diff --git a/tempest/api/compute/images/test_image_metadata.py b/tempest/api/compute/images/test_image_metadata.py
index 6f80730..999233d 100644
--- a/tempest/api/compute/images/test_image_metadata.py
+++ b/tempest/api/compute/images/test_image_metadata.py
@@ -71,7 +71,7 @@
         body = body['image'] if 'image' in body else body
         cls.image_id = body['id']
         cls.images.append(cls.image_id)
-        image_file = six.StringIO(('*' * 1024))
+        image_file = six.BytesIO((b'*' * 1024))
         if CONF.image_feature_enabled.api_v1:
             cls.glance_client.update_image(cls.image_id, data=image_file)
         else:
diff --git a/tempest/api/compute/images/test_list_image_filters.py b/tempest/api/compute/images/test_list_image_filters.py
index c0caa52..f340658 100755
--- a/tempest/api/compute/images/test_list_image_filters.py
+++ b/tempest/api/compute/images/test_list_image_filters.py
@@ -78,7 +78,7 @@
             # Wait 1 second between creation and upload to ensure a delta
             # between created_at and updated_at.
             time.sleep(1)
-            image_file = six.StringIO(('*' * 1024))
+            image_file = six.BytesIO((b'*' * 1024))
             if CONF.image_feature_enabled.api_v1:
                 cls.glance_client.update_image(image_id, data=image_file)
             else:
diff --git a/tempest/api/compute/servers/test_list_servers_negative.py b/tempest/api/compute/servers/test_list_servers_negative.py
index 357c907..fcd5a24 100644
--- a/tempest/api/compute/servers/test_list_servers_negative.py
+++ b/tempest/api/compute/servers/test_list_servers_negative.py
@@ -13,8 +13,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from six import moves
-
 from tempest.api.compute import base
 from tempest.common import waiters
 from tempest.lib import exceptions as lib_exc
@@ -38,7 +36,7 @@
         # tearDownClass method of the super-class.
         cls.existing_fixtures = []
         cls.deleted_fixtures = []
-        for x in moves.xrange(2):
+        for x in range(2):
             srv = cls.create_test_server(wait_until='ACTIVE')
             cls.existing_fixtures.append(srv)
 
diff --git a/tempest/api/compute/servers/test_server_personality.py b/tempest/api/compute/servers/test_server_personality.py
index baa4f9a..cd90473 100644
--- a/tempest/api/compute/servers/test_server_personality.py
+++ b/tempest/api/compute/servers/test_server_personality.py
@@ -13,7 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import base64
+from oslo_serialization import base64
 
 from tempest.api.compute import base
 from tempest.common.utils.linux import remote_client
@@ -55,7 +55,7 @@
         file_contents = 'This is a test file.'
         file_path = '/test.txt'
         personality = [{'path': file_path,
-                        'contents': base64.b64encode(file_contents)}]
+                        'contents': base64.encode_as_text(file_contents)}]
         password = data_utils.rand_password()
         created_server = self.create_test_server(personality=personality,
                                                  adminPass=password,
@@ -79,7 +79,7 @@
         server_id = server['id']
         file_contents = 'Test server rebuild.'
         personality = [{'path': 'rebuild.txt',
-                        'contents': base64.b64encode(file_contents)}]
+                        'contents': base64.encode_as_text(file_contents)}]
         rebuilt_server = self.client.rebuild_server(server_id,
                                                     self.image_ref_alt,
                                                     personality=personality)
@@ -100,7 +100,8 @@
         for i in range(0, int(max_file_limit) + 1):
             path = 'etc/test' + str(i) + '.txt'
             personality.append({'path': path,
-                                'contents': base64.b64encode(file_contents)})
+                                'contents': base64.encode_as_text(
+                                    file_contents)})
         # A 403 Forbidden or 413 Overlimit (old behaviour) exception
         # will be raised when out of quota
         self.assertRaises((lib_exc.Forbidden, lib_exc.OverLimit),
@@ -120,7 +121,7 @@
             path = '/etc/test' + str(i) + '.txt'
             person.append({
                 'path': path,
-                'contents': base64.b64encode(file_contents),
+                'contents': base64.encode_as_text(file_contents),
             })
         password = data_utils.rand_password()
         created_server = self.create_test_server(personality=person,
diff --git a/tempest/api/compute/servers/test_servers_negative.py b/tempest/api/compute/servers/test_servers_negative.py
index 2304cb7..89be3f3 100755
--- a/tempest/api/compute/servers/test_servers_negative.py
+++ b/tempest/api/compute/servers/test_servers_negative.py
@@ -302,7 +302,7 @@
         # Pass a server ID that exceeds length limit to delete server
 
