feat: add timezones constants

cms/djangoapps/contentstore/rest_api/v1/views/tests/test_home.py

@@ -2,7 +2,6 @@
 Unit tests for home page view.
 """
 import ddt
-import pytz
 from collections import OrderedDict
 from datetime import datetime, timedelta
 from django.conf import settings
@@ -12,6 +11,7 @@
     override_waffle_switch,
 )
 from rest_framework import status
+from zoneinfo import ZoneInfo
 
 from cms.djangoapps.contentstore.tests.utils import CourseTestCase
 from cms.djangoapps.contentstore.tests.test_libraries import LibraryTestCase
@@ -193,7 +193,7 @@ def test_filter_and_ordering_courses(
             display_name="Course (Demo)",
             id=archived_course_key,
             org=archived_course_key.org,
-            end=(datetime.now() - timedelta(days=365)).replace(tzinfo=pytz.UTC),
+            end=(datetime.now() - timedelta(days=365)).replace(tzinfo=ZoneInfo("UTC")),
         )
         active_course_key = self.store.make_course_key("sample-org", "sample-number", "sample-run")
         CourseOverviewFactory.create(

cms/djangoapps/contentstore/rest_api/v2/views/tests/test_home.py

@@ -6,12 +6,12 @@
 from unittest.mock import patch
 
 import ddt
-from zoneinfo import ZoneInfo
 from django.conf import settings
 from django.test import override_settings
 from django.urls import reverse
 from edx_toggles.toggles.testutils import override_waffle_switch
 from rest_framework import status
+from zoneinfo import ZoneInfo
 
 from cms.djangoapps.contentstore.tests.utils import CourseTestCase
 from cms.djangoapps.contentstore.utils import reverse_course_url
@@ -303,7 +303,7 @@ def test_filter_and_ordering_courses(
             display_name="Course (Demo)",
             id=archived_course_key,
             org=archived_course_key.org,
-            end=(datetime.now() - timedelta(days=365)).replace(tzinfo=pytz.UTC),
+            end=(datetime.now() - timedelta(days=365)).replace(tzinfo=ZoneInfo("UTC")),
         )
         active_course_key = self.store.make_course_key("foo-org", "foo-number", "foo-run")
         CourseOverviewFactory.create(

cms/djangoapps/contentstore/tests/test_courseware_index.py

@@ -505,7 +505,7 @@ def test_delete_course_from_search_index_after_course_deletion(self):
         self._test_delete_course_from_search_index_after_course_deletion(self.store)
 
     def test_empty_course(self):
-        empty_course = CourseFactory.create(modulestore=self.store, start=datetime(2015, 3, 1, tzinfo=UTC))
+        empty_course = CourseFactory.create(modulestore=self.store, start=datetime(2015, 3, 1, tzinfo=ZoneInfo("UTC")))
         added_to_index = CoursewareSearchIndexer.do_course_reindex(self.store, empty_course.id)
         assert added_to_index == 0
 

lms/djangoapps/mobile_api/users/tests.py

@@ -108,8 +108,8 @@ class TestUserEnrollmentApi(UrlResetMixin, MobileAPITestCase, MobileAuthUserTest
     ALLOW_ACCESS_TO_UNRELEASED_COURSE = True
     ALLOW_ACCESS_TO_MILESTONE_COURSE = True
     ALLOW_ACCESS_TO_NON_VISIBLE_COURSE = True
-    NEXT_WEEK = datetime.datetime.now(ZoneInfo("UTC")) + datetime.timedelta(days=7)
-    LAST_WEEK = datetime.datetime.now(ZoneInfo("UTC")) - datetime.timedelta(days=7)
+    NEXT_WEEK = datetime.datetime.now(ZoneInfo('UTC')) + datetime.timedelta(days=7)
+    LAST_WEEK = datetime.datetime.now(ZoneInfo('UTC')) - datetime.timedelta(days=7)
     THREE_YEARS_AGO = now() - datetime.timedelta(days=(365 * 3))
     ADVERTISED_START = "Spring 2016"
     ENABLED_SIGNALS = ['course_published']
@@ -1438,7 +1438,7 @@ def test_user_have_active_and_inactive_enrollments_and_no_completions(self) -> N
         old_course = CourseFactory.create(org="edx", mobile_available=True)
         self.enroll(old_course.id)
         old_enrollment = CourseEnrollment.objects.filter(user=self.user, course=old_course.course_id).first()
-        old_enrollment.created = datetime.datetime.now(pytz.UTC) - datetime.timedelta(days=31)
+        old_enrollment.created = datetime.datetime.now(ZoneInfo('UTC')) - datetime.timedelta(days=31)
         old_enrollment.save()
 
