diff --git a/openstackclient/identity/v3/limit.py b/openstackclient/identity/v3/limit.py
index 333078d036..7f2fe885d1 100644
--- a/openstackclient/identity/v3/limit.py
+++ b/openstackclient/identity/v3/limit.py
@@ -77,8 +77,7 @@ class CreateLimit(command.ShowOne):
         )
         region = None
         if parsed_args.region:
-            val = getattr(parsed_args, 'region', None)
-            if 'None' not in val:
+            if 'None' not in parsed_args.region:
                 # NOTE (vishakha): Due to bug #1799153 and for any another
                 # related case where GET resource API does not support the
                 # filter by name, osc_lib.utils.find_resource() method cannot
@@ -149,11 +148,7 @@ class ListLimit(command.Lister):
             )
         region = None
         if parsed_args.region:
-            region = utils.find_resource(
-                identity_client.regions, parsed_args.region
-            )
-            val = getattr(parsed_args, 'region', None)
-            if 'None' not in val:
+            if 'None' not in parsed_args.region:
                 # NOTE (vishakha): Due to bug #1799153 and for any another
                 # related case where GET resource API does not support the
                 # filter by name, osc_lib.utils.find_resource() method cannot
diff --git a/openstackclient/identity/v3/registered_limit.py b/openstackclient/identity/v3/registered_limit.py
index 630066f8ab..34ce2101f5 100644
--- a/openstackclient/identity/v3/registered_limit.py
+++ b/openstackclient/identity/v3/registered_limit.py
@@ -68,8 +68,7 @@ class CreateRegisteredLimit(command.ShowOne):
         )
         region = None
         if parsed_args.region:
-            val = getattr(parsed_args, 'region', None)
-            if 'None' not in val:
+            if 'None' not in parsed_args.region:
                 # NOTE (vishakha): Due to bug #1799153 and for any another
                 # related case where GET resource API does not support the
                 # filter by name, osc_lib.utils.find_resource() method cannot
@@ -175,8 +174,7 @@ class ListRegisteredLimit(command.Lister):
             )
         region = None
         if parsed_args.region:
-            val = getattr(parsed_args, 'region', None)
-            if 'None' not in val:
+            if 'None' not in parsed_args.region:
                 # NOTE (vishakha): Due to bug #1799153 and for any another
                 # related case where GET resource API does not support the
                 # filter by name, osc_lib.utils.find_resource() method cannot
@@ -280,8 +278,7 @@ class SetRegisteredLimit(command.ShowOne):
 
         region = None
         if parsed_args.region:
-            val = getattr(parsed_args, 'region', None)
-            if 'None' not in val:
+            if 'None' not in parsed_args.region:
                 # NOTE (vishakha): Due to bug #1799153 and for any another
                 # related case where GET resource API does not support the
                 # filter by name, osc_lib.utils.find_resource() method cannot
diff --git a/openstackclient/network/v2/port.py b/openstackclient/network/v2/port.py
index a16707ff71..8dbe60511a 100644
--- a/openstackclient/network/v2/port.py
+++ b/openstackclient/network/v2/port.py
@@ -17,6 +17,7 @@ import argparse
 import copy
 import json
 import logging
+import typing as ty
 
 from cliff import columns as cliff_columns
 from osc_lib.cli import format_columns
@@ -39,6 +40,8 @@ class AdminStateColumn(cliff_columns.FormattableColumn):
 
 
 class SubPortColumn(format_columns.ListDictColumn):
+    _value: ty.Any
+
     def _retrieve_subports(self):
         if isinstance(self._value, dict):
             self._value = self._value['sub_ports']
diff --git a/openstackclient/tests/functional/common/test_quota.py b/openstackclient/tests/functional/common/test_quota.py
index a2edc4259d..373b178c15 100644
--- a/openstackclient/tests/functional/common/test_quota.py
+++ b/openstackclient/tests/functional/common/test_quota.py
@@ -25,7 +25,7 @@ class QuotaTests(base.TestCase):
     test runs as these may run in parallel and otherwise step on each other.
     """
 
-    PROJECT_NAME = None
+    PROJECT_NAME: str
 
     @classmethod
     def setUpClass(cls):
diff --git a/openstackclient/tests/functional/compute/v2/common.py b/openstackclient/tests/functional/compute/v2/common.py
index 4ada4304cb..5892ee3a0b 100644
--- a/openstackclient/tests/functional/compute/v2/common.py
+++ b/openstackclient/tests/functional/compute/v2/common.py
@@ -22,9 +22,9 @@ from openstackclient.tests.functional import base
 class ComputeTestCase(base.TestCase):
     """Common functional test bits for Compute commands"""
 
