diff --git a/openedx/core/djangoapps/debug/views.py b/openedx/core/djangoapps/debug/views.py
index 37531ce46b..3554e938a1 100644
--- a/openedx/core/djangoapps/debug/views.py
+++ b/openedx/core/djangoapps/debug/views.py
@@ -27,7 +27,7 @@ def show_reference_template(request, template):
     e.g. /template/ux/reference/index.html?name=Foo
     """
     try:
-        is_v1 = u'/v1/' in request.path
+        is_v1 = '/v1/' in request.path
         uses_bootstrap = not is_v1
         context = {
             'request': request,
@@ -46,7 +46,7 @@ def show_reference_template(request, template):
             PageLevelMessages.register_error_message(request, request.GET.get('error'))
 
         # Add some messages to the course skeleton pages
-        if u'course-skeleton.html' in request.path:
+        if 'course-skeleton.html' in request.path:
             PageLevelMessages.register_info_message(request, _('This is a test message'))
             PageLevelMessages.register_success_message(request, _('This is a success message'))
             PageLevelMessages.register_warning_message(request, _('This is a test warning'))
@@ -54,4 +54,4 @@ def show_reference_template(request, template):
 
         return render_to_response(template, context)
     except TemplateDoesNotExist:
-        return HttpResponseNotFound(u'Missing template {template}'.format(template=bleach.clean(template, strip=True)))
+        return HttpResponseNotFound('Missing template {template}'.format(template=bleach.clean(template, strip=True)))
diff --git a/openedx/core/djangoapps/demographics/admin.py b/openedx/core/djangoapps/demographics/admin.py
index 5085e0c04a..115581a7fb 100644
--- a/openedx/core/djangoapps/demographics/admin.py
+++ b/openedx/core/djangoapps/demographics/admin.py
@@ -15,7 +15,7 @@ class UserDemographicsAdmin(admin.ModelAdmin):
     readonly_fields = ('user',)
     search_fields = ('id', 'user__username')
 
-    class Meta(object):
+    class Meta:
         model = UserDemographics
 
 
diff --git a/openedx/core/djangoapps/demographics/models.py b/openedx/core/djangoapps/demographics/models.py
index 2aef94980b..2ed7980285 100644
--- a/openedx/core/djangoapps/demographics/models.py
+++ b/openedx/core/djangoapps/demographics/models.py
@@ -16,10 +16,10 @@ class UserDemographics(TimeStampedModel):
     show_call_to_action = models.BooleanField(default=True)
     history = HistoricalRecords(app='demographics')
 
-    class Meta(object):
+    class Meta:
         app_label = "demographics"
         verbose_name = "user demographic"
         verbose_name_plural = "user demographic"
 
     def __str__(self):
-        return 'UserDemographics for {}'.format(self.user)
+        return f'UserDemographics for {self.user}'
diff --git a/openedx/core/djangoapps/demographics/tests/factories.py b/openedx/core/djangoapps/demographics/tests/factories.py
index ddfdcf7698..9678eaec6d 100644
--- a/openedx/core/djangoapps/demographics/tests/factories.py
+++ b/openedx/core/djangoapps/demographics/tests/factories.py
@@ -12,5 +12,5 @@ class UserDemographicsFactory(factory.django.DjangoModelFactory):
     UserDemographics Factory
     """
 
-    class Meta(object):
+    class Meta:
         model = UserDemographics
diff --git a/openedx/core/djangoapps/demographics/tests/test_status.py b/openedx/core/djangoapps/demographics/tests/test_status.py
index 013ad71404..10918b61c2 100644
--- a/openedx/core/djangoapps/demographics/tests/test_status.py
+++ b/openedx/core/djangoapps/demographics/tests/test_status.py
@@ -1,7 +1,7 @@
 """
 Test status utilities
 """
-import mock
+from unittest import mock
 
 from django.conf import settings
 from pytest import mark
@@ -59,7 +59,7 @@ class TestShowDemographics(SharedModuleStoreTestCase):  # lint-amnesty, pylint:
 @mark.django_db
 class TestShowCallToAction(TestCase):  # lint-amnesty, pylint: disable=missing-class-docstring
     def setUp(self):
-        super(TestShowCallToAction, self).setUp()  # lint-amnesty, pylint: disable=super-with-arguments
+        super().setUp()
         self.user = UserFactory()
 
     def test_new_user(self):
diff --git a/openedx/core/djangoapps/discussions/models.py b/openedx/core/djangoapps/discussions/models.py
index f4e0067c4b..4d496ddd9d 100644
--- a/openedx/core/djangoapps/discussions/models.py
+++ b/openedx/core/djangoapps/discussions/models.py
@@ -23,7 +23,7 @@ from openedx.core.djangoapps.content.course_overviews.models import CourseOvervi
 log = logging.getLogger(__name__)
 
 
-def get_supported_providers() -> List[str]:
+def get_supported_providers() -> list[str]:
     """
     Return the list of supported discussion providers
 
@@ -96,7 +96,7 @@ class ProviderFilter(StackedConfigurationModel):
         )
 
     @property
-    def available_providers(self) -> List[str]:
+    def available_providers(self) -> list[str]:
         """
         Return a filtered list of available providers
         """
@@ -116,7 +116,7 @@ class ProviderFilter(StackedConfigurationModel):
         return _providers
 
     @classmethod
-    def get_available_providers(cls, course_key: CourseKey) -> List[str]:
+    def get_available_providers(cls, course_key: CourseKey) -> list[str]:
         _filter = cls.current(course_key=course_key)
         providers = _filter.available_providers
         return providers
@@ -202,9 +202,9 @@ class DiscussionsConfiguration(TimeStampedModel):
     # pylint: enable=undefined-variable
 
     @property
-    def available_providers(self) -> List[str]:
+    def available_providers(self) -> list[str]:
         return ProviderFilter.current(course_key=self.context_key).available_providers
 
     @classmethod
-    def get_available_providers(cls, context_key: CourseKey) -> List[str]:
+    def get_available_providers(cls, context_key: CourseKey) -> list[str]:
         return ProviderFilter.current(course_key=context_key).available_providers