typing: Import ValuesQuerySet alias from django_stubs_ext.

This saves us from using a conditional import.

Signed-off-by: Zixuan James Li <p359101898@gmail.com>

zerver/actions/message_send.py

@@ -3,7 +3,6 @@ import logging
 from collections import defaultdict
 from email.headerregistry import Address
 from typing import (
-    TYPE_CHECKING,
     AbstractSet,
     Any,
     Callable,
@@ -27,6 +26,7 @@ from django.utils.html import escape
 from django.utils.timezone import now as timezone_now
 from django.utils.translation import gettext as _
 from django.utils.translation import override as override_language
+from django_stubs_ext import ValuesQuerySet
 
 from zerver.actions.uploads import do_claim_attachments
 from zerver.lib.addressee import Addressee
@@ -89,9 +89,6 @@ from zerver.models import (
 )
 from zerver.tornado.django_api import send_event
 
-if TYPE_CHECKING:
-    from django.db.models.query import _QuerySet as ValuesQuerySet
-
 
 def compute_irc_user_fullname(email: str) -> str:
     return Address(addr_spec=email).username + " (IRC)"

zerver/actions/streams.py

@@ -1,18 +1,7 @@
 import hashlib
 from collections import defaultdict
 from dataclasses import dataclass
-from typing import (
+from typing import Any, Collection, Dict, Iterable, List, Mapping, Optional, Set, Tuple
-    TYPE_CHECKING,
-    Any,
-    Collection,
-    Dict,
-    Iterable,
-    List,
-    Mapping,
-    Optional,
-    Set,
-    Tuple,
-)
 
 import orjson
 from django.conf import settings
@@ -20,6 +9,7 @@ from django.db import transaction
 from django.utils.timezone import now as timezone_now
 from django.utils.translation import gettext as _
 from django.utils.translation import override as override_language
+from django_stubs_ext import ValuesQuerySet
 
 from zerver.actions.default_streams import (
     do_remove_default_stream,
@@ -75,9 +65,6 @@ from zerver.models import (
 )
 from zerver.tornado.django_api import send_event
 
-if TYPE_CHECKING:
-    from django.db.models.query import _QuerySet as ValuesQuerySet
-
 
 @transaction.atomic(savepoint=False)
 def do_deactivate_stream(
@@ -220,7 +207,7 @@ def merge_streams(
 
 def get_subscriber_ids(
     stream: Stream, requesting_user: Optional[UserProfile] = None
-) -> "ValuesQuerySet[Subscription, int]":
+) -> ValuesQuerySet[Subscription, int]:
     subscriptions_query = get_subscribers_query(stream, requesting_user)
     return subscriptions_query.values_list("user_profile_id", flat=True)
 

zerver/lib/cache_helpers.py

@@ -1,12 +1,13 @@
 # See https://zulip.readthedocs.io/en/latest/subsystems/caching.html for docs
 import datetime
 import logging
-from typing import TYPE_CHECKING, Any, Callable, Dict, Iterable, Tuple
+from typing import Any, Callable, Dict, Iterable, Tuple
 
 from django.conf import settings
 from django.contrib.sessions.models import Session
 from django.db.models.query import QuerySet
 from django.utils.timezone import now as timezone_now
+from django_stubs_ext import ValuesQuerySet
 
 # This file needs to be different from cache.py because cache.py
 # cannot import anything from zerver.models or we'd have an import
@@ -32,9 +33,6 @@ from zerver.models import (
     huddle_hash_cache_key,
 )
 
-if TYPE_CHECKING:
-    from django.db.models.query import _QuerySet as ValuesQuerySet
-
 
 def user_cache_items(
     items_for_remote_cache: Dict[str, Tuple[UserProfile]], user_profile: UserProfile
@@ -73,7 +71,7 @@ def session_cache_items(
     items_for_remote_cache[store.cache_key] = store.decode(session.session_data)
 
 
-def get_active_realm_ids() -> "ValuesQuerySet[RealmCount, int]":
+def get_active_realm_ids() -> ValuesQuerySet[RealmCount, int]:
     """For installations like Zulip Cloud hosting a lot of realms, it only makes
     sense to do cache-filling work for realms that have any currently
     active users/clients.  Otherwise, we end up with every single-user

zerver/lib/display_recipient.py

@@ -1,4 +1,6 @@
-from typing import TYPE_CHECKING, Dict, List, Optional, Set, Tuple, TypedDict
+from typing import Dict, List, Optional, Set, Tuple, TypedDict
+
+from django_stubs_ext import ValuesQuerySet
 
 from zerver.lib.cache import (
     bulk_cached_fetch,
@@ -10,9 +12,6 @@ from zerver.lib.cache import (
 from zerver.lib.types import DisplayRecipientT, UserDisplayRecipient
 from zerver.models import Recipient, Stream, UserProfile, bulk_get_huddle_user_ids
 
-if TYPE_CHECKING:
-    from django.db.models.query import _QuerySet as ValuesQuerySet
-
 display_recipient_fields = [
     "id",
     "email",
@@ -101,7 +100,7 @@ def bulk_fetch_display_recipients(
 
     def stream_query_function(
         recipient_ids: List[int],
-    ) -> "ValuesQuerySet[Stream, TinyStreamResult]":
+    ) -> ValuesQuerySet[Stream, TinyStreamResult]:
         stream_ids = [
             recipient_id_to_type_pair_dict[recipient_id][1] for recipient_id in recipient_ids
         ]

zerver/lib/message.py

@@ -3,7 +3,6 @@ import datetime
 import zlib
 from dataclasses import dataclass, field
 from typing import (
-    TYPE_CHECKING,
     Any,
     Collection,
     Dict,
@@ -24,6 +23,7 @@ from django.db import connection
 from django.db.models import Max, Sum
 from django.utils.timezone import now as timezone_now
 from django.utils.translation import gettext as _
+from django_stubs_ext import ValuesQuerySet
 from psycopg2.sql import SQL
 
 from analytics.lib.counts import COUNT_STATS
@@ -69,9 +69,6 @@ from zerver.models import (
     query_for_ids,
 )
 
