style: format code with black
diff --git a/erpnext/erpnext_integrations/taxjar_integration.py b/erpnext/erpnext_integrations/taxjar_integration.py
index 14c86d5..b8893aa 100644
--- a/erpnext/erpnext_integrations/taxjar_integration.py
+++ b/erpnext/erpnext_integrations/taxjar_integration.py
@@ -8,14 +8,92 @@
 
 from erpnext import get_default_company, get_region
 
-SUPPORTED_COUNTRY_CODES = ["AT", "AU", "BE", "BG", "CA", "CY", "CZ", "DE", "DK", "EE", "ES", "FI",
-	"FR", "GB", "GR", "HR", "HU", "IE", "IT", "LT", "LU", "LV", "MT", "NL", "PL", "PT", "RO",
-	"SE", "SI", "SK", "US"]
-SUPPORTED_STATE_CODES = ['AL', 'AK', 'AZ', 'AR', 'CA', 'CO', 'CT', 'DE', 'DC', 'FL', 'GA', 'HI', 'ID', 'IL',
-	'IN', 'IA', 'KS', 'KY', 'LA', 'ME', 'MD', 'MA', 'MI', 'MN', 'MS', 'MO', 'MT', 'NE',
-	'NV', 'NH', 'NJ', 'NM', 'NY', 'NC', 'ND', 'OH', 'OK', 'OR', 'PA', 'RI', 'SC', 'SD',
-	'TN', 'TX', 'UT', 'VT', 'VA', 'WA', 'WV', 'WI', 'WY']
-
+SUPPORTED_COUNTRY_CODES = [
+	"AT",
+	"AU",
+	"BE",
+	"BG",
+	"CA",
+	"CY",
+	"CZ",
+	"DE",
+	"DK",
+	"EE",
+	"ES",
+	"FI",
+	"FR",
+	"GB",
+	"GR",
+	"HR",
+	"HU",
+	"IE",
+	"IT",
+	"LT",
+	"LU",
+	"LV",
+	"MT",
+	"NL",
+	"PL",
+	"PT",
+	"RO",
+	"SE",
+	"SI",
+	"SK",
+	"US",
+]
+SUPPORTED_STATE_CODES = [
+	"AL",
+	"AK",
+	"AZ",
+	"AR",
+	"CA",
+	"CO",
+	"CT",
+	"DE",
+	"DC",
+	"FL",
+	"GA",
+	"HI",
+	"ID",
+	"IL",
+	"IN",
+	"IA",
+	"KS",
+	"KY",
+	"LA",
+	"ME",
+	"MD",
+	"MA",
+	"MI",
+	"MN",
+	"MS",
+	"MO",
+	"MT",
+	"NE",
+	"NV",
+	"NH",
+	"NJ",
+	"NM",
+	"NY",
+	"NC",
+	"ND",
+	"OH",
+	"OK",
+	"OR",
+	"PA",
+	"RI",
+	"SC",
+	"SD",
+	"TN",
+	"TX",
+	"UT",
+	"VT",
+	"VA",
+	"WA",
+	"WV",
+	"WI",
+	"WY",
+]
 
 
 def get_client():
@@ -30,14 +108,14 @@
 
 	if api_key and api_url:
 		client = taxjar.Client(api_key=api_key, api_url=api_url)
-		client.set_api_config('headers', {
-				'x-api-version': '2022-01-24'
-			})
+		client.set_api_config("headers", {"x-api-version": "2022-01-24"})
 		return client
 
 
 def create_transaction(doc, method):
-	TAXJAR_CREATE_TRANSACTIONS = frappe.db.get_single_value("TaxJar Settings", "taxjar_create_transactions")
+	TAXJAR_CREATE_TRANSACTIONS = frappe.db.get_single_value(
+		"TaxJar Settings", "taxjar_create_transactions"
+	)
 
 	"""Create an order transaction in TaxJar"""
 
@@ -60,10 +138,10 @@
 	if not tax_dict:
 		return
 
-	tax_dict['transaction_id'] = doc.name
-	tax_dict['transaction_date'] = frappe.utils.today()
-	tax_dict['sales_tax'] = sales_tax
-	tax_dict['amount'] = doc.total + tax_dict['shipping']
+	tax_dict["transaction_id"] = doc.name
+	tax_dict["transaction_date"] = frappe.utils.today()
+	tax_dict["sales_tax"] = sales_tax
+	tax_dict["amount"] = doc.total + tax_dict["shipping"]
 
 	try:
 		if doc.is_return:
@@ -78,7 +156,9 @@
 
 def delete_transaction(doc, method):
 	"""Delete an existing TaxJar order transaction"""
-	TAXJAR_CREATE_TRANSACTIONS = frappe.db.get_single_value("TaxJar Settings", "taxjar_create_transactions")
+	TAXJAR_CREATE_TRANSACTIONS = frappe.db.get_single_value(
+		"TaxJar Settings", "taxjar_create_transactions"
+	)
 
 	if not TAXJAR_CREATE_TRANSACTIONS:
 		return
@@ -109,10 +189,10 @@
 	line_items = [get_line_item_dict(item, doc.docstatus) for item in doc.items]
 
 	if from_shipping_state not in SUPPORTED_STATE_CODES:
-		from_shipping_state = get_state_code(from_address, 'Company')
+		from_shipping_state = get_state_code(from_address, "Company")
 
 	if to_shipping_state not in SUPPORTED_STATE_CODES:
-		to_shipping_state = get_state_code(to_address, 'Shipping')
+		to_shipping_state = get_state_code(to_address, "Shipping")
 
 	tax_dict = {
 		"from_country": from_country_code,
@@ -128,10 +208,11 @@
 		"shipping": shipping,
 		"amount": doc.net_total,
 		"plugin": "erpnext",
-		"line_items": line_items
+		"line_items": line_items,
 	}
 	return tax_dict
 
