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 57bb8a9ba7..b1582f7353 100644
--- a/__init__.py
+++ b/__init__.py
@@ -2,9 +2,8 @@
 # this repository contains the full copyright notices and license terms.
 
 from trytond.pool import Pool
-from . import product
-from . import stock
 
+from . import product, stock
 from .stock import LotSledMixin
 
 __all__ = ['LotSledMixin', 'register']
diff --git a/product.py b/product.py
index bb516bc7d0..f2518bb627 100644
--- a/product.py
+++ b/product.py
@@ -1,7 +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 PoolMeta
 from trytond.model import fields
+from trytond.pool import PoolMeta
 from trytond.pyson import Eval
 
 from .stock import DATE_STATE
diff --git a/setup.py b/setup.py
index b68c550862..580997ab4e 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/stock.py b/stock.py
index a0b419148c..a0d4513aa5 100644
--- a/stock.py
+++ b/stock.py
@@ -2,18 +2,18 @@
 # this repository contains the full copyright notices and license terms.
 import datetime
 
-from sql import Union, Join, Select, Table, Null, As
+from sql import As, Join, Null, Select, Table, Union
 from sql.conditionals import Greatest
 
 from trytond.i18n import gettext
-from trytond.pool import PoolMeta, Pool
-from trytond.model import ModelView, Workflow, ModelSQL, ValueMixin, fields
+from trytond.model import ModelSQL, ModelView, ValueMixin, Workflow, fields
 from trytond.model.exceptions import AccessError
-from trytond.pyson import Eval
-from trytond.transaction import Transaction
-from trytond.tools import grouped_slice
-
 from trytond.modules.stock.exceptions import PeriodCloseError
+from trytond.pool import Pool, PoolMeta
+from trytond.pyson import Eval
+from trytond.tools import grouped_slice
+from trytond.transaction import Transaction
+
 from .exceptions import LotExpiredError, LotExpiredWarning
 
 DATE_STATE = [
diff --git a/tests/test_stock_lot_sled.py b/tests/test_stock_lot_sled.py
index c70f508de3..51b82410f4 100644
--- a/tests/test_stock_lot_sled.py
+++ b/tests/test_stock_lot_sled.py
@@ -1,15 +1,14 @@
 # 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 datetime
+import unittest
 
 import trytond.tests.test_tryton
+from trytond.modules.company.tests import (
+    CompanyTestMixin, create_company, set_company)
+from trytond.pool import Pool
 from trytond.tests.test_tryton import ModuleTestCase, with_transaction
 from trytond.transaction import Transaction
-from trytond.pool import Pool
-
-from trytond.modules.company.tests import (
-    create_company, set_company, CompanyTestMixin)
 
 
 class StockLotSLEDTestCase(CompanyTestMixin, ModuleTestCase):