diff --git a/.isort.cfg b/.isort.cfg
new file mode 100644
index 0000000000..e1c6495da9
--- /dev/null
+++ b/.isort.cfg
@@ -0,0 +1,3 @@
+[settings]
+multi_line_output=4
+known_first_party=trytond
diff --git a/__init__.py b/__init__.py
index d55fb2f019..7757e8fe99 100644
--- a/__init__.py
+++ b/__init__.py
@@ -1,6 +1,7 @@
 # This file is part of Tryton. The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
 from trytond.pool import Pool
+
 from . import account
 
 
diff --git a/setup.py b/setup.py
index ab94b3b083..0b71372e0f 100755
--- a/setup.py
+++ b/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):
diff --git a/tests/__init__.py b/tests/__init__.py
index 6f82ebb105..5f928d4ec1 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -2,7 +2,8 @@
 # this repository contains the full copyright notices and license terms.
 
 try:
-    from trytond.modules.account_de_skr03.tests.test_account_de_skr03 import suite  # noqa: E501
+    from trytond.modules.account_de_skr03.tests.test_account_de_skr03 import \
+        suite  # noqa: E501
 except ImportError:
     from .test_account_de_skr03 import suite
 
diff --git a/tests/test_account_de_skr03.py b/tests/test_account_de_skr03.py
index 982527bfb8..ebdc46604f 100644
--- a/tests/test_account_de_skr03.py
+++ b/tests/test_account_de_skr03.py
@@ -1,6 +1,7 @@
 # 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 trytond.tests.test_tryton
 from trytond.tests.test_tryton import ModuleTestCase