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 f44e97c876..f70d30c6a4 100644
--- a/__init__.py
+++ b/__init__.py
@@ -2,8 +2,7 @@
 # this repository contains the full copyright notices and license terms.
 from trytond.pool import Pool
 
-from . import account
-from . import sale
+from . import account, sale
 
 
 def register():
diff --git a/account.py b/account.py
index bb4977cd74..dd6be10e32 100644
--- a/account.py
+++ b/account.py
@@ -5,9 +5,8 @@ from decimal import Decimal
 
 from trytond.i18n import gettext
 from trytond.model import fields
-from trytond.pool import Pool, PoolMeta
-
 from trytond.modules.account_payment.exceptions import PaymentValidationError
+from trytond.pool import Pool, PoolMeta
 
 
 def sale_payment_confirm(func):
diff --git a/sale.py b/sale.py
index 759ee8e6bf..7d3f98caaa 100644
--- a/sale.py
+++ b/sale.py
@@ -6,7 +6,7 @@ from trytond.i18n import gettext
 from trytond.model import ModelView, Workflow, fields
 from trytond.model.exceptions import AccessError
 from trytond.pool import PoolMeta
-from trytond.pyson import Eval, If, Bool
+from trytond.pyson import Bool, Eval, If
 
 
 def no_payment(error):
diff --git a/setup.py b/setup.py
index dadc6af054..f24ef801a6 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/test_sale_payment.py b/tests/test_sale_payment.py
index ac2361a234..79b4398a8d 100644
--- a/tests/test_sale_payment.py
+++ b/tests/test_sale_payment.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 AccountPaymentTestCase(ModuleTestCase):