -2,15 +2,15 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-
-from frappe.utils import cstr, cint
-from frappe import msgprint, throw, _
-
+from frappe import _, msgprint, throw
+from frappe.core.doctype.doctype.doctype import validate_series
 from frappe.model.document import Document
 from frappe.model.naming import parse_naming_series
 from frappe.permissions import get_doctypes_with_read
-from frappe.core.doctype.doctype.doctype import validate_series
+from frappe.utils import cint, cstr
+
 
 class NamingSeriesNotSetError(frappe.ValidationError): pass
 
diff --git a/erpnext/setup/doctype/party_type/party_type.py b/erpnext/setup/doctype/party_type/party_type.py
index 96e6093..8424c7f 100644
--- a/erpnext/setup/doctype/party_type/party_type.py
+++ b/erpnext/setup/doctype/party_type/party_type.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 
+
 class PartyType(Document):
 	pass
 
diff --git a/erpnext/setup/doctype/party_type/test_party_type.py b/erpnext/setup/doctype/party_type/test_party_type.py
index 079fe2f..e5f2908 100644
--- a/erpnext/setup/doctype/party_type/test_party_type.py
+++ b/erpnext/setup/doctype/party_type/test_party_type.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Party Type')
diff --git a/erpnext/setup/doctype/print_heading/print_heading.py b/erpnext/setup/doctype/print_heading/print_heading.py
index 3d5cd2d..cf25638 100644
--- a/erpnext/setup/doctype/print_heading/print_heading.py
+++ b/erpnext/setup/doctype/print_heading/print_heading.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class PrintHeading(Document):
 	pass
diff --git a/erpnext/setup/doctype/print_heading/test_print_heading.py b/erpnext/setup/doctype/print_heading/test_print_heading.py
index b2be2e3..06f801a 100644
--- a/erpnext/setup/doctype/print_heading/test_print_heading.py
+++ b/erpnext/setup/doctype/print_heading/test_print_heading.py
@@ -2,6 +2,6 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-
 import frappe
+
 test_records = frappe.get_test_records('Print Heading')
diff --git a/erpnext/setup/doctype/quotation_lost_reason/quotation_lost_reason.py b/erpnext/setup/doctype/quotation_lost_reason/quotation_lost_reason.py
index 42c5a5a..9131cc3 100644
--- a/erpnext/setup/doctype/quotation_lost_reason/quotation_lost_reason.py
+++ b/erpnext/setup/doctype/quotation_lost_reason/quotation_lost_reason.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class QuotationLostReason(Document):
 	pass
diff --git a/erpnext/setup/doctype/quotation_lost_reason/test_quotation_lost_reason.py b/erpnext/setup/doctype/quotation_lost_reason/test_quotation_lost_reason.py
index f6b30b6..ab8d61f 100644
--- a/erpnext/setup/doctype/quotation_lost_reason/test_quotation_lost_reason.py
+++ b/erpnext/setup/doctype/quotation_lost_reason/test_quotation_lost_reason.py
@@ -2,6 +2,6 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-
 import frappe
+
 test_records = frappe.get_test_records('Quotation Lost Reason')
diff --git a/erpnext/setup/doctype/quotation_lost_reason_detail/quotation_lost_reason_detail.py b/erpnext/setup/doctype/quotation_lost_reason_detail/quotation_lost_reason_detail.py
index 7bb8d02..434f24e 100644
--- a/erpnext/setup/doctype/quotation_lost_reason_detail/quotation_lost_reason_detail.py
+++ b/erpnext/setup/doctype/quotation_lost_reason_detail/quotation_lost_reason_detail.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class QuotationLostReasonDetail(Document):
 	pass
diff --git a/erpnext/setup/doctype/sales_partner/sales_partner.py b/erpnext/setup/doctype/sales_partner/sales_partner.py
index 675f9ca..6c741a8 100644
--- a/erpnext/setup/doctype/sales_partner/sales_partner.py
+++ b/erpnext/setup/doctype/sales_partner/sales_partner.py
@@ -2,10 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
+from frappe.contacts.address_and_contact import load_address_and_contact
 from frappe.utils import cstr, filter_strip_join
 from frappe.website.website_generator import WebsiteGenerator
-from frappe.contacts.address_and_contact import load_address_and_contact
+
 
 class SalesPartner(WebsiteGenerator):
 	website = frappe._dict(
diff --git a/erpnext/setup/doctype/sales_partner/test_sales_partner.py b/erpnext/setup/doctype/sales_partner/test_sales_partner.py
index 4548a4e..6ece239 100644
--- a/erpnext/setup/doctype/sales_partner/test_sales_partner.py
+++ b/erpnext/setup/doctype/sales_partner/test_sales_partner.py
@@ -2,8 +2,8 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-
 import frappe
+
 test_records = frappe.get_test_records('Sales Partner')
 
 test_ignore = ["Item Group"]
diff --git a/erpnext/setup/doctype/sales_person/sales_person.py b/erpnext/setup/doctype/sales_person/sales_person.py
index 19c2e5b..c7cad6b 100644
--- a/erpnext/setup/doctype/sales_person/sales_person.py
+++ b/erpnext/setup/doctype/sales_person/sales_person.py
@@ -2,12 +2,15 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import flt
 from frappe.utils.nestedset import NestedSet, get_root_of
+
 from erpnext import get_default_currency
 
+
 class SalesPerson(NestedSet):
 	nsm_parent_field = 'parent_sales_person'
 
diff --git a/erpnext/setup/doctype/sales_person/sales_person_dashboard.py b/erpnext/setup/doctype/sales_person/sales_person_dashboard.py
index 662008e..61c1ba4 100644
--- a/erpnext/setup/doctype/sales_person/sales_person_dashboard.py
+++ b/erpnext/setup/doctype/sales_person/sales_person_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'heatmap': True,
diff --git a/erpnext/setup/doctype/sales_person/test_sales_person.py b/erpnext/setup/doctype/sales_person/test_sales_person.py
index 8313cb4..497aaad 100644
--- a/erpnext/setup/doctype/sales_person/test_sales_person.py
+++ b/erpnext/setup/doctype/sales_person/test_sales_person.py
@@ -5,6 +5,7 @@
 test_dependencies = ["Employee"]
 
 import frappe
+
 test_records = frappe.get_test_records('Sales Person')
 
 test_ignore = ["Item Group"]
diff --git a/erpnext/setup/doctype/supplier_group/supplier_group.py b/erpnext/setup/doctype/supplier_group/supplier_group.py
index 9d84f90..0ca3525 100644
--- a/erpnext/setup/doctype/supplier_group/supplier_group.py
+++ b/erpnext/setup/doctype/supplier_group/supplier_group.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.utils.nestedset import NestedSet, get_root_of
 
+
 class SupplierGroup(NestedSet):
 	nsm_parent_field = 'parent_supplier_group'
 
diff --git a/erpnext/setup/doctype/supplier_group/test_supplier_group.py b/erpnext/setup/doctype/supplier_group/test_supplier_group.py
index 0e3d23d..b3a6366 100644
--- a/erpnext/setup/doctype/supplier_group/test_supplier_group.py
+++ b/erpnext/setup/doctype/supplier_group/test_supplier_group.py
@@ -4,4 +4,5 @@
 from __future__ import unicode_literals
 
 import frappe
+
 test_records = frappe.get_test_records('Supplier Group')
diff --git a/erpnext/setup/doctype/target_detail/target_detail.py b/erpnext/setup/doctype/target_detail/target_detail.py
index 633be45..89cd814 100644
--- a/erpnext/setup/doctype/target_detail/target_detail.py
+++ b/erpnext/setup/doctype/target_detail/target_detail.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class TargetDetail(Document):
 	pass
diff --git a/erpnext/setup/doctype/terms_and_conditions/terms_and_conditions.py b/erpnext/setup/doctype/terms_and_conditions/terms_and_conditions.py
index 5b00ccb..8c9059f 100644
--- a/erpnext/setup/doctype/terms_and_conditions/terms_and_conditions.py
+++ b/erpnext/setup/doctype/terms_and_conditions/terms_and_conditions.py
@@ -2,15 +2,17 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
+import json
+
 import frappe
 from frappe import _, throw
-import json
 from frappe.model.document import Document
-from frappe.utils.jinja import validate_template
 from frappe.utils import cint
-
+from frappe.utils.jinja import validate_template
 from six import string_types
 
+
 class TermsandConditions(Document):
 	def validate(self):
 		if self.terms:
diff --git a/erpnext/setup/doctype/terms_and_conditions/test_terms_and_conditions.py b/erpnext/setup/doctype/terms_and_conditions/test_terms_and_conditions.py
index 6fea78f..abfa921 100644
--- a/erpnext/setup/doctype/terms_and_conditions/test_terms_and_conditions.py
+++ b/erpnext/setup/doctype/terms_and_conditions/test_terms_and_conditions.py
@@ -2,6 +2,6 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-
 import frappe
+
 test_records = frappe.get_test_records('Terms and Conditions')
diff --git a/erpnext/setup/doctype/territory/territory.py b/erpnext/setup/doctype/territory/territory.py
index 7eefe77..f61796b 100644
--- a/erpnext/setup/doctype/territory/territory.py
+++ b/erpnext/setup/doctype/territory/territory.py
@@ -2,12 +2,13 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe.utils import flt
-from frappe import _
 
+import frappe
+from frappe import _
+from frappe.utils import flt
 from frappe.utils.nestedset import NestedSet, get_root_of
 
+
 class Territory(NestedSet):
 	nsm_parent_field = 'parent_territory'
 
diff --git a/erpnext/setup/doctype/territory/test_territory.py b/erpnext/setup/doctype/territory/test_territory.py
index efe00c5..a3aa866 100644
--- a/erpnext/setup/doctype/territory/test_territory.py
+++ b/erpnext/setup/doctype/territory/test_territory.py
@@ -2,8 +2,8 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-
 import frappe
+
 test_records = frappe.get_test_records('Territory')
 
 test_ignore = ["Item Group"]
diff --git a/erpnext/setup/doctype/transaction_deletion_record/test_transaction_deletion_record.py b/erpnext/setup/doctype/transaction_deletion_record/test_transaction_deletion_record.py
index 933a8c3..aa0f79b 100644
--- a/erpnext/setup/doctype/transaction_deletion_record/test_transaction_deletion_record.py
+++ b/erpnext/setup/doctype/transaction_deletion_record/test_transaction_deletion_record.py
@@ -3,9 +3,11 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
+
 class TestTransactionDeletionRecord(unittest.TestCase):
 	def setUp(self):
 		create_company('Dunder Mifflin Paper Co')
diff --git a/erpnext/setup/doctype/transaction_deletion_record/transaction_deletion_record.py b/erpnext/setup/doctype/transaction_deletion_record/transaction_deletion_record.py
index 8a49155..efb038f 100644
--- a/erpnext/setup/doctype/transaction_deletion_record/transaction_deletion_record.py
+++ b/erpnext/setup/doctype/transaction_deletion_record/transaction_deletion_record.py
@@ -3,11 +3,13 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-from frappe.utils import cint
+
 import frappe
-from frappe.model.document import Document
 from frappe import _
 from frappe.desk.notifications import clear_notifications
+from frappe.model.document import Document
+from frappe.utils import cint
+
 
 class TransactionDeletionRecord(Document):
 	def validate(self):
diff --git a/erpnext/setup/doctype/transaction_deletion_record_item/transaction_deletion_record_item.py b/erpnext/setup/doctype/transaction_deletion_record_item/transaction_deletion_record_item.py
index 2176cb1..a113d50 100644
--- a/erpnext/setup/doctype/transaction_deletion_record_item/transaction_deletion_record_item.py
+++ b/erpnext/setup/doctype/transaction_deletion_record_item/transaction_deletion_record_item.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class TransactionDeletionRecordItem(Document):
 	pass
diff --git a/erpnext/setup/doctype/uom/test_uom.py b/erpnext/setup/doctype/uom/test_uom.py
index 330d303..e222c13 100644
--- a/erpnext/setup/doctype/uom/test_uom.py
+++ b/erpnext/setup/doctype/uom/test_uom.py
@@ -2,6 +2,6 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-
 import frappe
+
 test_records = frappe.get_test_records('UOM')
diff --git a/erpnext/setup/doctype/uom/uom.py b/erpnext/setup/doctype/uom/uom.py
index 404b84b..f0e97b3 100644
--- a/erpnext/setup/doctype/uom/uom.py
+++ b/erpnext/setup/doctype/uom/uom.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class UOM(Document):
 	pass
diff --git a/erpnext/setup/doctype/uom_conversion_factor/test_uom_conversion_factor.py b/erpnext/setup/doctype/uom_conversion_factor/test_uom_conversion_factor.py
index 04596ef..33795d6 100644
--- a/erpnext/setup/doctype/uom_conversion_factor/test_uom_conversion_factor.py
+++ b/erpnext/setup/doctype/uom_conversion_factor/test_uom_conversion_factor.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestUOMConversionFactor(unittest.TestCase):
 	pass
diff --git a/erpnext/setup/doctype/uom_conversion_factor/uom_conversion_factor.py b/erpnext/setup/doctype/uom_conversion_factor/uom_conversion_factor.py
index 3566c53..45342e9 100644
--- a/erpnext/setup/doctype/uom_conversion_factor/uom_conversion_factor.py
+++ b/erpnext/setup/doctype/uom_conversion_factor/uom_conversion_factor.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class UOMConversionFactor(Document):
 	pass
diff --git a/erpnext/setup/doctype/website_item_group/website_item_group.py b/erpnext/setup/doctype/website_item_group/website_item_group.py
index e416b50..2f72013 100644
--- a/erpnext/setup/doctype/website_item_group/website_item_group.py
+++ b/erpnext/setup/doctype/website_item_group/website_item_group.py
@@ -4,9 +4,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class WebsiteItemGroup(Document):
 	pass
diff --git a/erpnext/setup/install.py b/erpnext/setup/install.py
index bbee74c..cdc83c1 100644
--- a/erpnext/setup/install.py
+++ b/erpnext/setup/install.py
@@ -4,16 +4,18 @@
 from __future__ import print_function, unicode_literals
 
 import frappe
-from erpnext.accounts.doctype.cash_flow_mapper.default_cash_flow_mapper import DEFAULT_MAPPERS
-from .default_success_action import get_default_success_action
 from frappe import _
-from frappe.utils import cint
-from frappe.installer import update_site_config
-from frappe.desk.page.setup_wizard.setup_wizard import add_all_roles_to
 from frappe.custom.doctype.custom_field.custom_field import create_custom_field
-from erpnext.setup.default_energy_point_rules import get_default_energy_point_rules
+from frappe.desk.page.setup_wizard.setup_wizard import add_all_roles_to
+from frappe.installer import update_site_config
+from frappe.utils import cint
 from six import iteritems
 
+from erpnext.accounts.doctype.cash_flow_mapper.default_cash_flow_mapper import DEFAULT_MAPPERS
+from erpnext.setup.default_energy_point_rules import get_default_energy_point_rules
+
+from .default_success_action import get_default_success_action
+
 default_mail_footer = """<div style="padding: 7px; text-align: right; color: #888"><small>Sent via
 	<a style="color: #888" href="http://erpnext.org">ERPNext</a></div>"""
 
diff --git a/erpnext/setup/setup_wizard/data/dashboard_charts.py b/erpnext/setup/setup_wizard/data/dashboard_charts.py
index 9ce64eb..5369bba 100644
--- a/erpnext/setup/setup_wizard/data/dashboard_charts.py
+++ b/erpnext/setup/setup_wizard/data/dashboard_charts.py
@@ -1,8 +1,10 @@
 from __future__ import unicode_literals
-from frappe import _
-import frappe
+
 import json
 
+import frappe
+
+
 def get_company_for_dashboards():
 	company = frappe.defaults.get_defaults().company
 	if company:
diff --git a/erpnext/setup/setup_wizard/data/industry_type.py b/erpnext/setup/setup_wizard/data/industry_type.py
index 4fa9f8a..2c83a5c 100644
--- a/erpnext/setup/setup_wizard/data/industry_type.py
+++ b/erpnext/setup/setup_wizard/data/industry_type.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_industry_types():
 	return [
 		_('Accounting'),
diff --git a/erpnext/setup/setup_wizard/operations/company_setup.py b/erpnext/setup/setup_wizard/operations/company_setup.py
index 4833d93..bea3906 100644
--- a/erpnext/setup/setup_wizard/operations/company_setup.py
+++ b/erpnext/setup/setup_wizard/operations/company_setup.py
@@ -6,7 +6,6 @@
 from frappe import _
 from frappe.utils import cstr, getdate
 from .default_website import website_maker
-from erpnext.accounts.doctype.account.account import RootNotEditable
 
 def create_fiscal_year_and_company(args):
 	if (args.get('fy_start_date')):
diff --git a/erpnext/setup/setup_wizard/operations/default_website.py b/erpnext/setup/setup_wizard/operations/default_website.py
index 38b5c14..2288ae0 100644
--- a/erpnext/setup/setup_wizard/operations/default_website.py
+++ b/erpnext/setup/setup_wizard/operations/default_website.py
@@ -2,11 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
+import frappe
 from frappe import _
 from frappe.utils import nowdate
 
+
 class website_maker(object):
 	def __init__(self, args):
 		self.args = args
diff --git a/erpnext/setup/setup_wizard/operations/install_fixtures.py b/erpnext/setup/setup_wizard/operations/install_fixtures.py
index cd49a18..907967c 100644
--- a/erpnext/setup/setup_wizard/operations/install_fixtures.py
+++ b/erpnext/setup/setup_wizard/operations/install_fixtures.py
@@ -3,16 +3,20 @@
 
 from __future__ import unicode_literals
 
-import frappe, os, json
+import json
+import os
 
+import frappe
 from frappe import _
+from frappe.desk.doctype.global_search_settings.global_search_settings import (
+	update_global_search_doctypes,
+)
 from frappe.desk.page.setup_wizard.setup_wizard import make_records
 from frappe.utils import cstr, getdate
-from frappe.desk.doctype.global_search_settings.global_search_settings import update_global_search_doctypes
+from frappe.utils.nestedset import rebuild_tree
 
 from erpnext.accounts.doctype.account.account import RootNotEditable
 from erpnext.regional.address_template.setup import set_up_address_templates
-from frappe.utils.nestedset import rebuild_tree
 
 default_lead_sources = ["Existing Customer", "Reference", "Advertisement",
 	"Cold Calling", "Exhibition", "Supplier Reference", "Mass Mailing",
diff --git a/erpnext/setup/setup_wizard/operations/sample_data.py b/erpnext/setup/setup_wizard/operations/sample_data.py
index c6d9f08..3aef40d 100644
--- a/erpnext/setup/setup_wizard/operations/sample_data.py
+++ b/erpnext/setup/setup_wizard/operations/sample_data.py
@@ -3,11 +3,15 @@
 
 from __future__ import unicode_literals
 
+import json
+import os
+import random
+
 import frappe
-from frappe.utils.make_random import add_random_children
 import frappe.utils
-import random, os, json
 from frappe import _
+from frappe.utils.make_random import add_random_children
+
 
 def make_sample_data(domains, make_dependent = False):
 	"""Create a few opportunities, quotes, material requests, issues, todos, projects
diff --git a/erpnext/setup/setup_wizard/setup_wizard.py b/erpnext/setup/setup_wizard/setup_wizard.py
index 9275d1b..ecb07d5 100644
--- a/erpnext/setup/setup_wizard/setup_wizard.py
+++ b/erpnext/setup/setup_wizard/setup_wizard.py
@@ -6,7 +6,10 @@
 import frappe
 from frappe import _
 
-from .operations import install_fixtures as fixtures, company_setup, sample_data
+from .operations import company_setup
+from .operations import install_fixtures as fixtures
+from .operations import sample_data
+
 
 def get_setup_stages(args=None):
 	if frappe.db.sql("select name from tabCompany"):
diff --git a/erpnext/setup/setup_wizard/utils.py b/erpnext/setup/setup_wizard/utils.py
index 4223f00..30b88ae 100644
--- a/erpnext/setup/setup_wizard/utils.py
+++ b/erpnext/setup/setup_wizard/utils.py
@@ -1,8 +1,10 @@
 from __future__ import unicode_literals
-import json, os
+
+import json
+import os
 
 from frappe.desk.page.setup_wizard.setup_wizard import setup_complete
-from erpnext.setup.setup_wizard import setup_wizard
+
 
 def complete():
 	with open(os.path.join(os.path.dirname(__file__),
diff --git a/erpnext/setup/utils.py b/erpnext/setup/utils.py
index 409f776..2302a66 100644
--- a/erpnext/setup/utils.py
+++ b/erpnext/setup/utils.py
@@ -2,12 +2,14 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import flt, add_days
-from frappe.utils import get_datetime_str, nowdate
+from frappe.utils import add_days, flt, get_datetime_str, nowdate
+
 from erpnext import get_default_company
 
+
 def get_root_of(doctype):
 	"""Get root element of a DocType with a tree structure"""
 	result = frappe.db.sql_list("""select name from `tab%s`
diff --git a/erpnext/shopping_cart/cart.py b/erpnext/shopping_cart/cart.py
index e9f4bd5..3f1dfde 100644
--- a/erpnext/shopping_cart/cart.py
+++ b/erpnext/shopping_cart/cart.py
@@ -2,16 +2,20 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe import throw, _
 import frappe.defaults
-from frappe.utils import cint, flt, get_fullname, cstr
+from frappe import _, throw
 from frappe.contacts.doctype.address.address import get_address_display
-from erpnext.shopping_cart.doctype.shopping_cart_settings.shopping_cart_settings import get_shopping_cart_settings
-from frappe.utils.nestedset import get_root_of
-from erpnext.accounts.utils import get_account_name
-from erpnext.utilities.product import get_qty_in_stock
 from frappe.contacts.doctype.contact.contact import get_contact_name
+from frappe.utils import cint, cstr, flt, get_fullname
+from frappe.utils.nestedset import get_root_of
+
+from erpnext.accounts.utils import get_account_name
+from erpnext.shopping_cart.doctype.shopping_cart_settings.shopping_cart_settings import (
+	get_shopping_cart_settings,
+)
+from erpnext.utilities.product import get_qty_in_stock
 
 
 class WebsitePriceListMissingError(frappe.ValidationError):
diff --git a/erpnext/shopping_cart/doctype/shopping_cart_settings/shopping_cart_settings.py b/erpnext/shopping_cart/doctype/shopping_cart_settings/shopping_cart_settings.py
index efed196..8f4afda 100644
--- a/erpnext/shopping_cart/doctype/shopping_cart_settings/shopping_cart_settings.py
+++ b/erpnext/shopping_cart/doctype/shopping_cart_settings/shopping_cart_settings.py
@@ -4,11 +4,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe import _, msgprint
-from frappe.utils import flt
+from frappe import _
 from frappe.model.document import Document
-from frappe.utils import get_datetime, get_datetime_str, now_datetime
+from frappe.utils import flt
+
 
 class ShoppingCartSetupError(frappe.ValidationError): pass
 
diff --git a/erpnext/shopping_cart/doctype/shopping_cart_settings/test_shopping_cart_settings.py b/erpnext/shopping_cart/doctype/shopping_cart_settings/test_shopping_cart_settings.py
index 9965e1a..f8a22b0 100644
--- a/erpnext/shopping_cart/doctype/shopping_cart_settings/test_shopping_cart_settings.py
+++ b/erpnext/shopping_cart/doctype/shopping_cart_settings/test_shopping_cart_settings.py
@@ -4,9 +4,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import unittest
-from erpnext.shopping_cart.doctype.shopping_cart_settings.shopping_cart_settings import ShoppingCartSetupError
+
+import frappe
+
+from erpnext.shopping_cart.doctype.shopping_cart_settings.shopping_cart_settings import (
+	ShoppingCartSetupError,
+)
+
 
 class TestShoppingCartSettings(unittest.TestCase):
 	def setUp(self):
diff --git a/erpnext/shopping_cart/filters.py b/erpnext/shopping_cart/filters.py
index 7dfa09e..aaeff0f 100644
--- a/erpnext/shopping_cart/filters.py
+++ b/erpnext/shopping_cart/filters.py
@@ -2,9 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _dict
 
+
 class ProductFiltersBuilder:
 	def __init__(self, item_group=None):
 		if not item_group or item_group == "Products Settings":
diff --git a/erpnext/shopping_cart/product_info.py b/erpnext/shopping_cart/product_info.py
index 6c9e531..fa68636 100644
--- a/erpnext/shopping_cart/product_info.py
+++ b/erpnext/shopping_cart/product_info.py
@@ -4,10 +4,14 @@
 from __future__ import unicode_literals
 
 import frappe
+
 from erpnext.shopping_cart.cart import _get_cart_quotation, _set_price_list
-from erpnext.shopping_cart.doctype.shopping_cart_settings.shopping_cart_settings \
-	import get_shopping_cart_settings, show_quantity_in_website
-from erpnext.utilities.product import get_price, get_qty_in_stock, get_non_stock_item_status
+from erpnext.shopping_cart.doctype.shopping_cart_settings.shopping_cart_settings import (
+	get_shopping_cart_settings,
+	show_quantity_in_website,
+)
+from erpnext.utilities.product import get_non_stock_item_status, get_price, get_qty_in_stock
+
 
