diff --git a/cinderclient/apiclient/base.py b/cinderclient/apiclient/base.py
index c0bcd24a5..8caa0bc1b 100644
--- a/cinderclient/apiclient/base.py
+++ b/cinderclient/apiclient/base.py
@@ -16,9 +16,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-"""
-Base utilities to build API operation managers and objects on top of.
-"""
+"""Base utilities to build API operation managers and objects on top of."""
 
 # E1102: %s is not callable
 # pylint: disable=E1102
@@ -26,13 +24,13 @@ Base utilities to build API operation managers and objects on top of.
 import abc
 import copy
 
+from oslo_utils import encodeutils
+from oslo_utils import strutils
 from requests import Response
 
 
 from cinderclient.apiclient import exceptions
 from cinderclient import utils
-from oslo_utils import encodeutils
-from oslo_utils import strutils
 
 
 def getid(obj):
diff --git a/cinderclient/shell.py b/cinderclient/shell.py
index f0825d5f2..0c3fa4535 100644
--- a/cinderclient/shell.py
+++ b/cinderclient/shell.py
@@ -22,6 +22,7 @@ import collections
 import getpass
 import logging
 import sys
+from urllib import parse as urlparse
 
 from keystoneauth1 import discover
 from keystoneauth1 import exceptions
@@ -31,7 +32,6 @@ from keystoneauth1 import loading
 from keystoneauth1 import session
 from oslo_utils import importutils
 import requests
-from urllib import parse as urlparse
 
 import cinderclient
 from cinderclient._i18n import _
diff --git a/cinderclient/tests/unit/fake_actions_module.py b/cinderclient/tests/unit/fake_actions_module.py
index 07e7d29b4..a2c4bf79c 100644
--- a/cinderclient/tests/unit/fake_actions_module.py
+++ b/cinderclient/tests/unit/fake_actions_module.py
@@ -26,8 +26,8 @@ def do_fake_action():
     return "fake_action 3.0 to 3.1"
 
 
-@api_versions.wraps("3.2", "3.3")  # noqa: F811
-def do_fake_action():  # noqa
+@api_versions.wraps("3.2", "3.3")
+def do_fake_action():  # noqa: F811
     return "fake_action 3.2 to 3.3"
 
 
diff --git a/cinderclient/tests/unit/test_utils.py b/cinderclient/tests/unit/test_utils.py
index a9636db83..1fb9433b4 100644
--- a/cinderclient/tests/unit/test_utils.py
+++ b/cinderclient/tests/unit/test_utils.py
@@ -70,8 +70,8 @@ class FakeManagerWithApi(base.Manager):
     def return_api_version(self):
         return '3.1'
 
-    @api_versions.wraps('3.2')  # noqa: F811
-    def return_api_version(self):  # noqa
+    @api_versions.wraps('3.2')
+    def return_api_version(self):  # noqa: F811
         return '3.2'
 
 
diff --git a/cinderclient/tests/unit/v2/contrib/test_list_extensions.py b/cinderclient/tests/unit/v2/contrib/test_list_extensions.py
index 313b6ef58..4b6100f7a 100644
--- a/cinderclient/tests/unit/v2/contrib/test_list_extensions.py
+++ b/cinderclient/tests/unit/v2/contrib/test_list_extensions.py
@@ -15,11 +15,9 @@
 #    under the License.
 
 from cinderclient import extension
-from cinderclient.v2.contrib import list_extensions
-
 from cinderclient.tests.unit import utils
 from cinderclient.tests.unit.v2 import fakes
-
+from cinderclient.v2.contrib import list_extensions
 
 extensions = [
     extension.Extension(list_extensions.__name__.split(".")[-1],
diff --git a/cinderclient/tests/unit/v2/fakes.py b/cinderclient/tests/unit/v2/fakes.py
index 99a87d018..4c09e9dcb 100644
--- a/cinderclient/tests/unit/v2/fakes.py
+++ b/cinderclient/tests/unit/v2/fakes.py
@@ -13,7 +13,6 @@
 # limitations under the License.
 
