diff --git a/tempest/api/identity/admin/v2/test_services.py b/tempest/api/identity/admin/v2/test_services.py
index 03543ac..182b24c 100644
--- a/tempest/api/identity/admin/v2/test_services.py
+++ b/tempest/api/identity/admin/v2/test_services.py
@@ -20,6 +20,7 @@
 
 
 class ServicesTestJSON(base.BaseIdentityV2AdminTest):
+    """Test identity services via v2 API"""
 
     def _del_service(self, service_id):
         # Deleting the service created in this method
@@ -30,6 +31,7 @@
 
     @decorators.idempotent_id('84521085-c6e6-491c-9a08-ec9f70f90110')
     def test_create_get_delete_service(self):
+        """Test verifies the identity service create/get/delete via v2 API"""
         # GET Service
         # Creating a Service
         name = data_utils.rand_name('service')
@@ -64,7 +66,10 @@
 
     @decorators.idempotent_id('5d3252c8-e555-494b-a6c8-e11d7335da42')
     def test_create_service_without_description(self):
-        # Create a service only with name and type
+        """Test creating identity service without description via v2 API
+
+        Create a service only with name and type.
+        """
         name = data_utils.rand_name('service')
         s_type = data_utils.rand_name('type')
         service = self.services_client.create_service(
@@ -79,7 +84,7 @@
     @decorators.attr(type='smoke')
     @decorators.idempotent_id('34ea6489-012d-4a86-9038-1287cadd5eca')
     def test_list_services(self):
-        # Create, List, Verify and Delete Services
+        """Test Create/List/Verify/Delete of identity service via v2 API"""
         services = []
         for _ in range(3):
             name = data_utils.rand_name('service')
diff --git a/tempest/api/identity/admin/v2/test_tenants.py b/tempest/api/identity/admin/v2/test_tenants.py
index f68754e..5f73e1c 100644
--- a/tempest/api/identity/admin/v2/test_tenants.py
+++ b/tempest/api/identity/admin/v2/test_tenants.py
@@ -19,10 +19,14 @@
 
 
 class TenantsTestJSON(base.BaseIdentityV2AdminTest):
+    """Test identity tenants via v2 API"""
 
     @decorators.idempotent_id('16c6e05c-6112-4b0e-b83f-5e43f221b6b0')
     def test_tenant_list_delete(self):
-        # Create several tenants and delete them
+        """Test listing and deleting tenants via v2 API
+
+        Create several tenants and delete them
+        """
         tenants = []
         for _ in range(3):
             tenant = self.setup_test_tenant()
@@ -41,7 +45,7 @@
 
     @decorators.idempotent_id('d25e9f24-1310-4d29-b61b-d91299c21d6d')
     def test_tenant_create_with_description(self):
-        # Create tenant with a description
+        """Test creating tenant with a description via v2 API"""
         tenant_desc = data_utils.rand_name(name='desc')
         tenant = self.setup_test_tenant(description=tenant_desc)
         tenant_id = tenant['id']
@@ -56,7 +60,7 @@
 
     @decorators.idempotent_id('670bdddc-1cd7-41c7-b8e2-751cfb67df50')
     def test_tenant_create_enabled(self):
-        # Create a tenant that is enabled
+        """Test creating a tenant that is enabled via v2 API"""
         tenant = self.setup_test_tenant(enabled=True)
         tenant_id = tenant['id']
         self.assertTrue(tenant['enabled'], 'Enable should be True in response')
@@ -66,7 +70,7 @@
 
     @decorators.idempotent_id('3be22093-b30f-499d-b772-38340e5e16fb')
     def test_tenant_create_not_enabled(self):
-        # Create a tenant that is not enabled
+        """Test creating a tenant that is not enabled via v2 API"""
         tenant = self.setup_test_tenant(enabled=False)
         tenant_id = tenant['id']
         self.assertFalse(tenant['enabled'],
@@ -78,7 +82,7 @@
 