 @frappe.whitelist(allow_guest=True)
 def get_product_info_for_website(item_code, skip_quotation_creation=False):
diff --git a/erpnext/shopping_cart/product_query.py b/erpnext/shopping_cart/product_query.py
index 6c92d96..5cc0505 100644
--- a/erpnext/shopping_cart/product_query.py
+++ b/erpnext/shopping_cart/product_query.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 import frappe
+
 from erpnext.shopping_cart.product_info import get_product_info_for_website
 
+
 class ProductQuery:
 	"""Query engine for product listing
 
diff --git a/erpnext/shopping_cart/search.py b/erpnext/shopping_cart/search.py
index 9f674dc..5d2de78 100644
--- a/erpnext/shopping_cart/search.py
+++ b/erpnext/shopping_cart/search.py
@@ -1,9 +1,9 @@
 import frappe
 from frappe.search.full_text_search import FullTextSearch
-from whoosh.fields import TEXT, ID, KEYWORD, Schema
 from frappe.utils import strip_html_tags
-from whoosh.qparser import MultifieldParser, FieldsPlugin, WildcardPlugin
 from whoosh.analysis import StemmingAnalyzer
+from whoosh.fields import ID, KEYWORD, TEXT, Schema
+from whoosh.qparser import FieldsPlugin, MultifieldParser, WildcardPlugin
 from whoosh.query import Prefix
 
 INDEX_NAME = "products"
diff --git a/erpnext/shopping_cart/test_shopping_cart.py b/erpnext/shopping_cart/test_shopping_cart.py
index ac61aeb..d1284cd 100644
--- a/erpnext/shopping_cart/test_shopping_cart.py
+++ b/erpnext/shopping_cart/test_shopping_cart.py
@@ -2,12 +2,15 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import unittest
+
 import frappe
-from frappe.utils import nowdate, add_months
-from erpnext.shopping_cart.cart import _get_cart_quotation, update_cart, get_party
+from frappe.utils import add_months, nowdate
+
+from erpnext.accounts.doctype.tax_rule.tax_rule import ConflictingTaxRule
+from erpnext.shopping_cart.cart import _get_cart_quotation, get_party, update_cart
 from erpnext.tests.utils import create_test_contact_and_address
-from erpnext.accounts.doctype.tax_rule.tax_rule import  ConflictingTaxRule
 
 # test_dependencies = ['Payment Terms Template']
 
diff --git a/erpnext/shopping_cart/utils.py b/erpnext/shopping_cart/utils.py
index 0e1466f..f412e61 100644
--- a/erpnext/shopping_cart/utils.py
+++ b/erpnext/shopping_cart/utils.py
@@ -4,8 +4,11 @@
 from __future__ import unicode_literals
 
 import frappe
-import frappe.defaults
-from erpnext.shopping_cart.doctype.shopping_cart_settings.shopping_cart_settings import is_cart_enabled
+
+from erpnext.shopping_cart.doctype.shopping_cart_settings.shopping_cart_settings import (
+	is_cart_enabled,
+)
+
 
 def show_cart_count():
 	if (is_cart_enabled() and
diff --git a/erpnext/startup/__init__.py b/erpnext/startup/__init__.py
index deef4ba..3aa5297 100644
--- a/erpnext/startup/__init__.py
+++ b/erpnext/startup/__init__.py
@@ -19,7 +19,6 @@
 # default settings that can be made for a user.
 from __future__ import unicode_literals
 
-
 product_name = "ERPNext"
 user_defaults = {
 	"Company": "company",
diff --git a/erpnext/startup/boot.py b/erpnext/startup/boot.py
index 2b80fb8..bb76f5a 100644
--- a/erpnext/startup/boot.py
+++ b/erpnext/startup/boot.py
@@ -3,9 +3,11 @@
 
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.utils import cint
 
+
 def boot_session(bootinfo):
 	"""boot session - send website info if guest"""
 
diff --git a/erpnext/startup/filters.py b/erpnext/startup/filters.py
index 9821016..c0ccf54 100644
--- a/erpnext/startup/filters.py
+++ b/erpnext/startup/filters.py
@@ -1,5 +1,5 @@
 
-import frappe
+
 
 def get_filters_config():
 	filters_config = {
diff --git a/erpnext/startup/leaderboard.py b/erpnext/startup/leaderboard.py
index a89435d..60e67f8 100644
--- a/erpnext/startup/leaderboard.py
+++ b/erpnext/startup/leaderboard.py
@@ -1,8 +1,10 @@
 
-from __future__ import unicode_literals, print_function
+from __future__ import print_function, unicode_literals
+
 import frappe
 from frappe.utils import cint
 
+
 def get_leaderboards():
 	leaderboards = {
 		"Customer": {
diff --git a/erpnext/startup/notifications.py b/erpnext/startup/notifications.py
index 8e880dc..01bb344 100644
--- a/erpnext/startup/notifications.py
+++ b/erpnext/startup/notifications.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def get_notification_config():
 	notifications =  { "for_doctype":
 		{
diff --git a/erpnext/stock/__init__.py b/erpnext/stock/__init__.py
index 283f7d5..575aa0f 100644
--- a/erpnext/stock/__init__.py
+++ b/erpnext/stock/__init__.py
@@ -1,4 +1,5 @@
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
diff --git a/erpnext/stock/dashboard/item_dashboard.py b/erpnext/stock/dashboard/item_dashboard.py
index 45e6628..df6b632 100644
--- a/erpnext/stock/dashboard/item_dashboard.py
+++ b/erpnext/stock/dashboard/item_dashboard.py
@@ -2,7 +2,8 @@
 
 import frappe
 from frappe.model.db_query import DatabaseQuery
-from frappe.utils import flt, cint
+from frappe.utils import cint, flt
+
 
 @frappe.whitelist()
 def get_data(item_code=None, warehouse=None, item_group=None,
diff --git a/erpnext/stock/dashboard/warehouse_capacity_dashboard.py b/erpnext/stock/dashboard/warehouse_capacity_dashboard.py
index 70b030e..5d8b703 100644
--- a/erpnext/stock/dashboard/warehouse_capacity_dashboard.py
+++ b/erpnext/stock/dashboard/warehouse_capacity_dashboard.py
@@ -2,10 +2,11 @@
 
 import frappe
 from frappe.model.db_query import DatabaseQuery
-from frappe.utils import nowdate
-from frappe.utils import flt
+from frappe.utils import flt, nowdate
+
 from erpnext.stock.utils import get_stock_balance
 
+
 @frappe.whitelist()
 def get_data(item_code=None, warehouse=None, parent_warehouse=None,
 	company=None, start=0, sort_by="stock_capacity", sort_order="desc"):
diff --git a/erpnext/stock/dashboard_chart_source/warehouse_wise_stock_value/warehouse_wise_stock_value.py b/erpnext/stock/dashboard_chart_source/warehouse_wise_stock_value/warehouse_wise_stock_value.py
index 2258532..1753002 100644
--- a/erpnext/stock/dashboard_chart_source/warehouse_wise_stock_value/warehouse_wise_stock_value.py
+++ b/erpnext/stock/dashboard_chart_source/warehouse_wise_stock_value/warehouse_wise_stock_value.py
@@ -2,11 +2,14 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, json
+
+import frappe
 from frappe import _
 from frappe.utils.dashboard import cache_source
+
 from erpnext.stock.utils import get_stock_value_from_bin
 
+
 @frappe.whitelist()
 @cache_source
 def get(chart_name = None, chart = None, no_cache = None, filters = None, from_date = None,
diff --git a/erpnext/stock/doctype/batch/batch.py b/erpnext/stock/doctype/batch/batch.py
index b37ae3f..76db581 100644
--- a/erpnext/stock/doctype/batch/batch.py
+++ b/erpnext/stock/doctype/batch/batch.py
@@ -2,15 +2,16 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-from six import text_type
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
 from frappe.model.naming import make_autoname, revert_series_if_last
-from frappe.utils import flt, cint, get_link_to_form
-from frappe.utils.jinja import render_template
+from frappe.utils import cint, flt, get_link_to_form
 from frappe.utils.data import add_days
-from six import string_types
+from frappe.utils.jinja import render_template
+from six import text_type
+
 
 class UnableToSelectBatchError(frappe.ValidationError):
 	pass
diff --git a/erpnext/stock/doctype/batch/test_batch.py b/erpnext/stock/doctype/batch/test_batch.py
index a85a022..7998930 100644
--- a/erpnext/stock/doctype/batch/test_batch.py
+++ b/erpnext/stock/doctype/batch/test_batch.py
@@ -2,15 +2,17 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-import frappe
-from frappe.exceptions import ValidationError
 import unittest
 
-from erpnext.stock.doctype.batch.batch import get_batch_qty, UnableToSelectBatchError, get_batch_no
+import frappe
+from frappe.exceptions import ValidationError
 from frappe.utils import cint, flt
+
 from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import make_purchase_invoice
+from erpnext.stock.doctype.batch.batch import UnableToSelectBatchError, get_batch_no, get_batch_qty
 from erpnext.stock.get_item_details import get_item_details
 
+
 class TestBatch(unittest.TestCase):
 	def test_item_has_batch_enabled(self):
 		self.assertRaises(ValidationError, frappe.get_doc({
diff --git a/erpnext/stock/doctype/bin/bin.py b/erpnext/stock/doctype/bin/bin.py
index 4364201..5fbc2d8 100644
--- a/erpnext/stock/doctype/bin/bin.py
+++ b/erpnext/stock/doctype/bin/bin.py
@@ -2,10 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import flt, nowdate
-import frappe.defaults
 from frappe.model.document import Document
+from frappe.utils import flt, nowdate
+
 
 class Bin(Document):
 	def before_save(self):
diff --git a/erpnext/stock/doctype/bin/test_bin.py b/erpnext/stock/doctype/bin/test_bin.py
index fb32ce2..f0dbe8c 100644
--- a/erpnext/stock/doctype/bin/test_bin.py
+++ b/erpnext/stock/doctype/bin/test_bin.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Bin')
diff --git a/erpnext/stock/doctype/customs_tariff_number/customs_tariff_number.py b/erpnext/stock/doctype/customs_tariff_number/customs_tariff_number.py
index b0b3e6a..d484301 100644
--- a/erpnext/stock/doctype/customs_tariff_number/customs_tariff_number.py
+++ b/erpnext/stock/doctype/customs_tariff_number/customs_tariff_number.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class CustomsTariffNumber(Document):
 	pass
diff --git a/erpnext/stock/doctype/customs_tariff_number/test_customs_tariff_number.py b/erpnext/stock/doctype/customs_tariff_number/test_customs_tariff_number.py
index d7e0306..7c9807c 100644
--- a/erpnext/stock/doctype/customs_tariff_number/test_customs_tariff_number.py
+++ b/erpnext/stock/doctype/customs_tariff_number/test_customs_tariff_number.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestCustomsTariffNumber(unittest.TestCase):
 	pass
diff --git a/erpnext/stock/doctype/delivery_note/delivery_note.py b/erpnext/stock/doctype/delivery_note/delivery_note.py
index 9113b59..5542cd0 100644
--- a/erpnext/stock/doctype/delivery_note/delivery_note.py
+++ b/erpnext/stock/doctype/delivery_note/delivery_note.py
@@ -4,17 +4,17 @@
 from __future__ import unicode_literals
 
 import frappe
-import frappe.defaults
-from erpnext.controllers.selling_controller import SellingController
-from erpnext.stock.doctype.batch.batch import set_batch_nos
-from erpnext.stock.doctype.serial_no.serial_no import get_delivery_note_serial_no
 from frappe import _
 from frappe.contacts.doctype.address.address import get_company_address
 from frappe.desk.notifications import clear_doctype_notifications
 from frappe.model.mapper import get_mapped_doc
 from frappe.model.utils import get_fetch_values
 from frappe.utils import cint, flt
+
 from erpnext.controllers.accounts_controller import get_taxes_and_charges
+from erpnext.controllers.selling_controller import SellingController
+from erpnext.stock.doctype.batch.batch import set_batch_nos
+from erpnext.stock.doctype.serial_no.serial_no import get_delivery_note_serial_no
 
 form_grid_templates = {
 	"items": "templates/form_grid/item_grid.html"
@@ -668,8 +668,13 @@
 	return make_inter_company_transaction("Delivery Note", source_name, target_doc)
 
 def make_inter_company_transaction(doctype, source_name, target_doc=None):
-	from erpnext.accounts.doctype.sales_invoice.sales_invoice import (validate_inter_company_transaction,
-		get_inter_company_details, update_address, update_taxes, set_purchase_references)
+	from erpnext.accounts.doctype.sales_invoice.sales_invoice import (
+		get_inter_company_details,
+		set_purchase_references,
+		update_address,
+		update_taxes,
+		validate_inter_company_transaction,
+	)
 
 	if doctype == 'Delivery Note':
 		source_doc = frappe.get_doc(doctype, source_name)
diff --git a/erpnext/stock/doctype/delivery_note/delivery_note_dashboard.py b/erpnext/stock/doctype/delivery_note/delivery_note_dashboard.py
index 9db5db8..31fc708 100644
--- a/erpnext/stock/doctype/delivery_note/delivery_note_dashboard.py
+++ b/erpnext/stock/doctype/delivery_note/delivery_note_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'delivery_note',
diff --git a/erpnext/stock/doctype/delivery_note/test_delivery_note.py b/erpnext/stock/doctype/delivery_note/test_delivery_note.py
index b333a6b..7fda94b 100644
--- a/erpnext/stock/doctype/delivery_note/test_delivery_note.py
+++ b/erpnext/stock/doctype/delivery_note/test_delivery_note.py
@@ -3,26 +3,40 @@
 
 
 from __future__ import unicode_literals
-import unittest
-import frappe
+
 import json
-import frappe.defaults
-from frappe.utils import nowdate, nowtime, cstr, flt
-from erpnext.stock.stock_ledger import get_previous_sle
-from erpnext.accounts.utils import get_balance_on
-from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import get_gl_entries
-from erpnext.stock.doctype.delivery_note.delivery_note import make_sales_invoice, make_delivery_trip
-from erpnext.stock.doctype.stock_entry.test_stock_entry \
-	import make_stock_entry, make_serialized_item, get_qty_after_transaction
-from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos, SerialNoWarehouseError
-from erpnext.stock.doctype.stock_reconciliation.test_stock_reconciliation \
-	import create_stock_reconciliation, set_valuation_method
-from erpnext.selling.doctype.sales_order.test_sales_order \
-	import make_sales_order, create_dn_against_so, automatically_fetch_payment_terms, compare_payment_schedules
+import unittest
+
+import frappe
+from frappe.utils import cstr, flt, nowdate, nowtime
+
 from erpnext.accounts.doctype.account.test_account import get_inventory_account
-from erpnext.stock.doctype.warehouse.test_warehouse import get_warehouse
-from erpnext.stock.doctype.item.test_item import make_item
+from erpnext.accounts.utils import get_balance_on
 from erpnext.selling.doctype.product_bundle.test_product_bundle import make_product_bundle
+from erpnext.selling.doctype.sales_order.test_sales_order import (
+	automatically_fetch_payment_terms,
+	compare_payment_schedules,
+	create_dn_against_so,
+	make_sales_order,
+)
+from erpnext.stock.doctype.delivery_note.delivery_note import (
+	make_delivery_trip,
+	make_sales_invoice,
+)
+from erpnext.stock.doctype.item.test_item import make_item
+from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import get_gl_entries
+from erpnext.stock.doctype.serial_no.serial_no import SerialNoWarehouseError, get_serial_nos
+from erpnext.stock.doctype.stock_entry.test_stock_entry import (
+	get_qty_after_transaction,
+	make_serialized_item,
+	make_stock_entry,
+)
+from erpnext.stock.doctype.stock_reconciliation.test_stock_reconciliation import (
+	create_stock_reconciliation,
+	set_valuation_method,
+)
+from erpnext.stock.doctype.warehouse.test_warehouse import get_warehouse
+from erpnext.stock.stock_ledger import get_previous_sle
 
 
 class TestDeliveryNote(unittest.TestCase):
@@ -540,7 +554,10 @@
 
 	def test_dn_billing_status_case2(self):
 		# SO -> SI and SO -> DN1, DN2
-		from erpnext.selling.doctype.sales_order.sales_order import make_delivery_note, make_sales_invoice
+		from erpnext.selling.doctype.sales_order.sales_order import (
+			make_delivery_note,
+			make_sales_invoice,
+		)
 
 		so = make_sales_order()
 
@@ -579,8 +596,10 @@
 
 	def test_dn_billing_status_case3(self):
 		# SO -> DN1 -> SI and SO -> SI and SO -> DN2
-		from erpnext.selling.doctype.sales_order.sales_order \
-			import make_delivery_note, make_sales_invoice as make_sales_invoice_from_so
+		from erpnext.selling.doctype.sales_order.sales_order import make_delivery_note
+		from erpnext.selling.doctype.sales_order.sales_order import (
+			make_sales_invoice as make_sales_invoice_from_so,
+		)
 		frappe.db.set_value("Stock Settings", None, "allow_negative_stock", 1)
 
 		so = make_sales_order()
@@ -626,8 +645,8 @@
 
 	def test_dn_billing_status_case4(self):
 		# SO -> SI -> DN
-		from erpnext.selling.doctype.sales_order.sales_order import make_sales_invoice
 		from erpnext.accounts.doctype.sales_invoice.sales_invoice import make_delivery_note
+		from erpnext.selling.doctype.sales_order.sales_order import make_sales_invoice
 
 		so = make_sales_order()
 
@@ -777,7 +796,9 @@
 		self.assertTrue("TESTBATCH" in dn.packed_items[0].batch_no, "Batch number not added in packed item")
 
 	def test_payment_terms_are_fetched_when_creating_sales_invoice(self):
-		from erpnext.accounts.doctype.payment_entry.test_payment_entry import create_payment_terms_template
+		from erpnext.accounts.doctype.payment_entry.test_payment_entry import (
+			create_payment_terms_template,
+		)
 		from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
 
 		automatically_fetch_payment_terms()
diff --git a/erpnext/stock/doctype/delivery_note_item/delivery_note_item.py b/erpnext/stock/doctype/delivery_note_item/delivery_note_item.py
index 8bd381a..693caab 100644
--- a/erpnext/stock/doctype/delivery_note_item/delivery_note_item.py
+++ b/erpnext/stock/doctype/delivery_note_item/delivery_note_item.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class DeliveryNoteItem(Document):
 	pass
diff --git a/erpnext/stock/doctype/delivery_settings/delivery_settings.py b/erpnext/stock/doctype/delivery_settings/delivery_settings.py
index 909efda..c25907d 100644
--- a/erpnext/stock/doctype/delivery_settings/delivery_settings.py
+++ b/erpnext/stock/doctype/delivery_settings/delivery_settings.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class DeliverySettings(Document):
 	pass
diff --git a/erpnext/stock/doctype/delivery_settings/test_delivery_settings.py b/erpnext/stock/doctype/delivery_settings/test_delivery_settings.py
index 4395d26..25c9da1 100644
--- a/erpnext/stock/doctype/delivery_settings/test_delivery_settings.py
+++ b/erpnext/stock/doctype/delivery_settings/test_delivery_settings.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestDeliverySettings(unittest.TestCase):
 	pass
diff --git a/erpnext/stock/doctype/delivery_stop/delivery_stop.py b/erpnext/stock/doctype/delivery_stop/delivery_stop.py
index 768d161..f94ccb8 100644
--- a/erpnext/stock/doctype/delivery_stop/delivery_stop.py
+++ b/erpnext/stock/doctype/delivery_stop/delivery_stop.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class DeliveryStop(Document):
 	pass
diff --git a/erpnext/stock/doctype/delivery_trip/delivery_trip.py b/erpnext/stock/doctype/delivery_trip/delivery_trip.py
index f76bb87..fe98182 100644
--- a/erpnext/stock/doctype/delivery_trip/delivery_trip.py
+++ b/erpnext/stock/doctype/delivery_trip/delivery_trip.py
@@ -10,8 +10,8 @@
 from frappe import _
 from frappe.contacts.doctype.address.address import get_address_display
 from frappe.model.document import Document
-from frappe.utils import cint, get_datetime, get_link_to_form
 from frappe.model.mapper import get_mapped_doc
+from frappe.utils import cint, get_datetime, get_link_to_form
 
 
 class DeliveryTrip(Document):
diff --git a/erpnext/stock/doctype/delivery_trip/test_delivery_trip.py b/erpnext/stock/doctype/delivery_trip/test_delivery_trip.py
index 1e71603..c9081c9 100644
--- a/erpnext/stock/doctype/delivery_trip/test_delivery_trip.py
+++ b/erpnext/stock/doctype/delivery_trip/test_delivery_trip.py
@@ -5,12 +5,17 @@
 
 import unittest
 
-import erpnext
 import frappe
-from erpnext.stock.doctype.delivery_trip.delivery_trip import get_contact_and_address, notify_customers, make_expense_claim
-from erpnext.tests.utils import create_test_contact_and_address
 from frappe.utils import add_days, flt, now_datetime, nowdate
 
+import erpnext
+from erpnext.stock.doctype.delivery_trip.delivery_trip import (
+	get_contact_and_address,
+	make_expense_claim,
+	notify_customers,
+)
+from erpnext.tests.utils import create_test_contact_and_address
+
 
 class TestDeliveryTrip(unittest.TestCase):
 	def setUp(self):
diff --git a/erpnext/stock/doctype/item/item.py b/erpnext/stock/doctype/item/item.py
index 422fe3e..50fdd38 100644
--- a/erpnext/stock/doctype/item/item.py
+++ b/erpnext/stock/doctype/item/item.py
@@ -1,24 +1,42 @@
 # Copyright (c) 2021, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 
+import copy
 import itertools
 import json
-import erpnext
-import frappe
-import copy
-from erpnext.controllers.item_variant import (ItemVariantExistsError,
-		copy_attributes_to_variant, get_variant, make_variant_item_code, validate_item_variant_attributes)
-from erpnext.setup.doctype.item_group.item_group import (get_parent_item_groups, invalidate_cache_for)
-from frappe import _, msgprint
-from frappe.utils import (cint, cstr, flt, formatdate, getdate,
-		now_datetime, random_string, strip, get_link_to_form, nowtime)
-from frappe.utils.html_utils import clean_html
-from frappe.website.doctype.website_slideshow.website_slideshow import \
-	get_slideshow
 
+import frappe
+from frappe import _
+from frappe.utils import (
+	cint,
+	cstr,
+	flt,
+	formatdate,
+	get_link_to_form,
+	getdate,
+	now_datetime,
+	nowtime,
+	random_string,
+	strip,
+)
+from frappe.utils.html_utils import clean_html
+from frappe.website.doctype.website_slideshow.website_slideshow import get_slideshow
 from frappe.website.utils import clear_cache
 from frappe.website.website_generator import WebsiteGenerator
 
+import erpnext
+from erpnext.controllers.item_variant import (
+	ItemVariantExistsError,
+	copy_attributes_to_variant,
+	get_variant,
+	make_variant_item_code,
+	validate_item_variant_attributes,
+)
+from erpnext.setup.doctype.item_group.item_group import (
+	get_parent_item_groups,
+	invalidate_cache_for,
+)
+
 
 class DuplicateReorderRows(frappe.ValidationError):
 	pass
diff --git a/erpnext/stock/doctype/item/item_dashboard.py b/erpnext/stock/doctype/item/item_dashboard.py
index b3e4796..e80ed6f 100644
--- a/erpnext/stock/doctype/item/item_dashboard.py
+++ b/erpnext/stock/doctype/item/item_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'heatmap': True,
diff --git a/erpnext/stock/doctype/item/test_item.py b/erpnext/stock/doctype/item/test_item.py
index 7a9985d..0ed2761 100644
--- a/erpnext/stock/doctype/item/test_item.py
+++ b/erpnext/stock/doctype/item/test_item.py
@@ -2,21 +2,31 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import unittest
-import frappe
-import json
 
+import json
+import unittest
+
+import frappe
 from frappe.test_runner import make_test_objects
-from erpnext.controllers.item_variant import (create_variant, ItemVariantExistsError,
-	InvalidItemAttributeValueError, get_variant)
-from erpnext.stock.doctype.item.item import StockExistsForTemplate, InvalidBarcode
-from erpnext.stock.doctype.item.item import (get_uom_conv_factor, get_item_attribute,
-	validate_is_stock_item, get_timeline_data)
+
+from erpnext.controllers.item_variant import (
+	InvalidItemAttributeValueError,
+	ItemVariantExistsError,
+	create_variant,
+	get_variant,
+)
+from erpnext.stock.doctype.item.item import (
+	InvalidBarcode,
+	StockExistsForTemplate,
+	get_item_attribute,
+	get_timeline_data,
+	get_uom_conv_factor,
+	validate_is_stock_item,
+)
 from erpnext.stock.doctype.stock_entry.stock_entry_utils import make_stock_entry
 from erpnext.stock.get_item_details import get_item_details
 from erpnext.tests.utils import change_settings
 
