Issue #22894: TestCase.subTest() would cause the test suite to be stopped when in failfast mode, even in the absence of failures.

It can still be enabled by instantiating a SSLContext manually.

the parent close() method. If the event loop is already closed, the self-pipe
is not unregistered from the selector.

functions:

* add_signal_handler()
* call_at()
* call_later()
* call_soon()
* call_soon_threadsafe()
* run_in_executor()

Fix also the error message of add_signal_handler() (fix the name of the
function).

release mode

Patch by David Watson.

Based on patch by Franck Michea.

Patch by Roumen Petrov.

Fixed an error in _PySys_GetSizeOf declaration.

  Patch by Ludovic.Gasc.

The re module could be used during building before array is built.

different lowercase are now matched in case-insensitive regular expressions.

platforms.

(issue #814253).

work in lookbehind assertions in regular expressions.

Patch by Mark Grandi.

Based on patch by Martin Panter.

Based on patch by Aivars Kalvāns.

Issue #20160: broken ctypes calling convention on MSVC / 64-bit Windows (large structs) Patch by mattip