* Extract _socket.pyi from socket.pyi.
* Extract _socket.socket from socket.socket.
* Fix socket.family annotation.
* Annotate SocketIO properly.
* SocketType is an alias of _socket.socket.
* Sort items in socket.pyi in the same order as in socket.py.
* Remove socket.EINTR.
* Use _typeshed.WriteableBuffer instead of custom alias.
* Add errorTab (Windows only).
* Add _socket.dup().
* Mark positional-only argments.
* Remove constructors from socket exceptions.
* socket.timeout is an alias for TimeoutError, starting with Python 3.10.
* Use PEP 604 in changed lines.
* Add alias for fileno arguments.
* getaddrinfo() port can be bytes.
* Explicitly override some SSLSocket methods.
* Allow ReadableBuffer in _CMSG arguments.
* Move socket from AbstractServer to Server.
* Fix Server.socket type on Python 3.7+.
* Use Iterable instead of list for socket argument.
Closes: #5535
Noticed this in mypy-primer output in #5516 on this code: https://github.com/encode/starlette/blob/master/starlette/testclient.py#L74
It calls `iscoroutinefunction()` on an object that may be None, which got flagged as an error but is actually fine; it just returns False.
We could also potentially use TypeGuard here, especially for `iscoroutine` which is just an `isinstance` call.
* Replace all uses of StrPath, BytesPath, and AnyPath in Python 2 stubs.
* Add StrOrBytesPath as preferred alias for AnyPath.
* Replace all remaining AnyPath instances with StrOrBytesPath.
* Mark AnyPath as obsolete.
Part of #5470
I just found and fixed a bug in pyright's "missing type arguments" check. When type arguments were omitted for a generic type within a subscript expression, the error was being suppressed. With this bug fixed, I found several new cases where type arguments were missing in stdlib stubs. (#5130)
Co-authored-by: Eric Traut <erictr@microsoft.com>
