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 5f131272d6..5fc9b58edc 100644
--- a/__init__.py
+++ b/__init__.py
@@ -2,10 +2,8 @@
 # this repository contains the full copyright notices and license terms.
 
 from trytond.pool import Pool
-from . import account
-from . import ir
-from . import party
-from . import routes
+
+from . import account, ir, party, routes
 
 __all__ = ['register', 'routes']
 
diff --git a/account.py b/account.py
index ba1c05f588..482243f0cf 100644
--- a/account.py
+++ b/account.py
@@ -5,25 +5,24 @@ import urllib
 import uuid
 
 import braintree
-from braintree.exceptions import TooManyRequestsError, GatewayTimeoutError
+from braintree.exceptions import GatewayTimeoutError, TooManyRequestsError
 from braintree.exceptions.braintree_error import BraintreeError
 
 from trytond.cache import Cache
 from trytond.config import config
 from trytond.i18n import gettext
 from trytond.model import (
-    ModelSQL, ModelView, DeactivableMixin, Workflow, fields)
-from trytond.pool import PoolMeta, Pool
-from trytond.pyson import Eval, Bool
+    DeactivableMixin, ModelSQL, ModelView, Workflow, fields)
+from trytond.modules.account_payment.exceptions import (
+    PaymentValidationError, ProcessError)
+from trytond.modules.currency.fields import Monetary
+from trytond.pool import Pool, PoolMeta
+from trytond.pyson import Bool, Eval
 from trytond.report import Report
 from trytond.transaction import Transaction
 from trytond.url import http_host
 from trytond.wizard import (
-    Wizard, StateAction, StateView, StateTransition, Button)
-
-from trytond.modules.account_payment.exceptions import (
-    ProcessError, PaymentValidationError)
-from trytond.modules.currency.fields import Monetary
+    Button, StateAction, StateTransition, StateView, Wizard)
 
 from .common import BraintreeCustomerMethodMixin
 
diff --git a/party.py b/party.py
index ed85ddf4e7..b370f8341b 100644
--- a/party.py
+++ b/party.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, Pool
 from trytond.model import fields
+from trytond.pool import Pool, PoolMeta
 
 from .common import BraintreeCustomerMethodMixin
 
diff --git a/routes.py b/routes.py
index f75148783d..2346e3c575 100644
--- a/routes.py
+++ b/routes.py
@@ -2,6 +2,7 @@
 # this repository contains the full copyright notices and license terms.
 import http.client
 import logging
+
 try:
     from http import HTTPStatus
 except ImportError:
diff --git a/setup.py b/setup.py
index 15921e3548..8d5a6190c4 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, slice=None):
diff --git a/tests/__init__.py b/tests/__init__.py
index 9bee44bda6..bb17288e43 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_payment_braintree.tests.test_account_payment_braintree import suite  # noqa: E501
+    from trytond.modules.account_payment_braintree.tests.test_account_payment_braintree import \
+        suite  # noqa: E501
 except ImportError:
     from .test_account_payment_braintree import suite
 
diff --git a/tests/test_account_payment_braintree.py b/tests/test_account_payment_braintree.py
index fb2b5a0956..fc8247fbcf 100644
--- a/tests/test_account_payment_braintree.py
+++ b/tests/test_account_payment_braintree.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 os
 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 AccountPaymentBraintreeTestCase(ModuleTestCase):