diff --git a/tempest/api/image/v1/test_image_members.py b/tempest/api/image/v1/test_image_members.py
index bf2e510..5e2c8af 100644
--- a/tempest/api/image/v1/test_image_members.py
+++ b/tempest/api/image/v1/test_image_members.py
@@ -19,9 +19,11 @@
 
 
 class ImageMembersTest(base.BaseV1ImageMembersTest):
+    """Test image members"""
 
     @decorators.idempotent_id('1d6ef640-3a20-4c84-8710-d95828fdb6ad')
     def test_add_image_member(self):
+        """Test adding member for image"""
         image = self._create_image()
         self.image_member_client.create_image_member(image, self.alt_tenant_id)
         body = self.image_member_client.list_image_members(image)
@@ -33,6 +35,7 @@
 
     @decorators.idempotent_id('6a5328a5-80e8-4b82-bd32-6c061f128da9')
     def test_get_shared_images(self):
+        """Test getting shared images"""
         image = self._create_image()
         self.image_member_client.create_image_member(image, self.alt_tenant_id)
         share_image = self._create_image()
@@ -47,6 +50,7 @@
 
     @decorators.idempotent_id('a76a3191-8948-4b44-a9d6-4053e5f2b138')
     def test_remove_member(self):
+        """Test removing member from image"""
         image_id = self._create_image()
         self.image_member_client.create_image_member(image_id,
                                                      self.alt_tenant_id)
diff --git a/tempest/api/image/v1/test_image_members_negative.py b/tempest/api/image/v1/test_image_members_negative.py
index 2748bd5..4e3c27c 100644
--- a/tempest/api/image/v1/test_image_members_negative.py
+++ b/tempest/api/image/v1/test_image_members_negative.py
@@ -19,11 +19,12 @@
 
 
 class ImageMembersNegativeTest(base.BaseV1ImageMembersTest):
+    """Negative tests of image members"""
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('147a9536-18e3-45da-91ea-b037a028f364')
     def test_add_member_with_non_existing_image(self):
-        # Add member with non existing image.
+        """Add member with non existing image"""
         non_exist_image = data_utils.rand_uuid()
         self.assertRaises(lib_exc.NotFound,
                           self.image_member_client.create_image_member,
@@ -32,7 +33,7 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('e1559f05-b667-4f1b-a7af-518b52dc0c0f')
     def test_delete_member_with_non_existing_image(self):
-        # Delete member with non existing image.
+        """Delete member with non existing image"""
         non_exist_image = data_utils.rand_uuid()
         self.assertRaises(lib_exc.NotFound,
                           self.image_member_client.delete_image_member,
@@ -41,7 +42,7 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('f5720333-dd69-4194-bb76-d2f048addd56')
     def test_delete_member_with_non_existing_tenant(self):
-        # Delete member with non existing tenant.
+        """Delete member from image with non existing tenant"""
         image_id = self._create_image()
         non_exist_tenant = data_utils.rand_uuid_hex()
         self.assertRaises(lib_exc.NotFound,
@@ -51,7 +52,10 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('f25f89e4-0b6c-453b-a853-1f80b9d7ef26')
     def test_get_image_without_membership(self):
-        # Image is hidden from another tenants.
+        """Get image without membership
+
+        Image is hidden from another tenants.
+        """
         image_id = self._create_image()
         self.assertRaises(lib_exc.NotFound,
                           self.alt_img_cli.show_image,
diff --git a/tempest/api/image/v1/test_images.py b/tempest/api/image/v1/test_images.py
index 2432c8b..595717e 100644
--- a/tempest/api/image/v1/test_images.py
+++ b/tempest/api/image/v1/test_images.py
@@ -57,7 +57,7 @@
 
     @decorators.idempotent_id('3027f8e6-3492-4a11-8575-c3293017af4d')
     def test_register_then_upload(self):
-        # Register, then upload an image
+        """Register, then upload an image"""
         properties = {'prop1': 'val1'}
         container_format, disk_format = get_container_and_disk_format()
         image = self.create_image(name='New Name',
@@ -79,7 +79,7 @@
 
