stdlib: add many missing __del__ methods (#11042)

stdlib/asyncio/base_events.pyi

@@ -471,3 +471,5 @@ class BaseEventLoop(AbstractEventLoop):
         async def shutdown_default_executor(self, timeout: float | None = None) -> None: ...
     elif sys.version_info >= (3, 9):
         async def shutdown_default_executor(self) -> None: ...
+
+    def __del__(self) -> None: ...

stdlib/asyncio/base_subprocess.pyi

@@ -55,6 +55,7 @@ class BaseSubprocessTransport(transports.SubprocessTransport):
     async def _wait(self) -> int: ...  # undocumented
     def _try_finish(self) -> None: ...  # undocumented
     def _call_connection_lost(self, exc: BaseException | None) -> None: ...  # undocumented
+    def __del__(self) -> None: ...
 
 class WriteSubprocessPipeProto(protocols.BaseProtocol):  # undocumented
     def __init__(self, proc: BaseSubprocessTransport, fd: int) -> None: ...

stdlib/asyncio/sslproto.pyi

@@ -83,6 +83,8 @@ class _SSLProtocolTransport(transports._FlowControlMixin, transports.Transport):
         def set_read_buffer_limits(self, high: int | None = None, low: int | None = None) -> None: ...
         def get_read_buffer_size(self) -> int: ...
 
+    def __del__(self) -> None: ...
+
 if sys.version_info >= (3, 11):
     _SSLProtocolBase: TypeAlias = protocols.BufferedProtocol
 else:

stdlib/asyncio/streams.pyi

@@ -128,6 +128,7 @@ class StreamReaderProtocol(FlowControlMixin, protocols.Protocol):
         client_connected_cb: _ClientConnectedCallback | None = None,
         loop: events.AbstractEventLoop | None = None,
     ) -> None: ...
+    def __del__(self) -> None: ...
 
 class StreamWriter:
     def __init__(
@@ -161,6 +162,8 @@ class StreamWriter:
         async def start_tls(
             self, sslcontext: ssl.SSLContext, *, server_hostname: str | None = None, ssl_handshake_timeout: float | None = None
         ) -> None: ...
+    if sys.version_info >= (3, 11):
+        def __del__(self) -> None: ...
 
 class StreamReader(AsyncIterator[bytes]):
     def __init__(self, limit: int = 65536, loop: events.AbstractEventLoop | None = None) -> None: ...