-
 test_ignore = ["BOM"]
 test_dependencies = ["Warehouse", "Item Group", "Item Tax Template", "Brand", "Item Attribute"]
 
diff --git a/erpnext/stock/doctype/item_alternative/item_alternative.py b/erpnext/stock/doctype/item_alternative/item_alternative.py
index 190cb62..6080fb4 100644
--- a/erpnext/stock/doctype/item_alternative/item_alternative.py
+++ b/erpnext/stock/doctype/item_alternative/item_alternative.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
 
+
 class ItemAlternative(Document):
 	def validate(self):
 		self.has_alternative_item()
diff --git a/erpnext/stock/doctype/item_alternative/test_item_alternative.py b/erpnext/stock/doctype/item_alternative/test_item_alternative.py
index 8f76844..2be8ef7 100644
--- a/erpnext/stock/doctype/item_alternative/test_item_alternative.py
+++ b/erpnext/stock/doctype/item_alternative/test_item_alternative.py
@@ -2,17 +2,27 @@
 # Copyright (c) 2018, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
-import frappe, json
-from frappe.utils import flt
-from erpnext.stock.doctype.item.test_item import create_item
-from erpnext.manufacturing.doctype.production_plan.test_production_plan import make_bom
-from erpnext.buying.doctype.purchase_order.test_purchase_order import create_purchase_order
-from erpnext.manufacturing.doctype.work_order.work_order import make_stock_entry
-from erpnext.stock.doctype.stock_reconciliation.test_stock_reconciliation import create_stock_reconciliation
-from erpnext.manufacturing.doctype.work_order.test_work_order import make_wo_order_test_record
-from erpnext.buying.doctype.purchase_order.purchase_order import make_purchase_receipt, make_rm_stock_entry
+
+import json
 import unittest
 
+import frappe
+from frappe.utils import flt
+
+from erpnext.buying.doctype.purchase_order.purchase_order import (
+	make_purchase_receipt,
+	make_rm_stock_entry,
+)
+from erpnext.buying.doctype.purchase_order.test_purchase_order import create_purchase_order
+from erpnext.manufacturing.doctype.production_plan.test_production_plan import make_bom
+from erpnext.manufacturing.doctype.work_order.test_work_order import make_wo_order_test_record
+from erpnext.manufacturing.doctype.work_order.work_order import make_stock_entry
+from erpnext.stock.doctype.item.test_item import create_item
+from erpnext.stock.doctype.stock_reconciliation.test_stock_reconciliation import (
+	create_stock_reconciliation,
+)
+
+
 class TestItemAlternative(unittest.TestCase):
 	def setUp(self):
 		make_items()
diff --git a/erpnext/stock/doctype/item_attribute/item_attribute.py b/erpnext/stock/doctype/item_attribute/item_attribute.py
index 3764738..9894788 100644
--- a/erpnext/stock/doctype/item_attribute/item_attribute.py
+++ b/erpnext/stock/doctype/item_attribute/item_attribute.py
@@ -2,13 +2,17 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.document import Document
 from frappe import _
+from frappe.model.document import Document
 from frappe.utils import flt
 
-from erpnext.controllers.item_variant import (validate_is_incremental,
-	validate_item_attribute_value, InvalidItemAttributeValueError)
+from erpnext.controllers.item_variant import (
+	InvalidItemAttributeValueError,
+	validate_is_incremental,
+	validate_item_attribute_value,
+)
 
 
 class ItemAttributeIncrementError(frappe.ValidationError): pass
diff --git a/erpnext/stock/doctype/item_attribute/test_item_attribute.py b/erpnext/stock/doctype/item_attribute/test_item_attribute.py
index 07af176..fc809f4 100644
--- a/erpnext/stock/doctype/item_attribute/test_item_attribute.py
+++ b/erpnext/stock/doctype/item_attribute/test_item_attribute.py
@@ -2,13 +2,16 @@
 # See license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import unittest
 
+import frappe
+
 test_records = frappe.get_test_records('Item Attribute')
 
 from erpnext.stock.doctype.item_attribute.item_attribute import ItemAttributeIncrementError
 
+
 class TestItemAttribute(unittest.TestCase):
 	def setUp(self):
 		if frappe.db.exists("Item Attribute", "_Test_Length"):
diff --git a/erpnext/stock/doctype/item_attribute_value/item_attribute_value.py b/erpnext/stock/doctype/item_attribute_value/item_attribute_value.py
index edbab00..ceffb49 100644
--- a/erpnext/stock/doctype/item_attribute_value/item_attribute_value.py
+++ b/erpnext/stock/doctype/item_attribute_value/item_attribute_value.py
@@ -2,8 +2,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ItemAttributeValue(Document):
 	pass
diff --git a/erpnext/stock/doctype/item_customer_detail/item_customer_detail.py b/erpnext/stock/doctype/item_customer_detail/item_customer_detail.py
index 3e4e850..55fd0ec 100644
--- a/erpnext/stock/doctype/item_customer_detail/item_customer_detail.py
+++ b/erpnext/stock/doctype/item_customer_detail/item_customer_detail.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class ItemCustomerDetail(Document):
 	pass
diff --git a/erpnext/stock/doctype/item_default/item_default.py b/erpnext/stock/doctype/item_default/item_default.py
index 935f0ff..6239c54 100644
--- a/erpnext/stock/doctype/item_default/item_default.py
+++ b/erpnext/stock/doctype/item_default/item_default.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class ItemDefault(Document):
 	pass
diff --git a/erpnext/stock/doctype/item_manufacturer/item_manufacturer.py b/erpnext/stock/doctype/item_manufacturer/item_manufacturer.py
index 939abf8..044ac7c 100644
--- a/erpnext/stock/doctype/item_manufacturer/item_manufacturer.py
+++ b/erpnext/stock/doctype/item_manufacturer/item_manufacturer.py
@@ -8,6 +8,7 @@
 from frappe import _
 from frappe.model.document import Document
 
+
 class ItemManufacturer(Document):
 	def validate(self):
 		self.validate_duplicate_entry()
diff --git a/erpnext/stock/doctype/item_manufacturer/test_item_manufacturer.py b/erpnext/stock/doctype/item_manufacturer/test_item_manufacturer.py
index 1cef20c..5a4ca6a 100644
--- a/erpnext/stock/doctype/item_manufacturer/test_item_manufacturer.py
+++ b/erpnext/stock/doctype/item_manufacturer/test_item_manufacturer.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestItemManufacturer(unittest.TestCase):
 	pass
diff --git a/erpnext/stock/doctype/item_price/item_price.py b/erpnext/stock/doctype/item_price/item_price.py
index e82a19b..3f0fc41 100644
--- a/erpnext/stock/doctype/item_price/item_price.py
+++ b/erpnext/stock/doctype/item_price/item_price.py
@@ -2,6 +2,7 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
diff --git a/erpnext/stock/doctype/item_price/test_item_price.py b/erpnext/stock/doctype/item_price/test_item_price.py
index f3d406e..5ed8092 100644
--- a/erpnext/stock/doctype/item_price/test_item_price.py
+++ b/erpnext/stock/doctype/item_price/test_item_price.py
@@ -2,11 +2,14 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import unittest
+
 import frappe
 from frappe.test_runner import make_test_records_for_doctype
-from erpnext.stock.get_item_details import get_price_list_rate_for, process_args
+
 from erpnext.stock.doctype.item_price.item_price import ItemPriceDuplicateItem
+from erpnext.stock.get_item_details import get_price_list_rate_for, process_args
 
 
 class TestItemPrice(unittest.TestCase):
diff --git a/erpnext/stock/doctype/item_quality_inspection_parameter/item_quality_inspection_parameter.py b/erpnext/stock/doctype/item_quality_inspection_parameter/item_quality_inspection_parameter.py
index 785737b..0dd7e43 100644
--- a/erpnext/stock/doctype/item_quality_inspection_parameter/item_quality_inspection_parameter.py
+++ b/erpnext/stock/doctype/item_quality_inspection_parameter/item_quality_inspection_parameter.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class ItemQualityInspectionParameter(Document):
 	pass
diff --git a/erpnext/stock/doctype/item_reorder/item_reorder.py b/erpnext/stock/doctype/item_reorder/item_reorder.py
index 5cdaa22..598339d 100644
--- a/erpnext/stock/doctype/item_reorder/item_reorder.py
+++ b/erpnext/stock/doctype/item_reorder/item_reorder.py
@@ -4,9 +4,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class ItemReorder(Document):
 	pass
diff --git a/erpnext/stock/doctype/item_supplier/item_supplier.py b/erpnext/stock/doctype/item_supplier/item_supplier.py
index 5dda535..9b5da55 100644
--- a/erpnext/stock/doctype/item_supplier/item_supplier.py
+++ b/erpnext/stock/doctype/item_supplier/item_supplier.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class ItemSupplier(Document):
 	pass
diff --git a/erpnext/stock/doctype/item_tax/item_tax.py b/erpnext/stock/doctype/item_tax/item_tax.py
index 7c9e811..33c1e49 100644
--- a/erpnext/stock/doctype/item_tax/item_tax.py
+++ b/erpnext/stock/doctype/item_tax/item_tax.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class ItemTax(Document):
 	pass
diff --git a/erpnext/stock/doctype/item_variant/item_variant.py b/erpnext/stock/doctype/item_variant/item_variant.py
index 5d5a022..47ab07f 100644
--- a/erpnext/stock/doctype/item_variant/item_variant.py
+++ b/erpnext/stock/doctype/item_variant/item_variant.py
@@ -2,8 +2,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ItemVariant(Document):
 	pass
diff --git a/erpnext/stock/doctype/item_variant_attribute/item_variant_attribute.py b/erpnext/stock/doctype/item_variant_attribute/item_variant_attribute.py
index d1a1eb5..78dda65 100644
--- a/erpnext/stock/doctype/item_variant_attribute/item_variant_attribute.py
+++ b/erpnext/stock/doctype/item_variant_attribute/item_variant_attribute.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class ItemVariantAttribute(Document):
 	pass
diff --git a/erpnext/stock/doctype/item_variant_settings/item_variant_settings.py b/erpnext/stock/doctype/item_variant_settings/item_variant_settings.py
index 78f1131..cb6626f 100644
--- a/erpnext/stock/doctype/item_variant_settings/item_variant_settings.py
+++ b/erpnext/stock/doctype/item_variant_settings/item_variant_settings.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.model.document import Document
 from frappe import _
+from frappe.model.document import Document
+
 
 class ItemVariantSettings(Document):
 	invalid_fields_for_copy_fields_in_variants = ['barcodes']
diff --git a/erpnext/stock/doctype/item_variant_settings/test_item_variant_settings.py b/erpnext/stock/doctype/item_variant_settings/test_item_variant_settings.py
index 9a800c0..040382a 100644
--- a/erpnext/stock/doctype/item_variant_settings/test_item_variant_settings.py
+++ b/erpnext/stock/doctype/item_variant_settings/test_item_variant_settings.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestItemVariantSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/stock/doctype/item_website_specification/item_website_specification.py b/erpnext/stock/doctype/item_website_specification/item_website_specification.py
index e3041cf..85491b7 100644
--- a/erpnext/stock/doctype/item_website_specification/item_website_specification.py
+++ b/erpnext/stock/doctype/item_website_specification/item_website_specification.py
@@ -4,9 +4,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class ItemWebsiteSpecification(Document):
 	pass
diff --git a/erpnext/stock/doctype/landed_cost_item/landed_cost_item.py b/erpnext/stock/doctype/landed_cost_item/landed_cost_item.py
index 493e8b2..7dd3aa5 100644
--- a/erpnext/stock/doctype/landed_cost_item/landed_cost_item.py
+++ b/erpnext/stock/doctype/landed_cost_item/landed_cost_item.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class LandedCostItem(Document):
 	pass
diff --git a/erpnext/stock/doctype/landed_cost_purchase_receipt/landed_cost_purchase_receipt.py b/erpnext/stock/doctype/landed_cost_purchase_receipt/landed_cost_purchase_receipt.py
index 38f4eaf..3d81d96 100644
--- a/erpnext/stock/doctype/landed_cost_purchase_receipt/landed_cost_purchase_receipt.py
+++ b/erpnext/stock/doctype/landed_cost_purchase_receipt/landed_cost_purchase_receipt.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class LandedCostPurchaseReceipt(Document):
 	pass
diff --git a/erpnext/stock/doctype/landed_cost_taxes_and_charges/landed_cost_taxes_and_charges.py b/erpnext/stock/doctype/landed_cost_taxes_and_charges/landed_cost_taxes_and_charges.py
index 0dc396a..e649e4d 100644
--- a/erpnext/stock/doctype/landed_cost_taxes_and_charges/landed_cost_taxes_and_charges.py
+++ b/erpnext/stock/doctype/landed_cost_taxes_and_charges/landed_cost_taxes_and_charges.py
@@ -2,8 +2,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class LandedCostTaxesandCharges(Document):
 	pass
diff --git a/erpnext/stock/doctype/landed_cost_voucher/landed_cost_voucher.py b/erpnext/stock/doctype/landed_cost_voucher/landed_cost_voucher.py
index bf969f9..51ccea9 100644
--- a/erpnext/stock/doctype/landed_cost_voucher/landed_cost_voucher.py
+++ b/erpnext/stock/doctype/landed_cost_voucher/landed_cost_voucher.py
@@ -2,14 +2,17 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
+
+import frappe
 from frappe import _
-from frappe.utils import flt
-from frappe.model.meta import get_field_precision
 from frappe.model.document import Document
-from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
-from erpnext.accounts.doctype.account.account import get_account_currency
+from frappe.model.meta import get_field_precision
+from frappe.utils import flt
+
+import erpnext
 from erpnext.controllers.taxes_and_totals import init_landed_taxes_and_totals
+from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
+
 
 class LandedCostVoucher(Document):
 	@frappe.whitelist()
diff --git a/erpnext/stock/doctype/landed_cost_voucher/test_landed_cost_voucher.py b/erpnext/stock/doctype/landed_cost_voucher/test_landed_cost_voucher.py
index cb09d93..58a72f7 100644
--- a/erpnext/stock/doctype/landed_cost_voucher/test_landed_cost_voucher.py
+++ b/erpnext/stock/doctype/landed_cost_voucher/test_landed_cost_voucher.py
@@ -3,15 +3,20 @@
 
 
 from __future__ import unicode_literals
+
 import unittest
+
 import frappe
 from frappe.utils import flt
-from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt \
-	import get_gl_entries, test_records as pr_test_records, make_purchase_receipt
+
+from erpnext.accounts.doctype.account.test_account import create_account, get_inventory_account
 from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import make_purchase_invoice
-from erpnext.accounts.doctype.account.test_account import get_inventory_account
-from erpnext.accounts.doctype.account.test_account import create_account
 from erpnext.assets.doctype.asset.test_asset import create_asset_category, create_fixed_asset_item
+from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import (
+	get_gl_entries,
+	make_purchase_receipt,
+)
+
 
 class TestLandedCostVoucher(unittest.TestCase):
 	def test_landed_cost_voucher(self):
@@ -208,7 +213,10 @@
 		self.assertEqual(pr.items[1].landed_cost_voucher_amount, 100)
 
 	def test_multi_currency_lcv(self):
-		from erpnext.setup.doctype.currency_exchange.test_currency_exchange import test_records, save_new_records
+		from erpnext.setup.doctype.currency_exchange.test_currency_exchange import (
+			save_new_records,
+			test_records,
+		)
 
 		save_new_records(test_records)
 
diff --git a/erpnext/stock/doctype/manufacturer/manufacturer.py b/erpnext/stock/doctype/manufacturer/manufacturer.py
index b624f73..314a280 100644
--- a/erpnext/stock/doctype/manufacturer/manufacturer.py
+++ b/erpnext/stock/doctype/manufacturer/manufacturer.py
@@ -3,10 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe.contacts.address_and_contact import load_address_and_contact, delete_contact_and_address
+
+from frappe.contacts.address_and_contact import load_address_and_contact
 from frappe.model.document import Document
 
+
 class Manufacturer(Document):
 	def onload(self):
 		"""Load address and contacts in `__onload`"""
diff --git a/erpnext/stock/doctype/manufacturer/test_manufacturer.py b/erpnext/stock/doctype/manufacturer/test_manufacturer.py
index 996f6b2..c0c61b0 100644
--- a/erpnext/stock/doctype/manufacturer/test_manufacturer.py
+++ b/erpnext/stock/doctype/manufacturer/test_manufacturer.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Manufacturer')
diff --git a/erpnext/stock/doctype/material_request/material_request.py b/erpnext/stock/doctype/material_request/material_request.py
index 026b85e..9eb4721 100644
--- a/erpnext/stock/doctype/material_request/material_request.py
+++ b/erpnext/stock/doctype/material_request/material_request.py
@@ -5,19 +5,17 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
-import json
 
-from frappe.utils import cstr, flt, getdate, new_line_sep, nowdate, add_days, get_link_to_form
-from frappe import msgprint, _
+import frappe
+from frappe import _, msgprint
 from frappe.model.mapper import get_mapped_doc
-from erpnext.stock.stock_balance import update_bin_qty, get_indented_qty
+from frappe.utils import cstr, flt, get_link_to_form, getdate, new_line_sep, nowdate
+
+from erpnext.buying.utils import check_on_hold_or_closed_status, validate_for_items
 from erpnext.controllers.buying_controller import BuyingController
 from erpnext.manufacturing.doctype.work_order.work_order import get_item_details
-from erpnext.buying.utils import check_on_hold_or_closed_status, validate_for_items
 from erpnext.stock.doctype.item.item import get_item_defaults
-
-from six import string_types
+from erpnext.stock.stock_balance import get_indented_qty, update_bin_qty
 
 form_grid_templates = {
 	"items": "templates/form_grid/material_request_grid.html"
diff --git a/erpnext/stock/doctype/material_request/material_request_dashboard.py b/erpnext/stock/doctype/material_request/material_request_dashboard.py
index e1e4faf..291cfb5 100644
--- a/erpnext/stock/doctype/material_request/material_request_dashboard.py
+++ b/erpnext/stock/doctype/material_request/material_request_dashboard.py
@@ -1,4 +1,5 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
 
diff --git a/erpnext/stock/doctype/material_request/test_material_request.py b/erpnext/stock/doctype/material_request/test_material_request.py
index b4776ba..5c2ac25 100644
--- a/erpnext/stock/doctype/material_request/test_material_request.py
+++ b/erpnext/stock/doctype/material_request/test_material_request.py
@@ -5,11 +5,20 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, unittest, erpnext
+
+import unittest
+
+import frappe
 from frappe.utils import flt, today
-from erpnext.stock.doctype.material_request.material_request \
-	import raise_work_orders, make_stock_entry, make_purchase_order, make_supplier_quotation
+
 from erpnext.stock.doctype.item.test_item import create_item
+from erpnext.stock.doctype.material_request.material_request import (
+	make_purchase_order,
+	make_stock_entry,
+	make_supplier_quotation,
+	raise_work_orders,
+)
+
 
 class TestMaterialRequest(unittest.TestCase):
 	def test_make_purchase_order(self):
diff --git a/erpnext/stock/doctype/material_request_item/material_request_item.py b/erpnext/stock/doctype/material_request_item/material_request_item.py
index e0066e6..0c98b97 100644
--- a/erpnext/stock/doctype/material_request_item/material_request_item.py
+++ b/erpnext/stock/doctype/material_request_item/material_request_item.py
@@ -4,10 +4,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
 
+import frappe
 from frappe.model.document import Document
 
+
 class MaterialRequestItem(Document):
 	pass
 
diff --git a/erpnext/stock/doctype/packed_item/packed_item.py b/erpnext/stock/doctype/packed_item/packed_item.py
index eea00ec..08a2447 100644
--- a/erpnext/stock/doctype/packed_item/packed_item.py
+++ b/erpnext/stock/doctype/packed_item/packed_item.py
@@ -4,10 +4,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, json
-from frappe.utils import cstr, flt
-from erpnext.stock.get_item_details import get_item_details
+
+import json
+
+import frappe
 from frappe.model.document import Document
+from frappe.utils import cstr, flt
+
+from erpnext.stock.get_item_details import get_item_details
+
 
 class PackedItem(Document):
 	pass
@@ -130,7 +135,7 @@
 	# for the last product bundle
 	if doc.get("packed_items"):
 		update_parent_item_price(doc, parent_items[parent_items_index][0], bundle_price)
-		
+
 def update_parent_item_price(doc, parent_item_code, bundle_price):
 	parent_item_doc = doc.get('items', {'item_code': parent_item_code})[0]
 
diff --git a/erpnext/stock/doctype/packing_slip/test_packing_slip.py b/erpnext/stock/doctype/packing_slip/test_packing_slip.py
index 1f2af02..193adfc 100644
--- a/erpnext/stock/doctype/packing_slip/test_packing_slip.py
+++ b/erpnext/stock/doctype/packing_slip/test_packing_slip.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('Packing Slip')
diff --git a/erpnext/stock/doctype/packing_slip_item/packing_slip_item.py b/erpnext/stock/doctype/packing_slip_item/packing_slip_item.py
index b0a8559..8363968 100644
--- a/erpnext/stock/doctype/packing_slip_item/packing_slip_item.py
+++ b/erpnext/stock/doctype/packing_slip_item/packing_slip_item.py
@@ -4,9 +4,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class PackingSlipItem(Document):
 	pass
diff --git a/erpnext/stock/doctype/pick_list/pick_list.py b/erpnext/stock/doctype/pick_list/pick_list.py
index 516ae43..dffbe80 100644
--- a/erpnext/stock/doctype/pick_list/pick_list.py
+++ b/erpnext/stock/doctype/pick_list/pick_list.py
@@ -3,16 +3,21 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import json
-from six import iteritems
-from frappe.model.document import Document
-from frappe import _
 from collections import OrderedDict
-from frappe.utils import floor, flt, today, cint
-from frappe.model.mapper import get_mapped_doc, map_child_doc
+
+import frappe
+from frappe import _
+from frappe.model.document import Document
+from frappe.model.mapper import map_child_doc
+from frappe.utils import cint, floor, flt, today
+from six import iteritems
+
+from erpnext.selling.doctype.sales_order.sales_order import (
+	make_delivery_note as create_delivery_note_from_sales_order,
+)
 from erpnext.stock.get_item_details import get_conversion_factor
-from erpnext.selling.doctype.sales_order.sales_order import make_delivery_note as create_delivery_note_from_sales_order
 
 # TODO: Prioritize SO or WO group warehouse
 
diff --git a/erpnext/stock/doctype/pick_list/pick_list_dashboard.py b/erpnext/stock/doctype/pick_list/pick_list_dashboard.py
index 7c321c4..50a767b 100644
--- a/erpnext/stock/doctype/pick_list/pick_list_dashboard.py
+++ b/erpnext/stock/doctype/pick_list/pick_list_dashboard.py
@@ -1,5 +1,5 @@
 from __future__ import unicode_literals
-from frappe import _
+
 
 def get_data():
 	return {
diff --git a/erpnext/stock/doctype/pick_list/test_pick_list.py b/erpnext/stock/doctype/pick_list/test_pick_list.py
index 84566b8..aa710ad 100644
--- a/erpnext/stock/doctype/pick_list/test_pick_list.py
+++ b/erpnext/stock/doctype/pick_list/test_pick_list.py
@@ -3,15 +3,19 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
+
+import frappe
+
 test_dependencies = ['Item', 'Sales Invoice', 'Stock Entry', 'Batch']
 