     @decorators.idempotent_id('69da74d9-68a9-404b-9664-ff7164ccb0f5')
     def test_register_remote_image(self):
-        # Register a new remote image
+        """Register a new remote image"""
         container_format, disk_format = get_container_and_disk_format()
         body = self.create_image(name='New Remote Image',
                                  container_format=container_format,
@@ -96,6 +96,7 @@
 
     @decorators.idempotent_id('6d0e13a7-515b-460c-b91f-9f4793f09816')
     def test_register_http_image(self):
+        """Register a new image from an http image path url"""
         container_format, disk_format = get_container_and_disk_format()
         image = self.create_image(name='New Http Image',
                                   container_format=container_format,
@@ -108,7 +109,7 @@
 
     @decorators.idempotent_id('05b19d55-140c-40d0-b36b-fafd774d421b')
     def test_register_image_with_min_ram(self):
-        # Register an image with min ram
+        """Register an image with min ram"""
         container_format, disk_format = get_container_and_disk_format()
         properties = {'prop1': 'val1'}
         body = self.create_image(name='New_image_with_min_ram',
@@ -213,7 +214,7 @@
 
     @decorators.idempotent_id('246178ab-3b33-4212-9a4b-a7fe8261794d')
     def test_index_no_params(self):
-        # Simple test to see all fixture images returned
+        """Simple test to see all fixture images returned"""
         images_list = self.client.list_images()['images']
         image_list = [image['id'] for image in images_list]
         for image_id in self.created_images:
@@ -221,6 +222,7 @@
 
     @decorators.idempotent_id('f1755589-63d6-4468-b098-589820eb4031')
     def test_index_disk_format(self):
+        """Test listing images by disk format"""
         images_list = self.client.list_images(
             disk_format=self.disk_format_alt)['images']
         for image in images_list:
@@ -232,6 +234,7 @@
 
     @decorators.idempotent_id('2143655d-96d9-4bec-9188-8674206b4b3b')
     def test_index_container_format(self):
+        """Test listing images by container format"""
         images_list = self.client.list_images(
             container_format=self.container_format)['images']
         for image in images_list:
@@ -243,6 +246,7 @@
 
     @decorators.idempotent_id('feb32ac6-22bb-4a16-afd8-9454bb714b14')
     def test_index_max_size(self):
+        """Test listing images by max size"""
         images_list = self.client.list_images(size_max=42)['images']
         for image in images_list:
             self.assertLessEqual(image['size'], 42)
@@ -252,6 +256,7 @@
 
     @decorators.idempotent_id('6ffc16d0-4cbf-4401-95c8-4ac63eac34d8')
     def test_index_min_size(self):
+        """Test listing images by min size"""
         images_list = self.client.list_images(size_min=142)['images']
         for image in images_list:
             self.assertGreaterEqual(image['size'], 142)
@@ -261,6 +266,7 @@
 
     @decorators.idempotent_id('e5dc26d9-9aa2-48dd-bda5-748e1445da98')
     def test_index_status_active_detail(self):
+        """Test listing active images sorting by size in descending order"""
         images_list = self.client.list_images(detail=True,
                                               status='active',
                                               sort_key='size',
@@ -274,6 +280,7 @@
 
     @decorators.idempotent_id('097af10a-bae8-4342-bff4-edf89969ed2a')
     def test_index_name(self):
+        """Test listing images by its name"""
         images_list = self.client.list_images(
             detail=True,
             name='New Remote Image dup')['images']
@@ -285,6 +292,8 @@
 
 
 class UpdateImageMetaTest(base.BaseV1ImageTest):
+    """Test image metadata"""
+
     @classmethod
     def resource_setup(cls):
         super(UpdateImageMetaTest, cls).resource_setup()
@@ -308,6 +317,7 @@
 