     @decorators.idempotent_id('781f2266-d128-47f3-8bdb-f70970add238')
     def test_tenant_update_name(self):
-        # Update name attribute of a tenant
+        """Test updating name attribute of a tenant via v2 API"""
         t_name1 = data_utils.rand_name(name='tenant')
         tenant = self.setup_test_tenant(name=t_name1)
         t_id = tenant['id']
@@ -100,7 +104,7 @@
 
     @decorators.idempotent_id('859fcfe1-3a03-41ef-86f9-b19a47d1cd87')
     def test_tenant_update_desc(self):
-        # Update description attribute of a tenant
+        """Test updating description attribute of a tenant via v2 API"""
         t_desc = data_utils.rand_name(name='desc')
         tenant = self.setup_test_tenant(description=t_desc)
         t_id = tenant['id']
@@ -123,7 +127,7 @@
 
     @decorators.idempotent_id('8fc8981f-f12d-4c66-9972-2bdcf2bc2e1a')
     def test_tenant_update_enable(self):
-        # Update the enabled attribute of a tenant
+        """Test updating the enabled attribute of a tenant via v2 API"""
         t_en = False
         tenant = self.setup_test_tenant(enabled=t_en)
         t_id = tenant['id']
diff --git a/tempest/api/identity/admin/v2/test_users_negative.py b/tempest/api/identity/admin/v2/test_users_negative.py
index 4f47e41..eda1fdd 100644
--- a/tempest/api/identity/admin/v2/test_users_negative.py
+++ b/tempest/api/identity/admin/v2/test_users_negative.py
@@ -20,6 +20,7 @@
 
 
 class UsersNegativeTestJSON(base.BaseIdentityV2AdminTest):
+    """Negative tests of identity users via v2 API"""
 
     @classmethod
     def resource_setup(cls):
@@ -31,7 +32,7 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('60a1f5fa-5744-4cdf-82bf-60b7de2d29a4')
     def test_create_user_by_unauthorized_user(self):
-        # Non-administrator should not be authorized to create a user
+        """Non-admin should not be authorized to create a user via v2 API"""
         tenant = self.setup_test_tenant()
         self.assertRaises(lib_exc.Forbidden,
                           self.non_admin_users_client.create_user,
@@ -42,7 +43,7 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('d80d0c2f-4514-4d1e-806d-0930dfc5a187')
     def test_create_user_with_empty_name(self):
-        # User with an empty name should not be created
+        """User with an empty name should not be created via v2 API"""
         tenant = self.setup_test_tenant()
         self.assertRaises(lib_exc.BadRequest, self.users_client.create_user,
                           name='', password=self.alt_password,
@@ -52,7 +53,7 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('7704b4f3-3b75-4b82-87cc-931d41c8f780')
     def test_create_user_with_name_length_over_255(self):
-        # Length of user name filed should be restricted to 255 characters
+        """Length of user name should not exceed 255 via v2 API"""
         tenant = self.setup_test_tenant()
         self.assertRaises(lib_exc.BadRequest, self.users_client.create_user,
                           name='a' * 256, password=self.alt_password,
@@ -62,7 +63,7 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('57ae8558-120c-4723-9308-3751474e7ecf')
     def test_create_user_with_duplicate_name(self):
-        # Duplicate user should not be created
+        """Duplicate user should not be created via v2 API"""
         password = data_utils.rand_password()
         user = self.setup_test_user(password)
         tenant = self.tenants_client.show_tenant(user['tenantId'])['tenant']
@@ -75,7 +76,7 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('0132cc22-7c4f-42e1-9e50-ac6aad31d59a')
     def test_create_user_for_non_existent_tenant(self):
-        # Attempt to create a user in a non-existent tenant should fail
+        """Creating a user in a non-existent tenant via v2 API should fail"""
         self.assertRaises(lib_exc.NotFound, self.users_client.create_user,
                           name=self.alt_user,
                           password=self.alt_password,
@@ -85,7 +86,7 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('55bbb103-d1ae-437b-989b-bcdf8175c1f4')
     def test_create_user_request_without_a_token(self):
-        # Request to create a user without a valid token should fail
+        """Creating a user without a valid token via v2 API should fail"""
         tenant = self.setup_test_tenant()
         # Get the token of the current client
         token = self.client.auth_provider.get_token()
@@ -103,7 +104,7 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('23a2f3da-4a1a-41da-abdd-632328a861ad')
     def test_create_user_with_enabled_non_bool(self):
-        # Attempt to create a user with valid enabled para should fail
+        """Creating a user with invalid enabled para via v2 API should fail"""
         tenant = self.setup_test_tenant()
         name = data_utils.rand_name('test_user')
         self.assertRaises(lib_exc.BadRequest, self.users_client.create_user,
@@ -114,7 +115,7 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('3d07e294-27a0-4144-b780-a2a1bf6fee19')
     def test_update_user_for_non_existent_user(self):
-        # Attempt to update a user non-existent user should fail
+        """Updating a non-existent user via v2 API should fail"""
         user_name = data_utils.rand_name('user')
         non_existent_id = data_utils.rand_uuid()
         self.assertRaises(lib_exc.NotFound, self.users_client.update_user,
@@ -123,7 +124,7 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('3cc2a64b-83aa-4b02-88f0-d6ab737c4466')
     def test_update_user_request_without_a_token(self):
-        # Request to update a user without a valid token should fail
+        """Updating a user without a valid token via v2 API should fail"""
 
