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 51df5bf3c4..ae70b82bd0 100644
--- a/__init__.py
+++ b/__init__.py
@@ -2,8 +2,8 @@
 # this repository contains the full copyright notices and license terms.
 
 from trytond.pool import Pool
-from . import account
-from . import party
+
+from . import account, party
 
 __all__ = ['register']
 
diff --git a/account.py b/account.py
index b1159357d1..2823bdee83 100644
--- a/account.py
+++ b/account.py
@@ -3,14 +3,14 @@
 from collections import defaultdict
 from itertools import groupby
 
-from sql import Null, Literal
+from sql import Literal, Null
 
 from trytond.i18n import gettext
 from trytond.model import ModelSQL, ModelView, Workflow, fields
-from trytond.pool import PoolMeta, Pool
+from trytond.pool import Pool, PoolMeta
 from trytond.pyson import Eval
-from trytond.transaction import Transaction
 from trytond.tools import sortable_values
+from trytond.transaction import Transaction
 
 from .exceptions import ClosePeriodWarning
 
diff --git a/setup.py b/setup.py
index 4b06e5260a..7d61d4bc89 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 693cf9af1a..6f23886b80 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_tax_cash.tests.test_account_tax_cash import suite  # noqa: E501
+    from trytond.modules.account_tax_cash.tests.test_account_tax_cash import \
+        suite  # noqa: E501
 except ImportError:
     from .test_account_tax_cash import suite
 
diff --git a/tests/test_account_tax_cash.py b/tests/test_account_tax_cash.py
index 900074f275..c9dcde9d5e 100644
--- a/tests/test_account_tax_cash.py
+++ b/tests/test_account_tax_cash.py
@@ -1,14 +1,12 @@
 # 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 doctest
 import unittest
 
-import doctest
-
-from trytond.tests.test_tryton import ModuleTestCase
+from trytond.tests.test_tryton import (
+    ModuleTestCase, doctest_checker, doctest_teardown)
 from trytond.tests.test_tryton import suite as test_suite
-from trytond.tests.test_tryton import doctest_teardown
-from trytond.tests.test_tryton import doctest_checker
 
 
 class AccountTaxCashTestCase(ModuleTestCase):