     @decorators.idempotent_id('01752c1c-0275-4de3-9e5b-876e44541928')
     def test_list_image_metadata(self):
+        """Test listing image metadata"""
         # All metadata key/value pairs for an image should be returned
         resp = self.client.check_image(self.image_id)
         resp_metadata = common_image.get_image_meta_from_headers(resp)
@@ -316,6 +326,7 @@
 
     @decorators.idempotent_id('d6d7649c-08ce-440d-9ea7-e3dda552f33c')
     def test_update_image_metadata(self):
+        """Test updating image metadata"""
         # The metadata for the image should match the updated values
         req_metadata = {'key1': 'alt1', 'key2': 'value2'}
         resp = self.client.check_image(self.image_id)
diff --git a/tempest/api/image/v1/test_images_negative.py b/tempest/api/image/v1/test_images_negative.py
index 690b8da..2af1288 100644
--- a/tempest/api/image/v1/test_images_negative.py
+++ b/tempest/api/image/v1/test_images_negative.py
@@ -26,7 +26,10 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('036ede36-6160-4463-8c01-c781eee6369d')
     def test_register_with_invalid_container_format(self):
-        # Negative tests for invalid data supplied to POST /images
+        """Create image with invalid container format
+
+        Negative tests for invalid data supplied to POST /images
+        """
         self.assertRaises(lib_exc.BadRequest, self.client.create_image,
                           headers={'x-image-meta-name': 'test',
                                    'x-image-meta-container_format': 'wrong',
@@ -35,6 +38,7 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('993face5-921d-4e84-aabf-c1bba4234a67')
     def test_register_with_invalid_disk_format(self):
+        """Create image with invalid disk format"""
         self.assertRaises(lib_exc.BadRequest, self.client.create_image,
                           headers={'x-image-meta-name': 'test',
                                    'x-image-meta-container_format': 'bare',
@@ -43,7 +47,7 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('ec652588-7e3c-4b67-a2f2-0fa96f57c8fc')
     def test_delete_non_existent_image(self):
-        # Return an error while trying to delete a non-existent image
+        """Return an error while trying to delete a non-existent image"""
 
         non_existent_image_id = data_utils.rand_uuid()
         self.assertRaises(lib_exc.NotFound, self.client.delete_image,
@@ -52,13 +56,13 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('04f72aa3-fcec-45a3-81a3-308ef7cc82bc')
     def test_delete_image_blank_id(self):
-        # Return an error while trying to delete an image with blank Id
+        """Return an error while trying to delete an image with blank Id"""
         self.assertRaises(lib_exc.NotFound, self.client.delete_image, '')
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('950e5054-a3c7-4dee-ada5-e576f1087abd')
     def test_delete_image_non_hex_string_id(self):
-        # Return an error while trying to delete an image with non hex id
+        """Return an error while trying to delete an image with non hex id"""
         invalid_image_id = data_utils.rand_uuid()[:-1] + "j"
         self.assertRaises(lib_exc.NotFound, self.client.delete_image,
                           invalid_image_id)
@@ -66,13 +70,13 @@
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('4ed757cd-450c-44b1-9fd1-c819748c650d')
     def test_delete_image_negative_image_id(self):
-        # Return an error while trying to delete an image with negative id
+        """Return an error while trying to delete an image with negative id"""
         self.assertRaises(lib_exc.NotFound, self.client.delete_image, -1)
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('a4a448ab-3db2-4d2d-b9b2-6a1271241dfe')
     def test_delete_image_id_over_character_limit(self):
-        # Return an error while trying to delete image with id over limit
+        """Return an error while trying to delete image with id over limit"""
         overlimit_image_id = data_utils.rand_uuid() + "1"
         self.assertRaises(lib_exc.NotFound, self.client.delete_image,
                           overlimit_image_id)
diff --git a/tempest/api/image/v2/test_images_metadefs_namespace_objects.py b/tempest/api/image/v2/test_images_metadefs_namespace_objects.py
index 80f8112..32b81b1 100644
--- a/tempest/api/image/v2/test_images_metadefs_namespace_objects.py
+++ b/tempest/api/image/v2/test_images_metadefs_namespace_objects.py
@@ -30,6 +30,7 @@
 
