Make pep8 job great again

There is a bug in pep8, when 'select' used, it omits all default checks
and runs only those specified by 'select'.  We got hit by this issue
since I2d26534230ffe5d01aa0aab6ec902f81cfba774d was merged which lead to
almost no static checks in pep8 job.

Also note that off_by_default decorator has no effect for now because
factory in hacking is triggered after ignored checks are collected.
There will be a follow-up patch for that in order to make pep8 doing
its job quickly.

[1] https://github.com/PyCQA/pycodestyle/issues/390

Related-Bug: 1594756
Change-Id: I8e27f40908e1bb4307cc7c893169a9d99f3433c4

neutron/db/agentschedulers_db.py

@@ -24,7 +24,6 @@ from oslo_log import log as logging
 import oslo_messaging
 from oslo_service import loopingcall
 from oslo_utils import timeutils
-import sqlalchemy as sa
 from sqlalchemy import orm
 from sqlalchemy.orm import exc
 
@@ -34,8 +33,8 @@ from neutron.common import utils
 from neutron import context as ncontext
 from neutron.db import agents_db
 from neutron.db.availability_zone import network as network_az
+from neutron.db import model_base  # noqa
 from neutron.db.network_dhcp_agent_binding import models as ndab_model
-from neutron.db import model_base
 from neutron.extensions import agent as ext_agent
 from neutron.extensions import dhcpagentscheduler
 from neutron import worker as neutron_worker

neutron/db/db_base_plugin_v2.py

@@ -21,7 +21,6 @@ from neutron_lib import constants
 from neutron_lib.db import utils as db_utils
 from neutron_lib import exceptions as exc
 from oslo_config import cfg
-from oslo_db import exception as db_exc
 from oslo_db.sqlalchemy import utils as sa_utils
 from oslo_log import log as logging
 from oslo_utils import excutils
@@ -42,7 +41,6 @@ from neutron.common import exceptions as n_exc
 from neutron.common import ipv6_utils
 from neutron.common import utils
 from neutron import context as ctx
-from neutron.db import api as db_api
 from neutron.db import db_base_plugin_common
 from neutron.db import ipam_non_pluggable_backend
 from neutron.db import ipam_pluggable_backend

neutron/db/ipam_non_pluggable_backend.py

@@ -34,7 +34,6 @@ from neutron.db import models_v2
 from neutron.extensions import portbindings
 from neutron.ipam import requests as ipam_req
 from neutron.ipam import subnet_alloc
-from neutron.objects import subnetpool as subnetpool_obj
 
 LOG = logging.getLogger(__name__)
 

neutron/db/ipam_pluggable_backend.py

@@ -31,7 +31,6 @@ from neutron.extensions import portbindings
 from neutron.ipam import driver
 from neutron.ipam import exceptions as ipam_exc
 from neutron.ipam import requests as ipam_req
-from neutron.objects import subnetpool as subnetpool_obj
 
 
 LOG = logging.getLogger(__name__)

neutron/db/l3_dvr_db.py

@@ -214,7 +214,7 @@ class L3_NAT_with_dvr_db_mixin(l3_db.L3_NAT_db_mixin,
                 models_v2.Port.id == addr_pair_db.AllowedAddressPair.port_id,
                 addr_pair_db.AllowedAddressPair.ip_address == fixed_ip,
                 models_v2.Port.network_id == network_id,
-                models_v2.Port.admin_state_up == True)
+                models_v2.Port.admin_state_up == True)  # noqa
         return query.all()
 
     def _update_fip_assoc(self, context, fip, floatingip_db, external_port):

neutron/db/models_v2.py

@@ -19,8 +19,8 @@ from sqlalchemy import sql
 
 from neutron.api.v2 import attributes as attr
 from neutron.common import constants
-from neutron.db.network_dhcp_agent_binding import models as ndab_model
 from neutron.db import model_base
+from neutron.db.network_dhcp_agent_binding import models as ndab_model
 from neutron.db import rbac_db_models
 
 

neutron/db/network_dhcp_agent_binding/models.py

@@ -13,8 +13,8 @@
 import sqlalchemy as sa
 from sqlalchemy import orm
 
-from neutron.db import model_base
 from neutron.db import agents_db
+from neutron.db import model_base
 
 
 class NetworkDhcpAgentBinding(model_base.BASEV2):

neutron/scheduler/dhcp_agent_scheduler.py

@@ -24,9 +24,9 @@ from oslo_log import log as logging
 from sqlalchemy import sql
 
 from neutron._i18n import _LI, _LW
-from neutron.db.network_dhcp_agent_binding import models as ndab_model
 from neutron.db import agents_db
 from neutron.db import api as db_api
+from neutron.db.network_dhcp_agent_binding import models as ndab_model
 from neutron.extensions import availability_zone as az_ext
 from neutron.scheduler import base_resource_filter
 from neutron.scheduler import base_scheduler

