* Revert "Fixed a typo in the HTMLParser.feed docstrings. The docstring started with an 'r', like a The docstring was correct. I read the patch in opposite direction, as *adding* the "r" prefix.
This reverts commit 5ba18503.

* Improves test_underpth_nosite_file to reveal why it fails.

* Enable building with Windows 10 SDK.

* Fix WinSDK detection

* Fix initialization on Windows when a ._pth file exists.

* Fix tabs

* Adds comment about Py_GetPath call.

Drop handshake_done and peer_cert members from PySSLSocket struct. The
peer certificate can be acquired from *SSL directly.
SSL_get_peer_certificate() does not trigger any network activity.
Instead of manually tracking the handshake state, simply use
SSL_is_init_finished().

In combination these changes fix auto-handshake for non-blocking
MemoryBIO connections.
Signed-off-by: Christian Heimes <christian@python.org>

use faulthandler._sigsegv() and ctypes.util.find_library('c')

Fixed a typo in the HTMLParser.feed docstrings. The docstring started with an 'r', like a rawstring. (#1759)

* Allow FileInput to accept a single PathLike object as a parameter for `files`

Fixes

bpo-30432: FileInput doesn't accept PathLike objects for file names

* Address comments from @ambv

PEP 432 specifies a number of large changes to interpreter startup code, including exposing a cleaner C-API. The major changes depend on a number of smaller changes. This patch includes all those smaller changes.

Some objects (like test mocks) auto-generate new objects on
attribute access, which can lead to an infinite loop in
inspect.unwrap().

Ensuring references are retained to otherwise temporary objects
and capping the size of the memo dict turns this case into a
conventional exception instead.

head_lock could be held by another thread when fork happened. We should
reset it to avoid deadlock.

Note: this doesn't unpack f-strings into the underlying JoinedStr AST.

Ideally we'd fully implement JoinedStr here but given its additional
complexity, I think this is worth bandaiding as is. This unblocks tools like
https://github.com/google/yapf to format 3.6 syntax using f-strings.

Defaults to 'no', but as before assertions are implied by --with-pydebug.

This partially solves bpo-23894.

Ran the docstrings through spell checker, and fixed spelling issues.

There was an unneeded space before a closing parenthesis in the `unittest.mock` documentation.

bpo-29619: Do not use HAVE_LARGEFILE_SUPPORT for type conversions (GH-1666).

* Use only the LongLong form for the conversions.

Increases coverage to 99%

* #30014: refactor poll-related classes so that poll(), epoll() and devpoll() share the same methods for register(), unregister(), close() and select()

* remove unused attribute

* use specific class attributes instead of select.* constants

* have all classes except SelectSelector a _selector attribute

* BaseException -> Exception

* be explicit in defining a close() method only for selectors which have it

* fix AttributeError

Based on patches by Duane Griffin and Tim Mitchell.

Original patch by Dennis Mårtensson.

Based on patch by Eryk Sun.

Workaround for a regrtest bug.

* Replaced list(<generator expression>) with list comprehension
* Replaced dict(<generator expression>) with dict comprehension
* Replaced set(<list literal>) with set literal
* Replaced builtin func(<list comprehension>) with func(<generator
  expression>) when supported (e.g. any(), all(), tuple(), min(), &
  max())

If we have a chain of generators/coroutines that are 'yield from'ing
each other, then resuming the stack works like:

- call send() on the outermost generator
- this enters _PyEval_EvalFrameDefault, which re-executes the
  YIELD_FROM opcode
- which calls send() on the next generator
- which enters _PyEval_EvalFrameDefault, which re-executes the
  YIELD_FROM opcode
- ...etc.

However, every time we enter _PyEval_EvalFrameDefault, the first thing
we do is to check for pending signals, and if there are any then we
run the signal handler. And if it raises an exception, then we
immediately propagate that exception *instead* of starting to execute
bytecode. This means that e.g. a SIGINT at the wrong moment can "break
the chain" – it can be raised in the middle of our yield from chain,
with the bottom part of the stack abandoned for the garbage collector.

The fix is pretty simple: there's already a special case in
_PyEval_EvalFrameEx where it skips running signal handlers if the next
opcode is SETUP_FINALLY. (I don't see how this accomplishes anything
useful, but that's another story.) If we extend this check to also
skip running signal handlers when the next opcode is YIELD_FROM, then
that closes the hole – now the exception can only be raised at the
innermost stack frame.

This shouldn't have any performance implications, because the opcode
check happens inside the "slow path" after we've already determined
that there's a pending signal or something similar for us to process;
the vast majority of the time this isn't true and the new check
doesn't run at all.