     @decorators.idempotent_id('b1a3775e-3b5c-4f6a-a3b4-1ba3574ae718')
     def test_create_update_delete_meta_namespace_objects(self):
+        """Test creating/updating/deleting image metadata namespace objects"""
         # Create a namespace
         namespace = self.create_namespace()
         # Create a namespace object
@@ -52,6 +53,7 @@
 
     @decorators.idempotent_id('a2a3615e-3b5c-3f6a-a2b1-1ba3574ae738')
     def test_list_meta_namespace_objects(self):
+        """Test listing image metadata namespace objects"""
         # Create a namespace object
         namespace = self.create_namespace()
         meta_namespace_object = self._create_namespace_object(namespace)
@@ -64,6 +66,7 @@
 
     @decorators.idempotent_id('b1a3674e-3b4c-3f6a-a3b4-1ba3573ca768')
     def test_show_meta_namespace_objects(self):
+        """Test showing image metadata namespace object"""
         # Create a namespace object
         namespace = self.create_namespace()
         namespace_object = self._create_namespace_object(namespace)
diff --git a/tempest/api/image/v2/test_images_metadefs_namespace_properties.py b/tempest/api/image/v2/test_images_metadefs_namespace_properties.py
index ed91726..1d4f0a6 100644
--- a/tempest/api/image/v2/test_images_metadefs_namespace_properties.py
+++ b/tempest/api/image/v2/test_images_metadefs_namespace_properties.py
@@ -20,6 +20,7 @@
 
     @decorators.idempotent_id('b1a3765e-3a5d-4f6d-a3a7-3ca3476ae768')
     def test_basic_meta_def_namespace_property(self):
+        """Test operations of image metadata definition namespace property"""
         # Get the available resource types and use one resource_type
         body = self.resource_types_client.list_resource_types()
         resource_name = body['resource_types'][0]['name']
diff --git a/tempest/api/image/v2/test_images_metadefs_namespace_tags.py b/tempest/api/image/v2/test_images_metadefs_namespace_tags.py
index 482e808..dc64185 100644
--- a/tempest/api/image/v2/test_images_metadefs_namespace_tags.py
+++ b/tempest/api/image/v2/test_images_metadefs_namespace_tags.py
@@ -43,6 +43,7 @@
 
     @decorators.idempotent_id('a2a3765e-3a6d-4f6d-a3a7-3cc3476aa876')
     def test_create_list_delete_namespace_tags(self):
+        """Test creating/listing/deleting image metadata namespace tags"""
         # Create a namespace
         namespace = self.create_namespace()
         self._create_namespace_tags(namespace)
@@ -62,6 +63,7 @@
 
     @decorators.idempotent_id('a2a3765e-1a2c-3f6d-a3a7-3cc3466ab875')
     def test_create_update_delete_tag(self):
+        """Test creating/updating/deleting image metadata namespace tag"""
         # Create a namespace
         namespace = self.create_namespace()
         self._create_namespace_tags(namespace)
diff --git a/tempest/api/image/v2/test_images_metadefs_namespaces.py b/tempest/api/image/v2/test_images_metadefs_namespaces.py
index f71b16c..502949f 100644
--- a/tempest/api/image/v2/test_images_metadefs_namespaces.py
+++ b/tempest/api/image/v2/test_images_metadefs_namespaces.py
@@ -25,6 +25,7 @@
 
