Name already in use

Signed-off-by: Olga Matoula <olgamatoula@gmail.com>

…ows (#103939)

…18650)

subprocess's communicate(None) closes stdin of the child process, after
sending no (extra) data. Make asyncio variant do the same.
This fixes issues with processes that waits for EOF on stdin before
continuing.

…3961)

This change has two small parts:

1. a follow-up to gh-103940 with one case I missed
2. adding a missing return that I noticed while working on related code

There were cases where we do unnecessary work for builtin static types. This also simplifies some work necessary for a per-interpreter GIL.

…ile modules (GH-103947)

The prompt will still be incorrect in IDLE on Windows,
as IDLE uses CTRL-D for EOF on all platforms.

Using `datetime.datetime.utcnow()` and `datetime.datetime.utcfromtimestamp()` will now raise a `DeprecationWarning`.

We also have removed our internal uses of these functions and documented the change.

Use datetime.fromisocalendar in _strptime

This unifies the ISO → Gregorian conversion logic and improves handling
of invalid ISO weeks.

…ormationByName when available (GH-103485)

Establish global state and port the following types to heap types:

- DictRemover_Type
- PyCArg_Type
- PyCThunk_Type
- PyCField_Type
- StructParam_Type

…103665)

…ade` in `asyncio`. (#17425)

Co-authored-by: Kumar Aditya <59607654+kumaraditya303@users.noreply.github.com>

This API is one of Unicode creator APIs.

…103684)

Add socket options for source-specific multicast when present as C #defines.

Co-authored-by: Oleg Iarygin <dralife@yandex.ru>

GH-103896)

Co-authored-by: Pablo Galindo <pablogsal@gmail.com>

As discussed in https://discuss.python.org/t/unittest-fail-if-zero-tests-were-discovered/21498/7

It is common for test runner misconfiguration to fail to find any tests,
This should be an error.

Fixes: #62432

)

Co-authored-by: Łukasz Langa <lukasz@langa.pl>
Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
Co-authored-by: Michael Blahay <mblahay@gmail.com>

…d Request (#103855)

Co-authored-by: Łukasz Langa <lukasz@langa.pl>