         # Get the token of the current client
         token = self.client.auth_provider.get_token()
@@ -139,7 +140,7 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('424868d5-18a7-43e1-8903-a64f95ee3aac')
     def test_update_user_by_unauthorized_user(self):
-        # Non-administrator should not be authorized to update user
+        """Non-admin should not be authorized to update user via v2 API"""
         self.assertRaises(lib_exc.Forbidden,
                           self.non_admin_users_client.update_user,
                           self.alt_user)
@@ -147,7 +148,7 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('d45195d5-33ed-41b9-a452-7d0d6a00f6e9')
     def test_delete_users_by_unauthorized_user(self):
-        # Non-administrator user should not be authorized to delete a user
+        """Non-admin should not be authorized to delete a user via v2 API"""
         user = self.setup_test_user()
         self.assertRaises(lib_exc.Forbidden,
                           self.non_admin_users_client.delete_user,
@@ -156,14 +157,14 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('7cc82f7e-9998-4f89-abae-23df36495867')
     def test_delete_non_existent_user(self):
-        # Attempt to delete a non-existent user should fail
+        """Attempt to delete a non-existent user via v2 API should fail"""
         self.assertRaises(lib_exc.NotFound, self.users_client.delete_user,
                           'junk12345123')
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('57fe1df8-0aa7-46c0-ae9f-c2e785c7504a')
     def test_delete_user_request_without_a_token(self):
-        # Request to delete a user without a valid token should fail
+        """Deleting a user without a valid token via v2 API should fail"""
 