+
 def get_state_code(address, location):
 	if address is not None:
 		state_code = get_iso_3166_2_state_code(address)
@@ -142,21 +223,21 @@
 
 	return state_code
 
+
 def get_line_item_dict(item, docstatus):
 	tax_dict = dict(
-		id = item.get('idx'),
-		quantity = item.get('qty'),
-		unit_price = item.get('rate'),
-		product_tax_code = item.get('product_tax_category')
+		id=item.get("idx"),
+		quantity=item.get("qty"),
+		unit_price=item.get("rate"),
+		product_tax_code=item.get("product_tax_category"),
 	)
 
 	if docstatus == 1:
-		tax_dict.update({
-			'sales_tax':item.get('tax_collectable')
-		})
+		tax_dict.update({"sales_tax": item.get("tax_collectable")})
 
 	return tax_dict
 
+
 def set_sales_tax(doc, method):
 	TAX_ACCOUNT_HEAD = frappe.db.get_single_value("TaxJar Settings", "tax_account_head")
 	TAXJAR_CALCULATE_TAX = frappe.db.get_single_value("TaxJar Settings", "taxjar_calculate_tax")
@@ -164,7 +245,7 @@
 	if not TAXJAR_CALCULATE_TAX:
 		return
 
-	if get_region(doc.company) != 'United States':
+	if get_region(doc.company) != "United States":
 		return
 
 	if not doc.items:
@@ -197,22 +278,26 @@
 					doc.run_method("calculate_taxes_and_totals")
 					break
 			else:
-				doc.append("taxes", {
-					"charge_type": "Actual",
-					"description": "Sales Tax",
-					"account_head": TAX_ACCOUNT_HEAD,
-					"tax_amount": tax_data.amount_to_collect
-				})
+				doc.append(
+					"taxes",
+					{
+						"charge_type": "Actual",
+						"description": "Sales Tax",
+						"account_head": TAX_ACCOUNT_HEAD,
+						"tax_amount": tax_data.amount_to_collect,
+					},
+				)
 			# Assigning values to tax_collectable and taxable_amount fields in sales item table
 			for item in tax_data.breakdown.line_items:
-				doc.get('items')[cint(item.id)-1].tax_collectable = item.tax_collectable
-				doc.get('items')[cint(item.id)-1].taxable_amount = item.taxable_amount
+				doc.get("items")[cint(item.id) - 1].tax_collectable = item.tax_collectable
+				doc.get("items")[cint(item.id) - 1].taxable_amount = item.taxable_amount
 
 			doc.run_method("calculate_taxes_and_totals")
 
+
 def check_for_nexus(doc, tax_dict):
 	TAX_ACCOUNT_HEAD = frappe.db.get_single_value("TaxJar Settings", "tax_account_head")
-	if not frappe.db.get_value('TaxJar Nexus', {'region_code': tax_dict["to_state"]}):
+	if not frappe.db.get_value("TaxJar Nexus", {"region_code": tax_dict["to_state"]}):
 		for item in doc.get("items"):
 			item.tax_collectable = flt(0)
 			item.taxable_amount = flt(0)
@@ -222,13 +307,17 @@
 				doc.taxes.remove(tax)
 		return
 
+
 def check_sales_tax_exemption(doc):
 	# if the party is exempt from sales tax, then set all tax account heads to zero
 	TAX_ACCOUNT_HEAD = frappe.db.get_single_value("TaxJar Settings", "tax_account_head")
 
-	sales_tax_exempted = hasattr(doc, "exempt_from_sales_tax") and doc.exempt_from_sales_tax \
-		or frappe.db.has_column("Customer", "exempt_from_sales_tax") \
+	sales_tax_exempted = (
+		hasattr(doc, "exempt_from_sales_tax")
+		and doc.exempt_from_sales_tax
+		or frappe.db.has_column("Customer", "exempt_from_sales_tax")
 		and frappe.db.get_value("Customer", doc.customer, "exempt_from_sales_tax")
+	)
 
 	if sales_tax_exempted:
 		for tax in doc.taxes:
@@ -240,6 +329,7 @@
 	else:
 		return False
 
+
 def validate_tax_request(tax_dict):
 	"""Return the sales tax that should be collected for a given order."""
 
@@ -283,9 +373,12 @@
 
 def get_iso_3166_2_state_code(address):
 	import pycountry
+
 	country_code = frappe.db.get_value("Country", address.get("country"), "code")
 
-	error_message = _("""{0} is not a valid state! Check for typos or enter the ISO code for your state.""").format(address.get("state"))
+	error_message = _(
+		"""{0} is not a valid state! Check for typos or enter the ISO code for your state."""
+	).format(address.get("state"))
 	state = address.get("state").upper().strip()
 
 	# The max length for ISO state codes is 3, excluding the country code
@@ -306,7 +399,7 @@
 		except LookupError:
 			frappe.throw(_(error_message))
 		else:
-			return lookup_state.code.split('-')[1]
+			return lookup_state.code.split("-")[1]
 
 
 def sanitize_error_response(response):
@@ -317,7 +410,7 @@
 		"to zip": "Zipcode",
 		"to city": "City",
 		"to state": "State",
-		"to country": "Country"
+		"to country": "Country",
 	}
 
 	for k, v in sanitized_responses.items():