-from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import make_purchase_receipt
 from erpnext.stock.doctype.item.test_item import create_item
 from erpnext.stock.doctype.pick_list.pick_list import create_delivery_note
-from erpnext.stock.doctype.stock_reconciliation.stock_reconciliation \
-		import EmptyStockReconciliationItemsError
+from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import make_purchase_receipt
+from erpnext.stock.doctype.stock_reconciliation.stock_reconciliation import (
+	EmptyStockReconciliationItemsError,
+)
+
 
 class TestPickList(unittest.TestCase):
 
diff --git a/erpnext/stock/doctype/pick_list_item/pick_list_item.py b/erpnext/stock/doctype/pick_list_item/pick_list_item.py
index 8797b8d..4cd81f7 100644
--- a/erpnext/stock/doctype/pick_list_item/pick_list_item.py
+++ b/erpnext/stock/doctype/pick_list_item/pick_list_item.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class PickListItem(Document):
 	pass
diff --git a/erpnext/stock/doctype/price_list/price_list.py b/erpnext/stock/doctype/price_list/price_list.py
index 002d3d8..01040c6 100644
--- a/erpnext/stock/doctype/price_list/price_list.py
+++ b/erpnext/stock/doctype/price_list/price_list.py
@@ -2,11 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _, throw
-from frappe.utils import cint
 from frappe.model.document import Document
-import frappe.defaults
+from frappe.utils import cint
+
 
 class PriceList(Document):
 	def validate(self):
@@ -37,7 +38,9 @@
 
 	def check_impact_on_shopping_cart(self):
 		"Check if Price List currency change impacts Shopping Cart."
-		from erpnext.shopping_cart.doctype.shopping_cart_settings.shopping_cart_settings import validate_cart_settings
+		from erpnext.shopping_cart.doctype.shopping_cart_settings.shopping_cart_settings import (
+			validate_cart_settings,
+		)
 
 		doc_before_save = self.get_doc_before_save()
 		currency_changed = self.currency != doc_before_save.currency
diff --git a/erpnext/stock/doctype/price_list/test_price_list.py b/erpnext/stock/doctype/price_list/test_price_list.py
index 2c287c9..baf6170 100644
--- a/erpnext/stock/doctype/price_list/test_price_list.py
+++ b/erpnext/stock/doctype/price_list/test_price_list.py
@@ -2,6 +2,7 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
 # test_ignore = ["Item"]
diff --git a/erpnext/stock/doctype/price_list_country/price_list_country.py b/erpnext/stock/doctype/price_list_country/price_list_country.py
index db1a060..a57729f 100644
--- a/erpnext/stock/doctype/price_list_country/price_list_country.py
+++ b/erpnext/stock/doctype/price_list_country/price_list_country.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class PriceListCountry(Document):
 	pass
diff --git a/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py b/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
index ece6d6f..07a568d 100644
--- a/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
+++ b/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
@@ -2,21 +2,19 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-
-from frappe.utils import flt, cint, nowdate
-
-from frappe import throw, _
-import frappe.defaults
-from frappe.utils import getdate
-from erpnext.controllers.buying_controller import BuyingController
-from erpnext.accounts.utils import get_account_currency
+from frappe import _, throw
 from frappe.desk.notifications import clear_doctype_notifications
 from frappe.model.mapper import get_mapped_doc
-from erpnext.buying.utils import check_on_hold_or_closed_status
+from frappe.utils import cint, flt, getdate, nowdate
+from six import iteritems
+
+from erpnext.accounts.utils import get_account_currency
 from erpnext.assets.doctype.asset.asset import get_asset_account, is_cwip_accounting_enabled
 from erpnext.assets.doctype.asset_category.asset_category import get_asset_category_account
-from six import iteritems
+from erpnext.buying.utils import check_on_hold_or_closed_status
+from erpnext.controllers.buying_controller import BuyingController
 from erpnext.stock.doctype.delivery_note.delivery_note import make_inter_company_transaction
 
 form_grid_templates = {
@@ -254,7 +252,9 @@
 		return process_gl_map(gl_entries)
 
 	def make_item_gl_entries(self, gl_entries, warehouse_account=None):
-		from erpnext.accounts.doctype.purchase_invoice.purchase_invoice import get_purchase_document_details
+		from erpnext.accounts.doctype.purchase_invoice.purchase_invoice import (
+			get_purchase_document_details,
+		)
 
 		stock_rbnb = self.get_company_default("stock_received_but_not_billed")
 		landed_cost_entries = get_item_account_wise_additional_cost(self.name)
diff --git a/erpnext/stock/doctype/purchase_receipt/purchase_receipt_dashboard.py b/erpnext/stock/doctype/purchase_receipt/purchase_receipt_dashboard.py
index 3832c82..b60850f 100644
--- a/erpnext/stock/doctype/purchase_receipt/purchase_receipt_dashboard.py
+++ b/erpnext/stock/doctype/purchase_receipt/purchase_receipt_dashboard.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'purchase_receipt_no',
diff --git a/erpnext/stock/doctype/purchase_receipt/test_purchase_receipt.py b/erpnext/stock/doctype/purchase_receipt/test_purchase_receipt.py
index 2314508..044856c 100644
--- a/erpnext/stock/doctype/purchase_receipt/test_purchase_receipt.py
+++ b/erpnext/stock/doctype/purchase_receipt/test_purchase_receipt.py
@@ -2,20 +2,22 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import unittest
+
 import json
-import frappe, erpnext
-import frappe.defaults
-from frappe.utils import cint, flt, cstr, today, random_string, add_days
-from erpnext.stock.doctype.purchase_receipt.purchase_receipt import make_purchase_invoice
-from erpnext.stock.doctype.item.test_item import create_item
-from erpnext.stock.doctype.serial_no.serial_no import SerialNoDuplicateError
-from erpnext.accounts.doctype.account.test_account import get_inventory_account
-from erpnext.stock.doctype.item.test_item import make_item
+import unittest
+
+import frappe
+from frappe.utils import add_days, cint, cstr, flt, today
 from six import iteritems
-from erpnext.stock.stock_ledger import SerialNoExistsInFutureTransaction
+
+import erpnext
+from erpnext.accounts.doctype.account.test_account import get_inventory_account
+from erpnext.stock.doctype.item.test_item import create_item, make_item
+from erpnext.stock.doctype.purchase_receipt.purchase_receipt import make_purchase_invoice
+from erpnext.stock.doctype.serial_no.serial_no import SerialNoDuplicateError, get_serial_nos
 from erpnext.stock.doctype.warehouse.test_warehouse import create_warehouse
-from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
+from erpnext.stock.stock_ledger import SerialNoExistsInFutureTransaction
+
 
 class TestPurchaseReceipt(unittest.TestCase):
 	def setUp(self):
@@ -275,11 +277,16 @@
 				receive more than the required qty in the PO.
 			Expected Result: Error Raised for Over Receipt against PO.
 		"""
+		from erpnext.buying.doctype.purchase_order.purchase_order import make_purchase_receipt
+		from erpnext.buying.doctype.purchase_order.purchase_order import (
+			make_rm_stock_entry as make_subcontract_transfer_entry,
+		)
+		from erpnext.buying.doctype.purchase_order.test_purchase_order import (
+			create_purchase_order,
+			make_subcontracted_item,
+			update_backflush_based_on,
+		)
 		from erpnext.stock.doctype.stock_entry.test_stock_entry import make_stock_entry
-		from erpnext.buying.doctype.purchase_order.test_purchase_order import (update_backflush_based_on,
-			make_subcontracted_item, create_purchase_order)
-		from erpnext.buying.doctype.purchase_order.purchase_order import (make_purchase_receipt,
-			make_rm_stock_entry as make_subcontract_transfer_entry)
 
 		update_backflush_based_on("Material Transferred for Subcontract")
 		item_code = "_Test Subcontracted FG Item 1"
@@ -526,7 +533,9 @@
 		pr.cancel()
 
 	def test_closed_purchase_receipt(self):
-		from erpnext.stock.doctype.purchase_receipt.purchase_receipt import update_purchase_receipt_status
+		from erpnext.stock.doctype.purchase_receipt.purchase_receipt import (
+			update_purchase_receipt_status,
+		)
 
 		pr = make_purchase_receipt(do_not_submit=True)
 		pr.submit()
@@ -539,9 +548,11 @@
 
 	def test_pr_billing_status(self):
 		# PO -> PR1 -> PI and PO -> PI and PO -> PR2
+		from erpnext.buying.doctype.purchase_order.purchase_order import (
+			make_purchase_invoice as make_purchase_invoice_from_po,
+		)
+		from erpnext.buying.doctype.purchase_order.purchase_order import make_purchase_receipt
 		from erpnext.buying.doctype.purchase_order.test_purchase_order import create_purchase_order
-		from erpnext.buying.doctype.purchase_order.purchase_order \
-			import make_purchase_receipt, make_purchase_invoice as make_purchase_invoice_from_po
 
 		po = create_purchase_order()
 
@@ -748,7 +759,10 @@
 		pr.cancel()
 
 	def test_make_purchase_invoice_from_pr_for_returned_qty(self):
-		from erpnext.buying.doctype.purchase_order.test_purchase_order import create_purchase_order, create_pr_against_po
+		from erpnext.buying.doctype.purchase_order.test_purchase_order import (
+			create_pr_against_po,
+			create_purchase_order,
+		)
 
 		po = create_purchase_order()
 		pr = create_pr_against_po(po.name)
@@ -879,10 +893,15 @@
 
 
 	def test_subcontracted_pr_for_multi_transfer_batches(self):
+		from erpnext.buying.doctype.purchase_order.purchase_order import (
+			make_purchase_receipt,
+			make_rm_stock_entry,
+		)
+		from erpnext.buying.doctype.purchase_order.test_purchase_order import (
+			create_purchase_order,
+			update_backflush_based_on,
+		)
 		from erpnext.stock.doctype.stock_entry.test_stock_entry import make_stock_entry
-		from erpnext.buying.doctype.purchase_order.purchase_order import make_rm_stock_entry, make_purchase_receipt
-		from erpnext.buying.doctype.purchase_order.test_purchase_order import (update_backflush_based_on,
-			create_purchase_order)
 
 		update_backflush_based_on("Material Transferred for Subcontract")
 		item_code = "_Test Subcontracted FG Item 3"
@@ -952,8 +971,7 @@
 			- Create PI from PO and submit
 			- Create PR from PO and submit
 		"""
-		from erpnext.buying.doctype.purchase_order import test_purchase_order
-		from erpnext.buying.doctype.purchase_order import purchase_order
+		from erpnext.buying.doctype.purchase_order import purchase_order, test_purchase_order
 
 		po = test_purchase_order.create_purchase_order()
 
@@ -974,8 +992,7 @@
 			- Create partial PI from PO and submit
 			- Create PR from PO and submit
 		"""
-		from erpnext.buying.doctype.purchase_order import test_purchase_order
-		from erpnext.buying.doctype.purchase_order import purchase_order
+		from erpnext.buying.doctype.purchase_order import purchase_order, test_purchase_order
 
 		po = test_purchase_order.create_purchase_order()
 
@@ -1038,8 +1055,12 @@
 		frappe.db.set_value('Company', company, 'enable_perpetual_inventory_for_non_stock_items', before_test_value)
 
 	def test_purchase_receipt_with_exchange_rate_difference(self):
-		from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import make_purchase_invoice as create_purchase_invoice
-		from erpnext.accounts.doctype.purchase_invoice.purchase_invoice import make_purchase_receipt as create_purchase_receipt
+		from erpnext.accounts.doctype.purchase_invoice.purchase_invoice import (
+			make_purchase_receipt as create_purchase_receipt,
+		)
+		from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import (
+			make_purchase_invoice as create_purchase_invoice,
+		)
 
 		pi = create_purchase_invoice(company="_Test Company with perpetual inventory",
 			cost_center = "Main - TCP1",
@@ -1065,10 +1086,18 @@
 		self.assertEqual(discrepancy_caused_by_exchange_rate_diff, amount)
 
 	def test_payment_terms_are_fetched_when_creating_purchase_invoice(self):
-		from erpnext.accounts.doctype.payment_entry.test_payment_entry import create_payment_terms_template
+		from erpnext.accounts.doctype.payment_entry.test_payment_entry import (
+			create_payment_terms_template,
+		)
 		from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import make_purchase_invoice
-		from erpnext.buying.doctype.purchase_order.test_purchase_order import create_purchase_order, make_pr_against_po
-		from erpnext.selling.doctype.sales_order.test_sales_order import automatically_fetch_payment_terms, compare_payment_schedules
+		from erpnext.buying.doctype.purchase_order.test_purchase_order import (
+			create_purchase_order,
+			make_pr_against_po,
+		)
+		from erpnext.selling.doctype.sales_order.test_sales_order import (
+			automatically_fetch_payment_terms,
+			compare_payment_schedules,
+		)
 
 		automatically_fetch_payment_terms()
 
diff --git a/erpnext/stock/doctype/purchase_receipt_item/purchase_receipt_item.py b/erpnext/stock/doctype/purchase_receipt_item/purchase_receipt_item.py
index b79bb5d..2d25140 100644
--- a/erpnext/stock/doctype/purchase_receipt_item/purchase_receipt_item.py
+++ b/erpnext/stock/doctype/purchase_receipt_item/purchase_receipt_item.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class PurchaseReceiptItem(Document):
 	pass
diff --git a/erpnext/stock/doctype/putaway_rule/putaway_rule.py b/erpnext/stock/doctype/putaway_rule/putaway_rule.py
index 315e723..aa9d896 100644
--- a/erpnext/stock/doctype/putaway_rule/putaway_rule.py
+++ b/erpnext/stock/doctype/putaway_rule/putaway_rule.py
@@ -3,16 +3,20 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import copy
 import json
 from collections import defaultdict
-from six import string_types
+
+import frappe
 from frappe import _
-from frappe.utils import flt, floor, nowdate, cint
 from frappe.model.document import Document
-from erpnext.stock.utils import get_stock_balance
+from frappe.utils import cint, floor, flt, nowdate
+from six import string_types
+
 from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
+from erpnext.stock.utils import get_stock_balance
+
 
 class PutawayRule(Document):
 	def validate(self):
diff --git a/erpnext/stock/doctype/putaway_rule/test_putaway_rule.py b/erpnext/stock/doctype/putaway_rule/test_putaway_rule.py
index 0590ae1..0aa7610 100644
--- a/erpnext/stock/doctype/putaway_rule/test_putaway_rule.py
+++ b/erpnext/stock/doctype/putaway_rule/test_putaway_rule.py
@@ -2,14 +2,18 @@
 # Copyright (c) 2020, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
-import frappe
+
 import unittest
-from erpnext.stock.doctype.item.test_item import make_item
-from erpnext.stock.get_item_details import get_conversion_factor
-from erpnext.stock.doctype.warehouse.test_warehouse import create_warehouse
-from erpnext.stock.doctype.stock_entry.test_stock_entry import make_stock_entry
+
+import frappe
+
 from erpnext.stock.doctype.batch.test_batch import make_new_batch
+from erpnext.stock.doctype.item.test_item import make_item
 from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import make_purchase_receipt
+from erpnext.stock.doctype.stock_entry.test_stock_entry import make_stock_entry
+from erpnext.stock.doctype.warehouse.test_warehouse import create_warehouse
+from erpnext.stock.get_item_details import get_conversion_factor
+
 
 class TestPutawayRule(unittest.TestCase):
 	def setUp(self):
diff --git a/erpnext/stock/doctype/quality_inspection/quality_inspection.py b/erpnext/stock/doctype/quality_inspection/quality_inspection.py
index 469511a..8b2f8da 100644
--- a/erpnext/stock/doctype/quality_inspection/quality_inspection.py
+++ b/erpnext/stock/doctype/quality_inspection/quality_inspection.py
@@ -2,13 +2,17 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
+from frappe import _
 from frappe.model.document import Document
 from frappe.model.mapper import get_mapped_doc
-from frappe import _
-from frappe.utils import flt, cint
-from erpnext.stock.doctype.quality_inspection_template.quality_inspection_template \
-	import get_template_details
+from frappe.utils import cint, flt
+
+from erpnext.stock.doctype.quality_inspection_template.quality_inspection_template import (
+	get_template_details,
+)
+
 
 class QualityInspection(Document):
 	def validate(self):
diff --git a/erpnext/stock/doctype/quality_inspection_parameter/quality_inspection_parameter.py b/erpnext/stock/doctype/quality_inspection_parameter/quality_inspection_parameter.py
index 8678422..fa68201 100644
--- a/erpnext/stock/doctype/quality_inspection_parameter/quality_inspection_parameter.py
+++ b/erpnext/stock/doctype/quality_inspection_parameter/quality_inspection_parameter.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class QualityInspectionParameter(Document):
 	pass
diff --git a/erpnext/stock/doctype/quality_inspection_parameter/test_quality_inspection_parameter.py b/erpnext/stock/doctype/quality_inspection_parameter/test_quality_inspection_parameter.py
index cefdc08..f3041aa 100644
--- a/erpnext/stock/doctype/quality_inspection_parameter/test_quality_inspection_parameter.py
+++ b/erpnext/stock/doctype/quality_inspection_parameter/test_quality_inspection_parameter.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestQualityInspectionParameter(unittest.TestCase):
 	pass
diff --git a/erpnext/stock/doctype/quality_inspection_parameter_group/quality_inspection_parameter_group.py b/erpnext/stock/doctype/quality_inspection_parameter_group/quality_inspection_parameter_group.py
index 1a3b1a0..b5e28f3 100644
--- a/erpnext/stock/doctype/quality_inspection_parameter_group/quality_inspection_parameter_group.py
+++ b/erpnext/stock/doctype/quality_inspection_parameter_group/quality_inspection_parameter_group.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class QualityInspectionParameterGroup(Document):
 	pass
diff --git a/erpnext/stock/doctype/quality_inspection_parameter_group/test_quality_inspection_parameter_group.py b/erpnext/stock/doctype/quality_inspection_parameter_group/test_quality_inspection_parameter_group.py
index 212d4b8..ded47e8 100644
--- a/erpnext/stock/doctype/quality_inspection_parameter_group/test_quality_inspection_parameter_group.py
+++ b/erpnext/stock/doctype/quality_inspection_parameter_group/test_quality_inspection_parameter_group.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestQualityInspectionParameterGroup(unittest.TestCase):
 	pass
diff --git a/erpnext/stock/doctype/quality_inspection_reading/quality_inspection_reading.py b/erpnext/stock/doctype/quality_inspection_reading/quality_inspection_reading.py
index b10fa31..7b56603 100644
--- a/erpnext/stock/doctype/quality_inspection_reading/quality_inspection_reading.py
+++ b/erpnext/stock/doctype/quality_inspection_reading/quality_inspection_reading.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class QualityInspectionReading(Document):
 	pass
diff --git a/erpnext/stock/doctype/quality_inspection_template/quality_inspection_template.py b/erpnext/stock/doctype/quality_inspection_template/quality_inspection_template.py
index 971b3c2..50e28a6 100644
--- a/erpnext/stock/doctype/quality_inspection_template/quality_inspection_template.py
+++ b/erpnext/stock/doctype/quality_inspection_template/quality_inspection_template.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe.model.document import Document
 
+
 class QualityInspectionTemplate(Document):
 	pass
 
diff --git a/erpnext/stock/doctype/quality_inspection_template/test_quality_inspection_template.py b/erpnext/stock/doctype/quality_inspection_template/test_quality_inspection_template.py
index b16efa8..6286523 100644
--- a/erpnext/stock/doctype/quality_inspection_template/test_quality_inspection_template.py
+++ b/erpnext/stock/doctype/quality_inspection_template/test_quality_inspection_template.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestQualityInspectionTemplate(unittest.TestCase):
 	pass
diff --git a/erpnext/stock/doctype/quick_stock_balance/quick_stock_balance.py b/erpnext/stock/doctype/quick_stock_balance/quick_stock_balance.py
index efa9519..8ca5521 100644
--- a/erpnext/stock/doctype/quick_stock_balance/quick_stock_balance.py
+++ b/erpnext/stock/doctype/quick_stock_balance/quick_stock_balance.py
@@ -3,11 +3,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.model.document import Document
+
 from erpnext.stock.utils import get_stock_balance, get_stock_value_on
 
+
 class QuickStockBalance(Document):
 	pass
 
diff --git a/erpnext/stock/doctype/repost_item_valuation/repost_item_valuation.py b/erpnext/stock/doctype/repost_item_valuation/repost_item_valuation.py
index b22759d..62b3a6a 100644
--- a/erpnext/stock/doctype/repost_item_valuation/repost_item_valuation.py
+++ b/erpnext/stock/doctype/repost_item_valuation/repost_item_valuation.py
@@ -3,14 +3,22 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
-from rq.timeouts import JobTimeoutException
-from frappe.model.document import Document
-from frappe.utils import cint, get_link_to_form, add_to_date, now, today, time_diff_in_hours
-from erpnext.stock.stock_ledger import repost_future_sle
-from erpnext.accounts.utils import update_gl_entries_after, check_if_stock_and_account_balance_synced
-from frappe.utils.user import get_users_with_role
+
+import frappe
 from frappe import _
+from frappe.model.document import Document
+from frappe.utils import cint, get_link_to_form, now, today
+from frappe.utils.user import get_users_with_role
+from rq.timeouts import JobTimeoutException
+
+import erpnext
+from erpnext.accounts.utils import (
+	check_if_stock_and_account_balance_synced,
+	update_gl_entries_after,
+)
+from erpnext.stock.stock_ledger import repost_future_sle
+
+
 class RepostItemValuation(Document):
 	def validate(self):
 		self.set_status()
diff --git a/erpnext/stock/doctype/repost_item_valuation/test_repost_item_valuation.py b/erpnext/stock/doctype/repost_item_valuation/test_repost_item_valuation.py
index 13ceb68..c70a9ec 100644
--- a/erpnext/stock/doctype/repost_item_valuation/test_repost_item_valuation.py
+++ b/erpnext/stock/doctype/repost_item_valuation/test_repost_item_valuation.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestRepostItemValuation(unittest.TestCase):
 	pass
diff --git a/erpnext/stock/doctype/serial_no/serial_no.py b/erpnext/stock/doctype/serial_no/serial_no.py
index 319597f..82d8aae 100644
--- a/erpnext/stock/doctype/serial_no/serial_no.py
+++ b/erpnext/stock/doctype/serial_no/serial_no.py
@@ -2,19 +2,20 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import json
 
+import frappe
+from frappe import ValidationError, _
 from frappe.model.naming import make_autoname
-from frappe.utils import cint, cstr, flt, add_days, nowdate, getdate, get_link_to_form
-from erpnext.stock.get_item_details import get_reserved_qty_for_so
-
-from frappe import _, ValidationError
-
-from erpnext.controllers.stock_controller import StockController
+from frappe.utils import add_days, cint, cstr, flt, get_link_to_form, getdate, nowdate
 from six import string_types
 from six.moves import map
 
+from erpnext.controllers.stock_controller import StockController
+from erpnext.stock.get_item_details import get_reserved_qty_for_so
+
+
 class SerialNoCannotCreateDirectError(ValidationError): pass
 class SerialNoCannotCannotChangeError(ValidationError): pass
 class SerialNoNotRequiredError(ValidationError): pass
diff --git a/erpnext/stock/doctype/serial_no/test_serial_no.py b/erpnext/stock/doctype/serial_no/test_serial_no.py
index 0eccce3..818c163 100644
--- a/erpnext/stock/doctype/serial_no/test_serial_no.py
+++ b/erpnext/stock/doctype/serial_no/test_serial_no.py
@@ -5,12 +5,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, unittest
 
-from erpnext.stock.doctype.stock_entry.test_stock_entry import make_serialized_item
-from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import make_purchase_receipt
+import unittest
+
+import frappe
+
 from erpnext.stock.doctype.delivery_note.test_delivery_note import create_delivery_note
+from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import make_purchase_receipt
 from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
+from erpnext.stock.doctype.stock_entry.test_stock_entry import make_serialized_item
 from erpnext.stock.doctype.warehouse.test_warehouse import create_warehouse
 
 test_dependencies = ["Item"]
@@ -18,6 +21,7 @@
 
 from erpnext.stock.doctype.serial_no.serial_no import *
 
+
 class TestSerialNo(unittest.TestCase):
 	def test_cannot_create_direct(self):
 		frappe.delete_doc_if_exists("Serial No", "_TCSER0001")
diff --git a/erpnext/stock/doctype/shipment/shipment.py b/erpnext/stock/doctype/shipment/shipment.py
index 01fcee4..2cacd0d 100644
--- a/erpnext/stock/doctype/shipment/shipment.py
+++ b/erpnext/stock/doctype/shipment/shipment.py
@@ -3,12 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import flt, get_time
-from frappe.model.document import Document
-from erpnext.accounts.party import get_party_shipping_address
 from frappe.contacts.doctype.contact.contact import get_default_contact
+from frappe.model.document import Document
+from frappe.utils import flt, get_time
+
+from erpnext.accounts.party import get_party_shipping_address
+
 
 class Shipment(Document):
 	def validate(self):
diff --git a/erpnext/stock/doctype/shipment/test_shipment.py b/erpnext/stock/doctype/shipment/test_shipment.py
index db2f116..9914cf8 100644
--- a/erpnext/stock/doctype/shipment/test_shipment.py
+++ b/erpnext/stock/doctype/shipment/test_shipment.py
@@ -2,12 +2,15 @@
 # Copyright (c) 2020, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
+
+import unittest
 from datetime import date, timedelta
 
 import frappe
-import unittest
+
 from erpnext.stock.doctype.delivery_note.delivery_note import make_shipment
 