         # Get the token of the current client
         token = self.client.auth_provider.get_token()
@@ -179,7 +180,7 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('593a4981-f6d4-460a-99a1-57a78bf20829')
     def test_authentication_for_disabled_user(self):
-        # Disabled user's token should not get authenticated
+        """Disabled user's token should not get authenticated via v2 API"""
         password = data_utils.rand_password()
         user = self.setup_test_user(password)
         tenant = self.tenants_client.show_tenant(user['tenantId'])['tenant']
@@ -192,7 +193,11 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('440a7a8d-9328-4b7b-83e0-d717010495e4')
     def test_authentication_when_tenant_is_disabled(self):
-        # User's token for a disabled tenant should not be authenticated
+        """Test User's token for a disabled tenant via v2 API
+
+        User's token for a disabled tenant should not be authenticated via
+        v2 API.
+        """
         password = data_utils.rand_password()
         user = self.setup_test_user(password)
         tenant = self.tenants_client.show_tenant(user['tenantId'])['tenant']
@@ -205,7 +210,11 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('921f1ad6-7907-40b8-853f-637e7ee52178')
     def test_authentication_with_invalid_tenant(self):
-        # User's token for an invalid tenant should not be authenticated
+        """Test User's token for an invalid tenant via v2 API
+
+        User's token for an invalid tenant should not be authenticated via V2
+        API.
+        """
         password = data_utils.rand_password()
         user = self.setup_test_user(password)
         self.assertRaises(lib_exc.Unauthorized, self.token_client.auth,
@@ -216,7 +225,7 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('bde9aecd-3b1c-4079-858f-beb5deaa5b5e')
     def test_authentication_with_invalid_username(self):
-        # Non-existent user's token should not get authenticated
+        """Non-existent user's token should not get authorized via v2 API"""
         password = data_utils.rand_password()
         user = self.setup_test_user(password)
         tenant = self.tenants_client.show_tenant(user['tenantId'])['tenant']
@@ -226,7 +235,11 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('d5308b33-3574-43c3-8d87-1c090c5e1eca')
     def test_authentication_with_invalid_password(self):
-        # User's token with invalid password should not be authenticated
+        """Test User's token with invalid password via v2 API
+
+        User's token with invalid password should not be authenticated via V2
+        API.
+        """
         user = self.setup_test_user()
         tenant = self.tenants_client.show_tenant(user['tenantId'])['tenant']
         self.assertRaises(lib_exc.Unauthorized, self.token_client.auth,
@@ -235,14 +248,14 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('284192ce-fb7c-4909-a63b-9a502e0ddd11')
     def test_get_users_by_unauthorized_user(self):
-        # Non-administrator user should not be authorized to get user list
+        """Non-admin should not be authorized to get user list via v2 API"""
         self.assertRaises(lib_exc.Forbidden,
                           self.non_admin_users_client.list_users)
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('a73591ec-1903-4ffe-be42-282b39fefc9d')
     def test_get_users_request_without_token(self):
-        # Request to get list of users without a valid token should fail
+        """Listing users without a valid token via v2 API should fail"""
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
 
@@ -254,8 +267,7 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('f5d39046-fc5f-425c-b29e-bac2632da28e')
     def test_list_users_with_invalid_tenant(self):
-        # Should not be able to return a list of all
-        # users for a non-existent tenant
+        """Listing users for a non-existent tenant via v2 API should fail"""
         # Assign invalid tenant ids
         invalid_id = list()
         invalid_id.append(data_utils.rand_name('999'))
diff --git a/tempest/api/identity/admin/v3/test_domains.py b/tempest/api/identity/admin/v3/test_domains.py
index 07175f4..32ccb9e 100644
--- a/tempest/api/identity/admin/v3/test_domains.py
+++ b/tempest/api/identity/admin/v3/test_domains.py
@@ -24,6 +24,7 @@
 
 
 class DomainsTestJSON(base.BaseIdentityV3AdminTest):
+    """Test identity domains"""
 
     @classmethod
     def resource_setup(cls):
@@ -37,7 +38,7 @@
 
     @decorators.idempotent_id('8cf516ef-2114-48f1-907b-d32726c734d4')
     def test_list_domains(self):
-        # Test to list domains
+        """Test listing domains"""
         fetched_ids = list()
         # List and Verify Domains
         body = self.domains_client.list_domains()['domains']
@@ -49,7 +50,7 @@
 
     @decorators.idempotent_id('c6aee07b-4981-440c-bb0b-eb598f58ffe9')
     def test_list_domains_filter_by_name(self):
-        # List domains filtering by name
+        """Test listing domains filtering by name"""
         params = {'name': self.setup_domains[0]['name']}
         fetched_domains = self.domains_client.list_domains(
             **params)['domains']
@@ -61,7 +62,7 @@
 
     @decorators.idempotent_id('3fd19840-65c1-43f8-b48c-51bdd066dff9')
     def test_list_domains_filter_by_enabled(self):
-        # List domains filtering by enabled domains
+        """Test listing domains filtering by enabled domains"""
         params = {'enabled': True}
         fetched_domains = self.domains_client.list_domains(
             **params)['domains']
@@ -74,6 +75,7 @@
     @decorators.attr(type='smoke')
     @decorators.idempotent_id('f2f5b44a-82e8-4dad-8084-0661ea3b18cf')
     def test_create_update_delete_domain(self):
+        """Test creating, updating and deleting domain"""
         # Create domain
         d_name = data_utils.rand_name('domain')
         d_desc = data_utils.rand_name('domain-desc')
@@ -118,6 +120,7 @@
 
