https://bugs.python.org/issue36818

This adds a vector of "search fingers" so that usable_arenas can be kept in sorted order (by number of free pools) via constant-time operations instead of linear search.

This should reduce worst-case time for reclaiming a great many objects from O(A**2) to O(A), where A is the number of arenas.  See bpo-37029.

* Add deprecated-remove information on stream doc

According to the code on streams.py the functions:
``open_connection()``, ``start_server()``, ``open_unix_connection()``,
``start_unix_server()`` are deprecated. I infor that on
documentation.

msilib.Directory.start_component() was passing an extra argument to CAB.gen_id().

Co-authored-by: nanjekyejoannah <nanjekyejoannah@gmail.com>

Also includes other minor test skipping doc improvements.


https://bugs.python.org/issue37094

Include and document co_posonlyargcount and co_kwonlyargcount

If a type's __ipow__ method was implemented in C, attempting to use
the *modulo* parameter would cause crashes.


https://bugs.python.org/issue36379

The ssl module now can dump key material to a keylog file and trace TLS
protocol messages with a tracing callback. The default and stdlib
contexts also support SSLKEYLOGFILE env var.

The msg_callback and related enums are private members. The feature
is designed for internal debugging and not for end users.
Signed-off-by: Christian Heimes <christian@python.org>

TemporaryDirectory.cleanup() failed when non-writeable or non-searchable
files or directories were created inside a temporary directory.

Escape ``\r``, ``\0`` and ``\x1a`` (end-of-file on Windows) in Unicode strings.

It seems to be the only widget label not capitalized.

Automatically replace
tp_print -> tp_vectorcall_offset
tp_compare -> tp_as_async
tp_reserved -> tp_as_async

This is an old feature request that appears from time to time. After a year of experimenting with various introspection capabilities in `typing_inspect` on PyPI, I propose to add these two most commonly used functions: `get_origin()` and `get_args()`. These are essentially thin public wrappers around private APIs: `__origin__` and `__args__`.

As discussed in the issue and on the typing tracker, exposing some public helpers instead of `__origin__` and `__args__` directly will give us more flexibility if we will decide to update the internal representation, while still maintaining backwards compatibility.

The implementation is very simple an is essentially a copy from `typing_inspect` with one exception: `ClassVar` was special-cased in `typing_inspect`, but I think this special-casing doesn't really help and only makes things more complicated.

https://bugs.python.org/issue5028

Bump the removal to 3.9, indicate collections.abc available since 3.3,
replace version-changed directive to deprecated-removed.


https://bugs.python.org/issue36953

when platform lacks a functioning sem_open implementation



https://bugs.python.org/issue36342

https://bugs.python.org/issue5028

As per the PEP and the [audit event raised](https://github.com/python/cpython/blob/13d4e6a4a090031f8214e058ed3c8fd47767e05f/Lib/urllib/request.py#L524) in urllib.request this should be `urllib.Request`

cc: @zooba

https://bugs.python.org/issue36999

This reverts commit 71dc7c5f. Turns out you must have write access for CODEOWNERS to work.

Fix DeprecationWarning introduced in aee19f54


https://bugs.python.org/issue37099

There is no need to clear these immutable objects during shutdown.

From 3.8 async functions used with mock.patch return an `AsyncMock`. `_accept_connection2` is an async function where create_task is also mocked. Don't mock `create_task` so that tasks are created out of coroutine returned by `AsyncMock` and the tasks are completed.


https://bugs.python.org/issue37015