+
 class TestShipment(unittest.TestCase):
 	def test_shipment_from_delivery_note(self):
 		delivery_note = create_test_delivery_note()
diff --git a/erpnext/stock/doctype/shipment_delivery_note/shipment_delivery_note.py b/erpnext/stock/doctype/shipment_delivery_note/shipment_delivery_note.py
index 4342151..795c952 100644
--- a/erpnext/stock/doctype/shipment_delivery_note/shipment_delivery_note.py
+++ b/erpnext/stock/doctype/shipment_delivery_note/shipment_delivery_note.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class ShipmentDeliveryNote(Document):
 	pass
diff --git a/erpnext/stock/doctype/shipment_parcel/shipment_parcel.py b/erpnext/stock/doctype/shipment_parcel/shipment_parcel.py
index 53e6ed5..69fecb6 100644
--- a/erpnext/stock/doctype/shipment_parcel/shipment_parcel.py
+++ b/erpnext/stock/doctype/shipment_parcel/shipment_parcel.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class ShipmentParcel(Document):
 	pass
diff --git a/erpnext/stock/doctype/shipment_parcel_template/shipment_parcel_template.py b/erpnext/stock/doctype/shipment_parcel_template/shipment_parcel_template.py
index 2a8d58d..0eaa2d3 100644
--- a/erpnext/stock/doctype/shipment_parcel_template/shipment_parcel_template.py
+++ b/erpnext/stock/doctype/shipment_parcel_template/shipment_parcel_template.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class ShipmentParcelTemplate(Document):
 	pass
diff --git a/erpnext/stock/doctype/shipment_parcel_template/test_shipment_parcel_template.py b/erpnext/stock/doctype/shipment_parcel_template/test_shipment_parcel_template.py
index 6e2caa7..5f2a399 100644
--- a/erpnext/stock/doctype/shipment_parcel_template/test_shipment_parcel_template.py
+++ b/erpnext/stock/doctype/shipment_parcel_template/test_shipment_parcel_template.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestShipmentParcelTemplate(unittest.TestCase):
 	pass
diff --git a/erpnext/stock/doctype/stock_entry/stock_entry.py b/erpnext/stock/doctype/stock_entry/stock_entry.py
index c5c2868..41ca830 100644
--- a/erpnext/stock/doctype/stock_entry/stock_entry.py
+++ b/erpnext/stock/doctype/stock_entry/stock_entry.py
@@ -2,27 +2,39 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
-import frappe.defaults
-from frappe import _
-from frappe.utils import cstr, cint, flt, comma_or, getdate, nowdate, formatdate, format_time
-from erpnext.stock.utils import get_incoming_rate
-from erpnext.stock.stock_ledger import get_previous_sle, NegativeStockError, get_valuation_rate
-from erpnext.stock.get_item_details import get_bin_details, get_default_cost_center, get_conversion_factor, get_reserved_qty_for_so
-from erpnext.setup.doctype.item_group.item_group import get_item_group_defaults
-from erpnext.setup.doctype.brand.brand import get_brand_defaults
-from erpnext.stock.doctype.batch.batch import get_batch_no, set_batch_nos, get_batch_qty
-from erpnext.stock.doctype.item.item import get_item_defaults
-from erpnext.manufacturing.doctype.bom.bom import validate_bom_no, add_additional_cost
-from erpnext.stock.utils import get_bin
-from frappe.model.mapper import get_mapped_doc
-from erpnext.stock.doctype.serial_no.serial_no import update_serial_nos_after_submit, get_serial_nos
-from erpnext.stock.doctype.stock_reconciliation.stock_reconciliation import OpeningEntryAccountError
-from erpnext.accounts.general_ledger import process_gl_map
-from erpnext.controllers.taxes_and_totals import init_landed_taxes_and_totals
+
 import json
 
-from six import string_types, itervalues, iteritems
+import frappe
+from frappe import _
+from frappe.model.mapper import get_mapped_doc
+from frappe.utils import cint, comma_or, cstr, flt, format_time, formatdate, getdate, nowdate
+from six import iteritems, itervalues, string_types
+
+import erpnext
+from erpnext.accounts.general_ledger import process_gl_map
+from erpnext.controllers.taxes_and_totals import init_landed_taxes_and_totals
+from erpnext.manufacturing.doctype.bom.bom import add_additional_cost, validate_bom_no
+from erpnext.setup.doctype.brand.brand import get_brand_defaults
+from erpnext.setup.doctype.item_group.item_group import get_item_group_defaults
+from erpnext.stock.doctype.batch.batch import get_batch_no, get_batch_qty, set_batch_nos
+from erpnext.stock.doctype.item.item import get_item_defaults
+from erpnext.stock.doctype.serial_no.serial_no import (
+	get_serial_nos,
+	update_serial_nos_after_submit,
+)
+from erpnext.stock.doctype.stock_reconciliation.stock_reconciliation import (
+	OpeningEntryAccountError,
+)
+from erpnext.stock.get_item_details import (
+	get_bin_details,
+	get_conversion_factor,
+	get_default_cost_center,
+	get_reserved_qty_for_so,
+)
+from erpnext.stock.stock_ledger import NegativeStockError, get_previous_sle, get_valuation_rate
+from erpnext.stock.utils import get_bin, get_incoming_rate
+
 
 class IncorrectValuationRateError(frappe.ValidationError): pass
 class DuplicateEntryForWorkOrderError(frappe.ValidationError): pass
diff --git a/erpnext/stock/doctype/stock_entry/stock_entry_utils.py b/erpnext/stock/doctype/stock_entry/stock_entry_utils.py
index 563fcb0..f54dc46 100644
--- a/erpnext/stock/doctype/stock_entry/stock_entry_utils.py
+++ b/erpnext/stock/doctype/stock_entry/stock_entry_utils.py
@@ -2,11 +2,14 @@
 # See license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
-from frappe.utils import cint, flt
 
+import frappe
+from frappe.utils import cint, flt
 from six import string_types
 
+import erpnext
+
+
 @frappe.whitelist()
 def make_stock_entry(**args):
 	'''Helper function to make a Stock Entry
diff --git a/erpnext/stock/doctype/stock_entry/test_stock_entry.py b/erpnext/stock/doctype/stock_entry/test_stock_entry.py
index a0e7051..46619eb 100644
--- a/erpnext/stock/doctype/stock_entry/test_stock_entry.py
+++ b/erpnext/stock/doctype/stock_entry/test_stock_entry.py
@@ -2,21 +2,33 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, unittest
-import frappe.defaults
-from frappe.utils import flt, nowdate, nowtime
-from erpnext.stock.doctype.serial_no.serial_no import *
-from erpnext.stock.doctype.stock_ledger_entry.stock_ledger_entry import StockFreezeError
-from erpnext.stock.stock_ledger import get_previous_sle
+
+import unittest
+
+import frappe
 from frappe.permissions import add_user_permission, remove_user_permission
-from erpnext.stock.doctype.stock_reconciliation.test_stock_reconciliation import create_stock_reconciliation
-from erpnext.stock.doctype.item.test_item import set_item_variant_settings, make_item_variant, create_item
-from erpnext.stock.doctype.stock_entry.stock_entry_utils import make_stock_entry
-from erpnext.accounts.doctype.account.test_account import get_inventory_account
-from erpnext.stock.doctype.stock_entry.stock_entry import move_sample_to_retention_warehouse, make_stock_in_entry
-from erpnext.stock.doctype.stock_reconciliation.stock_reconciliation import OpeningEntryAccountError
+from frappe.utils import flt, nowdate, nowtime
 from six import iteritems
 
+from erpnext.accounts.doctype.account.test_account import get_inventory_account
+from erpnext.stock.doctype.item.test_item import (
+	create_item,
+	make_item_variant,
+	set_item_variant_settings,
+)
+from erpnext.stock.doctype.serial_no.serial_no import *  # noqa
+from erpnext.stock.doctype.stock_entry.stock_entry import move_sample_to_retention_warehouse
+from erpnext.stock.doctype.stock_entry.stock_entry_utils import make_stock_entry
+from erpnext.stock.doctype.stock_ledger_entry.stock_ledger_entry import StockFreezeError
+from erpnext.stock.doctype.stock_reconciliation.stock_reconciliation import (
+	OpeningEntryAccountError,
+)
+from erpnext.stock.doctype.stock_reconciliation.test_stock_reconciliation import (
+	create_stock_reconciliation,
+)
+from erpnext.stock.stock_ledger import get_previous_sle
+
+
 def get_sle(**args):
 	condition, values = "", []
 	for key, value in iteritems(args):
@@ -539,8 +551,9 @@
 		frappe.db.set_value("Stock Settings", None, "stock_frozen_upto_days", 0)
 
 	def test_work_order(self):
-		from erpnext.manufacturing.doctype.work_order.work_order \
-			import make_stock_entry as _make_stock_entry
+		from erpnext.manufacturing.doctype.work_order.work_order import (
+			make_stock_entry as _make_stock_entry,
+		)
 		bom_no, bom_operation_cost = frappe.db.get_value("BOM", {"item": "_Test FG Item 2",
 			"is_default": 1, "docstatus": 1}, ["name", "operating_cost"])
 
@@ -618,8 +631,8 @@
 		s2.cancel()
 
 	def test_retain_sample(self):
-		from erpnext.stock.doctype.warehouse.test_warehouse import create_warehouse
 		from erpnext.stock.doctype.batch.batch import get_batch_qty
+		from erpnext.stock.doctype.warehouse.test_warehouse import create_warehouse
 
 		create_warehouse("Test Warehouse for Sample Retention")
 		frappe.db.set_value("Stock Settings", None, "sample_retention_warehouse", "Test Warehouse for Sample Retention - _TC")
diff --git a/erpnext/stock/doctype/stock_entry_detail/stock_entry_detail.py b/erpnext/stock/doctype/stock_entry_detail/stock_entry_detail.py
index a5623fd..6c03425 100644
--- a/erpnext/stock/doctype/stock_entry_detail/stock_entry_detail.py
+++ b/erpnext/stock/doctype/stock_entry_detail/stock_entry_detail.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class StockEntryDetail(Document):
 	pass
diff --git a/erpnext/stock/doctype/stock_entry_type/stock_entry_type.py b/erpnext/stock/doctype/stock_entry_type/stock_entry_type.py
index 1069ec8..3d6e264 100644
--- a/erpnext/stock/doctype/stock_entry_type/stock_entry_type.py
+++ b/erpnext/stock/doctype/stock_entry_type/stock_entry_type.py
@@ -3,9 +3,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class StockEntryType(Document):
 	def validate(self):
 		if self.add_to_transit and self.purpose != 'Material Transfer':
diff --git a/erpnext/stock/doctype/stock_entry_type/test_stock_entry_type.py b/erpnext/stock/doctype/stock_entry_type/test_stock_entry_type.py
index 4fa73fd..7eea8f5 100644
--- a/erpnext/stock/doctype/stock_entry_type/test_stock_entry_type.py
+++ b/erpnext/stock/doctype/stock_entry_type/test_stock_entry_type.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestStockEntryType(unittest.TestCase):
 	pass
diff --git a/erpnext/stock/doctype/stock_ledger_entry/stock_ledger_entry.py b/erpnext/stock/doctype/stock_ledger_entry/stock_ledger_entry.py
index be1f00e..caa1d42 100644
--- a/erpnext/stock/doctype/stock_ledger_entry/stock_ledger_entry.py
+++ b/erpnext/stock/doctype/stock_ledger_entry/stock_ledger_entry.py
@@ -3,14 +3,18 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
+from datetime import date
+
 import frappe
 from frappe import _
-from frappe.utils import flt, getdate, add_days, formatdate, get_datetime, cint
-from frappe.model.document import Document
-from datetime import date
-from erpnext.controllers.item_variant import ItemTemplateCannotHaveStock
-from erpnext.accounts.utils import get_fiscal_year
 from frappe.core.doctype.role.role import get_users
+from frappe.model.document import Document
+from frappe.utils import add_days, cint, flt, formatdate, get_datetime, getdate
+
+from erpnext.accounts.utils import get_fiscal_year
+from erpnext.controllers.item_variant import ItemTemplateCannotHaveStock
+
 
 class StockFreezeError(frappe.ValidationError): pass
 class BackDatedStockTransaction(frappe.ValidationError): pass
@@ -27,7 +31,7 @@
 
 	def validate(self):
 		self.flags.ignore_submit_comment = True
-		from erpnext.stock.utils import validate_warehouse_company, validate_disabled_warehouse
+		from erpnext.stock.utils import validate_disabled_warehouse, validate_warehouse_company
 		self.validate_mandatory()
 		self.validate_item()
 		self.validate_batch()
diff --git a/erpnext/stock/doctype/stock_ledger_entry/test_stock_ledger_entry.py b/erpnext/stock/doctype/stock_ledger_entry/test_stock_ledger_entry.py
index af2ada8..61bae49 100644
--- a/erpnext/stock/doctype/stock_ledger_entry/test_stock_ledger_entry.py
+++ b/erpnext/stock/doctype/stock_ledger_entry/test_stock_ledger_entry.py
@@ -3,19 +3,25 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
-from frappe.utils import today, add_days
-from erpnext.stock.doctype.stock_entry.stock_entry_utils import make_stock_entry
-from erpnext.stock.doctype.stock_reconciliation.test_stock_reconciliation \
-	import create_stock_reconciliation
-from erpnext.stock.doctype.item.test_item import make_item
-from erpnext.stock.stock_ledger import get_previous_sle
-from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import make_purchase_receipt
-from erpnext.stock.doctype.landed_cost_voucher.test_landed_cost_voucher import create_landed_cost_voucher
-from erpnext.stock.doctype.delivery_note.test_delivery_note import create_delivery_note
-from erpnext.stock.doctype.stock_ledger_entry.stock_ledger_entry import BackDatedStockTransaction
+
+import frappe
 from frappe.core.page.permission_manager.permission_manager import reset
+from frappe.utils import add_days, today
+
+from erpnext.stock.doctype.delivery_note.test_delivery_note import create_delivery_note
+from erpnext.stock.doctype.item.test_item import make_item
+from erpnext.stock.doctype.landed_cost_voucher.test_landed_cost_voucher import (
+	create_landed_cost_voucher,
+)
+from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import make_purchase_receipt
+from erpnext.stock.doctype.stock_entry.stock_entry_utils import make_stock_entry
+from erpnext.stock.doctype.stock_ledger_entry.stock_ledger_entry import BackDatedStockTransaction
+from erpnext.stock.doctype.stock_reconciliation.test_stock_reconciliation import (
+	create_stock_reconciliation,
+)
+from erpnext.stock.stock_ledger import get_previous_sle
+
 
 class TestStockLedgerEntry(unittest.TestCase):
 	def setUp(self):
diff --git a/erpnext/stock/doctype/stock_reconciliation/stock_reconciliation.py b/erpnext/stock/doctype/stock_reconciliation/stock_reconciliation.py
index 24b7b9a..fa96c5a 100644
--- a/erpnext/stock/doctype/stock_reconciliation/stock_reconciliation.py
+++ b/erpnext/stock/doctype/stock_reconciliation/stock_reconciliation.py
@@ -2,15 +2,18 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
-import frappe.defaults
-from frappe import msgprint, _
-from frappe.utils import cstr, flt, cint
-from erpnext.controllers.stock_controller import StockController
+
+import frappe
+from frappe import _, msgprint
+from frappe.utils import cint, cstr, flt
+
+import erpnext
 from erpnext.accounts.utils import get_company_default
-from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
-from erpnext.stock.utils import get_stock_balance, get_incoming_rate, get_available_serial_nos
+from erpnext.controllers.stock_controller import StockController
 from erpnext.stock.doctype.batch.batch import get_batch_qty
+from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
+from erpnext.stock.utils import get_stock_balance
+
 
 class OpeningEntryAccountError(frappe.ValidationError): pass
 class EmptyStockReconciliationItemsError(frappe.ValidationError): pass
@@ -159,8 +162,11 @@
 			raise frappe.ValidationError(self.validation_messages)
 
 	def validate_item(self, item_code, row):
-		from erpnext.stock.doctype.item.item import validate_end_of_life, \
-			validate_is_stock_item, validate_cancelled_item
+		from erpnext.stock.doctype.item.item import (
+			validate_cancelled_item,
+			validate_end_of_life,
+			validate_is_stock_item,
+		)
 
 		# using try except to catch all validation msgs and display together
 
diff --git a/erpnext/stock/doctype/stock_reconciliation/test_stock_reconciliation.py b/erpnext/stock/doctype/stock_reconciliation/test_stock_reconciliation.py
index e438127..8647bee 100644
--- a/erpnext/stock/doctype/stock_reconciliation/test_stock_reconciliation.py
+++ b/erpnext/stock/doctype/stock_reconciliation/test_stock_reconciliation.py
@@ -5,16 +5,23 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, unittest
-from frappe.utils import flt, nowdate, nowtime, random_string, add_days
+
+import unittest
+
+import frappe
+from frappe.utils import add_days, flt, nowdate, nowtime, random_string
+
 from erpnext.accounts.utils import get_stock_and_account_balance
-from erpnext.stock.stock_ledger import get_previous_sle, update_entries_after
-from erpnext.stock.doctype.stock_reconciliation.stock_reconciliation import EmptyStockReconciliationItemsError, get_items
-from erpnext.stock.doctype.warehouse.test_warehouse import create_warehouse
 from erpnext.stock.doctype.item.test_item import create_item
-from erpnext.stock.utils import get_incoming_rate, get_stock_value_on, get_valuation_method
-from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
 from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import make_purchase_receipt
+from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
+from erpnext.stock.doctype.stock_reconciliation.stock_reconciliation import (
+	EmptyStockReconciliationItemsError,
+	get_items,
+)
+from erpnext.stock.doctype.warehouse.test_warehouse import create_warehouse
+from erpnext.stock.stock_ledger import get_previous_sle, update_entries_after
+from erpnext.stock.utils import get_incoming_rate, get_stock_value_on, get_valuation_method
 from erpnext.tests.utils import change_settings
 
 
@@ -322,8 +329,8 @@
 			SR3		| Reco	|	0	|	1		(posting date: today-1) [backdated & blocked]
 			DN2		| DN	|	-2	|	8(-1)	(posting date: today)
 		"""
-		from erpnext.stock.stock_ledger import NegativeStockError
 		from erpnext.stock.doctype.delivery_note.test_delivery_note import create_delivery_note
+		from erpnext.stock.stock_ledger import NegativeStockError
 
 		item_code = "Backdated-Reco-Item"
 		warehouse = "_Test Warehouse - _TC"
@@ -363,8 +370,8 @@
 			SR  | Reco | 100 | 100     (posting date: today-1) (shouldn't be cancelled after DN)
 			DN  | DN   | 100 |   0     (posting date: today)
 		"""
-		from erpnext.stock.stock_ledger import NegativeStockError
 		from erpnext.stock.doctype.delivery_note.test_delivery_note import create_delivery_note
+		from erpnext.stock.stock_ledger import NegativeStockError
 		frappe.db.commit()
 
 		item_code = "Backdated-Reco-Cancellation-Item"
diff --git a/erpnext/stock/doctype/stock_reconciliation_item/stock_reconciliation_item.py b/erpnext/stock/doctype/stock_reconciliation_item/stock_reconciliation_item.py
index cc1e19d..227e727 100644
--- a/erpnext/stock/doctype/stock_reconciliation_item/stock_reconciliation_item.py
+++ b/erpnext/stock/doctype/stock_reconciliation_item/stock_reconciliation_item.py
@@ -2,8 +2,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class StockReconciliationItem(Document):
 	pass
diff --git a/erpnext/stock/doctype/stock_settings/stock_settings.py b/erpnext/stock/doctype/stock_settings/stock_settings.py
index 2dd7c6f..2a634b3 100644
--- a/erpnext/stock/doctype/stock_settings/stock_settings.py
+++ b/erpnext/stock/doctype/stock_settings/stock_settings.py
@@ -4,12 +4,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.model.document import Document
-from frappe.utils.html_utils import clean_html
-from frappe.utils import cint
 from frappe.custom.doctype.property_setter.property_setter import make_property_setter
+from frappe.model.document import Document
+from frappe.utils import cint
+from frappe.utils.html_utils import clean_html
+
 
 class StockSettings(Document):
 	def validate(self):
diff --git a/erpnext/stock/doctype/stock_settings/test_stock_settings.py b/erpnext/stock/doctype/stock_settings/test_stock_settings.py
index 42a78f7..7e80904 100644
--- a/erpnext/stock/doctype/stock_settings/test_stock_settings.py
+++ b/erpnext/stock/doctype/stock_settings/test_stock_settings.py
@@ -3,9 +3,11 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
+
 class TestStockSettings(unittest.TestCase):
 	def setUp(self):
 		frappe.db.set_value("Stock Settings", None, "clean_description_html", 0)
diff --git a/erpnext/stock/doctype/uom_category/test_uom_category.py b/erpnext/stock/doctype/uom_category/test_uom_category.py
index 33bd408..dd5510a 100644
--- a/erpnext/stock/doctype/uom_category/test_uom_category.py
+++ b/erpnext/stock/doctype/uom_category/test_uom_category.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestUOMCategory(unittest.TestCase):
 	pass
diff --git a/erpnext/stock/doctype/uom_category/uom_category.py b/erpnext/stock/doctype/uom_category/uom_category.py
index d5c339e..282ebb2 100644
--- a/erpnext/stock/doctype/uom_category/uom_category.py
+++ b/erpnext/stock/doctype/uom_category/uom_category.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class UOMCategory(Document):
 	pass
diff --git a/erpnext/stock/doctype/uom_conversion_detail/uom_conversion_detail.py b/erpnext/stock/doctype/uom_conversion_detail/uom_conversion_detail.py
index fdead20..9d9d4c6 100644
--- a/erpnext/stock/doctype/uom_conversion_detail/uom_conversion_detail.py
+++ b/erpnext/stock/doctype/uom_conversion_detail/uom_conversion_detail.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class UOMConversionDetail(Document):
 	pass
diff --git a/erpnext/stock/doctype/variant_field/test_variant_field.py b/erpnext/stock/doctype/variant_field/test_variant_field.py
index 53024bd..408e33b 100644
--- a/erpnext/stock/doctype/variant_field/test_variant_field.py
+++ b/erpnext/stock/doctype/variant_field/test_variant_field.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestVariantField(unittest.TestCase):
 	pass
diff --git a/erpnext/stock/doctype/variant_field/variant_field.py b/erpnext/stock/doctype/variant_field/variant_field.py
index a77301e..abcfdc7 100644
--- a/erpnext/stock/doctype/variant_field/variant_field.py
+++ b/erpnext/stock/doctype/variant_field/variant_field.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class VariantField(Document):
 	pass
diff --git a/erpnext/stock/doctype/warehouse/test_warehouse.py b/erpnext/stock/doctype/warehouse/test_warehouse.py
index 6e429a2..1ca7181 100644
--- a/erpnext/stock/doctype/warehouse/test_warehouse.py
+++ b/erpnext/stock/doctype/warehouse/test_warehouse.py
@@ -5,13 +5,13 @@
 import unittest
 
 import frappe
-from frappe.utils import cint
 from frappe.test_runner import make_test_records
+from frappe.utils import cint
 
 import erpnext
-from erpnext.stock.doctype.stock_entry.stock_entry_utils import make_stock_entry
-from erpnext.accounts.doctype.account.test_account import get_inventory_account, create_account
+from erpnext.accounts.doctype.account.test_account import create_account, get_inventory_account
 from erpnext.stock.doctype.item.test_item import create_item
+from erpnext.stock.doctype.stock_entry.stock_entry_utils import make_stock_entry
 
 test_records = frappe.get_test_records('Warehouse')
 
diff --git a/erpnext/stock/doctype/warehouse/warehouse.py b/erpnext/stock/doctype/warehouse/warehouse.py
index 3abc139..ecd8707 100644
--- a/erpnext/stock/doctype/warehouse/warehouse.py
+++ b/erpnext/stock/doctype/warehouse/warehouse.py
@@ -2,13 +2,18 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
-from frappe.utils import cint, flt
-from frappe import throw, _
+
 from collections import defaultdict
-from frappe.utils.nestedset import NestedSet
-from erpnext.stock import get_warehouse_account
+
+import frappe
+from frappe import _, throw
 from frappe.contacts.address_and_contact import load_address_and_contact
+from frappe.utils import cint, flt
+from frappe.utils.nestedset import NestedSet
+
+import erpnext
+from erpnext.stock import get_warehouse_account
+
 
 class Warehouse(NestedSet):
 	nsm_parent_field = 'parent_warehouse'
diff --git a/erpnext/stock/doctype/warehouse_type/test_warehouse_type.py b/erpnext/stock/doctype/warehouse_type/test_warehouse_type.py
index 39f4b23..846e63b 100644
--- a/erpnext/stock/doctype/warehouse_type/test_warehouse_type.py
+++ b/erpnext/stock/doctype/warehouse_type/test_warehouse_type.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestWarehouseType(unittest.TestCase):
 	pass
diff --git a/erpnext/stock/doctype/warehouse_type/warehouse_type.py b/erpnext/stock/doctype/warehouse_type/warehouse_type.py
index 4b7d8d8..fd83d78 100644
--- a/erpnext/stock/doctype/warehouse_type/warehouse_type.py
+++ b/erpnext/stock/doctype/warehouse_type/warehouse_type.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class WarehouseType(Document):
 	pass
diff --git a/erpnext/stock/get_item_details.py b/erpnext/stock/get_item_details.py
index c72073c..d578e6a 100644
--- a/erpnext/stock/get_item_details.py
+++ b/erpnext/stock/get_item_details.py
@@ -2,22 +2,27 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
+import json
+
 import frappe
 from frappe import _, throw
-from frappe.utils import flt, cint, add_days, cstr, add_months, getdate
-import json, copy
-from erpnext.accounts.doctype.pricing_rule.pricing_rule import get_pricing_rule_for_item, set_transaction_type
-from erpnext.setup.utils import get_exchange_rate
 from frappe.model.meta import get_field_precision
-from erpnext.stock.doctype.batch.batch import get_batch_no
-from erpnext import get_company_currency
-from erpnext.stock.doctype.item.item import get_item_defaults, get_uom_conv_factor
-from erpnext.stock.doctype.price_list.price_list import get_price_list_details
-from erpnext.setup.doctype.item_group.item_group import get_item_group_defaults
-from erpnext.setup.doctype.brand.brand import get_brand_defaults
-from erpnext.stock.doctype.item_manufacturer.item_manufacturer import get_item_manufacturer_part_no
+from frappe.utils import add_days, add_months, cint, cstr, flt, getdate
+from six import iteritems, string_types
 