         self.assertRaises(lib_exc.NotFound, self.client.delete_server,
-                          sys.maxint + 1)
+                          sys.maxsize + 1)
 
     @test.attr(type=['negative'])
     @test.idempotent_id('c5fa6041-80cd-483b-aa6d-4e45f19d093c')
diff --git a/tempest/api/identity/admin/v2/test_roles.py b/tempest/api/identity/admin/v2/test_roles.py
index 380920f..d284aac 100644
--- a/tempest/api/identity/admin/v2/test_roles.py
+++ b/tempest/api/identity/admin/v2/test_roles.py
@@ -13,8 +13,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from six import moves
-
 from tempest.api.identity import base
 from tempest.common.utils import data_utils
 from tempest.lib.common.utils import test_utils
@@ -27,7 +25,7 @@
     def resource_setup(cls):
         super(RolesTestJSON, cls).resource_setup()
         cls.roles = list()
-        for _ in moves.xrange(5):
+        for _ in range(5):
             role_name = data_utils.rand_name(name='role')
             role = cls.roles_client.create_role(name=role_name)['role']
             cls.roles.append(role)
diff --git a/tempest/api/identity/admin/v2/test_services.py b/tempest/api/identity/admin/v2/test_services.py
index 94291f8..3ed51f0 100644
--- a/tempest/api/identity/admin/v2/test_services.py
+++ b/tempest/api/identity/admin/v2/test_services.py
@@ -13,8 +13,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from six import moves
-
 from tempest.api.identity import base
 from tempest.common.utils import data_utils
 from tempest.lib import exceptions as lib_exc
@@ -84,7 +82,7 @@
     def test_list_services(self):
         # Create, List, Verify and Delete Services
         services = []
-        for _ in moves.xrange(3):
+        for _ in range(3):
             name = data_utils.rand_name('service')
             s_type = data_utils.rand_name('type')
             description = data_utils.rand_name('description')
diff --git a/tempest/api/identity/admin/v2/test_tenants.py b/tempest/api/identity/admin/v2/test_tenants.py
index 4faf184..f4fad53 100644
--- a/tempest/api/identity/admin/v2/test_tenants.py
+++ b/tempest/api/identity/admin/v2/test_tenants.py
@@ -13,8 +13,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from six import moves
-
 from tempest.api.identity import base
 from tempest.common.utils import data_utils
 from tempest.lib.common.utils import test_utils
@@ -27,7 +25,7 @@
     def test_tenant_list_delete(self):
         # Create several tenants and delete them
         tenants = []
-        for _ in moves.xrange(3):
+        for _ in range(3):
             tenant_name = data_utils.rand_name(name='tenant-new')
             tenant = self.tenants_client.create_tenant(
                 name=tenant_name)['tenant']
diff --git a/tempest/api/identity/admin/v3/test_groups.py b/tempest/api/identity/admin/v3/test_groups.py
index 48e5f02..3cbcc1f 100644
--- a/tempest/api/identity/admin/v3/test_groups.py
+++ b/tempest/api/identity/admin/v3/test_groups.py
@@ -91,7 +91,8 @@
 