neutron/tests/functional/agent/test_dhcp_agent.py

@@ -330,4 +330,5 @@ class DHCPAgentOVSTestCase(DHCPAgentOVSTestFramework):
             timeout=1,
             sleep=0.1,
             exception=RuntimeError("'dhcp_ready_on_ports' not be called"))
-        self.mock_plugin_api.dhcp_ready_on_ports.assert_called_with(ports_to_send)
+        self.mock_plugin_api.dhcp_ready_on_ports.assert_called_with(
+            ports_to_send)

neutron/tests/functional/pecan_wsgi/__init__.py

@@ -16,9 +16,9 @@
 
 import os
 
-import unittest2
 from pecan import set_config
 from pecan.testing import load_test_app
+import unittest2
 
 
 __all__ = ['FunctionalTest']

neutron/tests/functional/scheduler/test_dhcp_agent_scheduler.py

@@ -21,10 +21,10 @@ import six
 import testscenarios
 
 from neutron import context
-from neutron.db.network_dhcp_agent_binding import models as ndab_model
 from neutron.db import agents_db
 from neutron.db import agentschedulers_db
 from neutron.db import common_db_mixin
+from neutron.db.network_dhcp_agent_binding import models as ndab_model
 from neutron.extensions import providernet
 from neutron.scheduler import dhcp_agent_scheduler
 from neutron.tests.common import helpers

neutron/tests/tempest/scenario/test_basic.py

@@ -31,7 +31,6 @@ class NetworkBasicTest(base.BaseTempestTestCase):
     # Default to ipv4.
     _ip_version = 4
 
-
     @test.idempotent_id('de07fe0a-e955-449e-b48b-8641c14cd52e')
     def test_basic_instance(self):
         network = self.create_network()

neutron/tests/tools.py

@@ -32,9 +32,9 @@ import unittest2
 
 import neutron
 from neutron.api.v2 import attributes
-from neutron.db import common_db_mixin
 from neutron.common import constants as n_const
 from neutron.common import ipv6_utils
+from neutron.db import common_db_mixin
 
 
 class AttributeMapMemento(fixtures.Fixture):

neutron/tests/unit/db/test_dvr_mac_db.py

@@ -15,7 +15,6 @@
 
 import mock
 from neutron_lib import constants
-from oslo_config import cfg
 
 from neutron.callbacks import events
 from neutron.callbacks import registry

neutron/tests/unit/ipam/test_requests.py

@@ -318,7 +318,6 @@ class TestAddressRequestFactory(base.BaseTestCase):
             ipam_req.PreferNextAddressRequest)
 
 
-
 class TestSubnetRequestFactory(IpamSubnetRequestTestCase):
 
     def _build_subnet_dict(self, id=None, cidr='192.168.1.0/24',

neutron/tests/unit/objects/test_base.py

@@ -816,6 +816,7 @@ class BaseDbObjectTestCase(_BaseObjectTestCase):
 
     def test_get_objects_supports_extra_filtername(self):
         self.filtered_args = None
+
         def foo_filter(query, filters):
             self.filtered_args = filters
             return query

neutron/tests/unit/scheduler/test_dhcp_agent_scheduler.py

@@ -22,10 +22,10 @@ from oslo_utils import importutils
 import testscenarios
 
 from neutron import context
-from neutron.db.network_dhcp_agent_binding import models as ndab_model
 from neutron.db import agentschedulers_db as sched_db
 from neutron.db import common_db_mixin
 from neutron.db import models_v2
+from neutron.db.network_dhcp_agent_binding import models as ndab_model
 from neutron.extensions import dhcpagentscheduler
 from neutron.scheduler import dhcp_agent_scheduler
 from neutron.tests.common import helpers

neutron/tests/unit/scheduler/test_l3_agent_scheduler.py

@@ -1165,7 +1165,8 @@ class L3DvrSchedulerTestCase(testlib_api.SqlTestCase):
                 (l3plugin.l3_rpc_notifier.router_removed_from_agent.
                  assert_called_once_with(mock.ANY, 'foo_id', source_host))
                 self.assertEqual(
-                   1, l3plugin.delete_arp_entry_for_dvr_service_port.call_count)
+                    1,
+                    l3plugin.delete_arp_entry_for_dvr_service_port.call_count)
             if fip and not routers_to_remove:
                 (l3plugin.l3_rpc_notifier.routers_updated_on_host.
                  assert_called_once_with(mock.ANY, ['router_id'], source_host))

tox.ini

@@ -128,10 +128,6 @@ commands = sphinx-build -W -b html doc/source doc/build/html
 ignore = E125,E126,E128,E129,E265,H404,H405
 show-source = true
 exclude = ./.*,build,dist
-# N334 unittest2 must be used instead of unittest
-# Off by default to avoid breaking external projects.
-# Compliant projects can enable it like this:
-select = N334
 
 [hacking]
 import_exceptions = neutron._i18n