Add asynchronous context manager support for Client

discord/client.py

@@ -41,6 +41,7 @@ from typing import (
     Sequence,
     TYPE_CHECKING,
     Tuple,
+    Type,
     TypeVar,
     Union,
 )
@@ -76,6 +77,8 @@ from .threads import Thread
 from .sticker import GuildSticker, StandardSticker, StickerPack, _sticker_factory
 
 if TYPE_CHECKING:
+    from typing_extensions import Self
+    from types import TracebackType
     from .types.guild import Guild as GuildPayload
     from .abc import SnowflakeTime, Snowflake, PrivateChannel
     from .guild import GuildChannel
@@ -180,10 +183,7 @@ class Client:
         The websocket gateway the client is currently connected to. Could be ``None``.
     """
 
-    def __init__(
-        self,
-        **options: Any,
-    ):
+    def __init__(self, **options: Any) -> None:
         self.loop: asyncio.AbstractEventLoop = MISSING
         # self.ws is set in the connect method
         self.ws: DiscordWebSocket = None  # type: ignore
@@ -216,6 +216,19 @@ class Client:
             VoiceClient.warn_nacl = False
             _log.warning("PyNaCl is not installed, voice will NOT be supported")
 
+    async def __aenter__(self) -> Self:
+        self.loop = asyncio.get_running_loop()
+        return self
+
+    async def __aexit__(
+        self,
+        exc_type: Optional[Type[BaseException]],
+        exc_value: Optional[BaseException],
+        traceback: Optional[TracebackType],
+    ) -> None:
+        if not self.is_closed():
+            await self.close()
+
     # internals
 
     def _get_websocket(self, guild_id: Optional[int] = None, *, shard_id: Optional[int] = None) -> DiscordWebSocket:
@@ -601,12 +614,8 @@ class Client:
         self.loop = asyncio.get_running_loop()
         self.http.loop = self.loop
         self._connection.loop = self.loop
-        try:
-            await self.login(token)
-            await self.connect(reconnect=reconnect)
-        finally:
-            if not self.is_closed():
-                await self.close()
+        await self.login(token)
+        await self.connect(reconnect=reconnect)
 
     async def setup_hook(self) -> None:
         """|coro|
@@ -645,8 +654,13 @@ class Client:
             is blocking. That means that registration of events or anything being
             called after this function call will not execute until it returns.
         """
+
+        async def runner():
+            async with self:
+                await self.start(*args, **kwargs)
+
         try:
-            asyncio.run(self.start(*args, **kwargs))
+            asyncio.run(runner())
         except KeyboardInterrupt:
             # nothing to do here
             # `asyncio.run` handles the loop cleanup