         response = self.api_response(api_version=API_V1)
@@ -1466,7 +1466,7 @@ def test_different_enrollment_dates(self, enrolled_days_ago: int, recently_activ
         course = CourseFactory.create(org="edx", mobile_available=True, run='1001')
         self.enroll(course.id)
         enrollment = CourseEnrollment.objects.filter(user=self.user, course=course.course_id).first()
-        enrollment.created = datetime.datetime.now(pytz.UTC) - datetime.timedelta(days=enrolled_days_ago)
+        enrollment.created = datetime.datetime.now(ZoneInfo('UTC')) - datetime.timedelta(days=enrolled_days_ago)
         enrollment.save()
 
         response = self.api_response(api_version=API_V1)
@@ -1500,7 +1500,7 @@ def test_different_completion_dates(self, completed_days_ago: int, recently_acti
         self.enroll(course.id)
         enrollment = CourseEnrollment.objects.filter(user=self.user, course=course.course_id).first()
         # make enrollment older 30 days ago
-        enrollment.created = datetime.datetime.now(pytz.UTC) - datetime.timedelta(days=50)
+        enrollment.created = datetime.datetime.now(ZoneInfo('UTC')) - datetime.timedelta(days=50)
         enrollment.save()
         completion = BlockCompletion.objects.create(
             user=self.user,
@@ -1509,7 +1509,7 @@ def test_different_completion_dates(self, completed_days_ago: int, recently_acti
             block_key=section.location,
             completion=0.5,
         )
-        completion.created = datetime.datetime.now(pytz.UTC) - datetime.timedelta(days=completed_days_ago)
+        completion.created = datetime.datetime.now(ZoneInfo('UTC')) - datetime.timedelta(days=completed_days_ago)
         completion.save()
 
         response = self.api_response(api_version=API_V1)

lms/djangoapps/mobile_api/users/views.py

@@ -8,7 +8,6 @@
 from functools import cached_property
 from typing import Dict, List, Optional, Set
 
-import pytz
 from completion.exceptions import UnavailableCompletionData
 from completion.models import BlockCompletion
 from completion.utilities import get_key_to_last_completed_block
@@ -25,6 +24,7 @@
 from rest_framework.decorators import api_view
 from rest_framework.permissions import SAFE_METHODS
 from rest_framework.response import Response
+from zoneinfo import ZoneInfo
 from xblock.fields import Scope
 from xblock.runtime import KeyValueStore
 from edx_rest_framework_extensions.paginators import DefaultPagination
@@ -597,7 +597,7 @@ def get(self, request, *args, **kwargs) -> Response:
         """
         Gets user's enrollments status.
         """
-        active_status_date = datetime.datetime.now(pytz.UTC) - datetime.timedelta(days=30)
+        active_status_date = datetime.datetime.now(ZoneInfo('UTC')) - datetime.timedelta(days=30)
         username = kwargs.get('username')
         course_ids_where_user_has_completions = self._get_course_ids_where_user_has_completions(
             username,

openedx/core/djangoapps/user_api/preferences/api.py

@@ -11,8 +11,7 @@
 from django.utils.translation import gettext as _
 from django.utils.translation import gettext_noop
 from django_countries import countries
-from zoneinfo import available_timezones
-from pytz import country_timezones
+from pytz import common_timezones, common_timezones_set, country_timezones
 