         # list users in group
         group_users = self.groups_client.list_group_users(group['id'])['users']
-        self.assertEqual(sorted(users), sorted(group_users))
+        self.assertEqual(sorted(users, key=lambda k: k['name']),
+                         sorted(group_users, key=lambda k: k['name']))
         # check and delete user in group
         for user in users:
             self.groups_client.check_group_user_existence(
@@ -118,7 +119,8 @@
             self.groups_client.add_group_user(group['id'], user['id'])
         # list groups which user belongs to
         user_groups = self.users_client.list_user_groups(user['id'])['groups']
-        self.assertEqual(sorted(groups), sorted(user_groups))
+        self.assertEqual(sorted(groups, key=lambda k: k['name']),
+                         sorted(user_groups, key=lambda k: k['name']))
         self.assertEqual(2, len(user_groups))
 
     @test.idempotent_id('cc9a57a5-a9ed-4f2d-a29f-4f979a06ec71')
diff --git a/tempest/api/image/admin/v2/test_images.py b/tempest/api/image/admin/v2/test_images.py
index 80da7a1..c719b7a 100644
--- a/tempest/api/image/admin/v2/test_images.py
+++ b/tempest/api/image/admin/v2/test_images.py
@@ -13,7 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from six import moves
+import six
 import testtools
 
 from tempest.api.image import base
@@ -42,7 +42,7 @@
         self.addCleanup(self.client.delete_image, image_id)
         # upload an image file
         content = data_utils.random_bytes()
-        image_file = moves.cStringIO(content)
+        image_file = six.BytesIO(content)
         self.client.store_image_file(image_id, image_file)
         # deactivate image
         self.admin_client.deactivate_image(image_id)
diff --git a/tempest/api/image/base.py b/tempest/api/image/base.py
index e7a46b0..f74f97b 100755
--- a/tempest/api/image/base.py
+++ b/tempest/api/image/base.py
@@ -12,7 +12,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from six import moves
+import six
 
 from tempest.common import image as common_image
 from tempest.common.utils import data_utils
@@ -118,7 +118,7 @@
         cls.alt_tenant_id = cls.alt_image_member_client.tenant_id
 
     def _create_image(self):
-        image_file = moves.cStringIO(data_utils.random_bytes())
+        image_file = six.BytesIO(data_utils.random_bytes())
         image = self.create_image(container_format='bare',
                                   disk_format='raw',
                                   is_public=False,
diff --git a/tempest/api/image/v1/test_images.py b/tempest/api/image/v1/test_images.py
index 694408d..712b34b 100644
--- a/tempest/api/image/v1/test_images.py
+++ b/tempest/api/image/v1/test_images.py
@@ -13,7 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from six import moves
+import six
 
 from tempest.api.image import base
 from tempest.common import image as common_image
@@ -63,7 +63,7 @@
             self.assertEqual(val, body.get('properties')[key])
 
         # Now try uploading an image file
-        image_file = moves.cStringIO(data_utils.random_bytes())
+        image_file = six.BytesIO(data_utils.random_bytes())
         body = self.client.update_image(image_id, data=image_file)['image']
         self.assertIn('size', body)
         self.assertEqual(1024, body.get('size'))
@@ -199,7 +199,7 @@
         Note that the size of the new image is a random number between
         1024 and 4096
         """
-        image_file = moves.cStringIO(data_utils.random_bytes(size))
+        image_file = six.BytesIO(data_utils.random_bytes(size))
         name = 'New Standard Image %s' % name
         image = cls.create_image(name=name,
                                  container_format=container_format,
@@ -294,7 +294,7 @@
                                disk_format, size):
         """Create a new standard image and return newly-registered image-id"""
 