-    flavor_name = None
-    image_name = None
-    network_arg = None
+    flavor_name: str
+    image_name: str
+    network_arg: str
 
     def setUp(self):
         """Select common resources"""
@@ -34,7 +34,7 @@ class ComputeTestCase(base.TestCase):
         self.network_arg = self.get_network()
 
     @classmethod
-    def get_flavor(cls):
+    def get_flavor(cls) -> str:
         # NOTE(rtheis): Get cirros256 or m1.tiny flavors since functional
         #               tests may create other flavors.
         flavors = cls.openstack("flavor list", parse_output=True)
@@ -43,10 +43,13 @@ class ComputeTestCase(base.TestCase):
             if flavor['Name'] in ['m1.tiny', 'cirros256']:
                 server_flavor = flavor['Name']
                 break
+
+        assert server_flavor is not None
+
         return server_flavor
 
     @classmethod
-    def get_image(cls):
+    def get_image(cls) -> str:
         # NOTE(rtheis): Get first Cirros image since functional tests may
         #               create other images.  Image may be named '-uec' or
         #               '-disk'.
@@ -59,10 +62,13 @@ class ComputeTestCase(base.TestCase):
             ):
                 server_image = image['Name']
                 break
+
+        assert server_image is not None
+
         return server_image
 
     @classmethod
-    def get_network(cls):
+    def get_network(cls) -> str:
         try:
             # NOTE(rtheis): Get private network since functional tests may
             #               create other networks.
diff --git a/openstackclient/tests/functional/network/v2/test_address_group.py b/openstackclient/tests/functional/network/v2/test_address_group.py
index 8146112a3c..6bc13c75d0 100644
--- a/openstackclient/tests/functional/network/v2/test_address_group.py
+++ b/openstackclient/tests/functional/network/v2/test_address_group.py
@@ -75,6 +75,10 @@ class AddressGroupTests(common.NetworkTests):
         self.assertNotEqual(admin_project_id, demo_project_id)
         self.assertEqual(admin_project_id, auth_project_id)
 
+        # type narrow
+        assert admin_project_id is not None
+        assert demo_project_id is not None
+
         name1 = uuid.uuid4().hex
         cmd_output = self.openstack(
             'address group create ' + name1,
diff --git a/openstackclient/tests/functional/network/v2/test_l3_conntrack_helper.py b/openstackclient/tests/functional/network/v2/test_l3_conntrack_helper.py
index 60ae6d5ffe..ab0cb53e8a 100644
--- a/openstackclient/tests/functional/network/v2/test_l3_conntrack_helper.py
+++ b/openstackclient/tests/functional/network/v2/test_l3_conntrack_helper.py
@@ -94,9 +94,14 @@ class L3ConntrackHelperTests(common.NetworkTests):
             self.assertIn(ct, expected_helpers)
 
     def test_l3_conntrack_helper_set_and_show(self):
-        helper = {'helper': 'tftp', 'protocol': 'udp', 'port': 69}
+        helper = 'tftp'
+        proto = 'udp'
+        port = 69
         router_id = self._create_router()
-        created_helper = self._create_helpers(router_id, [helper])[0]
+        created_helper = self._create_helpers(
+            router_id,
+            [{'helper': helper, 'protocol': proto, 'port': port}],
+        )[0]
         output = self.openstack(
             'network l3 conntrack helper show {router_id} {ct_id} '
             '-f json'.format(
@@ -105,16 +110,16 @@ class L3ConntrackHelperTests(common.NetworkTests):
             ),
             parse_output=True,
         )
-        self.assertEqual(helper['helper'], output['helper'])
-        self.assertEqual(helper['protocol'], output['protocol'])
-        self.assertEqual(helper['port'], output['port'])
+        self.assertEqual(port, output['port'])
+        self.assertEqual(helper, output['helper'])
+        self.assertEqual(proto, output['protocol'])
 