-from six import string_types, iteritems
+from erpnext import get_company_currency
+from erpnext.accounts.doctype.pricing_rule.pricing_rule import (
+	get_pricing_rule_for_item,
+	set_transaction_type,
+)
+from erpnext.setup.doctype.brand.brand import get_brand_defaults
+from erpnext.setup.doctype.item_group.item_group import get_item_group_defaults
+from erpnext.setup.utils import get_exchange_rate
+from erpnext.stock.doctype.batch.batch import get_batch_no
+from erpnext.stock.doctype.item.item import get_item_defaults, get_uom_conv_factor
+from erpnext.stock.doctype.item_manufacturer.item_manufacturer import get_item_manufacturer_part_no
+from erpnext.stock.doctype.price_list.price_list import get_price_list_details
 
 sales_doctypes = ['Quotation', 'Sales Order', 'Delivery Note', 'Sales Invoice', 'POS Invoice']
 purchase_doctypes = ['Material Request', 'Supplier Quotation', 'Purchase Order', 'Purchase Receipt', 'Purchase Invoice']
diff --git a/erpnext/stock/reorder_item.py b/erpnext/stock/reorder_item.py
index 4d8dcc6..3cd4cd2 100644
--- a/erpnext/stock/reorder_item.py
+++ b/erpnext/stock/reorder_item.py
@@ -2,11 +2,15 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
-import erpnext
+
 import json
-from frappe.utils import flt, nowdate, add_days, cint
+
+import frappe
 from frappe import _
+from frappe.utils import add_days, cint, flt, nowdate
+
+import erpnext
+
 
 def reorder_item():
 	""" Reorder item if stock reaches reorder level"""
diff --git a/erpnext/stock/report/batch_item_expiry_status/batch_item_expiry_status.py b/erpnext/stock/report/batch_item_expiry_status/batch_item_expiry_status.py
index 29689b1..da57bad 100644
--- a/erpnext/stock/report/batch_item_expiry_status/batch_item_expiry_status.py
+++ b/erpnext/stock/report/batch_item_expiry_status/batch_item_expiry_status.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import flt, cint, getdate
+from frappe.utils import cint, getdate
+
 
 def execute(filters=None):
 	if not filters: filters = {}
diff --git a/erpnext/stock/report/bom_search/bom_search.py b/erpnext/stock/report/bom_search/bom_search.py
index e3955c9..8b583f3 100644
--- a/erpnext/stock/report/bom_search/bom_search.py
+++ b/erpnext/stock/report/bom_search/bom_search.py
@@ -2,10 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, json
 
+import frappe
 from six import iteritems
 
+
 def execute(filters=None):
 	data = []
 	parents = {
diff --git a/erpnext/stock/report/cogs_by_item_group/cogs_by_item_group.py b/erpnext/stock/report/cogs_by_item_group/cogs_by_item_group.py
index 7532d02..5f6184d 100644
--- a/erpnext/stock/report/cogs_by_item_group/cogs_by_item_group.py
+++ b/erpnext/stock/report/cogs_by_item_group/cogs_by_item_group.py
@@ -1,8 +1,8 @@
 # Copyright (c) 2013, Frappe Technologies Pvt. Ltd. and contributors
 # For license information, please see license.txt
 
-from collections import OrderedDict
 import datetime
+from collections import OrderedDict
 from typing import Dict, List, Tuple, Union
 
 import frappe
@@ -11,7 +11,6 @@
 
 from erpnext.accounts.report.general_ledger.general_ledger import get_gl_entries
 
-
 Filters = frappe._dict
 Row = frappe._dict
 Data = List[Row]
diff --git a/erpnext/stock/report/delayed_item_report/delayed_item_report.py b/erpnext/stock/report/delayed_item_report/delayed_item_report.py
index 6130666..1dd0478 100644
--- a/erpnext/stock/report/delayed_item_report/delayed_item_report.py
+++ b/erpnext/stock/report/delayed_item_report/delayed_item_report.py
@@ -2,10 +2,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import date_diff
 
+
 def execute(filters=None, consolidated = False):
 	data, columns = DelayedItemReport(filters).run()
 
diff --git a/erpnext/stock/report/delayed_order_report/delayed_order_report.py b/erpnext/stock/report/delayed_order_report/delayed_order_report.py
index d915160..677e30c 100644
--- a/erpnext/stock/report/delayed_order_report/delayed_order_report.py
+++ b/erpnext/stock/report/delayed_order_report/delayed_order_report.py
@@ -2,9 +2,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe import _
+
 from erpnext.stock.report.delayed_item_report.delayed_item_report import DelayedItemReport
 
+
 def execute(filters=None):
 	columns, data = [], []
 
diff --git a/erpnext/stock/report/delivery_note_trends/delivery_note_trends.py b/erpnext/stock/report/delivery_note_trends/delivery_note_trends.py
index 77fd2ff..6d03ec1 100644
--- a/erpnext/stock/report/delivery_note_trends/delivery_note_trends.py
+++ b/erpnext/stock/report/delivery_note_trends/delivery_note_trends.py
@@ -2,9 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe import _
-from erpnext.controllers.trends	import get_columns,get_data
+
+from erpnext.controllers.trends import get_columns, get_data
+
 
 def execute(filters=None):
 	if not filters: filters ={}
diff --git a/erpnext/stock/report/incorrect_balance_qty_after_transaction/incorrect_balance_qty_after_transaction.py b/erpnext/stock/report/incorrect_balance_qty_after_transaction/incorrect_balance_qty_after_transaction.py
index 00125e7..cf27326 100644
--- a/erpnext/stock/report/incorrect_balance_qty_after_transaction/incorrect_balance_qty_after_transaction.py
+++ b/erpnext/stock/report/incorrect_balance_qty_after_transaction/incorrect_balance_qty_after_transaction.py
@@ -3,8 +3,9 @@
 
 import frappe
 from frappe import _
-from six import iteritems
 from frappe.utils import flt
+from six import iteritems
+
 
 def execute(filters=None):
 	columns, data = [], []
diff --git a/erpnext/stock/report/incorrect_serial_no_valuation/incorrect_serial_no_valuation.py b/erpnext/stock/report/incorrect_serial_no_valuation/incorrect_serial_no_valuation.py
index b3b7594..5f03c7c 100644
--- a/erpnext/stock/report/incorrect_serial_no_valuation/incorrect_serial_no_valuation.py
+++ b/erpnext/stock/report/incorrect_serial_no_valuation/incorrect_serial_no_valuation.py
@@ -1,12 +1,15 @@
 # Copyright (c) 2013, Frappe Technologies Pvt. Ltd. and contributors
 # For license information, please see license.txt
 
-import frappe
 import copy
+
+import frappe
 from frappe import _
 from six import iteritems
+
 from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
 
+
 def execute(filters=None):
 	columns, data = [], []
 	columns = get_columns()
diff --git a/erpnext/stock/report/incorrect_stock_value_report/incorrect_stock_value_report.py b/erpnext/stock/report/incorrect_stock_value_report/incorrect_stock_value_report.py
index c8f60a1..bc520ae 100644
--- a/erpnext/stock/report/incorrect_stock_value_report/incorrect_stock_value_report.py
+++ b/erpnext/stock/report/incorrect_stock_value_report/incorrect_stock_value_report.py
@@ -2,13 +2,16 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-import erpnext
 from frappe import _
+from frappe.utils import add_days, getdate, today
 from six import iteritems
-from frappe.utils import add_days, today, getdate
-from erpnext.stock.utils import get_stock_value_on
+
+import erpnext
 from erpnext.accounts.utils import get_stock_and_account_balance
+from erpnext.stock.utils import get_stock_value_on
+
 
 def execute(filters=None):
 	if not erpnext.is_perpetual_inventory_enabled(filters.company):
diff --git a/erpnext/stock/report/item_price_stock/item_price_stock.py b/erpnext/stock/report/item_price_stock/item_price_stock.py
index db7498b..6ffb5c8 100644
--- a/erpnext/stock/report/item_price_stock/item_price_stock.py
+++ b/erpnext/stock/report/item_price_stock/item_price_stock.py
@@ -1,9 +1,11 @@
 # Copyright (c) 2013, Frappe Technologies Pvt. Ltd. and contributors
 # For license information, please see license.txt
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 def execute(filters=None):
 	columns, data = [], []
 	columns=get_columns()
diff --git a/erpnext/stock/report/item_prices/item_prices.py b/erpnext/stock/report/item_prices/item_prices.py
index 12f3297..aa5ae0e 100644
--- a/erpnext/stock/report/item_prices/item_prices.py
+++ b/erpnext/stock/report/item_prices/item_prices.py
@@ -2,10 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe import msgprint, _
+from frappe import _
 from frappe.utils import flt
 
+
 def execute(filters=None):
 	if not filters: filters = {}
 
diff --git a/erpnext/stock/report/item_shortage_report/item_shortage_report.py b/erpnext/stock/report/item_shortage_report/item_shortage_report.py
index c67eed7..1438e6c 100644
--- a/erpnext/stock/report/item_shortage_report/item_shortage_report.py
+++ b/erpnext/stock/report/item_shortage_report/item_shortage_report.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 def execute(filters=None):
 	columns = get_columns()
 	conditions = get_conditions(filters)
diff --git a/erpnext/stock/report/item_variant_details/item_variant_details.py b/erpnext/stock/report/item_variant_details/item_variant_details.py
index d8563d7..eedda53 100644
--- a/erpnext/stock/report/item_variant_details/item_variant_details.py
+++ b/erpnext/stock/report/item_variant_details/item_variant_details.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 def execute(filters=None):
 	columns = get_columns(filters.item)
 	data = get_data(filters.item)
diff --git a/erpnext/stock/report/itemwise_recommended_reorder_level/itemwise_recommended_reorder_level.py b/erpnext/stock/report/itemwise_recommended_reorder_level/itemwise_recommended_reorder_level.py
index 2e13aa0..08869af 100644
--- a/erpnext/stock/report/itemwise_recommended_reorder_level/itemwise_recommended_reorder_level.py
+++ b/erpnext/stock/report/itemwise_recommended_reorder_level/itemwise_recommended_reorder_level.py
@@ -4,7 +4,8 @@
 
 import frappe
 from frappe import _
-from frappe.utils import getdate, flt
+from frappe.utils import flt, getdate
+
 
 def execute(filters=None):
 	if not filters: filters = {}
diff --git a/erpnext/stock/report/process_loss_report/process_loss_report.py b/erpnext/stock/report/process_loss_report/process_loss_report.py
index ebb32f1..499c49f 100644
--- a/erpnext/stock/report/process_loss_report/process_loss_report.py
+++ b/erpnext/stock/report/process_loss_report/process_loss_report.py
@@ -1,9 +1,10 @@
 # Copyright (c) 2013, Frappe Technologies Pvt. Ltd. and contributors
 # For license information, please see license.txt
 
+from typing import Dict, List, Tuple
+
 import frappe
 from frappe import _
-from typing import Dict, List, Tuple
 
 Filters = frappe._dict
 Row = frappe._dict
diff --git a/erpnext/stock/report/product_bundle_balance/product_bundle_balance.py b/erpnext/stock/report/product_bundle_balance/product_bundle_balance.py
index 8fffbcc..2e298e7 100644
--- a/erpnext/stock/report/product_bundle_balance/product_bundle_balance.py
+++ b/erpnext/stock/report/product_bundle_balance/product_bundle_balance.py
@@ -2,12 +2,14 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import flt
-from erpnext.stock.report.stock_ledger.stock_ledger import get_item_group_condition
 from six import iteritems
 
+from erpnext.stock.report.stock_ledger.stock_ledger import get_item_group_condition
+
 
 def execute(filters=None):
 	if not filters:
diff --git a/erpnext/stock/report/purchase_receipt_trends/purchase_receipt_trends.py b/erpnext/stock/report/purchase_receipt_trends/purchase_receipt_trends.py
index 0d96ea6..2959532 100644
--- a/erpnext/stock/report/purchase_receipt_trends/purchase_receipt_trends.py
+++ b/erpnext/stock/report/purchase_receipt_trends/purchase_receipt_trends.py
@@ -2,9 +2,11 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe import _
-from erpnext.controllers.trends	import get_columns,get_data
+
+from erpnext.controllers.trends import get_columns, get_data
+
 
 def execute(filters=None):
 	if not filters: filters ={}
diff --git a/erpnext/stock/report/serial_no_ledger/serial_no_ledger.py b/erpnext/stock/report/serial_no_ledger/serial_no_ledger.py
index cc3aa35..897a130 100644
--- a/erpnext/stock/report/serial_no_ledger/serial_no_ledger.py
+++ b/erpnext/stock/report/serial_no_ledger/serial_no_ledger.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe import _
+
 from erpnext.stock.stock_ledger import get_stock_ledger_entries
-from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
+
 
 def execute(filters=None):
 	columns = get_columns(filters)
diff --git a/erpnext/stock/report/stock_ageing/stock_ageing.py b/erpnext/stock/report/stock_ageing/stock_ageing.py
index 11d50cd..b4eca0b 100644
--- a/erpnext/stock/report/stock_ageing/stock_ageing.py
+++ b/erpnext/stock/report/stock_ageing/stock_ageing.py
@@ -2,13 +2,17 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
+from operator import itemgetter
+
 import frappe
 from frappe import _
-from operator import itemgetter
-from frappe.utils import date_diff, flt, cint
+from frappe.utils import cint, date_diff, flt
 from six import iteritems
+
 from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
 
+
 def execute(filters=None):
 	columns = get_columns(filters)
 	item_details = get_fifo_queue(filters)
diff --git a/erpnext/stock/report/stock_analytics/stock_analytics.py b/erpnext/stock/report/stock_analytics/stock_analytics.py
index a1e1e7f..ddc8310 100644
--- a/erpnext/stock/report/stock_analytics/stock_analytics.py
+++ b/erpnext/stock/report/stock_analytics/stock_analytics.py
@@ -4,13 +4,18 @@
 
 import frappe
 from frappe import _, scrub
-from frappe.utils import getdate, get_quarter_start, get_first_day_of_week
 from frappe.utils import get_first_day as get_first_day_of_month
+from frappe.utils import get_first_day_of_week, get_quarter_start, getdate
 
-from erpnext.stock.report.stock_balance.stock_balance import (get_items, get_stock_ledger_entries, get_item_details)
 from erpnext.accounts.utils import get_fiscal_year
+from erpnext.stock.report.stock_balance.stock_balance import (
+	get_item_details,
+	get_items,
+	get_stock_ledger_entries,
+)
 from erpnext.stock.utils import is_reposting_item_valuation_in_progress
 
+
 def execute(filters=None):
 	is_reposting_item_valuation_in_progress()
 	filters = frappe._dict(filters or {})
diff --git a/erpnext/stock/report/stock_analytics/test_stock_analytics.py b/erpnext/stock/report/stock_analytics/test_stock_analytics.py
index 00e268b..21e1205 100644
--- a/erpnext/stock/report/stock_analytics/test_stock_analytics.py
+++ b/erpnext/stock/report/stock_analytics/test_stock_analytics.py
@@ -2,8 +2,8 @@
 import unittest
 
 from frappe import _dict
-from erpnext.accounts.utils import get_fiscal_year
 
+from erpnext.accounts.utils import get_fiscal_year
 from erpnext.stock.report.stock_analytics.stock_analytics import get_period_date_ranges
 
 
diff --git a/erpnext/stock/report/stock_and_account_value_comparison/stock_and_account_value_comparison.py b/erpnext/stock/report/stock_and_account_value_comparison/stock_and_account_value_comparison.py
index 7e0c0e8..f64774a 100644
--- a/erpnext/stock/report/stock_and_account_value_comparison/stock_and_account_value_comparison.py
+++ b/erpnext/stock/report/stock_and_account_value_comparison/stock_and_account_value_comparison.py
@@ -2,12 +2,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
+
+import frappe
 from frappe import _
-from erpnext.accounts.utils import get_stock_accounts
-from erpnext.accounts.utils import get_currency_precision
+
+import erpnext
+from erpnext.accounts.utils import get_currency_precision, get_stock_accounts
 from erpnext.stock.doctype.warehouse.warehouse import get_warehouses_based_on_account
 
+
 def execute(filters=None):
 	if not erpnext.is_perpetual_inventory_enabled(filters.company):
 		frappe.throw(_("Perpetual inventory required for the company {0} to view this report.")
diff --git a/erpnext/stock/report/stock_balance/stock_balance.py b/erpnext/stock/report/stock_balance/stock_balance.py
index f530ac2..fc5d5c1 100644
--- a/erpnext/stock/report/stock_balance/stock_balance.py
+++ b/erpnext/stock/report/stock_balance/stock_balance.py
@@ -2,17 +2,20 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-from operator import itemgetter
-import frappe, erpnext
-from frappe import _
-from frappe.utils import flt, cint, getdate, now, date_diff
-from erpnext.stock.utils import add_additional_uom_columns
-from erpnext.stock.report.stock_ledger.stock_ledger import get_item_group_condition
-from erpnext.stock.utils import is_reposting_item_valuation_in_progress
-from erpnext.stock.report.stock_ageing.stock_ageing import get_fifo_queue, get_average_age
 
+from operator import itemgetter
+
+import frappe
+from frappe import _
+from frappe.utils import cint, date_diff, flt, getdate
 from six import iteritems
 
+import erpnext
+from erpnext.stock.report.stock_ageing.stock_ageing import get_average_age, get_fifo_queue
+from erpnext.stock.report.stock_ledger.stock_ledger import get_item_group_condition
+from erpnext.stock.utils import add_additional_uom_columns, is_reposting_item_valuation_in_progress
+
+
 def execute(filters=None):
 	is_reposting_item_valuation_in_progress()
 	if not filters: filters = {}
diff --git a/erpnext/stock/report/stock_ledger/stock_ledger.py b/erpnext/stock/report/stock_ledger/stock_ledger.py
index b6923e9..1ea58fe 100644
--- a/erpnext/stock/report/stock_ledger/stock_ledger.py
+++ b/erpnext/stock/report/stock_ledger/stock_ledger.py
@@ -4,10 +4,15 @@
 from __future__ import unicode_literals
 
 import frappe
-from frappe.utils import cint, flt
-from erpnext.stock.utils import update_included_uom_in_report, is_reposting_item_valuation_in_progress
 from frappe import _
+from frappe.utils import cint, flt
+
 from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
+from erpnext.stock.utils import (
+	is_reposting_item_valuation_in_progress,
+	update_included_uom_in_report,
+)
+
 
 def execute(filters=None):
 	is_reposting_item_valuation_in_progress()
diff --git a/erpnext/stock/report/stock_projected_qty/stock_projected_qty.py b/erpnext/stock/report/stock_projected_qty/stock_projected_qty.py
index 7956f2e..16f7c30 100644
--- a/erpnext/stock/report/stock_projected_qty/stock_projected_qty.py
+++ b/erpnext/stock/report/stock_projected_qty/stock_projected_qty.py
@@ -2,11 +2,17 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import flt, today
-from erpnext.stock.utils import update_included_uom_in_report, is_reposting_item_valuation_in_progress
+
 from erpnext.accounts.doctype.pos_invoice.pos_invoice import get_pos_reserved_qty
+from erpnext.stock.utils import (
+	is_reposting_item_valuation_in_progress,
+	update_included_uom_in_report,
+)
+
 
 def execute(filters=None):
 	is_reposting_item_valuation_in_progress()
diff --git a/erpnext/stock/report/stock_qty_vs_serial_no_count/stock_qty_vs_serial_no_count.py b/erpnext/stock/report/stock_qty_vs_serial_no_count/stock_qty_vs_serial_no_count.py
index fa19eeb..5580636 100644
--- a/erpnext/stock/report/stock_qty_vs_serial_no_count/stock_qty_vs_serial_no_count.py
+++ b/erpnext/stock/report/stock_qty_vs_serial_no_count/stock_qty_vs_serial_no_count.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 def execute(filters=None):
 	validate_warehouse(filters)
 	columns = get_columns()
diff --git a/erpnext/stock/report/supplier_wise_sales_analytics/supplier_wise_sales_analytics.py b/erpnext/stock/report/supplier_wise_sales_analytics/supplier_wise_sales_analytics.py
index 4108a57..f15557b 100644
--- a/erpnext/stock/report/supplier_wise_sales_analytics/supplier_wise_sales_analytics.py
+++ b/erpnext/stock/report/supplier_wise_sales_analytics/supplier_wise_sales_analytics.py
@@ -2,11 +2,13 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import flt
 from six import iteritems
 
+
 def execute(filters=None):
 	columns = get_columns(filters)
 	consumed_details = get_consumed_details(filters)
diff --git a/erpnext/stock/report/total_stock_summary/total_stock_summary.py b/erpnext/stock/report/total_stock_summary/total_stock_summary.py
index 59c253c..779b5aa 100644
--- a/erpnext/stock/report/total_stock_summary/total_stock_summary.py
+++ b/erpnext/stock/report/total_stock_summary/total_stock_summary.py
@@ -2,9 +2,11 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 def execute(filters=None):
 	if not filters: filters = {}
 	validate_filters(filters)
diff --git a/erpnext/stock/report/warehouse_wise_item_balance_age_and_value/warehouse_wise_item_balance_age_and_value.py b/erpnext/stock/report/warehouse_wise_item_balance_age_and_value/warehouse_wise_item_balance_age_and_value.py
index 04f7d34..6cb3751 100644
--- a/erpnext/stock/report/warehouse_wise_item_balance_age_and_value/warehouse_wise_item_balance_age_and_value.py
+++ b/erpnext/stock/report/warehouse_wise_item_balance_age_and_value/warehouse_wise_item_balance_age_and_value.py
@@ -5,15 +5,22 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import flt, cint, getdate
-from erpnext.stock.report.stock_balance.stock_balance import (get_item_details,
-	get_item_reorder_details, get_item_warehouse_map, get_items, get_stock_ledger_entries)
-from erpnext.stock.report.stock_ageing.stock_ageing import get_fifo_queue, get_average_age
-from erpnext.stock.utils import is_reposting_item_valuation_in_progress
+from frappe.utils import flt
 from six import iteritems
 
+from erpnext.stock.report.stock_ageing.stock_ageing import get_average_age, get_fifo_queue
+from erpnext.stock.report.stock_balance.stock_balance import (
+	get_item_details,
+	get_item_warehouse_map,
+	get_items,
+	get_stock_ledger_entries,
+)
+from erpnext.stock.utils import is_reposting_item_valuation_in_progress
+
+
 def execute(filters=None):
 	is_reposting_item_valuation_in_progress()
 	if not filters: filters = {}
diff --git a/erpnext/stock/stock_balance.py b/erpnext/stock/stock_balance.py
index e5819d6..1cb0f0d 100644
--- a/erpnext/stock/stock_balance.py
+++ b/erpnext/stock/stock_balance.py
@@ -2,11 +2,13 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import print_function, unicode_literals
+
 import frappe
-from frappe.utils import flt, cstr, nowdate, nowtime
-from erpnext.stock.utils import update_bin
-from erpnext.stock.stock_ledger import update_entries_after
+from frappe.utils import cstr, flt, nowdate, nowtime
+
 from erpnext.controllers.stock_controller import create_repost_item_valuation_entry
+from erpnext.stock.utils import update_bin
+
 
 def repost(only_actual=False, allow_negative_stock=False, allow_zero_rate=False, only_bin=False):
 	"""
diff --git a/erpnext/stock/stock_ledger.py b/erpnext/stock/stock_ledger.py
index 840ca3e..5421242 100644
--- a/erpnext/stock/stock_ledger.py
+++ b/erpnext/stock/stock_ledger.py
@@ -2,17 +2,22 @@
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
 
