style: quality fixes

course_discovery/apps/api/cache.py

@@ -167,5 +167,6 @@ def list(self, request, *args, **kwargs):
     def retrieve(self, request, *args, **kwargs):
         return super().retrieve(request, *args, **kwargs)
 
+
 def get_utm_source_request_cache_key(partner, user):
     return get_cache_key(partner=partner.id, user=user.id)

course_discovery/apps/api/serializers.py

@@ -147,6 +147,7 @@ def get_lms_course_url_for_archived(partner, course_key):
 
     return f'{lms_url}/courses/{course_key}/course/'
 
+
 @use_request_cache("utm_source_cache", get_utm_source_request_cache_key)
 def get_utm_source_for_user(partner, user):
     """

course_discovery/apps/api/utils.py

@@ -354,6 +354,7 @@ def push_to_studio(self, course_run, create=False, old_course_run_key=None, user
         else:
             self.update_course_run_details_in_studio(course_run)
 
+
 def use_request_cache(cache_name, key_func):
     def inner(fn):
         @functools.wraps(fn)

course_discovery/apps/api/v1/tests/test_views/test_courses.py

@@ -352,7 +352,7 @@ def test_list(self):
             response.data['results'],
             self.serialize_course(Course.objects.all(), many=True)
         )
-    
+
     def test_no_repeated_cache_calls_for_utm_calculation(self):
         """
         Test that utm source calculation is done only once per request, and not per
@@ -370,7 +370,7 @@ def test_no_repeated_cache_calls_for_utm_calculation(self):
         }) as mocked_api_access_request:
             with override_switch('use_company_name_as_utm_source_value', True):
                 url = reverse('api:v1:course-list')
-                response = self.client.get(url)
+                self.client.get(url)
                 mocked_api_access_request.assert_called_once()
 
     @pytest.mark.skip(reason="https://github.com/openedx/course-discovery/issues/4431")