usage of literal None

Author: Lumabots

discord/client.py

@@ -40,6 +40,7 @@
     Sequence,
     TypeVar,
     overload,
+    Literal,
 )
 
 import aiohttp
@@ -248,9 +249,9 @@ def __init__(
         self.loop: asyncio.AbstractEventLoop = (
             asyncio.get_event_loop() if loop is None else loop
         )
-        self._listeners: dict[str, list[tuple[asyncio.Future, Callable[..., bool]]]] = (
-            {}
-        )
+        self._listeners: dict[
+            str, list[tuple[asyncio.Future, Callable[..., bool]]]
+        ] = {}
         self.shard_id: int | None = options.get("shard_id")
         self.shard_count: int | None = options.get("shard_count")
 
@@ -1191,7 +1192,7 @@ async def get_or_fetch_user(self, id: int, /) -> User | None:  # TODO: Remove in
     async def get_or_fetch(
         self: Client,
         object_type: type[_FETCHABLE],
-        object_id: None,
+        object_id: Literal[None],
         default: _D = ...,
     ) -> None | _D: ...
 

discord/guild.py

@@ -38,6 +38,7 @@
     Tuple,
     Union,
     overload,
+    Literal,
 )
 
 from . import abc, utils
@@ -868,7 +869,7 @@ def get_member(self, user_id: int, /) -> Member | None:
     async def get_or_fetch(
         self: Guild,
         object_type: type[_FETCHABLE],
-        object_id: None,
+        object_id: Literal[None],
         default: _D = ...,
     ) -> None | _D: ...
     @overload

discord/utils.py

@@ -598,7 +598,7 @@ def get(iterable: Iterable[T], **attrs: Any) -> T | None:
 async def get_or_fetch(
     obj: Guild | Client,
     object_type: type[_FETCHABLE],
-    object_id: None,
+    object_id: Literal[None],
     default: _D = ...,
     attr: str = ...,
     id: int = ...,
@@ -782,7 +782,7 @@ async def get_or_fetch(
     try:
         return await fetcher(obj, object_id)
     except (HTTPException, ValueError):
-        if default is not None:
+        if default is not MISSING:
             return default
         raise