chore: Clean up imports (#27302)

* chore: Added isort to pre-commit config

* chore: Sort imports with isort

* chore: Clean up imports with pycln

* chore: Sort imports with isort

* chore: Fix import issues

* chore: Clean up sider issues

* chore: Remove import errors from flake8 ignore list

* chore: Clean up lint issues
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())