-        image_file = moves.cStringIO(data_utils.random_bytes(size))
+        image_file = six.BytesIO(data_utils.random_bytes(size))
         name = 'New Standard Image %s' % name
         image = cls.create_image(name=name,
                                  container_format=container_format,
diff --git a/tempest/api/image/v2/test_images.py b/tempest/api/image/v2/test_images.py
index 42a4352..443e332 100644
--- a/tempest/api/image/v2/test_images.py
+++ b/tempest/api/image/v2/test_images.py
@@ -16,7 +16,7 @@
 
 import random
 
-from six import moves
+import six
 
 from oslo_log import log as logging
 from tempest.api.image import base
@@ -60,7 +60,7 @@
 
         # Now try uploading an image file
         file_content = data_utils.random_bytes()
-        image_file = moves.cStringIO(file_content)
+        image_file = six.BytesIO(file_content)
         self.client.store_image_file(image_id, image_file)
 
         # Now try to get image details
@@ -117,7 +117,7 @@
         image_id = body['id']
 
         # Now try uploading an image file
-        image_file = moves.cStringIO(data_utils.random_bytes())
+        image_file = six.BytesIO(data_utils.random_bytes())
         self.client.store_image_file(image_id, image_file)
 
         # Update Image
@@ -160,7 +160,7 @@
         1024 and 4096
         """
         size = random.randint(1024, 4096)
-        image_file = moves.cStringIO(data_utils.random_bytes(size))
+        image_file = six.BytesIO(data_utils.random_bytes(size))
         name = data_utils.rand_name('image')
         body = cls.create_image(name=name,
                                 container_format=container_format,
diff --git a/tempest/api/object_storage/test_account_services.py b/tempest/api/object_storage/test_account_services.py
index 9e9f08b..a0c0a5f 100644
--- a/tempest/api/object_storage/test_account_services.py
+++ b/tempest/api/object_storage/test_account_services.py
@@ -15,7 +15,6 @@
 
 import random
 
-from six import moves
 import testtools
 
 from tempest.api.object_storage import base
@@ -42,7 +41,7 @@
     @classmethod
     def resource_setup(cls):
         super(AccountTest, cls).resource_setup()
-        for i in moves.xrange(ord('a'), ord('f') + 1):
+        for i in range(ord('a'), ord('f') + 1):
             name = data_utils.rand_name(name='%s-' % chr(i))
             cls.container_client.create_container(name)
             cls.containers.append(name)
@@ -140,7 +139,8 @@
     @test.idempotent_id('5cfa4ab2-4373-48dd-a41f-a532b12b08b2')
     def test_list_containers_with_limit(self):
         # list containers one of them, half of them then all of them
-        for limit in (1, self.containers_count / 2, self.containers_count):
+        for limit in (1, self.containers_count // 2,
+                      self.containers_count):
             params = {'limit': limit}
             resp, container_list = \
                 self.account_client.list_account_containers(params=params)
@@ -161,12 +161,13 @@
 
         self.assertEqual(len(container_list), 0)
 
-        params = {'marker': self.containers[self.containers_count / 2]}
+        params = {'marker': self.containers[self.containers_count // 2]}
         resp, container_list = \
             self.account_client.list_account_containers(params=params)
         self.assertHeaders(resp, 'Account', 'GET')
 
-        self.assertEqual(len(container_list), self.containers_count / 2 - 1)
+        self.assertEqual(len(container_list),
+                         self.containers_count // 2 - 1)
 
     @test.idempotent_id('5ca164e4-7bde-43fa-bafb-913b53b9e786')
     def test_list_containers_with_end_marker(self):
@@ -180,11 +181,11 @@
         self.assertHeaders(resp, 'Account', 'GET')
         self.assertEqual(len(container_list), 0)
 
-        params = {'end_marker': self.containers[self.containers_count / 2]}
+        params = {'end_marker': self.containers[self.containers_count // 2]}
         resp, container_list = \
             self.account_client.list_account_containers(params=params)
         self.assertHeaders(resp, 'Account', 'GET')
-        self.assertEqual(len(container_list), self.containers_count / 2)
+        self.assertEqual(len(container_list), self.containers_count // 2)
 
