Follow isort formatting

issue10928

.isort.cfg

@@ -0,0 +1,3 @@
+[settings]
+multi_line_output=4
+known_first_party=trytond

__init__.py

@@ -2,6 +2,7 @@
 # this repository contains the full copyright notices and license terms.
 
 from trytond.pool import Pool
+
 from . import purchase
 
 

setup.py

@@ -6,7 +6,8 @@ import io
 import os
 import re
 from configparser import ConfigParser
-from setuptools import setup, find_packages
+
+from setuptools import find_packages, setup
 
 
 def read(fname):

tests/__init__.py

@@ -2,7 +2,8 @@
 # this repository contains the full copyright notices and license terms.
 
 try:
-    from trytond.modules.purchase_invoice_line_standalone.tests.test_purchase_invoice_line_standalone import suite  # noqa: E501
+    from trytond.modules.purchase_invoice_line_standalone.tests.test_purchase_invoice_line_standalone import \
+        suite  # noqa: E501
 except ImportError:
     from .test_purchase_invoice_line_standalone import suite
 

tests/test_purchase_invoice_line_standalone.py

@@ -1,11 +1,11 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
-import unittest
 import doctest
+import unittest
+
 import trytond.tests.test_tryton
-from trytond.tests.test_tryton import ModuleTestCase
-from trytond.tests.test_tryton import doctest_teardown
-from trytond.tests.test_tryton import doctest_checker
+from trytond.tests.test_tryton import (
+    ModuleTestCase, doctest_checker, doctest_teardown)
 
 
 class PurchaseInvoiceLineStandaloneTestCase(ModuleTestCase):