     @decorators.idempotent_id('d8d318b7-d1b3-4c37-94c5-3c5ba0b121ea')
     def test_domain_delete_cascades_content(self):
+        """Test deleting domain will delete its associated contents"""
         # Create a domain with a user and a group in it
         domain = self.setup_test_domain()
         user = self.create_test_user(domain_id=domain['id'])
@@ -134,6 +137,7 @@
 
     @decorators.idempotent_id('036df86e-bb5d-42c0-a7c2-66b9db3a6046')
     def test_create_domain_with_disabled_status(self):
+        """Test creating domain with disabled status"""
         # Create domain with enabled status as false
         d_name = data_utils.rand_name('domain')
         d_desc = data_utils.rand_name('domain-desc')
@@ -146,6 +150,7 @@
 
     @decorators.idempotent_id('2abf8764-309a-4fa9-bc58-201b799817ad')
     def test_create_domain_without_description(self):
+        """Test creating domain without description"""
         # Create domain only with name
         d_name = data_utils.rand_name('domain')
         domain = self.domains_client.create_domain(name=d_name)['domain']
diff --git a/tempest/api/identity/admin/v3/test_domains_negative.py b/tempest/api/identity/admin/v3/test_domains_negative.py
index b3c68fb..c90206d 100644
--- a/tempest/api/identity/admin/v3/test_domains_negative.py
+++ b/tempest/api/identity/admin/v3/test_domains_negative.py
@@ -20,6 +20,8 @@
 
 
 class DomainsNegativeTestJSON(base.BaseIdentityV3AdminTest):
+    """Negative tests of identity domains"""
+
     # NOTE: force_tenant_isolation is true in the base class by default but
     # overridden to false here to allow test execution for clouds using the
     # pre-provisioned credentials provider.
@@ -28,6 +30,7 @@
     @decorators.attr(type=['negative', 'gate'])
     @decorators.idempotent_id('1f3fbff5-4e44-400d-9ca1-d953f05f609b')
     def test_delete_active_domain(self):
+        """Test deleting active domain should fail"""
         domain = self.create_domain()
         domain_id = domain['id']
 
@@ -40,14 +43,20 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('9018461d-7d24-408d-b3fe-ae37e8cd5c9e')
     def test_create_domain_with_empty_name(self):
-        # Domain name should not be empty
+        """Test creating domain with empty name should fail
+
+        Domain name should not be empty
+        """
         self.assertRaises(lib_exc.BadRequest,
                           self.domains_client.create_domain, name='')
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('37b1bbf2-d664-4785-9a11-333438586eae')
     def test_create_domain_with_name_length_over_64(self):
-        # Domain name length should not ne greater than 64 characters
+        """Test creating domain with name over length
+
+        Domain name length should not ne greater than 64 characters
+        """
         d_name = 'a' * 65
         self.assertRaises(lib_exc.BadRequest,
                           self.domains_client.create_domain,
@@ -56,13 +65,14 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('43781c07-764f-4cf2-a405-953c1916f605')
     def test_delete_non_existent_domain(self):
-        # Attempt to delete a non existent domain should fail
+        """Test attempting to delete a non existent domain should fail"""
         self.assertRaises(lib_exc.NotFound, self.domains_client.delete_domain,
                           data_utils.rand_uuid_hex())
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('e6f9e4a2-4f36-4be8-bdbc-4e199ae29427')
     def test_domain_create_duplicate(self):
+        """Test creating domain with duplicate name should fail"""
         domain_name = data_utils.rand_name('domain-dup')
         domain = self.domains_client.create_domain(name=domain_name)['domain']
         domain_id = domain['id']
diff --git a/tempest/api/identity/admin/v3/test_endpoints.py b/tempest/api/identity/admin/v3/test_endpoints.py
index 366d6a0..0199d73 100644
--- a/tempest/api/identity/admin/v3/test_endpoints.py
+++ b/tempest/api/identity/admin/v3/test_endpoints.py
@@ -20,6 +20,8 @@
 
 
 class EndPointsTestJSON(base.BaseIdentityV3AdminTest):
+    """Test keystone endpoints"""
+
     # NOTE: force_tenant_isolation is true in the base class by default but
     # overridden to false here to allow test execution for clouds using the
     # pre-provisioned credentials provider.
@@ -71,6 +73,7 @@
 
