It's still not necessary to build, but may be useful to some.

Patch by James Powell.

Patch by A. Jesse Jiryu Davis.

Patch by Martin Panter.

Patch by Martin Panter.

Issue #23524: Replace _PyVerify_fd function with calls to _set_thread_local_invalid_parameter_handler.

Close #23904: fix pathlib documentation misleadingly mentioning that bytes objects are accepted in the PurePath constructor

Patch by James Edwards.

Patch by Alex Gaynor.

TestHelpVersionOptional was redundant.

robust at shutdown. If needs to release multiple resources, they are released
even if errors are occured.

This will prevent failures from the version of NASM installed on buildbots,
if the ability to override the version used is desired again later, we can
figure out a way to opt in.

Patch by Davin Potts.

again if the first call to connect() raises an InterruptedError.

When the C function connect() fails with EINTR, the connection runs in
background. We have to wait until the socket becomes writable to be notified
when the connection succeed or fails.