         raw_output = self.openstack(
             'network l3 conntrack helper set {router_id} {ct_id} '
             '--port {port} '.format(
                 router_id=router_id,
                 ct_id=created_helper['id'],
-                port=helper['port'] + 1,
+                port=port + 1,
             )
         )
         self.assertOutput('', raw_output)
@@ -127,6 +132,6 @@ class L3ConntrackHelperTests(common.NetworkTests):
             ),
             parse_output=True,
         )
-        self.assertEqual(helper['port'] + 1, output['port'])
-        self.assertEqual(helper['helper'], output['helper'])
-        self.assertEqual(helper['protocol'], output['protocol'])
+        self.assertEqual(port + 1, output['port'])
+        self.assertEqual(helper, output['helper'])
+        self.assertEqual(proto, output['protocol'])
diff --git a/openstackclient/tests/functional/network/v2/test_local_ip.py b/openstackclient/tests/functional/network/v2/test_local_ip.py
index a1553bf3c7..d092be084b 100644
--- a/openstackclient/tests/functional/network/v2/test_local_ip.py
+++ b/openstackclient/tests/functional/network/v2/test_local_ip.py
@@ -77,6 +77,10 @@ class LocalIPTests(common.NetworkTests):
         self.assertNotEqual(admin_project_id, demo_project_id)
         self.assertEqual(admin_project_id, auth_project_id)
 
+        # type narrow
+        assert admin_project_id is not None
+        assert demo_project_id is not None
+
         name1 = uuid.uuid4().hex
         cmd_output = self.openstack(
             'local ip create ' + name1,
diff --git a/openstackclient/tests/functional/network/v2/test_network_meter_rule.py b/openstackclient/tests/functional/network/v2/test_network_meter_rule.py
index 8258d58318..c80643e31d 100644
--- a/openstackclient/tests/functional/network/v2/test_network_meter_rule.py
+++ b/openstackclient/tests/functional/network/v2/test_network_meter_rule.py
@@ -22,8 +22,8 @@ from openstackclient.tests.functional.network.v2 import common
 class TestMeterRule(common.NetworkTests):
     """Functional tests for meter rule"""
 
-    METER_ID = None
-    METER_RULE_ID = None
+    METER_ID: str
+    METER_RULE_ID: str
 
     @classmethod
     def setUpClass(cls):
diff --git a/openstackclient/tests/functional/network/v2/test_network_rbac.py b/openstackclient/tests/functional/network/v2/test_network_rbac.py
index 657175a284..d09b6e9b4e 100644
--- a/openstackclient/tests/functional/network/v2/test_network_rbac.py
+++ b/openstackclient/tests/functional/network/v2/test_network_rbac.py
@@ -18,8 +18,8 @@ from openstackclient.tests.functional.network.v2 import common
 class NetworkRBACTests(common.NetworkTests):
     """Functional tests for network rbac"""
 
-    OBJECT_ID = None
-    ID = None
+    OBJECT_ID: str
+    ID: str
     HEADERS = ['ID']
     FIELDS = ['id']
 
diff --git a/openstackclient/tests/functional/network/v2/test_router.py b/openstackclient/tests/functional/network/v2/test_router.py
index 90708324b1..cc7c8b1b70 100644
--- a/openstackclient/tests/functional/network/v2/test_router.py
+++ b/openstackclient/tests/functional/network/v2/test_router.py
@@ -106,6 +106,10 @@ class RouterTests(common.NetworkTagTests):
         self.assertNotEqual(admin_project_id, demo_project_id)
         self.assertEqual(admin_project_id, auth_project_id)
 
+        # type narrow
+        assert admin_project_id is not None
+        assert demo_project_id is not None
+
         name1 = uuid.uuid4().hex
         name2 = uuid.uuid4().hex
         cmd_output = self.openstack(
diff --git a/openstackclient/tests/functional/network/v2/test_subnet_pool.py b/openstackclient/tests/functional/network/v2/test_subnet_pool.py
index 89eb6f0ed4..97d9f0b9d4 100644
--- a/openstackclient/tests/functional/network/v2/test_subnet_pool.py
+++ b/openstackclient/tests/functional/network/v2/test_subnet_pool.py
@@ -63,6 +63,10 @@ class SubnetPoolTests(common.NetworkTagTests):
         self.assertNotEqual(admin_project_id, demo_project_id)
         self.assertEqual(admin_project_id, auth_project_id)
 
+        # type narrow
+        assert admin_project_id is not None
+        assert demo_project_id is not None
+
         name1 = uuid.uuid4().hex
         name2 = uuid.uuid4().hex