 from datetime import datetime
-
 from urllib import parse as urlparse
 
 from cinderclient import client as base_client
diff --git a/cinderclient/tests/unit/v2/test_capabilities.py b/cinderclient/tests/unit/v2/test_capabilities.py
index 01a132d95..98d8d71fc 100644
--- a/cinderclient/tests/unit/v2/test_capabilities.py
+++ b/cinderclient/tests/unit/v2/test_capabilities.py
@@ -13,10 +13,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from cinderclient.v2.capabilities import Capabilities
-
 from cinderclient.tests.unit import utils
 from cinderclient.tests.unit.v2 import fakes
+from cinderclient.v2.capabilities import Capabilities
 
 cs = fakes.FakeClient()
 
diff --git a/cinderclient/tests/unit/v2/test_pools.py b/cinderclient/tests/unit/v2/test_pools.py
index 543e31674..e909871ae 100644
--- a/cinderclient/tests/unit/v2/test_pools.py
+++ b/cinderclient/tests/unit/v2/test_pools.py
@@ -13,10 +13,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from cinderclient.v2.pools import Pool
-
 from cinderclient.tests.unit import utils
 from cinderclient.tests.unit.v2 import fakes
+from cinderclient.v2.pools import Pool
 
 cs = fakes.FakeClient()
 
diff --git a/cinderclient/tests/unit/v2/test_shell.py b/cinderclient/tests/unit/v2/test_shell.py
index f54846e95..78ecf7409 100644
--- a/cinderclient/tests/unit/v2/test_shell.py
+++ b/cinderclient/tests/unit/v2/test_shell.py
@@ -14,11 +14,11 @@
 #    under the License.
 
 from unittest import mock
+from urllib import parse
 
 import ddt
 import fixtures
 from requests_mock.contrib import fixture as requests_mock_fixture
-from urllib import parse
 
 from cinderclient import client
 from cinderclient import exceptions
diff --git a/cinderclient/tests/unit/v2/test_type_access.py b/cinderclient/tests/unit/v2/test_type_access.py
index 35a4480a7..d904c1d3e 100644
--- a/cinderclient/tests/unit/v2/test_type_access.py
+++ b/cinderclient/tests/unit/v2/test_type_access.py
@@ -14,10 +14,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from cinderclient.v2 import volume_type_access
-
 from cinderclient.tests.unit import utils
 from cinderclient.tests.unit.v2 import fakes
+from cinderclient.v2 import volume_type_access
 
 cs = fakes.FakeClient()
 
diff --git a/cinderclient/tests/unit/v2/test_types.py b/cinderclient/tests/unit/v2/test_types.py
index 9ba13a9c0..cf13723f1 100644
--- a/cinderclient/tests/unit/v2/test_types.py
+++ b/cinderclient/tests/unit/v2/test_types.py
@@ -14,10 +14,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from cinderclient.v2 import volume_types
-
 from cinderclient.tests.unit import utils
 from cinderclient.tests.unit.v2 import fakes
+from cinderclient.v2 import volume_types
 
 cs = fakes.FakeClient()
 
diff --git a/cinderclient/tests/unit/v3/fakes.py b/cinderclient/tests/unit/v3/fakes.py
index 3fb6a36b0..7647fb39f 100644
--- a/cinderclient/tests/unit/v3/fakes.py
+++ b/cinderclient/tests/unit/v3/fakes.py
@@ -14,10 +14,9 @@
 
 from datetime import datetime
 
-from cinderclient.v3 import client
-
 from cinderclient.tests.unit import fakes
 from cinderclient.tests.unit.v2 import fakes as fake_v2
+from cinderclient.v3 import client
 
 
 fake_attachment = {'attachment': {
diff --git a/cinderclient/tests/unit/v3/test_clusters.py b/cinderclient/tests/unit/v3/test_clusters.py
index c2045b6e1..21b560d5f 100644
--- a/cinderclient/tests/unit/v3/test_clusters.py
+++ b/cinderclient/tests/unit/v3/test_clusters.py
@@ -13,12 +13,12 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import ddt
+
 from cinderclient import api_versions
 from cinderclient import exceptions as exc
 from cinderclient.tests.unit import utils
 from cinderclient.tests.unit.v3 import fakes
-import ddt
-
 
 cs = fakes.FakeClient(api_version=api_versions.APIVersion('3.7'))
 
