diff --git a/openedx/features/course_search/views/course_search.py b/openedx/features/course_search/views/course_search.py
index 22762c1fca..d9c2f11ed8 100644
--- a/openedx/features/course_search/views/course_search.py
+++ b/openedx/features/course_search/views/course_search.py
@@ -33,10 +33,10 @@ class CourseSearchView(CourseTabView):
         """
         Displays the home page for the specified course.
         """
-        return super(CourseSearchView, self).get(request, course_id, 'courseware', **kwargs)  # lint-amnesty, pylint: disable=super-with-arguments
+        return super().get(request, course_id, 'courseware', **kwargs)
 
     def render_to_fragment(self, request, course=None, tab=None, **kwargs):  # lint-amnesty, pylint: disable=arguments-differ, unused-argument
-        course_id = six.text_type(course.id)
+        course_id = str(course.id)
         home_fragment_view = CourseSearchFragmentView()
         return home_fragment_view.render_to_fragment(request, course_id=course_id, **kwargs)
 
@@ -53,7 +53,7 @@ class CourseSearchFragmentView(EdxFragmentView):
         course_key = CourseKey.from_string(course_id)
         course = get_course_overview_with_access(request.user, 'load', course_key, check_if_enrolled=True)
         course_url_name = default_course_url_name(course.id)
-        course_url = reverse(course_url_name, kwargs={'course_id': six.text_type(course.id)})
+        course_url = reverse(course_url_name, kwargs={'course_id': str(course.id)})
 
         # Render the course home fragment
         context = {
diff --git a/openedx/features/discounts/admin.py b/openedx/features/discounts/admin.py
index 35b0003826..57a8e1b5da 100644
--- a/openedx/features/discounts/admin.py
+++ b/openedx/features/discounts/admin.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """
 Django Admin pages for DiscountRestrictionConfig.
 """
diff --git a/openedx/features/discounts/applicability.py b/openedx/features/discounts/applicability.py
index c681d811d0..e11f288c01 100644
--- a/openedx/features/discounts/applicability.py
+++ b/openedx/features/discounts/applicability.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """
 Contains code related to computing discount percentage
 and discount applicability.
@@ -36,8 +35,8 @@ from common.djangoapps.track import segment
 # .. toggle_tickets: REVEM-282
 # .. toggle_warnings: This temporary feature toggle does not have a target removal date.
 DISCOUNT_APPLICABILITY_FLAG = LegacyWaffleFlag(
-    waffle_namespace=LegacyWaffleFlagNamespace(name=u'discounts'),
-    flag_name=u'enable_discounting',
+    waffle_namespace=LegacyWaffleFlagNamespace(name='discounts'),
+    flag_name='enable_discounting',
     module_name=__name__,
 )
 
diff --git a/openedx/features/discounts/apps.py b/openedx/features/discounts/apps.py
index 74374d59eb..21c6f69930 100644
--- a/openedx/features/discounts/apps.py
+++ b/openedx/features/discounts/apps.py
@@ -1,4 +1,3 @@
-
 """
 Discounts application configuration
 """
diff --git a/openedx/features/discounts/migrations/0001_initial.py b/openedx/features/discounts/migrations/0001_initial.py
index 113d939304..6cdbb71ff6 100644
--- a/openedx/features/discounts/migrations/0001_initial.py
+++ b/openedx/features/discounts/migrations/0001_initial.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Generated by Django 1.11.20 on 2019-05-31 20:08
 
 
diff --git a/openedx/features/discounts/migrations/0002_auto_20191022_1720.py b/openedx/features/discounts/migrations/0002_auto_20191022_1720.py
index 0364d5ab8a..32d2e1c3cc 100644
--- a/openedx/features/discounts/migrations/0002_auto_20191022_1720.py
+++ b/openedx/features/discounts/migrations/0002_auto_20191022_1720.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Generated by Django 1.11.25 on 2019-10-22 17:20
 
 
diff --git a/openedx/features/discounts/tests/test_applicability.py b/openedx/features/discounts/tests/test_applicability.py
index 1a6a584ec1..e575701c76 100644
--- a/openedx/features/discounts/tests/test_applicability.py
+++ b/openedx/features/discounts/tests/test_applicability.py
@@ -1,5 +1,4 @@
 """Tests of openedx.features.discounts.applicability"""
-# -*- coding: utf-8 -*-
 