     @test.idempotent_id('ac8502c2-d4e4-4f68-85a6-40befea2ef5e')
     def test_list_containers_with_marker_and_end_marker(self):
@@ -215,12 +216,12 @@
         # list containers combining limit and end_marker param
         limit = random.randint(1, self.containers_count)
         params = {'limit': limit,
-                  'end_marker': self.containers[self.containers_count / 2]}
+                  'end_marker': self.containers[self.containers_count // 2]}
         resp, container_list = self.account_client.list_account_containers(
             params=params)
         self.assertHeaders(resp, 'Account', 'GET')
         self.assertEqual(len(container_list),
-                         min(limit, self.containers_count / 2))
+                         min(limit, self.containers_count // 2))
 
     @test.idempotent_id('8cf98d9c-e3a0-4e44-971b-c87656fdddbd')
     def test_list_containers_with_limit_and_marker_and_end_marker(self):
diff --git a/tempest/api/object_storage/test_object_services.py b/tempest/api/object_storage/test_object_services.py
index a707ebb..919f695 100644
--- a/tempest/api/object_storage/test_object_services.py
+++ b/tempest/api/object_storage/test_object_services.py
@@ -47,9 +47,9 @@
         object_name = data_utils.rand_name(name='LObject')
         data = data_utils.arbitrary_string()
         segments = 10
-        data_segments = [data + str(i) for i in six.moves.xrange(segments)]
+        data_segments = [data + str(i) for i in range(segments)]
         # uploading segments
-        for i in six.moves.xrange(segments):
+        for i in range(segments):
             resp, _ = self.object_client.create_object_segments(
                 self.container_name, object_name, i, data_segments[i])
 
@@ -901,9 +901,9 @@
         object_name = data_utils.rand_name(name='LObject')
         data = data_utils.arbitrary_string()
         segments = 10
-        data_segments = [data + str(i) for i in six.moves.xrange(segments)]
+        data_segments = [data + str(i) for i in range(segments)]
         # uploading segments
-        for i in six.moves.xrange(segments):
+        for i in range(segments):
             resp, _ = self.object_client.create_object_segments(
                 self.container_name, object_name, i, data_segments[i])
         # creating a manifest file
diff --git a/tempest/api/volume/admin/test_volumes_backup.py b/tempest/api/volume/admin/test_volumes_backup.py
index f7013d8..a26052c 100755
--- a/tempest/api/volume/admin/test_volumes_backup.py
+++ b/tempest/api/volume/admin/test_volumes_backup.py
@@ -13,9 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import base64
-import six
-
+from oslo_serialization import base64
 from oslo_serialization import jsonutils as json
 
 from tempest.api.volume import base
@@ -46,13 +44,11 @@
         self.admin_backups_client.wait_for_resource_deletion(backup_id)
 
     def _decode_url(self, backup_url):
-        return json.loads(base64.decodestring(backup_url))
+        return json.loads(base64.decode_as_text(backup_url))
 
     def _encode_backup(self, backup):
         retval = json.dumps(backup)
-        if six.PY3:
-            retval = retval.encode('utf-8')
-        return base64.encodestring(retval)
+        return base64.encode_as_text(retval)
 
     def _modify_backup_url(self, backup_url, changes):
         backup = self._decode_url(backup_url)
diff --git a/tempest/api/volume/test_volumes_snapshots.py b/tempest/api/volume/test_volumes_snapshots.py
index 20c647a..97db333 100755
--- a/tempest/api/volume/test_volumes_snapshots.py
+++ b/tempest/api/volume/test_volumes_snapshots.py
@@ -36,7 +36,7 @@
         cls.name_field = cls.special_fields['name_field']
         cls.descrip_field = cls.special_fields['descrip_field']
         # Create 2 snapshots
-        for _ in xrange(2):
+        for _ in range(2):
             cls.create_snapshot(cls.volume_origin['id'])
 