diff --git a/cinderclient/tests/unit/v3/test_group_types.py b/cinderclient/tests/unit/v3/test_group_types.py
index 5833c3fc2..2263d0e8a 100644
--- a/cinderclient/tests/unit/v3/test_group_types.py
+++ b/cinderclient/tests/unit/v3/test_group_types.py
@@ -16,10 +16,9 @@
 
 from cinderclient import api_versions
 from cinderclient import exceptions as exc
-from cinderclient.v3 import group_types
-
 from cinderclient.tests.unit import utils
 from cinderclient.tests.unit.v3 import fakes
+from cinderclient.v3 import group_types
 
 cs = fakes.FakeClient(api_version=api_versions.APIVersion('3.11'))
 pre_cs = fakes.FakeClient(api_version=api_versions.APIVersion('3.10'))
diff --git a/cinderclient/tests/unit/v3/test_services.py b/cinderclient/tests/unit/v3/test_services.py
index 0715cd378..8af368283 100644
--- a/cinderclient/tests/unit/v3/test_services.py
+++ b/cinderclient/tests/unit/v3/test_services.py
@@ -14,10 +14,9 @@
 #    under the License.
 
 from cinderclient import api_versions
-from cinderclient.v3 import services
-
 from cinderclient.tests.unit import utils
 from cinderclient.tests.unit.v3 import fakes
+from cinderclient.v3 import services
 
 
 class ServicesTest(utils.TestCase):
diff --git a/cinderclient/tests/unit/v3/test_shell.py b/cinderclient/tests/unit/v3/test_shell.py
index 82e3943da..756f51201 100644
--- a/cinderclient/tests/unit/v3/test_shell.py
+++ b/cinderclient/tests/unit/v3/test_shell.py
@@ -51,15 +51,14 @@ from cinderclient import base
 from cinderclient import client
 from cinderclient import exceptions
 from cinderclient import shell
+from cinderclient.tests.unit.fixture_data import keystone_client
+from cinderclient.tests.unit import utils
+from cinderclient.tests.unit.v3 import fakes
 from cinderclient import utils as cinderclient_utils
 from cinderclient.v3 import attachments
 from cinderclient.v3 import volume_snapshots
 from cinderclient.v3 import volumes
 
-from cinderclient.tests.unit.fixture_data import keystone_client
-from cinderclient.tests.unit import utils
-from cinderclient.tests.unit.v3 import fakes
-
 
 @ddt.ddt
 @mock.patch.object(client, 'Client', fakes.FakeClient)
diff --git a/cinderclient/v3/messages.py b/cinderclient/v3/messages.py
index 2c620c206..93aeefa71 100644
--- a/cinderclient/v3/messages.py
+++ b/cinderclient/v3/messages.py
@@ -51,8 +51,9 @@ class MessageManager(base.ManagerWithFind):
         url = self._build_list_url(resource_type, detailed=False)
         return self._list(url, resource_type)
 
-    @api_versions.wraps('3.5')  # noqa: F811
-    def list(self, search_opts=None, marker=None, limit=None, sort=None):  # noqa
+    @api_versions.wraps('3.5')
+    def list(self, search_opts=None, marker=None, limit=None,  # noqa: F811
+             sort=None):
         """Lists all messages.
 
         :param search_opts: Search options to filter out volumes.
diff --git a/cinderclient/v3/volume_backups.py b/cinderclient/v3/volume_backups.py
index 7dd85603b..22d25a338 100644
--- a/cinderclient/v3/volume_backups.py
+++ b/cinderclient/v3/volume_backups.py
@@ -60,8 +60,8 @@ class VolumeBackupManager(volume_backups.VolumeBackupManager):
         return self._create_backup(volume_id, container, name, description,
                                    incremental, force, snapshot_id)
 
-    @api_versions.wraps("3.43")  # noqa: F811
-    def create(self, volume_id, container=None,  # noqa
+    @api_versions.wraps("3.43")
+    def create(self, volume_id, container=None,  # noqa: F811
                name=None, description=None,
                incremental=False, force=False,
                snapshot_id=None,
@@ -84,10 +84,10 @@ class VolumeBackupManager(volume_backups.VolumeBackupManager):
         return self._create_backup(volume_id, container, name, description,
                                    incremental, force, snapshot_id, metadata)
 
