Name already in use

…file pointers open (GH-100586)

* gh-100585: Fixed open fp bug in the imporlib module

* Added news for gh-100585

Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
Co-authored-by: Stanley <46876382+slateny@users.noreply.github.com>

It was an ancient, modified copy of libffi that has not been in use
since GH-22855.

…00544)

It has had no effect on non-macOS platforms for a long time, and has had
the non-obvious effect of invoking `pkg_config` and not setting
`-DUSING_APPLE_OS_LIBFFI` on macOS since GH-22855.

The define was only used to protect a `#pragma clang diagnostic`
setting, which is already better guarded by `__clang__` anwyay.

…100579)

Remove skipped test.

See discussion on #25326.
Fix is apparently here, but no-one is confident to review and land: #25347.

…ess (#100569)

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

* load_const and load_fast aren't families for now
* Don't decref unmoved names
* Modernize GET_ANEXT
* Modernize GET_AWAITABLE
* Modernize ASYNC_GEN_WRAP
* Modernize YIELD_VALUE
* Modernize POP_EXCEPT (in more than one way)
* Modernize PREP_RERAISE_STAR
* Modernize LOAD_ASSERTION_ERROR
* Modernize LOAD_BUILD_CLASS
* Modernize STORE_NAME
* Modernize LOAD_NAME
* Modernize LOAD_CLASSDEREF
* Modernize LOAD_DEREF
* Modernize STORE_DEREF
* Modernize COPY_FREE_VARS (mark it as done)
* Modernize LIST_TO_TUPLE
* Modernize LIST_EXTEND
* Modernize SET_UPDATE
* Modernize SETUP_ANNOTATIONS
* Modernize DICT_UPDATE
* Modernize DICT_MERGE
* Modernize MAP_ADD
* Modernize IS_OP
* Modernize CONTAINS_OP
* Modernize CHECK_EXC_MATCH
* Modernize IMPORT_NAME
* Modernize IMPORT_STAR
* Modernize IMPORT_FROM
* Modernize JUMP_FORWARD (mark it as done)
* Modernize JUMP_BACKWARD (mark it as done)

…99511)

…a2 changelog (#100525)

…cs (#94627)

Based on the definition of the collections.abc classes, it is more accurate to use "sequence" instead of "container" when describing argparse choices.

A previous attempt at fixing this in #92450 was mistaken; this PR reverts that change.

Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>

`IPV4_RE` includes a `.`, and the `.find(".") == -1` included here is already testing to make sure there's no dot, so this part of the expression is tautological. Instead use more modern `in` syntax to make it clear what the check is doing here. The simplified implementation more clearly matches the wording in RFC 2965.

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

…100473)

Minor formatting fix in documentation

Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>

Previously, the grammar did not accept `float("10")`.
Also implement mdickinson's suggestion of removing the indirection.

…ation (#99990)

…00475)

If you had a directory called index.html or index.htm within a directory, it would cause http.server to return a 404 Not Found error instead of the directory listing. This came about due to not checking that the index was a regular file.

I have also added a test case for this situation.

Automerge-Triggered-By: GH:merwok

Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>