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 c3e6599f88..fe99eb38d3 100644
--- a/__init__.py
+++ b/__init__.py
@@ -1,10 +1,8 @@
 # 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 Pool
-from . import account
-from . import party
-from . import reporting_tax
-from . import account_payment
+
+from . import account, account_payment, party, reporting_tax
 
 
 def register():
diff --git a/account.py b/account.py
index 173d056fd0..d2157a6bbc 100644
--- a/account.py
+++ b/account.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.model import fields
-from trytond.pool import PoolMeta, Pool
+from trytond.pool import Pool, PoolMeta
 from trytond.pyson import Bool, Eval
 from trytond.transaction import Transaction
 
diff --git a/reporting_tax.py b/reporting_tax.py
index f8207e444a..cf609b0396 100644
--- a/reporting_tax.py
+++ b/reporting_tax.py
@@ -2,35 +2,34 @@
 # this repository contains the full copyright notices and license terms.
 import csv
 import unicodedata
-from io import BytesIO, TextIOWrapper
-
 from collections import defaultdict
-from dateutil.relativedelta import relativedelta
 from decimal import Decimal
+from io import BytesIO, TextIOWrapper
 from operator import attrgetter
 
-from sql import Cast, Null, Literal
+from dateutil.relativedelta import relativedelta
+# XXX fix: https://genshi.edgewall.org/ticket/582
+from genshi.template.astutil import ASTCodeGenerator, ASTTransformer
+from sql import Cast, Literal, Null
 from sql.aggregate import Count, Min, Sum
 from sql.conditionals import Case, Coalesce
-from sql.functions import Substring, Position, Extract, CurrentTimestamp
+from sql.functions import CurrentTimestamp, Extract, Position, Substring
 from sql.operators import Exists
 
 from trytond.i18n import gettext
 from trytond.model import ModelSQL, ModelView, fields
 from trytond.model.modelsql import convert_from
+from trytond.modules.account_eu.account import ECSalesList, ECSalesListContext
+from trytond.modules.currency.fields import Monetary
 from trytond.pool import Pool
 from trytond.pyson import Eval, If
 from trytond.report import Report
 from trytond.transaction import Transaction
-from trytond.wizard import Wizard, StateView, StateTransition, StateReport, \
-    Button
-from trytond.modules.account_eu.account import ECSalesList, ECSalesListContext
-from trytond.modules.currency.fields import Monetary
+from trytond.wizard import (
+    Button, StateReport, StateTransition, StateView, Wizard)
 
 from .exceptions import PrintError
 
-# XXX fix: https://genshi.edgewall.org/ticket/582
-from genshi.template.astutil import ASTCodeGenerator, ASTTransformer
 if not hasattr(ASTCodeGenerator, 'visit_NameConstant'):
     def visit_NameConstant(self, node):
         if node.value is None:
diff --git a/setup.py b/setup.py
index f594bb47c2..1da0727a50 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_account_es.py b/tests/test_account_es.py
index aa9a2067b7..36d11164ab 100644
--- a/tests/test_account_es.py
+++ b/tests/test_account_es.py
@@ -1,12 +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 AccountTestCase(ModuleTestCase):