-import frappe
-import erpnext
 import copy
-from frappe import _
-from frappe.utils import cint, flt, cstr, now, get_link_to_form, getdate
-from frappe.model.meta import get_field_precision
-from erpnext.stock.utils import get_valuation_method, get_incoming_outgoing_rate_for_cancel
-from erpnext.stock.utils import get_bin
 import json
+
+import frappe
+from frappe import _
+from frappe.model.meta import get_field_precision
+from frappe.utils import cint, cstr, flt, get_link_to_form, getdate, now
 from six import iteritems
 
+import erpnext
+from erpnext.stock.utils import (
+	get_bin,
+	get_incoming_outgoing_rate_for_cancel,
+	get_valuation_method,
+)
+
 
 # future reposting
 class NegativeStockError(frappe.ValidationError): pass
@@ -478,7 +483,9 @@
 		# Sales and Purchase Return
 		elif sle.voucher_type in ("Purchase Receipt", "Purchase Invoice", "Delivery Note", "Sales Invoice"):
 			if frappe.get_cached_value(sle.voucher_type, sle.voucher_no, "is_return"):
-				from erpnext.controllers.sales_and_purchase_return import get_rate_for_return # don't move this import to top
+				from erpnext.controllers.sales_and_purchase_return import (
+					get_rate_for_return,  # don't move this import to top
+				)
 				rate = get_rate_for_return(sle.voucher_type, sle.voucher_no, sle.item_code,
 					voucher_detail_no=sle.voucher_detail_no, sle = sle)
 			else:
diff --git a/erpnext/stock/utils.py b/erpnext/stock/utils.py
index 9f6d0a8..aeb06e9 100644
--- a/erpnext/stock/utils.py
+++ b/erpnext/stock/utils.py
@@ -2,13 +2,17 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
-from frappe import _
-import json
-from frappe.utils import flt, cstr, nowdate, nowtime, get_link_to_form
 
+import json
+
+import frappe
+from frappe import _
+from frappe.utils import cstr, flt, get_link_to_form, nowdate, nowtime
 from six import string_types
 
+import erpnext
+
+
 class InvalidWarehouseCompany(frappe.ValidationError): pass
 
 def get_stock_value_from_bin(warehouse=None, item_code=None):
diff --git a/erpnext/support/__init__.py b/erpnext/support/__init__.py
index cc26c14..bd1b3f8 100644
--- a/erpnext/support/__init__.py
+++ b/erpnext/support/__init__.py
@@ -1,4 +1,5 @@
 from __future__ import unicode_literals
+
 install_docs = [
 	{'doctype':'Role', 'role_name':'Support Team', 'name':'Support Team'},
 	{'doctype':'Role', 'role_name':'Maintenance User', 'name':'Maintenance User'},
diff --git a/erpnext/support/doctype/issue/issue.py b/erpnext/support/doctype/issue/issue.py
index f28976e..7d7399d 100644
--- a/erpnext/support/doctype/issue/issue.py
+++ b/erpnext/support/doctype/issue/issue.py
@@ -2,16 +2,19 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import json
-from frappe import _
-from frappe.model.document import Document
-from frappe.utils import now_datetime, time_diff_in_seconds, get_datetime, date_diff
-from frappe.core.utils import get_parent_doc
 from datetime import timedelta
-from frappe.model.mapper import get_mapped_doc
-from frappe.utils.user import is_website_user
+
+import frappe
+from frappe import _
+from frappe.core.utils import get_parent_doc
 from frappe.email.inbox import link_communication_to_document
+from frappe.model.document import Document
+from frappe.model.mapper import get_mapped_doc
+from frappe.utils import date_diff, get_datetime, now_datetime, time_diff_in_seconds
+from frappe.utils.user import is_website_user
+
 
 class Issue(Document):
 	def get_feed(self):
diff --git a/erpnext/support/doctype/issue/test_issue.py b/erpnext/support/doctype/issue/test_issue.py
index 4146e48..229a7a1 100644
--- a/erpnext/support/doctype/issue/test_issue.py
+++ b/erpnext/support/doctype/issue/test_issue.py
@@ -2,13 +2,17 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
-import unittest
-from erpnext.support.doctype.service_level_agreement.test_service_level_agreement import create_service_level_agreements_for_issues
-from frappe.core.doctype.user_permission.test_user_permission import create_user
-from frappe.utils import get_datetime, flt
 import datetime
-from datetime import timedelta
+import unittest
+
+import frappe
+from frappe.core.doctype.user_permission.test_user_permission import create_user
+from frappe.utils import flt, get_datetime
+
+from erpnext.support.doctype.service_level_agreement.test_service_level_agreement import (
+	create_service_level_agreements_for_issues,
+)
+
 
 class TestSetUp(unittest.TestCase):
 	def setUp(self):
diff --git a/erpnext/support/doctype/issue_priority/issue_priority.py b/erpnext/support/doctype/issue_priority/issue_priority.py
index 514b6cc..1a7daf6 100644
--- a/erpnext/support/doctype/issue_priority/issue_priority.py
+++ b/erpnext/support/doctype/issue_priority/issue_priority.py
@@ -3,9 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe import _
+
 from frappe.model.document import Document
 
+
 class IssuePriority(Document):
 	pass
diff --git a/erpnext/support/doctype/issue_priority/test_issue_priority.py b/erpnext/support/doctype/issue_priority/test_issue_priority.py
index 618c93e..fc9ae68 100644
--- a/erpnext/support/doctype/issue_priority/test_issue_priority.py
+++ b/erpnext/support/doctype/issue_priority/test_issue_priority.py
@@ -3,9 +3,11 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
+
 class TestIssuePriority(unittest.TestCase):
 
 	def test_priorities(self):
diff --git a/erpnext/support/doctype/issue_type/issue_type.py b/erpnext/support/doctype/issue_type/issue_type.py
index f95d09c..089ae28 100644
--- a/erpnext/support/doctype/issue_type/issue_type.py
+++ b/erpnext/support/doctype/issue_type/issue_type.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class IssueType(Document):
 	pass
diff --git a/erpnext/support/doctype/issue_type/test_issue_type.py b/erpnext/support/doctype/issue_type/test_issue_type.py
index 4e3b66a..06a2de2 100644
--- a/erpnext/support/doctype/issue_type/test_issue_type.py
+++ b/erpnext/support/doctype/issue_type/test_issue_type.py
@@ -3,8 +3,8 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+
 class TestIssueType(unittest.TestCase):
 	pass
diff --git a/erpnext/support/doctype/pause_sla_on_status/pause_sla_on_status.py b/erpnext/support/doctype/pause_sla_on_status/pause_sla_on_status.py
index a3b547e..37c1f2b 100644
--- a/erpnext/support/doctype/pause_sla_on_status/pause_sla_on_status.py
+++ b/erpnext/support/doctype/pause_sla_on_status/pause_sla_on_status.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class PauseSLAOnStatus(Document):
 	pass
diff --git a/erpnext/support/doctype/service_day/service_day.py b/erpnext/support/doctype/service_day/service_day.py
index 3805b5a..da96cad 100644
--- a/erpnext/support/doctype/service_day/service_day.py
+++ b/erpnext/support/doctype/service_day/service_day.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class ServiceDay(Document):
 	pass
diff --git a/erpnext/support/doctype/service_level_agreement/service_level_agreement.py b/erpnext/support/doctype/service_level_agreement/service_level_agreement.py
index b1d77ce..bd47811 100644
--- a/erpnext/support/doctype/service_level_agreement/service_level_agreement.py
+++ b/erpnext/support/doctype/service_level_agreement/service_level_agreement.py
@@ -4,16 +4,31 @@
 
 from __future__ import unicode_literals
 
+from datetime import datetime
+
 import frappe
-from frappe.model.document import Document
 from frappe import _
 from frappe.core.utils import get_parent_doc
-from frappe.utils import time_diff_in_seconds, getdate, get_weekdays, add_to_date, get_time, get_datetime, \
-	get_time_zone, to_timedelta, get_datetime_str, get_link_to_form, cint, nowdate
-from datetime import datetime
+from frappe.model.document import Document
+from frappe.utils import (
+	add_to_date,
+	cint,
+	get_datetime,
+	get_datetime_str,
+	get_link_to_form,
+	get_time,
+	get_time_zone,
+	get_weekdays,
+	getdate,
+	nowdate,
+	time_diff_in_seconds,
+	to_timedelta,
+)
 from frappe.utils.safe_exec import get_safe_globals
+
 from erpnext.support.doctype.issue.issue import get_holidays
 
+
 class ServiceLevelAgreement(Document):
 	def validate(self):
 		self.validate_doc()
@@ -845,7 +860,7 @@
 
 
 def convert_utc_to_user_timezone(utc_timestamp, user):
-	from pytz import timezone, UnknownTimeZoneError
+	from pytz import UnknownTimeZoneError, timezone
 
 	user_tz = get_tz(user)
 	utcnow = timezone('UTC').localize(utc_timestamp)
diff --git a/erpnext/support/doctype/service_level_agreement/service_level_agreement_dashboard.py b/erpnext/support/doctype/service_level_agreement/service_level_agreement_dashboard.py
index 7e7a405..22e2c37 100644
--- a/erpnext/support/doctype/service_level_agreement/service_level_agreement_dashboard.py
+++ b/erpnext/support/doctype/service_level_agreement/service_level_agreement_dashboard.py
@@ -1,5 +1,6 @@
 from frappe import _
 
+
 def get_data():
 	return {
 		'fieldname': 'service_level_agreement',
diff --git a/erpnext/support/doctype/service_level_agreement/test_service_level_agreement.py b/erpnext/support/doctype/service_level_agreement/test_service_level_agreement.py
index d9c671e..3a92277 100644
--- a/erpnext/support/doctype/service_level_agreement/test_service_level_agreement.py
+++ b/erpnext/support/doctype/service_level_agreement/test_service_level_agreement.py
@@ -3,12 +3,17 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
-import unittest
 import datetime
+import unittest
+
+import frappe
 from frappe.utils import flt
+
 from erpnext.support.doctype.issue_priority.test_issue_priority import make_priorities
-from erpnext.support.doctype.service_level_agreement.service_level_agreement import get_service_level_agreement_fields
+from erpnext.support.doctype.service_level_agreement.service_level_agreement import (
+	get_service_level_agreement_fields,
+)
+
 
 class TestServiceLevelAgreement(unittest.TestCase):
 	def setUp(self):
diff --git a/erpnext/support/doctype/service_level_priority/service_level_priority.py b/erpnext/support/doctype/service_level_priority/service_level_priority.py
index 0c0fe4a..3b2d124 100644
--- a/erpnext/support/doctype/service_level_priority/service_level_priority.py
+++ b/erpnext/support/doctype/service_level_priority/service_level_priority.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class ServiceLevelPriority(Document):
 	pass
diff --git a/erpnext/support/doctype/sla_fulfilled_on_status/sla_fulfilled_on_status.py b/erpnext/support/doctype/sla_fulfilled_on_status/sla_fulfilled_on_status.py
index b0b5ffc..dbffcb8 100644
--- a/erpnext/support/doctype/sla_fulfilled_on_status/sla_fulfilled_on_status.py
+++ b/erpnext/support/doctype/sla_fulfilled_on_status/sla_fulfilled_on_status.py
@@ -4,5 +4,6 @@
 # import frappe
 from frappe.model.document import Document
 
+
 class SLAFulfilledOnStatus(Document):
 	pass
diff --git a/erpnext/support/doctype/support_search_source/support_search_source.py b/erpnext/support/doctype/support_search_source/support_search_source.py
index 93e503a..50f4714 100644
--- a/erpnext/support/doctype/support_search_source/support_search_source.py
+++ b/erpnext/support/doctype/support_search_source/support_search_source.py
@@ -3,7 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 from frappe.model.document import Document
 
+
 class SupportSearchSource(Document):
 	pass
diff --git a/erpnext/support/doctype/support_settings/support_settings.py b/erpnext/support/doctype/support_settings/support_settings.py
index bb3c53a..73aad9d 100644
--- a/erpnext/support/doctype/support_settings/support_settings.py
+++ b/erpnext/support/doctype/support_settings/support_settings.py
@@ -3,8 +3,9 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 from frappe.model.document import Document
 
+
 class SupportSettings(Document):
 	pass
diff --git a/erpnext/support/doctype/support_settings/test_support_settings.py b/erpnext/support/doctype/support_settings/test_support_settings.py
index 9c47f96..e9ec070 100644
--- a/erpnext/support/doctype/support_settings/test_support_settings.py
+++ b/erpnext/support/doctype/support_settings/test_support_settings.py
@@ -5,5 +5,6 @@
 
 import unittest
 
+
 class TestSupportSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/support/doctype/warranty_claim/test_warranty_claim.py b/erpnext/support/doctype/warranty_claim/test_warranty_claim.py
index 909675a..dac8f03 100644
--- a/erpnext/support/doctype/warranty_claim/test_warranty_claim.py
+++ b/erpnext/support/doctype/warranty_claim/test_warranty_claim.py
@@ -2,9 +2,10 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
+import frappe
+
 test_records = frappe.get_test_records('Warranty Claim')
 
 class TestWarrantyClaim(unittest.TestCase):
diff --git a/erpnext/support/doctype/warranty_claim/warranty_claim.py b/erpnext/support/doctype/warranty_claim/warranty_claim.py
index a20e7a8..5fb1124 100644
--- a/erpnext/support/doctype/warranty_claim/warranty_claim.py
+++ b/erpnext/support/doctype/warranty_claim/warranty_claim.py
@@ -3,14 +3,14 @@
 
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe import session, _
-from frappe.utils import today, now_datetime
-
-
+from frappe import _, session
+from frappe.utils import now_datetime
 
 from erpnext.utilities.transaction_base import TransactionBase
 
+
 class WarrantyClaim(TransactionBase):
 	def get_feed(self):
 		return _("{0}: From {1}").format(self.status, self.customer_name)
diff --git a/erpnext/support/report/first_response_time_for_issues/first_response_time_for_issues.py b/erpnext/support/report/first_response_time_for_issues/first_response_time_for_issues.py
index 69bf273..cb7a8a6 100644
--- a/erpnext/support/report/first_response_time_for_issues/first_response_time_for_issues.py
+++ b/erpnext/support/report/first_response_time_for_issues/first_response_time_for_issues.py
@@ -2,8 +2,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
+
 def execute(filters=None):
 	columns = [
 		{
diff --git a/erpnext/support/report/issue_analytics/issue_analytics.py b/erpnext/support/report/issue_analytics/issue_analytics.py
index 54fce0b..ac8bce1 100644
--- a/erpnext/support/report/issue_analytics/issue_analytics.py
+++ b/erpnext/support/report/issue_analytics/issue_analytics.py
@@ -2,13 +2,17 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import json
-from six import iteritems
+
+import frappe
 from frappe import _, scrub
-from frappe.utils import getdate, flt, add_to_date, add_days
+from frappe.utils import add_days, add_to_date, flt, getdate
+from six import iteritems
+
 from erpnext.accounts.utils import get_fiscal_year
 
+
 def execute(filters=None):
 	return IssueAnalytics(filters).run()
 
@@ -103,7 +107,7 @@
 		return period
 
 	def get_period_date_ranges(self):
-		from dateutil.relativedelta import relativedelta, MO
+		from dateutil.relativedelta import MO, relativedelta
 		from_date, to_date = getdate(self.filters.from_date), getdate(self.filters.to_date)
 
 		increment = {
diff --git a/erpnext/support/report/issue_analytics/test_issue_analytics.py b/erpnext/support/report/issue_analytics/test_issue_analytics.py
index a9d961a..1de03ab 100644
--- a/erpnext/support/report/issue_analytics/test_issue_analytics.py
+++ b/erpnext/support/report/issue_analytics/test_issue_analytics.py
@@ -1,11 +1,16 @@
 from __future__ import unicode_literals
+
 import unittest
+
 import frappe
-from frappe.utils import getdate, add_months
-from erpnext.support.report.issue_analytics.issue_analytics import execute
-from erpnext.support.doctype.issue.test_issue import make_issue, create_customer
-from erpnext.support.doctype.service_level_agreement.test_service_level_agreement import create_service_level_agreements_for_issues
 from frappe.desk.form.assign_to import add as add_assignment
+from frappe.utils import add_months, getdate
+
+from erpnext.support.doctype.issue.test_issue import create_customer, make_issue
+from erpnext.support.doctype.service_level_agreement.test_service_level_agreement import (
+	create_service_level_agreements_for_issues,
+)
+from erpnext.support.report.issue_analytics.issue_analytics import execute
 
 months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
 
diff --git a/erpnext/support/report/issue_summary/issue_summary.py b/erpnext/support/report/issue_summary/issue_summary.py
index 7c4af39..0481996 100644
--- a/erpnext/support/report/issue_summary/issue_summary.py
+++ b/erpnext/support/report/issue_summary/issue_summary.py
@@ -2,11 +2,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import json
-from six import iteritems
+
+import frappe
 from frappe import _, scrub
 from frappe.utils import flt
+from six import iteritems
+
 
 def execute(filters=None):
 	return IssueSummary(filters).run()
diff --git a/erpnext/support/report/support_hour_distribution/support_hour_distribution.py b/erpnext/support/report/support_hour_distribution/support_hour_distribution.py
index 08802b4..c0bec3c 100644
--- a/erpnext/support/report/support_hour_distribution/support_hour_distribution.py
+++ b/erpnext/support/report/support_hour_distribution/support_hour_distribution.py
@@ -2,9 +2,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.utils import add_to_date, getdate, get_datetime
+from frappe.utils import add_to_date, get_datetime, getdate
 from six import iteritems
 
 time_slots = {
diff --git a/erpnext/support/web_form/issues/issues.py b/erpnext/support/web_form/issues/issues.py
index 2334f8b..f57de91 100644
--- a/erpnext/support/web_form/issues/issues.py
+++ b/erpnext/support/web_form/issues/issues.py
@@ -1,6 +1,5 @@
 from __future__ import unicode_literals
 
-import frappe
 
 def get_context(context):
 	# do your magic here
diff --git a/erpnext/telephony/doctype/call_log/call_log.py b/erpnext/telephony/doctype/call_log/call_log.py
index 6f8e411..0c1ea16 100644
--- a/erpnext/telephony/doctype/call_log/call_log.py
+++ b/erpnext/telephony/doctype/call_log/call_log.py
@@ -3,14 +3,15 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from frappe.model.document import Document
-from erpnext.crm.doctype.utils import get_scheduled_employees_for_popup, strip_number
 from frappe.contacts.doctype.contact.contact import get_contact_with_phone_number
 from frappe.core.doctype.dynamic_link.dynamic_link import deduplicate_dynamic_links
+from frappe.model.document import Document
 
 from erpnext.crm.doctype.lead.lead import get_lead_with_phone_number
+from erpnext.crm.doctype.utils import get_scheduled_employees_for_popup, strip_number
 
 END_CALL_STATUSES = ['No Answer', 'Completed', 'Busy', 'Failed']
 ONGOING_CALL_STATUSES = ['Ringing', 'In Progress']
diff --git a/erpnext/telephony/doctype/call_log/test_call_log.py b/erpnext/telephony/doctype/call_log/test_call_log.py
index faa6304..f8d458d 100644
--- a/erpnext/telephony/doctype/call_log/test_call_log.py
+++ b/erpnext/telephony/doctype/call_log/test_call_log.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestCallLog(unittest.TestCase):
 	pass
diff --git a/erpnext/telephony/doctype/incoming_call_handling_schedule/incoming_call_handling_schedule.py b/erpnext/telephony/doctype/incoming_call_handling_schedule/incoming_call_handling_schedule.py
index fcf2974..f48c808 100644
--- a/erpnext/telephony/doctype/incoming_call_handling_schedule/incoming_call_handling_schedule.py
+++ b/erpnext/telephony/doctype/incoming_call_handling_schedule/incoming_call_handling_schedule.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class IncomingCallHandlingSchedule(Document):
 	pass
diff --git a/erpnext/telephony/doctype/incoming_call_settings/incoming_call_settings.py b/erpnext/telephony/doctype/incoming_call_settings/incoming_call_settings.py
index 2b2008a..faeff90 100644
--- a/erpnext/telephony/doctype/incoming_call_settings/incoming_call_settings.py
+++ b/erpnext/telephony/doctype/incoming_call_settings/incoming_call_settings.py
@@ -3,11 +3,14 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
-from frappe.model.document import Document
+
 from datetime import datetime
 from typing import Tuple
+
+import frappe
 from frappe import _
+from frappe.model.document import Document
+
 
 class IncomingCallSettings(Document):
 	def validate(self):
diff --git a/erpnext/telephony/doctype/incoming_call_settings/test_incoming_call_settings.py b/erpnext/telephony/doctype/incoming_call_settings/test_incoming_call_settings.py
index c058c11..243e3d9 100644
--- a/erpnext/telephony/doctype/incoming_call_settings/test_incoming_call_settings.py
+++ b/erpnext/telephony/doctype/incoming_call_settings/test_incoming_call_settings.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestIncomingCallSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/telephony/doctype/voice_call_settings/test_voice_call_settings.py b/erpnext/telephony/doctype/voice_call_settings/test_voice_call_settings.py
index 85d6add..810b717 100644
--- a/erpnext/telephony/doctype/voice_call_settings/test_voice_call_settings.py
+++ b/erpnext/telephony/doctype/voice_call_settings/test_voice_call_settings.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestVoiceCallSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/telephony/doctype/voice_call_settings/voice_call_settings.py b/erpnext/telephony/doctype/voice_call_settings/voice_call_settings.py
index ad3bbf1..fc0e338 100644
--- a/erpnext/telephony/doctype/voice_call_settings/voice_call_settings.py
+++ b/erpnext/telephony/doctype/voice_call_settings/voice_call_settings.py
@@ -3,8 +3,10 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 # import frappe
 from frappe.model.document import Document
 
+
 class VoiceCallSettings(Document):
 	pass
diff --git a/erpnext/templates/pages/cart.py b/erpnext/templates/pages/cart.py
index 30b0357..7c441f7 100644
--- a/erpnext/templates/pages/cart.py
+++ b/erpnext/templates/pages/cart.py
@@ -4,8 +4,9 @@
 
 no_cache = 1
 
-import frappe
+
 from erpnext.shopping_cart.cart import get_cart_quotation
 
+
 def get_context(context):
 	context.update(get_cart_quotation())
diff --git a/erpnext/templates/pages/courses.py b/erpnext/templates/pages/courses.py
index 92c38f6..7eb0135 100644
--- a/erpnext/templates/pages/courses.py
+++ b/erpnext/templates/pages/courses.py
@@ -2,8 +2,8 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
+import frappe
 
 
 def get_context(context):
diff --git a/erpnext/templates/pages/help.py b/erpnext/templates/pages/help.py
index 4ce2b31..366b283 100644
--- a/erpnext/templates/pages/help.py
+++ b/erpnext/templates/pages/help.py
@@ -1,8 +1,11 @@
 from __future__ import unicode_literals
-import frappe, json
 
+import json
+
+import frappe
 import requests
 
+
 def get_context(context):
 	context.no_cache = 1
 	settings = frappe.get_doc("Support Settings", "Support Settings")
diff --git a/erpnext/templates/pages/home.py b/erpnext/templates/pages/home.py
index 1c14450..97a66fc 100644
--- a/erpnext/templates/pages/home.py
+++ b/erpnext/templates/pages/home.py
@@ -2,6 +2,7 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
 no_cache = 1
diff --git a/erpnext/templates/pages/integrations/gocardless_checkout.py b/erpnext/templates/pages/integrations/gocardless_checkout.py
index bdef79c..2661a96 100644
--- a/erpnext/templates/pages/integrations/gocardless_checkout.py
+++ b/erpnext/templates/pages/integrations/gocardless_checkout.py
@@ -1,12 +1,17 @@
 # Copyright (c) 2018, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
+
+import json
+
 import frappe
 from frappe import _
-from frappe.utils import flt
-import json
-from erpnext.erpnext_integrations.doctype.gocardless_settings.gocardless_settings import gocardless_initialization, get_gateway_controller
-from frappe.utils import get_url
+from frappe.utils import flt, get_url
+
+from erpnext.erpnext_integrations.doctype.gocardless_settings.gocardless_settings import (
+	get_gateway_controller,
+	gocardless_initialization,
+)
 
 no_cache = 1
 
diff --git a/erpnext/templates/pages/integrations/gocardless_confirmation.py b/erpnext/templates/pages/integrations/gocardless_confirmation.py
index 0b72e9f..35c8b90 100644
--- a/erpnext/templates/pages/integrations/gocardless_confirmation.py
+++ b/erpnext/templates/pages/integrations/gocardless_confirmation.py
@@ -1,9 +1,14 @@
 # Copyright (c) 2018, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-from erpnext.erpnext_integrations.doctype.gocardless_settings.gocardless_settings import gocardless_initialization, get_gateway_controller
+
+from erpnext.erpnext_integrations.doctype.gocardless_settings.gocardless_settings import (
+	get_gateway_controller,
+	gocardless_initialization,
+)
 
 no_cache = 1
 
diff --git a/erpnext/templates/pages/material_request_info.py b/erpnext/templates/pages/material_request_info.py
index e29860d..c18e201 100644
--- a/erpnext/templates/pages/material_request_info.py
+++ b/erpnext/templates/pages/material_request_info.py
@@ -2,11 +2,12 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
-
 from frappe.utils import flt
 