 
 from datetime import datetime, timedelta
@@ -11,7 +10,7 @@ from django.contrib.sites.models import Site
 from django.utils.timezone import now
 from edx_toggles.toggles.testutils import override_waffle_flag
 from enterprise.models import EnterpriseCustomer, EnterpriseCustomerUser
-from mock import Mock, patch
+from unittest.mock import Mock, patch
 
 from common.djangoapps.course_modes.models import CourseMode
 from common.djangoapps.course_modes.tests.factories import CourseModeFactory
@@ -35,12 +34,12 @@ class TestApplicability(ModuleStoreTestCase):
     """
 
     def setUp(self):
-        super(TestApplicability, self).setUp()  # lint-amnesty, pylint: disable=super-with-arguments
+        super().setUp()
         self.site, _ = Site.objects.get_or_create(domain='example.com')
         self.user = UserFactory.create()
         self.course = CourseFactory.create(run='test', display_name='test')
         CourseModeFactory.create(course_id=self.course.id, mode_slug='verified')
-        now_time = datetime.now(tz=pytz.UTC).strftime(u"%Y-%m-%d %H:%M:%S%z")
+        now_time = datetime.now(tz=pytz.UTC).strftime("%Y-%m-%d %H:%M:%S%z")
         ExperimentData.objects.create(
             user=self.user, experiment_id=REV1008_EXPERIMENT_ID, key=str(self.course.id), value=now_time
         )
diff --git a/openedx/features/discounts/tests/test_discount_restriction_models.py b/openedx/features/discounts/tests/test_discount_restriction_models.py
index 12714c4453..38815a660f 100644
--- a/openedx/features/discounts/tests/test_discount_restriction_models.py
+++ b/openedx/features/discounts/tests/test_discount_restriction_models.py
@@ -24,7 +24,7 @@ class TestDiscountRestrictionConfig(CacheIsolationTestCase):
     def setUp(self):
         self.course_overview = CourseOverviewFactory.create()
         self.user = UserFactory.create()
-        super(TestDiscountRestrictionConfig, self).setUp()  # lint-amnesty, pylint: disable=super-with-arguments
+        super().setUp()
 
     @ddt.data(True, False)
     def test_disabled_for_course_stacked_config(
diff --git a/openedx/features/discounts/tests/test_utils.py b/openedx/features/discounts/tests/test_utils.py
index 695b001df8..15a3b26005 100644
--- a/openedx/features/discounts/tests/test_utils.py
+++ b/openedx/features/discounts/tests/test_utils.py
@@ -1,7 +1,7 @@
 """
 Tests of the openedx.features.discounts.utils module.
 """
-from mock import patch, Mock
+from unittest.mock import patch, Mock
 
 import ddt
 import six
@@ -33,7 +33,7 @@ class TestStrikeoutPrice(TestCase):
         ):
             content, has_discount = utils.format_strikeout_price(Mock(name='user'), Mock(name='course'))
 
-        assert six.text_type(content) == u"<span class='price'>$100</span>"
+        assert str(content) == "<span class='price'>$100</span>"
         assert not has_discount
 
     @ddt.data((15, 100, "$100", "$85",), (50, 50, "$50", "$25"), (10, 99, "$99", "$89.10"))
@@ -47,12 +47,12 @@ class TestStrikeoutPrice(TestCase):
         ):
             content, has_discount = utils.format_strikeout_price(Mock(name='user'), Mock(name='course'))
 
-        assert six.text_type(content) == (
-            u"<span class='sr-only'>"
-            u"Original price: <span class='price original'>{original_price}</span>, discount price: "
-            u"</span>"
-            u"<span class='price discount'>{discount_price}</span> "
-            u"<del aria-hidden='true'><span class='price original'>{original_price}</span></del>"
+        assert str(content) == (
+            "<span class='sr-only'>"
+            "Original price: <span class='price original'>{original_price}</span>, discount price: "
+            "</span>"
+            "<span class='price discount'>{discount_price}</span> "
+            "<del aria-hidden='true'><span class='price original'>{original_price}</span></del>"
         ).format(original_price=formatted_base_price, discount_price=final_price)
         assert has_discount
 