     def _detach(self, volume_id):
diff --git a/tempest/cmd/verify_tempest_config.py b/tempest/cmd/verify_tempest_config.py
index 9947f2a..c36c9be 100644
--- a/tempest/cmd/verify_tempest_config.py
+++ b/tempest/cmd/verify_tempest_config.py
@@ -46,7 +46,7 @@
     conf_dir = os.environ.get('TEMPEST_CONFIG_DIR', default_config_dir)
     conf_file = os.environ.get('TEMPEST_CONFIG', default_config_file)
     path = os.path.join(conf_dir, conf_file)
-    fd = open(path, 'rw')
+    fd = open(path, 'r+')
     return fd
 
 
diff --git a/tempest/lib/common/utils/data_utils.py b/tempest/lib/common/utils/data_utils.py
index 6b6548e..70be40c 100644
--- a/tempest/lib/common/utils/data_utils.py
+++ b/tempest/lib/common/utils/data_utils.py
@@ -171,7 +171,7 @@
     :return: size randomly bytes
     :rtype: string
     """
-    return ''.join([chr(random.randint(0, 255))
+    return b''.join([six.int2byte(random.randint(0, 255))
                     for i in range(size)])
 
 
@@ -204,5 +204,5 @@
 # Courtesy of http://stackoverflow.com/a/312464
 def chunkify(sequence, chunksize):
     """Yield successive chunks from `sequence`."""
-    for i in six.moves.xrange(0, len(sequence), chunksize):
+    for i in range(0, len(sequence), chunksize):
         yield sequence[i:i + chunksize]
diff --git a/tempest/services/object_storage/object_client.py b/tempest/services/object_storage/object_client.py
index a7db30e..ec36fb7 100644
--- a/tempest/services/object_storage/object_client.py
+++ b/tempest/services/object_storage/object_client.py
@@ -195,7 +195,6 @@
 
         # Read the 100 status prior to sending the data
         response = conn.response_class(conn.sock,
-                                       strict=conn.strict,
                                        method=conn._method)
         _, status, _ = response._read_status()
 
diff --git a/tempest/stress/driver.py b/tempest/stress/driver.py
index 925d765..1e33e88 100644
--- a/tempest/stress/driver.py
+++ b/tempest/stress/driver.py
@@ -20,8 +20,6 @@
 from oslo_log import log as logging
 from oslo_utils import importutils
 import six
-from six import moves
-
 
 from tempest import clients
 from tempest.common import cred_client
@@ -142,7 +140,7 @@
             manager = admin_manager
         else:
             raise NotImplemented('Non admin tests are not supported')
-        for p_number in moves.xrange(test.get('threads', default_thread_num)):
+        for p_number in range(test.get('threads', default_thread_num)):
             if test.get('use_isolated_tenants', False):
                 username = data_utils.rand_name("stress_user")
                 tenant_name = data_utils.rand_name("stress_tenant")
diff --git a/tempest/tests/lib/common/utils/test_data_utils.py b/tempest/tests/lib/common/utils/test_data_utils.py
index 94a4847..4446e5c 100644
--- a/tempest/tests/lib/common/utils/test_data_utils.py
+++ b/tempest/tests/lib/common/utils/test_data_utils.py
@@ -125,13 +125,13 @@
 
     def test_random_bytes(self):
         actual = data_utils.random_bytes()  # default size=1024
-        self.assertIsInstance(actual, str)
-        self.assertRegex(actual, "^[\x00-\xFF]{1024}")
+        self.assertIsInstance(actual, bytes)
+        self.assertEqual(1024, len(actual))
         actual2 = data_utils.random_bytes()
         self.assertNotEqual(actual, actual2)
 
         actual = data_utils.random_bytes(size=2048)
-        self.assertRegex(actual, "^[\x00-\xFF]{2048}")
+        self.assertEqual(2048, len(actual))
 
     def test_get_ipv6_addr_by_EUI64(self):
         actual = data_utils.get_ipv6_addr_by_EUI64('2001:db8::',