+
 def get_context(context):
 	context.no_cache = 1
 	context.show_sidebar = True
diff --git a/erpnext/templates/pages/non_profit/join_chapter.py b/erpnext/templates/pages/non_profit/join_chapter.py
index aa54a58..a1d1893 100644
--- a/erpnext/templates/pages/non_profit/join_chapter.py
+++ b/erpnext/templates/pages/non_profit/join_chapter.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def get_context(context):
 	context.no_cache = True
 	chapter = frappe.get_doc('Chapter', frappe.form_dict.name)
diff --git a/erpnext/templates/pages/non_profit/leave_chapter.py b/erpnext/templates/pages/non_profit/leave_chapter.py
index 21cb722..ebdb664 100644
--- a/erpnext/templates/pages/non_profit/leave_chapter.py
+++ b/erpnext/templates/pages/non_profit/leave_chapter.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def get_context(context):
 	context.no_cache = True
 	chapter = frappe.get_doc('Chapter', frappe.form_dict.name)
diff --git a/erpnext/templates/pages/order.py b/erpnext/templates/pages/order.py
index 816a259..d4e81ab 100644
--- a/erpnext/templates/pages/order.py
+++ b/erpnext/templates/pages/order.py
@@ -2,10 +2,14 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
+import frappe
 from frappe import _
-from erpnext.shopping_cart.doctype.shopping_cart_settings.shopping_cart_settings import show_attachments
+
+from erpnext.shopping_cart.doctype.shopping_cart_settings.shopping_cart_settings import (
+	show_attachments,
+)
+
 
 def get_context(context):
 	context.no_cache = 1
@@ -36,7 +40,9 @@
 	# check for the loyalty program of the customer
 	customer_loyalty_program = frappe.db.get_value("Customer", context.doc.customer, "loyalty_program")
 	if customer_loyalty_program:
-		from erpnext.accounts.doctype.loyalty_program.loyalty_program import get_loyalty_program_details_with_points
+		from erpnext.accounts.doctype.loyalty_program.loyalty_program import (
+			get_loyalty_program_details_with_points,
+		)
 		loyalty_program_details = get_loyalty_program_details_with_points(context.doc.customer, customer_loyalty_program)
 		context.available_loyalty_points = int(loyalty_program_details.get("loyalty_points"))
 
diff --git a/erpnext/templates/pages/partners.py b/erpnext/templates/pages/partners.py
index a7e60e2..b1c668a 100644
--- a/erpnext/templates/pages/partners.py
+++ b/erpnext/templates/pages/partners.py
@@ -2,6 +2,7 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 
 page_title = "Partners"
diff --git a/erpnext/templates/pages/product_search.py b/erpnext/templates/pages/product_search.py
index 9ab76de..1b9df2b 100644
--- a/erpnext/templates/pages/product_search.py
+++ b/erpnext/templates/pages/product_search.py
@@ -2,8 +2,10 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-from frappe.utils import cstr, nowdate, cint
+from frappe.utils import cint, cstr, nowdate
+
 from erpnext.setup.doctype.item_group.item_group import get_item_for_list_in_html
 from erpnext.shopping_cart.product_info import set_product_info_for_website
 
diff --git a/erpnext/templates/pages/projects.py b/erpnext/templates/pages/projects.py
index 7ff4954..cabf37b 100644
--- a/erpnext/templates/pages/projects.py
+++ b/erpnext/templates/pages/projects.py
@@ -2,8 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
-import json
+
 
 def get_context(context):
 	project_user = frappe.db.get_value("Project User", {"parent": frappe.form_dict.project, "user": frappe.session.user} , ["user", "view_attachments"], as_dict= True)
diff --git a/erpnext/templates/pages/regional/india/update_gstin.py b/erpnext/templates/pages/regional/india/update_gstin.py
index f555db0..a8d03d5 100644
--- a/erpnext/templates/pages/regional/india/update_gstin.py
+++ b/erpnext/templates/pages/regional/india/update_gstin.py
@@ -1,8 +1,9 @@
 from __future__ import unicode_literals
+
 import frappe
-from frappe import _
 from six import iteritems
 
+
 def get_context(context):
 	context.no_cache = 1
 	party = frappe.form_dict.party
diff --git a/erpnext/templates/pages/rfq.py b/erpnext/templates/pages/rfq.py
index 67679a1..b9f646b 100644
--- a/erpnext/templates/pages/rfq.py
+++ b/erpnext/templates/pages/rfq.py
@@ -2,11 +2,14 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import formatdate
+
 from erpnext.controllers.website_list_for_contact import get_customers_suppliers
 
+
 def get_context(context):
 	context.no_cache = 1
 	context.show_sidebar = True
diff --git a/erpnext/templates/pages/search_help.py b/erpnext/templates/pages/search_help.py
index 887d8f4..4272b94 100644
--- a/erpnext/templates/pages/search_help.py
+++ b/erpnext/templates/pages/search_help.py
@@ -1,11 +1,14 @@
 from __future__ import unicode_literals
-import frappe, requests
+
+import frappe
+import requests
 from frappe import _
-from jinja2 import utils
-from html2text import html2text
-from six import text_type
 from frappe.utils import sanitize_html
 from frappe.utils.global_search import search
+from html2text import html2text
+from jinja2 import utils
+from six import text_type
+
 
 def get_context(context):
 	context.no_cache = 1
diff --git a/erpnext/templates/pages/task_info.py b/erpnext/templates/pages/task_info.py
index 260e278..f219c3d 100644
--- a/erpnext/templates/pages/task_info.py
+++ b/erpnext/templates/pages/task_info.py
@@ -1,7 +1,7 @@
 from __future__ import unicode_literals
+
 import frappe
 
-from frappe import _
 
 def get_context(context):
 	context.no_cache = 1
diff --git a/erpnext/templates/pages/timelog_info.py b/erpnext/templates/pages/timelog_info.py
index ee86483..e0fb60d 100644
--- a/erpnext/templates/pages/timelog_info.py
+++ b/erpnext/templates/pages/timelog_info.py
@@ -1,7 +1,7 @@
 from __future__ import unicode_literals
+
 import frappe
 
-from frappe import _
 
 def get_context(context):
 	context.no_cache = 1
diff --git a/erpnext/tests/test_init.py b/erpnext/tests/test_init.py
index abc04a8..dfba034 100644
--- a/erpnext/tests/test_init.py
+++ b/erpnext/tests/test_init.py
@@ -1,10 +1,12 @@
 from __future__ import unicode_literals
+
 import unittest
 
 import frappe
-from erpnext import encode_company_abbr
 from six.moves import range
 
+from erpnext import encode_company_abbr
+
 test_records = frappe.get_test_records('Company')
 
 class TestInit(unittest.TestCase):
diff --git a/erpnext/tests/test_notifications.py b/erpnext/tests/test_notifications.py
index 1fd90be..5fd9582 100644
--- a/erpnext/tests/test_notifications.py
+++ b/erpnext/tests/test_notifications.py
@@ -2,11 +2,12 @@
 # MIT License. See license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import unittest
 
+import frappe
 from frappe.desk import notifications
-from frappe.test_runner import make_test_objects
+
 
 class TestNotifications(unittest.TestCase):
 	def test_get_notifications_for_targets(self):
diff --git a/erpnext/tests/test_regional.py b/erpnext/tests/test_regional.py
index 5b3f45a..fe848a3 100644
--- a/erpnext/tests/test_regional.py
+++ b/erpnext/tests/test_regional.py
@@ -1,5 +1,11 @@
 from __future__ import unicode_literals
-import unittest, frappe, erpnext
+
+import unittest
+
+import frappe
+
+import erpnext
+
 
 @erpnext.allow_regional
 def test_method():
diff --git a/erpnext/tests/test_search.py b/erpnext/tests/test_search.py
index f60e5e4..a6619b2 100644
--- a/erpnext/tests/test_search.py
+++ b/erpnext/tests/test_search.py
@@ -1,8 +1,11 @@
 from __future__ import unicode_literals
+
 import unittest
+
 import frappe
 from frappe.contacts.address_and_contact import filter_dynamic_link_doctypes
 
+
 class TestSearch(unittest.TestCase):
 	# Search for the word "cond", part of the word "conduire" (Lead) in french.
 	def test_contact_search_in_foreign_language(self):
diff --git a/erpnext/tests/test_subcontracting.py b/erpnext/tests/test_subcontracting.py
index f55137b..e45f098 100644
--- a/erpnext/tests/test_subcontracting.py
+++ b/erpnext/tests/test_subcontracting.py
@@ -1,16 +1,24 @@
 from __future__ import unicode_literals
-import frappe
-import unittest
+
 import copy
-from frappe.utils import cint
+import unittest
 from collections import defaultdict
-from erpnext.stock.doctype.stock_entry.test_stock_entry import make_stock_entry
-from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
-from erpnext.stock.doctype.item.test_item import make_item
-from erpnext.manufacturing.doctype.production_plan.test_production_plan import make_bom
+
+import frappe
+from frappe.utils import cint
+
+from erpnext.buying.doctype.purchase_order.purchase_order import (
+	get_materials_from_supplier,
+	make_purchase_invoice,
+	make_purchase_receipt,
+	make_rm_stock_entry,
+)
 from erpnext.buying.doctype.purchase_order.test_purchase_order import create_purchase_order
-from erpnext.buying.doctype.purchase_order.purchase_order import (make_rm_stock_entry,
-	make_purchase_receipt, make_purchase_invoice, get_materials_from_supplier)
+from erpnext.manufacturing.doctype.production_plan.test_production_plan import make_bom
+from erpnext.stock.doctype.item.test_item import make_item
+from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
+from erpnext.stock.doctype.stock_entry.test_stock_entry import make_stock_entry
+
 
 class TestSubcontracting(unittest.TestCase):
 	def setUp(self):
diff --git a/erpnext/tests/test_woocommerce.py b/erpnext/tests/test_woocommerce.py
index df715ab..881f286 100644
--- a/erpnext/tests/test_woocommerce.py
+++ b/erpnext/tests/test_woocommerce.py
@@ -1,7 +1,15 @@
 from __future__ import unicode_literals
-import unittest, frappe, requests, os, time, erpnext
+
+import os
+import time
+import unittest
+
+import frappe
+import requests
+
 from erpnext.erpnext_integrations.connectors.woocommerce_connection import order
 
+
 class TestWoocommerce(unittest.TestCase):
 	def setUp(self):
 		if not frappe.db.exists('Company', 'Woocommerce'):
diff --git a/erpnext/tests/ui_test_helpers.py b/erpnext/tests/ui_test_helpers.py
index 902fd64..76c7608 100644
--- a/erpnext/tests/ui_test_helpers.py
+++ b/erpnext/tests/ui_test_helpers.py
@@ -1,6 +1,7 @@
 import frappe
 from frappe.utils import getdate
 
+
 @frappe.whitelist()
 def create_employee_records():
 	create_company()
diff --git a/erpnext/tests/utils.py b/erpnext/tests/utils.py
index 11eb6af..2156bd5 100644
--- a/erpnext/tests/utils.py
+++ b/erpnext/tests/utils.py
@@ -6,6 +6,7 @@
 
 import frappe
 
+
 def create_test_contact_and_address():
 	frappe.db.sql('delete from tabContact')
 	frappe.db.sql('delete from `tabContact Email`')
diff --git a/erpnext/utilities/__init__.py b/erpnext/utilities/__init__.py
index 0a5aa3c..ca8bc19 100644
--- a/erpnext/utilities/__init__.py
+++ b/erpnext/utilities/__init__.py
@@ -1,9 +1,12 @@
 ## temp utility
 from __future__ import print_function, unicode_literals
+
 import frappe
-from erpnext.utilities.activation import get_level
 from frappe.utils import cstr
 
+from erpnext.utilities.activation import get_level
+
+
 def update_doctypes():
 	for d in frappe.db.sql("""select df.parent, df.fieldname
 		from tabDocField df, tabDocType dt where df.fieldname
diff --git a/erpnext/utilities/activation.py b/erpnext/utilities/activation.py
index 0f9f2f8..c21bff0 100644
--- a/erpnext/utilities/activation.py
+++ b/erpnext/utilities/activation.py
@@ -2,11 +2,14 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe, erpnext
 
+import frappe
 from frappe import _
 from six import iteritems
 
+import erpnext
+
+
 def get_level():
 	activation_level = 0
 	sales_data = []
diff --git a/erpnext/utilities/bot.py b/erpnext/utilities/bot.py
index 485b0b3..9e830a2 100644
--- a/erpnext/utilities/bot.py
+++ b/erpnext/utilities/bot.py
@@ -3,10 +3,10 @@
 
 from __future__ import unicode_literals
 
-from frappe.utils.bot import BotParser
-
 import frappe
 from frappe import _
+from frappe.utils.bot import BotParser
+
 
 class FindItemBot(BotParser):
 	def get_reply(self):
diff --git a/erpnext/utilities/doctype/rename_tool/rename_tool.py b/erpnext/utilities/doctype/rename_tool/rename_tool.py
index 5e3ac1a..8377cec 100644
--- a/erpnext/utilities/doctype/rename_tool/rename_tool.py
+++ b/erpnext/utilities/doctype/rename_tool/rename_tool.py
@@ -4,11 +4,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
 
+import frappe
 from frappe.model.document import Document
 from frappe.model.rename_doc import bulk_rename
 
+
 class RenameTool(Document):
 	pass
 
diff --git a/erpnext/utilities/doctype/sms_log/sms_log.py b/erpnext/utilities/doctype/sms_log/sms_log.py
index e634f80..ce3cc46 100644
--- a/erpnext/utilities/doctype/sms_log/sms_log.py
+++ b/erpnext/utilities/doctype/sms_log/sms_log.py
@@ -2,9 +2,9 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import frappe
 
 from frappe.model.document import Document
 
+
 class SMSLog(Document):
 	pass
diff --git a/erpnext/utilities/doctype/sms_log/test_sms_log.py b/erpnext/utilities/doctype/sms_log/test_sms_log.py
index 65f52b4..3baeb25 100644
--- a/erpnext/utilities/doctype/sms_log/test_sms_log.py
+++ b/erpnext/utilities/doctype/sms_log/test_sms_log.py
@@ -3,7 +3,6 @@
 # See license.txt
 from __future__ import unicode_literals
 
-import frappe
 import unittest
 
 # test_records = frappe.get_test_records('SMS Log')
diff --git a/erpnext/utilities/doctype/video/test_video.py b/erpnext/utilities/doctype/video/test_video.py
index 33ea31c..530136c 100644
--- a/erpnext/utilities/doctype/video/test_video.py
+++ b/erpnext/utilities/doctype/video/test_video.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestVideo(unittest.TestCase):
 	pass
diff --git a/erpnext/utilities/doctype/video/video.py b/erpnext/utilities/doctype/video/video.py
index c2e414e..d9907cf 100644
--- a/erpnext/utilities/doctype/video/video.py
+++ b/erpnext/utilities/doctype/video/video.py
@@ -3,14 +3,17 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
-import frappe
+
 import re
-import pytz
-from frappe.model.document import Document
-from frappe import _
 from datetime import datetime
-from six import string_types
+
+import frappe
+import pytz
+from frappe import _
+from frappe.model.document import Document
 from pyyoutube import Api
+from six import string_types
+
 
 class Video(Document):
 	def validate(self):
diff --git a/erpnext/utilities/doctype/video_settings/test_video_settings.py b/erpnext/utilities/doctype/video_settings/test_video_settings.py
index b217afe..e871435 100644
--- a/erpnext/utilities/doctype/video_settings/test_video_settings.py
+++ b/erpnext/utilities/doctype/video_settings/test_video_settings.py
@@ -6,5 +6,6 @@
 # import frappe
 import unittest
 
+
 class TestVideoSettings(unittest.TestCase):
 	pass
diff --git a/erpnext/utilities/doctype/video_settings/video_settings.py b/erpnext/utilities/doctype/video_settings/video_settings.py
index db021b4..7209134 100644
--- a/erpnext/utilities/doctype/video_settings/video_settings.py
+++ b/erpnext/utilities/doctype/video_settings/video_settings.py
@@ -3,10 +3,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
+from apiclient.discovery import build
 from frappe import _
 from frappe.model.document import Document
-from apiclient.discovery import build
+
 
 class VideoSettings(Document):
 	def validate(self):
diff --git a/erpnext/utilities/hierarchy_chart.py b/erpnext/utilities/hierarchy_chart.py
index cc506e5..0e7f81f 100644
--- a/erpnext/utilities/hierarchy_chart.py
+++ b/erpnext/utilities/hierarchy_chart.py
@@ -2,9 +2,11 @@
 # MIT License. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 
+
 @frappe.whitelist()
 def get_all_nodes(method, company):
 	'''Recursively gets all data from nodes'''
diff --git a/erpnext/utilities/product.py b/erpnext/utilities/product.py
index f6c53ca..e567f77 100644
--- a/erpnext/utilities/product.py
+++ b/erpnext/utilities/product.py
@@ -4,10 +4,12 @@
 from __future__ import unicode_literals
 
 import frappe
-from frappe.utils import cint, fmt_money, flt, nowdate, getdate
+from frappe.utils import cint, flt, fmt_money, getdate, nowdate
+
 from erpnext.accounts.doctype.pricing_rule.pricing_rule import get_pricing_rule_for_item
 from erpnext.stock.doctype.batch.batch import get_batch_qty
 
+
 def get_qty_in_stock(item_code, item_warehouse_field, warehouse=None):
 	in_stock, stock_qty = 0, ''
 	template_item_code, is_stock_item = frappe.db.get_value("Item", item_code, ["variant_of", "is_stock_item"])
diff --git a/erpnext/utilities/report/youtube_interactions/youtube_interactions.py b/erpnext/utilities/report/youtube_interactions/youtube_interactions.py
index 29a489d..50f3b68 100644
--- a/erpnext/utilities/report/youtube_interactions/youtube_interactions.py
+++ b/erpnext/utilities/report/youtube_interactions/youtube_interactions.py
@@ -2,10 +2,12 @@
 # For license information, please see license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils import flt
 
+
 def execute(filters=None):
 	if not frappe.db.get_single_value("Video Settings", "enable_youtube_tracking") or not filters:
 		return [], []
diff --git a/erpnext/utilities/transaction_base.py b/erpnext/utilities/transaction_base.py
index db99726..5153683 100644
--- a/erpnext/utilities/transaction_base.py
+++ b/erpnext/utilities/transaction_base.py
@@ -2,13 +2,15 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
+
 import frappe
 import frappe.share
 from frappe import _
-from frappe.utils import cstr, now_datetime, cint, flt, get_time, get_datetime, get_link_to_form, date_diff, nowdate
+from frappe.utils import cint, cstr, flt, get_time, now_datetime
+from six import string_types
+
 from erpnext.controllers.status_updater import StatusUpdater
 
-from six import string_types
 
 class UOMMustBeIntegerError(frappe.ValidationError): pass
 
diff --git a/erpnext/utilities/web_form/addresses/addresses.py b/erpnext/utilities/web_form/addresses/addresses.py
index 3fd1017..4a8d3e1 100644
--- a/erpnext/utilities/web_form/addresses/addresses.py
+++ b/erpnext/utilities/web_form/addresses/addresses.py
@@ -1,6 +1,5 @@
 from __future__ import unicode_literals
 
-import frappe
 
 def get_context(context):
 	# do your magic here
diff --git a/erpnext/www/all-products/index.py b/erpnext/www/all-products/index.py
index fd6400f..335c104 100644
--- a/erpnext/www/all-products/index.py
+++ b/erpnext/www/all-products/index.py
@@ -1,8 +1,8 @@
 import frappe
-from erpnext.portal.product_configurator.utils import (get_products_for_website, get_product_settings,
-	get_field_filter_data, get_attribute_filter_data)
-from erpnext.shopping_cart.product_query import ProductQuery
+
+from erpnext.portal.product_configurator.utils import get_product_settings
 from erpnext.shopping_cart.filters import ProductFiltersBuilder
+from erpnext.shopping_cart.product_query import ProductQuery
 
 sitemap = 1
 
diff --git a/erpnext/www/book_appointment/index.py b/erpnext/www/book_appointment/index.py
index 4f45561..8cda3c1 100644
--- a/erpnext/www/book_appointment/index.py
+++ b/erpnext/www/book_appointment/index.py
@@ -1,6 +1,7 @@
-import frappe
 import datetime
 import json
+
+import frappe
 import pytz
 from frappe import _
 
diff --git a/erpnext/www/book_appointment/verify/index.py b/erpnext/www/book_appointment/verify/index.py
index bd766c0..dc36f4f 100644
--- a/erpnext/www/book_appointment/verify/index.py
+++ b/erpnext/www/book_appointment/verify/index.py
@@ -1,6 +1,7 @@
 import frappe
-
 from frappe.utils.verified_command import verify_request
+
+
 @frappe.whitelist(allow_guest=True)
 def get_context(context):
 	if not verify_request():
diff --git a/erpnext/www/lms/content.py b/erpnext/www/lms/content.py
index 05cbb16..97f5918 100644
--- a/erpnext/www/lms/content.py
+++ b/erpnext/www/lms/content.py
@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
-import erpnext.education.utils as utils
+
 import frappe
 
+import erpnext.education.utils as utils
+
 no_cache = 1
 
 def get_context(context):
diff --git a/erpnext/www/lms/course.py b/erpnext/www/lms/course.py
index c18d64e..1ec097b 100644
--- a/erpnext/www/lms/course.py
+++ b/erpnext/www/lms/course.py
@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
-import erpnext.education.utils as utils
+
 import frappe
 
+import erpnext.education.utils as utils
+
 no_cache = 1
 
 def get_context(context):
diff --git a/erpnext/www/lms/index.py b/erpnext/www/lms/index.py
index c14b943..c35fff2 100644
--- a/erpnext/www/lms/index.py
+++ b/erpnext/www/lms/index.py
@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
-import erpnext.education.utils as utils
+
 import frappe
 
+import erpnext.education.utils as utils
+
 no_cache = 1
 
 def get_context(context):
diff --git a/erpnext/www/lms/profile.py b/erpnext/www/lms/profile.py
index 7e338e3..d5dcd2b 100644
--- a/erpnext/www/lms/profile.py
+++ b/erpnext/www/lms/profile.py
@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
-import erpnext.education.utils as utils
+
 import frappe
 
+import erpnext.education.utils as utils
+
 no_cache = 1
 
 def get_context(context):
diff --git a/erpnext/www/lms/program.py b/erpnext/www/lms/program.py
index a4f588c..9980d88 100644
--- a/erpnext/www/lms/program.py
+++ b/erpnext/www/lms/program.py
@@ -1,8 +1,10 @@
 from __future__ import unicode_literals
-import erpnext.education.utils as utils
+
 import frappe
 from frappe import _
 
+import erpnext.education.utils as utils
+
 no_cache = 1
 
 def get_context(context):
diff --git a/erpnext/www/lms/topic.py b/erpnext/www/lms/topic.py
index 9938280..ebedaf5 100644
--- a/erpnext/www/lms/topic.py
+++ b/erpnext/www/lms/topic.py
@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
-import erpnext.education.utils as utils
+
 import frappe
 
+import erpnext.education.utils as utils
+
 no_cache = 1
 
 def get_context(context):
diff --git a/erpnext/www/payment_setup_certification.py b/erpnext/www/payment_setup_certification.py
index 6b02e4e..e509083 100644
--- a/erpnext/www/payment_setup_certification.py
+++ b/erpnext/www/payment_setup_certification.py
@@ -1,4 +1,5 @@
 from __future__ import unicode_literals
+
 import frappe
 
 no_cache = 1
diff --git a/erpnext/www/support/index.py b/erpnext/www/support/index.py
index 70090c7..4857b0d 100644
--- a/erpnext/www/support/index.py
+++ b/erpnext/www/support/index.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 import frappe
 
+
 def get_context(context):
 	context.no_cache = 1
 	context.align_greeting = ''
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..8043dd9
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,11 @@
+[tool.black]
+line-length = 99
+
+[tool.isort]
+line_length = 99
+multi_line_output = 3
+include_trailing_comma = true
+force_grid_wrap = 0
+use_parentheses = true
+ensure_newline_before_comments = true
+indent = "\t"