     @decorators.idempotent_id('c19ecf90-240e-4e23-9966-21cee3f6a618')
     def test_list_endpoints(self):
+        """Test listing keystone endpoints by filters"""
         # Get the list of all the endpoints.
         fetched_endpoints = self.client.list_endpoints()['endpoints']
         fetched_endpoint_ids = [e['id'] for e in fetched_endpoints]
@@ -111,6 +114,7 @@
 
     @decorators.idempotent_id('0e2446d2-c1fd-461b-a729-b9e73e3e3b37')
     def test_create_list_show_delete_endpoint(self):
+        """Test creating, listing, showing and deleting keystone endpoint"""
         region_name = data_utils.rand_name('region')
         url = data_utils.rand_url()
         interface = 'public'
@@ -152,6 +156,7 @@
     @decorators.attr(type='smoke')
     @decorators.idempotent_id('37e8f15e-ee7c-4657-a1e7-f6b61e375eff')
     def test_update_endpoint(self):
+        """Test updating keystone endpoint"""
         # NOTE(zhufl) Service2 should be created before endpoint_for_update
         # is created, because Service2 must be deleted after
         # endpoint_for_update is deleted, otherwise we will get a 404 error
diff --git a/tempest/api/identity/admin/v3/test_list_projects.py b/tempest/api/identity/admin/v3/test_list_projects.py
index cb8ea11..b33d8bd 100644
--- a/tempest/api/identity/admin/v3/test_list_projects.py
+++ b/tempest/api/identity/admin/v3/test_list_projects.py
@@ -40,6 +40,7 @@
 
 
 class ListProjectsTestJSON(BaseListProjectsTestJSON):
+    """Test listing projects"""
 
     @classmethod
     def resource_setup(cls):
@@ -65,13 +66,13 @@
 
     @decorators.idempotent_id('0fe7a334-675a-4509-b00e-1c4b95d5dae8')
     def test_list_projects_with_enabled(self):
-        # List the projects with enabled
+        """Test listing the projects with enabled"""
         self._list_projects_with_params(
             [self.p1], [self.p2, self.p3], {'enabled': False}, 'enabled')
 
     @decorators.idempotent_id('6edc66f5-2941-4a17-9526-4073311c1fac')
     def test_list_projects_with_parent(self):
-        # List projects with parent
+        """Test listing projects with parent"""
         params = {'parent_id': self.p3['parent_id']}
         fetched_projects = self.projects_client.list_projects(
             params)['projects']
@@ -81,6 +82,11 @@
 
 
 class ListProjectsStaticTestJSON(BaseListProjectsTestJSON):
+    """Test listing projects
+
+    These tests can be executed in clouds using the pre-provisioned users
+    """
+
     # NOTE: force_tenant_isolation is true in the base class by default but
     # overridden to false here to allow test execution for clouds using the
     # pre-provisioned credentials provider.
@@ -102,7 +108,7 @@
 
     @decorators.idempotent_id('1d830662-22ad-427c-8c3e-4ec854b0af44')
     def test_list_projects(self):
-        # List projects
+        """Test listing projects"""
         list_projects = self.projects_client.list_projects()['projects']
 
         for p in [self.p1, self.p2]:
@@ -112,13 +118,13 @@
 
     @decorators.idempotent_id('fa178524-4e6d-4925-907c-7ab9f42c7e26')
     def test_list_projects_with_name(self):
-        # List projects with name
+        """Test listing projects filtered by name"""
         self._list_projects_with_params(
             [self.p1], [self.p2], {'name': self.p1['name']}, 'name')
 