-if TYPE_CHECKING:
-    from django.db.models.query import _QuerySet as ValuesQuerySet
-
 
 class MessageDetailsDict(TypedDict, total=False):
     type: str
@@ -891,7 +888,7 @@ def bulk_access_messages(
 
 def bulk_access_messages_expect_usermessage(
     user_profile_id: int, message_ids: Sequence[int]
-) -> "ValuesQuerySet[UserMessage, int]":
+) -> ValuesQuerySet[UserMessage, int]:
     """
     Like bulk_access_messages, but faster and potentially stricter.
 

zerver/lib/stream_subscription.py

@@ -2,12 +2,10 @@ import itertools
 from collections import defaultdict
 from dataclasses import dataclass
 from operator import itemgetter
-from typing import TYPE_CHECKING, AbstractSet, Any, Collection, Dict, List, Optional, Set
+from typing import AbstractSet, Any, Collection, Dict, List, Optional, Set
 
 from django.db.models import Q, QuerySet
-
+from django_stubs_ext import ValuesQuerySet
-if TYPE_CHECKING:
-    from django.db.models.query import _QuerySet as ValuesQuerySet
 
 from zerver.models import AlertWord, Realm, Recipient, Stream, Subscription, UserProfile
 
@@ -53,7 +51,7 @@ def get_active_subscriptions_for_stream_ids(stream_ids: Set[int]) -> QuerySet[Su
 
 def get_subscribed_stream_ids_for_user(
     user_profile: UserProfile,
-) -> "ValuesQuerySet[Subscription, int]":
+) -> ValuesQuerySet[Subscription, int]:
     return Subscription.objects.filter(
         user_profile_id=user_profile,
         recipient__type=Recipient.STREAM,
@@ -63,7 +61,7 @@ def get_subscribed_stream_ids_for_user(
 
 def get_subscribed_stream_recipient_ids_for_user(
     user_profile: UserProfile,
-) -> "ValuesQuerySet[Subscription, int]":
+) -> ValuesQuerySet[Subscription, int]:
     return Subscription.objects.filter(
         user_profile_id=user_profile,
         recipient__type=Recipient.STREAM,

zerver/lib/user_groups.py

@@ -1,16 +1,14 @@
-from typing import TYPE_CHECKING, Dict, Iterable, List, Sequence, TypedDict
+from typing import Dict, Iterable, List, Sequence, TypedDict
 
 from django.db import transaction
 from django.db.models import QuerySet
 from django.utils.translation import gettext as _
 from django_cte import With
+from django_stubs_ext import ValuesQuerySet
 
 from zerver.lib.exceptions import JsonableError
 from zerver.models import GroupGroupMembership, Realm, UserGroup, UserGroupMembership, UserProfile
 
-if TYPE_CHECKING:
-    from django.db.models.query import _QuerySet as ValuesQuerySet
-
 
 class UserGroupDict(TypedDict):
     id: int
@@ -128,7 +126,7 @@ def create_user_group(
 
 def get_user_group_direct_member_ids(
     user_group: UserGroup,
-) -> "ValuesQuerySet[UserGroupMembership, int]":
+) -> ValuesQuerySet[UserGroupMembership, int]:
     return UserGroupMembership.objects.filter(user_group=user_group).values_list(
         "user_profile_id", flat=True
     )

zerver/models.py

@@ -50,7 +50,7 @@ from django.utils.timezone import now as timezone_now
 from django.utils.translation import gettext as _
 from django.utils.translation import gettext_lazy
 from django_cte import CTEManager
-from django_stubs_ext import StrPromise
+from django_stubs_ext import StrPromise, ValuesQuerySet
 
 from confirmation import settings as confirmation_settings
 from zerver.lib import cache
@@ -119,7 +119,6 @@ STREAM_NAMES = TypeVar("STREAM_NAMES", Sequence[str], AbstractSet[str])
 if TYPE_CHECKING:
     # We use ModelBackend only for typing. Importing it otherwise causes circular dependency.
     from django.contrib.auth.backends import ModelBackend
-    from django.db.models.query import _QuerySet as ValuesQuerySet
 
 
 class EmojiInfo(TypedDict):
@@ -160,10 +159,10 @@ RowT = TypeVar("RowT")
 
 
 def query_for_ids(
-    query: "ValuesQuerySet[ModelT, RowT]",
+    query: ValuesQuerySet[ModelT, RowT],
     user_ids: List[int],
     field: str,
-) -> "ValuesQuerySet[ModelT, RowT]":
+) -> ValuesQuerySet[ModelT, RowT]:
     """
     This function optimizes searches of the form
     `user_profile_id in (1, 2, 3, 4)` by quickly
@@ -2789,7 +2788,7 @@ def get_huddle_recipient(user_profile_ids: Set[int]) -> Recipient:
     return huddle.recipient
 
 
-def get_huddle_user_ids(recipient: Recipient) -> "ValuesQuerySet[Subscription, int]":
+def get_huddle_user_ids(recipient: Recipient) -> ValuesQuerySet["Subscription", int]:
     assert recipient.type == Recipient.HUDDLE
 
     return (