     @decorators.idempotent_id('319b765e-7f3d-4b3d-8b37-3ca3876ee768')
     def test_basic_metadata_definition_namespaces(self):
+        """Test operations of image metadata definition namespaces"""
         # get the available resource types and use one resource_type
         body = self.resource_types_client.list_resource_types()
         resource_name = body['resource_types'][0]['name']
diff --git a/tempest/api/image/v2/test_images_metadefs_schema.py b/tempest/api/image/v2/test_images_metadefs_schema.py
index 95cc310..7dd36d2 100644
--- a/tempest/api/image/v2/test_images_metadefs_schema.py
+++ b/tempest/api/image/v2/test_images_metadefs_schema.py
@@ -18,64 +18,64 @@
 
 
 class MetadataSchemaTest(base.BaseV2ImageTest):
-    """Test to get metadata schema"""
+    """Test to get image metadata schema"""
 
     @decorators.idempotent_id('e9e44891-3cb8-3b40-a532-e0a39fea3dab')
     def test_get_metadata_namespace_schema(self):
-        # Test to get namespace schema
+        """Test to get image namespace schema"""
         body = self.schemas_client.show_schema("metadefs/namespace")
         self.assertEqual("namespace", body['name'])
 
     @decorators.idempotent_id('ffe44891-678b-3ba0-a3e2-e0a3967b3aeb')
     def test_get_metadata_namespaces_schema(self):
-        # Test to get namespaces schema
+        """Test to get image namespaces schema"""
         body = self.schemas_client.show_schema("metadefs/namespaces")
         self.assertEqual("namespaces", body['name'])
 
     @decorators.idempotent_id('fde34891-678b-3b40-ae32-e0a3e67b6beb')
     def test_get_metadata_resource_type_schema(self):
-        # Test to get resource_type schema
+        """Test to get image resource_type schema"""
         body = self.schemas_client.show_schema("metadefs/resource_type")
         self.assertEqual("resource_type_association", body['name'])
 
     @decorators.idempotent_id('dfe4a891-b38b-3bf0-a3b2-e03ee67b3a3a')
     def test_get_metadata_resources_types_schema(self):
-        # Test to get resource_types schema
+        """Test to get image resource_types schema"""
         body = self.schemas_client.show_schema("metadefs/resource_types")
         self.assertEqual("resource_type_associations", body['name'])
 
     @decorators.idempotent_id('dff4a891-b38b-3bf0-a3b2-e03ee67b3a3b')
     def test_get_metadata_object_schema(self):
-        # Test to get object schema
+        """Test to get image object schema"""
         body = self.schemas_client.show_schema("metadefs/object")
         self.assertEqual("object", body['name'])
 
     @decorators.idempotent_id('dee4a891-b38b-3bf0-a3b2-e03ee67b3a3c')
     def test_get_metadata_objects_schema(self):
-        # Test to get objects schema
+        """Test to get image objects schema"""
         body = self.schemas_client.show_schema("metadefs/objects")
         self.assertEqual("objects", body['name'])
 
     @decorators.idempotent_id('dae4a891-b38b-3bf0-a3b2-e03ee67b3a3d')
     def test_get_metadata_property_schema(self):
-        # Test to get property schema
+        """Test to get image property schema"""
         body = self.schemas_client.show_schema("metadefs/property")
         self.assertEqual("property", body['name'])
 
     @decorators.idempotent_id('dce4a891-b38b-3bf0-a3b2-e03ee67b3a3e')
     def test_get_metadata_properties_schema(self):
-        # Test to get properties schema
+        """Test to get image properties schema"""
         body = self.schemas_client.show_schema("metadefs/properties")
         self.assertEqual("properties", body['name'])
 
     @decorators.idempotent_id('dde4a891-b38b-3bf0-a3b2-e03ee67b3a3e')
     def test_get_metadata_tag_schema(self):
-        # Test to get tag schema
+        """Test to get image tag schema"""
         body = self.schemas_client.show_schema("metadefs/tag")
         self.assertEqual("tag", body['name'])
 
     @decorators.idempotent_id('cde4a891-b38b-3bf0-a3b2-e03ee67b3a3a')
     def test_get_metadata_tags_schema(self):
-        # Test to get tags schema
+        """Test to get image tags schema"""
         body = self.schemas_client.show_schema("metadefs/tags")
         self.assertEqual("tags", body['name'])