diff --git a/openedx/features/discounts/tests/test_views.py b/openedx/features/discounts/tests/test_views.py
index bf8f564dbc..5a735375c3 100644
--- a/openedx/features/discounts/tests/test_views.py
+++ b/openedx/features/discounts/tests/test_views.py
@@ -1,5 +1,4 @@
 """Tests of openedx.features.discounts.views"""
-# -*- coding: utf-8 -*-
 
 
 import jwt
@@ -19,20 +18,20 @@ class TestCourseUserDiscount(ModuleStoreTestCase):
     """
 
     def setUp(self):
-        super(TestCourseUserDiscount, self).setUp()  # lint-amnesty, pylint: disable=super-with-arguments
+        super().setUp()
         self.user = UserFactory.create()
         self.course = CourseFactory.create(run='test', display_name='test')
         self.client = Client()
         self.url = reverse(
             'api_discounts:course_user_discount',
-            kwargs={'course_key_string': six.text_type(self.course.id)}
+            kwargs={'course_key_string': str(self.course.id)}
         )
 
     def test_url(self):
         """
         Test that the url hasn't changed
         """
-        assert self.url == ('/api/discounts/course/' + six.text_type(self.course.id))
+        assert self.url == ('/api/discounts/course/' + str(self.course.id))
 
     def test_course_user_discount(self):
         """
diff --git a/openedx/features/discounts/urls.py b/openedx/features/discounts/urls.py
index 52e12f7024..f3a9e29186 100644
--- a/openedx/features/discounts/urls.py
+++ b/openedx/features/discounts/urls.py
@@ -9,8 +9,8 @@ from django.conf.urls import url
 from .views import CourseUserDiscount, CourseUserDiscountWithUserParam
 
 urlpatterns = [
-    url(r'^course/{}'.format(settings.COURSE_KEY_PATTERN), CourseUserDiscount.as_view(), name='course_user_discount'),
-    url(r'^user/(?P<user_id>[^/]*)/course/{}'.format(settings.COURSE_KEY_PATTERN),
+    url(fr'^course/{settings.COURSE_KEY_PATTERN}', CourseUserDiscount.as_view(), name='course_user_discount'),
+    url(fr'^user/(?P<user_id>[^/]*)/course/{settings.COURSE_KEY_PATTERN}',
         CourseUserDiscountWithUserParam.as_view(),
         name='course_user_discount_with_param'),
 ]
diff --git a/openedx/features/discounts/utils.py b/openedx/features/discounts/utils.py
index afd305b8a1..c5a3e71036 100644
--- a/openedx/features/discounts/utils.py
+++ b/openedx/features/discounts/utils.py
@@ -43,7 +43,7 @@ def offer_banner_wrapper(user, block, view, frag, context):  # pylint: disable=W
     # Course content must be escaped to render correctly due to the way the
     # way the XBlock rendering works. Transforming the safe markup to unicode
     # escapes correctly.
-    offer_banner_fragment.content = six.text_type(offer_banner_fragment.content)
+    offer_banner_fragment.content = str(offer_banner_fragment.content)
 
     offer_banner_fragment.add_content(frag.content)
     offer_banner_fragment.add_fragment_resources(frag)
@@ -69,9 +69,9 @@ def _get_discount_prices(user, course, assume_discount=False):
         discounted_price = base_price * ((100.0 - percentage) / 100)
         if discounted_price:  # leave 0 prices alone, as format_course_price below will adjust to 'Free'
             if discounted_price == int(discounted_price):
-                discounted_price = '{:0.0f}'.format(discounted_price)
+                discounted_price = f'{discounted_price:0.0f}'
             else:
-                discounted_price = '{:0.2f}'.format(discounted_price)
+                discounted_price = f'{discounted_price:0.2f}'
 
         return format_course_price(base_price), format_course_price(discounted_price), percentage
     else:
@@ -215,7 +215,7 @@ def get_first_purchase_offer_banner_fragment_from_key(user, course_key):
     shouldn't show a first purchase offer message for this user.
     """
     request_cache = RequestCache('get_first_purchase_offer_banner_fragment_from_key')
-    cache_key = 'html:{},{}'.format(user.id, course_key)
+    cache_key = f'html:{user.id},{course_key}'
     cache_response = request_cache.get_cached_response(cache_key)
     if cache_response.is_found:
         cached_html = cache_response.value