-    @api_versions.wraps("3.51")  # noqa: F811
-    def create(self, volume_id, container=None, name=None, description=None,  # noqa
-               incremental=False, force=False, snapshot_id=None, metadata=None,
-               availability_zone=None):
+    @api_versions.wraps("3.51")
+    def create(self, volume_id, container=None, name=None,  # noqa: F811
+               description=None, incremental=False, force=False,
+               snapshot_id=None, metadata=None, availability_zone=None):
         return self._create_backup(volume_id, container, name, description,
                                    incremental, force, snapshot_id, metadata,
                                    availability_zone)
diff --git a/cinderclient/v3/volumes.py b/cinderclient/v3/volumes.py
index 974bcfcfe..8ea388008 100644
--- a/cinderclient/v3/volumes.py
+++ b/cinderclient/v3/volumes.py
@@ -159,8 +159,8 @@ class VolumeManager(volumes.VolumeManager):
 
         return common_base.ListWithMeta([], response_list)
 
-    @api_versions.wraps("3.15")  # noqa: F811
-    def delete_metadata(self, volume, keys):  # noqa
+    @api_versions.wraps("3.15")
+    def delete_metadata(self, volume, keys):  # noqa: F811
         """Delete specified keys from volumes metadata.
 
         :param volume: The :class:`Volume`.
@@ -190,9 +190,9 @@ class VolumeManager(volumes.VolumeManager):
                              'container_format': container_format,
                              'disk_format': disk_format})
 
-    @api_versions.wraps("3.1")  # noqa: F811
-    def upload_to_image(self, volume, force, image_name, container_format,  # noqa
-                        disk_format, visibility, protected):
+    @api_versions.wraps("3.1")
+    def upload_to_image(self, volume, force, image_name,  # noqa: F811
+                        container_format, disk_format, visibility, protected):
         """Upload volume to image service as image.
         :param volume: The :class:`Volume` to upload.
         """
@@ -264,8 +264,8 @@ class VolumeManager(volumes.VolumeManager):
 
         return self._get('/scheduler-stats/get_pools%s' % query_string, None)
 
-    @api_versions.wraps("3.33")  # noqa: F811
-    def get_pools(self, detail, search_opts):  # noqa
+    @api_versions.wraps("3.33")
+    def get_pools(self, detail, search_opts):  # noqa: F811
         """Show pool information for backends."""
         # pylint: disable=function-redefined
         options = {'detail': detail}
diff --git a/test-requirements.txt b/test-requirements.txt
index c66025919..9e9500238 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -4,6 +4,8 @@
 # Hacking already pins down pep8, pyflakes and flake8
 
 hacking>=4.0.0,<4.1.0 # Apache-2.0
+flake8-import-order # LGPLv3
+
 docutils>=0.15.2
 coverage>=5.2.1 # Apache-2.0
 ddt>=1.4.1 # MIT
diff --git a/tools/colorizer.py b/tools/colorizer.py
index 2a667b41f..cf89535b5 100755
--- a/tools/colorizer.py
+++ b/tools/colorizer.py
@@ -42,10 +42,10 @@
 """Display a subunit stream through a colorized unittest test runner."""
 
 import heapq
-import subunit
 import sys
 import unittest
 
+import subunit
 import testtools
 
 
diff --git a/tox.ini b/tox.ini
index a12307095..d66d486ee 100644
--- a/tox.ini
+++ b/tox.ini
@@ -109,7 +109,9 @@ commands = {[testenv:functional]commands}
 [flake8]
 show-source = True
 ignore = H404,H405,E122,E123,E128,E251,W504
-exclude=.venv,.git,.tox,dist,doc,*lib/python*,*egg,build
+exclude = .venv,.git,.tox,dist,doc,*lib/python*,*egg,build
+application-import-names = cinderclient
+import-order-style = pep8
 
 [doc8]
 ignore-path=.tox,*.egg-info,doc/src/api,doc/source/drivers.rst,doc/build,.eggs/*/EGG-INFO/*.txt,doc/source/configuration/tables,./*.txt,releasenotes/build,doc/source/cli/details.rst