 from openedx.core.lib.time_zone_utils import get_display_time_zone
 from common.djangoapps.student.models import User, UserProfile
@@ -430,7 +429,7 @@ def validate_user_preference_serializer(serializer, preference_key, preference_v
                 "user_message": user_message,
             }
         })
-    if preference_key == "time_zone" and preference_value not in available_timezones():
+    if preference_key == "time_zone" and preference_value not in common_timezones_set:
         developer_message = gettext_noop("Value '{preference_value}' not valid for preference '{preference_key}': Not in timezone set.")  # pylint: disable=line-too-long
         user_message = gettext_noop("Value '{preference_value}' is not a valid time zone selection.")
         raise PreferenceValidationError({
@@ -465,14 +464,14 @@ def get_country_time_zones(country_code=None):
         country_code (str): ISO 3166-1 Alpha-2 country code
     """
     if country_code is None or country_code.upper() not in set(countries.alt_codes):
-        return _get_sorted_time_zone_list(available_timezones())
+        return _get_sorted_time_zone_list(common_timezones)
 
     # We can still get a failure here because there are some countries that are
     # valid, but have no defined timezones in the pytz package (e.g. BV, HM)
     try:
         return _get_sorted_time_zone_list(country_timezones(country_code))
     except KeyError:
-        return _get_sorted_time_zone_list(available_timezones())
+        return _get_sorted_time_zone_list(common_timezones)
 
 
 def _get_sorted_time_zone_list(time_zone_list):

openedx/core/djangoapps/user_api/preferences/tests/test_api.py

@@ -11,7 +11,8 @@
 from django.contrib.auth.models import User  # lint-amnesty, pylint: disable=imported-auth-user
 from django.test.utils import override_settings
 from django.urls import reverse
-from zoneinfo import ZoneInfo, available_timezones
+from pytz import common_timezones
+from zoneinfo import ZoneInfo
 
 from openedx.core.djangolib.testing.utils import CacheIsolationTestCase, skip_unless_lms
 from openedx.core.lib.time_zone_utils import get_display_time_zone
@@ -401,8 +402,8 @@ class CountryTimeZoneTest(CacheIsolationTestCase):
     """
 
     @ddt.data(('ES', ['Africa/Ceuta', 'Atlantic/Canary', 'Europe/Madrid']),
-              (None, available_timezones()),
-              ('AA', available_timezones()))
+              (None, common_timezones),
+              ('AA', common_timezones))
     @ddt.unpack
     def test_get_country_time_zones(self, country_code, expected_time_zones):
         """

openedx/core/djangoapps/user_api/tests/test_views.py

@@ -5,7 +5,7 @@
 from django.test.utils import override_settings
 from django.urls import reverse
 from opaque_keys.edx.keys import CourseKey
-from zoneinfo import available_timezones
+from pytz import common_timezones_set
 
 from openedx.core.djangoapps.django_comment_common import models
 from openedx.core.djangolib.testing.utils import CacheIsolationTestCase, skip_unless_lms
@@ -631,7 +631,7 @@ def test_methods_not_allowed(self, country_uri):
     def _assert_time_zone_is_valid(self, time_zone_info):
         """ Asserts that the time zone is a valid pytz time zone """
         time_zone_name = time_zone_info['time_zone']
-        assert time_zone_name in available_timezones()
+        assert time_zone_name in common_timezones_set
         assert time_zone_info['description'] == get_display_time_zone(time_zone_name)
 
     # The time zones count may need to change each time we upgrade pytz

openedx/core/lib/time_zone_utils.py

@@ -4,7 +4,8 @@
 
 from datetime import datetime
 
-from zoneinfo import ZoneInfo, available_timezones
+from pytz import common_timezones
+from zoneinfo import ZoneInfo
 
 
 def _format_time_zone_string(time_zone, date_time, format_string):
@@ -49,6 +50,6 @@ def get_display_time_zone(time_zone_name):
 
 
 TIME_ZONE_CHOICES = sorted(
-    [(tz, get_display_time_zone(tz)) for tz in available_timezones()],
+    [(tz, get_display_time_zone(tz)) for tz in common_timezones],
     key=lambda tz_tuple: tz_tuple[1]
 )