diff --git a/.flake8 b/.flake8
new file mode 100644
index 0000000000..bb03d08a82
--- /dev/null
+++ b/.flake8
@@ -0,0 +1,2 @@
+[flake8]
+ignore=E123,E124,E126,E128,W503
diff --git a/__init__.py b/__init__.py
index 583b4cc075..e0bd2096e8 100644
--- a/__init__.py
+++ b/__init__.py
@@ -29,8 +29,8 @@ def register():
     Pool.register(
         subscription.CreateLineConsumption,
         subscription.CreateSubscriptionInvoice,
-        party.PartyReplace,
-        party.PartyErase,
+        party.Replace,
+        party.Erase,
         module='sale_subscription', type_='wizard')
     Pool.register(
         module='sale_subscription', type_='report')
diff --git a/configuration.py b/configuration.py
index a0c7f6dc48..547d3d9176 100644
--- a/configuration.py
+++ b/configuration.py
@@ -4,8 +4,6 @@ from trytond.model import fields
 from trytond.pool import PoolMeta, Pool
 from trytond.pyson import Eval
 
-__all__ = ['Configuration', 'ConfigurationSequence']
-
 
 class Configuration(metaclass=PoolMeta):
     __name__ = 'sale.configuration'
diff --git a/invoice.py b/invoice.py
index e72189cf43..6b3958c22b 100644
--- a/invoice.py
+++ b/invoice.py
@@ -2,8 +2,6 @@
 # this repository contains the full copyright notices and license terms.
 from trytond.pool import Pool, PoolMeta
 
-__all__ = ['InvoiceLine']
-
 
 class InvoiceLine(metaclass=PoolMeta):
     __name__ = 'account.invoice.line'
diff --git a/party.py b/party.py
index 9502b192e7..ee7438d417 100644
--- a/party.py
+++ b/party.py
@@ -5,26 +5,24 @@ from trytond.pool import PoolMeta, Pool
 
 from trytond.modules.party.exceptions import EraseError
 
-__all__ = ['PartyReplace', 'PartyErase']
 
-
-class PartyReplace(metaclass=PoolMeta):
+class Replace(metaclass=PoolMeta):
     __name__ = 'party.replace'
 
     @classmethod
     def fields_to_replace(cls):
-        return super(PartyReplace, cls).fields_to_replace() + [
+        return super().fields_to_replace() + [
             ('sale.subscription', 'party'),
             ]
 
 
-class PartyErase(metaclass=PoolMeta):
+class Erase(metaclass=PoolMeta):
     __name__ = 'party.erase'
 
     def check_erase_company(self, party, company):
         pool = Pool()
         Subscription = pool.get('sale.subscription')
-        super(PartyErase, self).check_erase_company(party, company)
+        super().check_erase_company(party, company)
 
         subscriptions = Subscription.search([
                 ('party', '=', party.id),
diff --git a/recurrence.py b/recurrence.py
index f5b2e011b4..a735ec6fd9 100644
--- a/recurrence.py
+++ b/recurrence.py
@@ -11,7 +11,6 @@ from trytond.transaction import Transaction
 
 from .exceptions import RecurrenceRuleValidationError
 
-__all__ = ['RecurrenceRuleSet', 'RecurrenceRule']
 WEEKDAYS = {
     'MO': MO,
     'TU': TU,
diff --git a/service.py b/service.py
index 93e8a47e36..06f14b322c 100644
--- a/service.py
+++ b/service.py
@@ -3,8 +3,6 @@
 from trytond.model import ModelSQL, ModelView, DeactivableMixin, fields
 from trytond.pyson import Eval
 
-__all__ = ['Service']
-
 
 class Service(DeactivableMixin, ModelSQL, ModelView):
     "Subscription Service"
diff --git a/setup.py b/setup.py
index 35b1c7bd09..9a82526af8 100755
--- a/setup.py
+++ b/setup.py
@@ -79,8 +79,8 @@ setup(name=name,
     keywords='tryton sale subscription',
     package_dir={'trytond.modules.sale_subscription': '.'},
     packages=(
-        ['trytond.modules.sale_subscription'] +
-        ['trytond.modules.sale_subscription.%s' % p for p in find_packages()]
+        ['trytond.modules.sale_subscription']
+        + ['trytond.modules.sale_subscription.%s' % p for p in find_packages()]
         ),
     package_data={
         'trytond.modules.sale_subscription': (info.get('xml', [])
@@ -94,7 +94,8 @@ setup(name=name,
         'Intended Audience :: Developers',
         'Intended Audience :: Financial and Insurance Industry',
         'Intended Audience :: Legal Industry',
-        'License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)',
+        'License :: OSI Approved :: '
+        'GNU General Public License v3 or later (GPLv3+)',
         'Natural Language :: Bulgarian',
         'Natural Language :: Catalan',
         'Natural Language :: Chinese (Simplified)',