     @decorators.idempotent_id('fab13f3c-f6a6-4b9f-829b-d32fd44fdf10')
     def test_list_projects_with_domains(self):
-        # Verify project list filtered by domain
+        """Test listing projects filtered by domain"""
         key = 'domain_id'
         for p in [self.p1, self.p2]:
             params = {key: p[key]}
diff --git a/tempest/api/identity/admin/v3/test_projects.py b/tempest/api/identity/admin/v3/test_projects.py
index e46145d..be1216a 100644
--- a/tempest/api/identity/admin/v3/test_projects.py
+++ b/tempest/api/identity/admin/v3/test_projects.py
@@ -23,6 +23,8 @@
 
 
 class ProjectsTestJSON(base.BaseIdentityV3AdminTest):
+    """Test identity projects"""
+
     # NOTE: force_tenant_isolation is true in the base class by default but
     # overridden to false here to allow test execution for clouds using the
     # pre-provisioned credentials provider.
@@ -30,7 +32,7 @@
 
     @decorators.idempotent_id('0ecf465c-0dc4-4532-ab53-91ffeb74d12d')
     def test_project_create_with_description(self):
-        # Create project with a description
+        """Test creating project with a description"""
         project_desc = data_utils.rand_name('desc')
         project = self.setup_test_project(description=project_desc)
         project_id = project['id']
@@ -44,7 +46,7 @@
 
     @decorators.idempotent_id('5f50fe07-8166-430b-a882-3b2ee0abe26f')
     def test_project_create_with_domain(self):
-        # Create project with a domain
+        """Test creating project with a domain"""
         domain = self.setup_test_domain()
         project_name = data_utils.rand_name('project')
         project = self.setup_test_project(
@@ -58,7 +60,7 @@
 
     @decorators.idempotent_id('1854f9c0-70bc-4d11-a08a-1c789d339e3d')
     def test_project_create_with_parent(self):
-        # Create root project without providing a parent_id
+        """Test creating root project without providing a parent_id"""
         domain = self.setup_test_domain()
         domain_id = domain['id']
 
@@ -83,6 +85,7 @@
 
     @decorators.idempotent_id('a7eb9416-6f9b-4dbb-b71b-7f73aaef59d5')
     def test_create_is_domain_project(self):
+        """Test creating is_domain project"""
         project = self.setup_test_project(domain_id=None, is_domain=True)
         # To delete a domain, we need to disable it first
         self.addCleanup(self.projects_client.update_project, project['id'],
@@ -103,7 +106,7 @@
 
     @decorators.idempotent_id('1f66dc76-50cc-4741-a200-af984509e480')
     def test_project_create_enabled(self):
-        # Create a project that is enabled
+        """Test creating a project that is enabled"""
         project = self.setup_test_project(enabled=True)
         project_id = project['id']
         self.assertTrue(project['enabled'],
@@ -113,7 +116,7 @@
 
     @decorators.idempotent_id('78f96a9c-e0e0-4ee6-a3ba-fbf6dfd03207')
     def test_project_create_not_enabled(self):
-        # Create a project that is not enabled
+        """Test creating a project that is not enabled"""
         project = self.setup_test_project(enabled=False)
         self.assertFalse(project['enabled'],
                          'Enable should be False in response')
@@ -123,7 +126,7 @@
 
     @decorators.idempotent_id('f608f368-048c-496b-ad63-d286c26dab6b')
     def test_project_update_name(self):
-        # Update name attribute of a project
+        """Test updating name attribute of a project"""
         p_name1 = data_utils.rand_name('project')
         project = self.setup_test_project(name=p_name1)
 
@@ -144,7 +147,7 @@
 
     @decorators.idempotent_id('f138b715-255e-4a7d-871d-351e1ef2e153')
     def test_project_update_desc(self):
-        # Update description attribute of a project
+        """Test updating description attribute of a project"""
         p_desc = data_utils.rand_name('desc')
         project = self.setup_test_project(description=p_desc)
         resp1_desc = project['description']
@@ -164,7 +167,7 @@
 
     @decorators.idempotent_id('b6b25683-c97f-474d-a595-55d410b68100')
     def test_project_update_enable(self):
-        # Update the enabled attribute of a project
+        """Test updating the enabled attribute of a project"""
         p_en = False
         project = self.setup_test_project(enabled=p_en)
 
