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 e1b2af2b83..ab170db61b 100644
--- a/__init__.py
+++ b/__init__.py
@@ -2,6 +2,7 @@
 # this repository contains the full copyright notices and license terms.
 
 from trytond.pool import Pool
+
 from . import product
 
 __all__ = ['register']
diff --git a/product.py b/product.py
index d95b1f20ec..a7245f1bb9 100644
--- a/product.py
+++ b/product.py
@@ -4,17 +4,17 @@ from sql import Column, Literal, Window
 from sql.aggregate import Max
 from sql.conditionals import Coalesce
 from sql.functions import CurrentTimestamp, LastValue
+
 try:
     import pytz
 except ImportError:
     pytz = None
 
-from trytond.model import ModelView, ModelSQL, fields
+from trytond.model import ModelSQL, ModelView, fields
+from trytond.modules.product import round_price
 from trytond.pool import Pool, PoolMeta
 from trytond.transaction import Transaction
 
-from trytond.modules.product import round_price
-
 
 def convert_from(table, tables):
     right, condition = tables[None]
diff --git a/setup.py b/setup.py
index 701b4dc5c5..cc8fb58bc7 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 d7f66adec9..d5fd765e80 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.product_cost_history.tests.test_product_cost_history import suite  # noqa: E501
+    from trytond.modules.product_cost_history.tests.test_product_cost_history import \
+        suite  # noqa: E501
 except ImportError:
     from .test_product_cost_history import suite
 
diff --git a/tests/test_product_cost_history.py b/tests/test_product_cost_history.py
index d0aa57eb50..c414c470b8 100644
--- a/tests/test_product_cost_history.py
+++ b/tests/test_product_cost_history.py
@@ -2,10 +2,10 @@
 # this repository contains the full copyright notices and license terms.
 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 ProductCostHistoryTestCase(ModuleTestCase):