@@ -189,7 +192,7 @@
                       'immutable user source and solely '
                       'provides read-only access to users.')
     def test_associate_user_to_project(self):
-        # Associate a user to a project
+        """Test associating a user to a project"""
         # Create a Project
         project = self.setup_test_project()
 
@@ -215,6 +218,7 @@
 
     @decorators.idempotent_id('d1db68b6-aebe-4fa0-b79d-d724d2e21162')
     def test_project_get_equals_list(self):
+        """Test the result of getting project equals that of listing"""
         fields = ['parent_id', 'is_domain', 'description', 'links',
                   'name', 'enabled', 'domain_id', 'id', 'tags']
 
diff --git a/tempest/api/identity/admin/v3/test_projects_negative.py b/tempest/api/identity/admin/v3/test_projects_negative.py
index 12f1d4a..79e3d29 100644
--- a/tempest/api/identity/admin/v3/test_projects_negative.py
+++ b/tempest/api/identity/admin/v3/test_projects_negative.py
@@ -20,11 +20,12 @@
 
 
 class ProjectsNegativeTestJSON(base.BaseIdentityV3AdminTest):
+    """Negative tests of projects"""
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('8d68c012-89e0-4394-8d6b-ccd7196def97')
     def test_project_delete_by_unauthorized_user(self):
-        # Non-admin user should not be able to delete a project
+        """Non-admin user should not be able to delete a project"""
         project = self.setup_test_project()
         self.assertRaises(
             lib_exc.Forbidden, self.non_admin_projects_client.delete_project,
@@ -32,6 +33,11 @@
 
 
 class ProjectsNegativeStaticTestJSON(base.BaseIdentityV3AdminTest):
+    """Negative tests of projects
+
+    These tests can be executed in clouds using the pre-provisioned users
+    """
+
     # NOTE: force_tenant_isolation is true in the base class by default but
     # overridden to false here to allow test execution for clouds using the
     # pre-provisioned credentials provider.
@@ -40,14 +46,14 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('24c49279-45dd-4155-887a-cb738c2385aa')
     def test_list_projects_by_unauthorized_user(self):
-        # Non-admin user should not be able to list projects
+        """Non-admin user should not be able to list projects"""
         self.assertRaises(lib_exc.Forbidden,
                           self.non_admin_projects_client.list_projects)
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('874c3e84-d174-4348-a16b-8c01f599561b')
     def test_project_create_duplicate(self):
-        # Project names should be unique
+        """Project names should be unique"""
         project_name = data_utils.rand_name('project-dup')
         self.setup_test_project(name=project_name)
 
@@ -57,7 +63,7 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('8fba9de2-3e1f-4e77-812a-60cb68f8df13')
     def test_create_project_by_unauthorized_user(self):
-        # Non-admin user should not be authorized to create a project
+        """Non-admin user should not be authorized to create a project"""
         project_name = data_utils.rand_name('project')
         self.assertRaises(
             lib_exc.Forbidden, self.non_admin_projects_client.create_project,
@@ -66,14 +72,14 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('7828db17-95e5-475b-9432-9a51b4aa79a9')
     def test_create_project_with_empty_name(self):
-        # Project name should not be empty
+        """Project name should not be empty"""
         self.assertRaises(lib_exc.BadRequest,
                           self.projects_client.create_project, name='')
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('502b6ceb-b0c8-4422-bf53-f08fdb21e2f0')
     def test_create_projects_name_length_over_64(self):
-        # Project name length should not be greater than 64 characters
+        """Project name length should not be greater than 64 characters"""
         project_name = 'a' * 65
         self.assertRaises(lib_exc.BadRequest,
                           self.projects_client.create_project, project_name)
@@ -81,7 +87,7 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('7965b581-60c1-43b7-8169-95d4ab7fc6fb')
     def test_delete_non_existent_project(self):
-        # Attempt to delete a non existent project should fail
+        """Attempt to delete a non existent project should fail"""
         self.assertRaises(lib_exc.NotFound,
                           self.projects_client.delete_project,
                           data_utils.rand_uuid_hex())