python / cpython

Fix a null pointer dereference in tracemalloc_copy_trace()
of _tracemalloc.
(cherry picked from commit 66c28f5)

Co-authored-by: Yunlongs <lylgood@foxmail.com>

Fix typo in the "Context manager types" section in `typing.rst`.

Automerge-Triggered-By: @gvanrossum
(cherry picked from commit ba06a70)

Co-authored-by: Saiyang Gou <gousaiyang@163.com>

…py (GH-22619) (#22624)

There are two different `SimpleQueue` types imported (from `multiprocessing.queues` and `queue`) in `Lib/test/test_genericalias.py`, the second one shadowing the first one, making the first one not actually tested. Fix by using different names.

Automerge-Triggered-By: @gvanrossum.
(cherry picked from commit b2c0a43)

Co-authored-by: Saiyang Gou <gousaiyang@163.com>

…m_self is kept alive long enough (GH-22670)

(cherry picked from commit 04b8631)

Co-authored-by: Yannick Jadoul <yannick.jadoul@belgacom.net>

Automerge-Triggered-By: @pablogsal
(cherry picked from commit abe244c)

Co-authored-by: linchiwei123 <40888469+linchiwei123@users.noreply.github.com>

Co-authored-by: linchiwei123 <40888469+linchiwei123@users.noreply.github.com>

/af/of/s

Automerge-Triggered-By: @Mariatta
(cherry picked from commit 8197a93)

Co-authored-by: Gaurav Kamath <st0le@users.noreply.github.com>

…H-22655) (GH-22656)

The test now waits until all threads complete to avoid leaking
running threads.

Also, use regular threads rather than daemon threads.

(cherry picked from commit 13ff396)

…utating global state (GH-22652) (GH-22653)

(cherry picked from commit 47ecfd8)

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

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

(cherry picked from commit 0ff8a3b)

Co-authored-by: abdo <abd.nh25@gmail.com>

…to limited API (GH-22621)

(cherry picked from commit 637a09b)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

…-21734) (GH-22039)

(cherry picked from commit 5f0769a)

Co-authored-by: Nathan M <nathanmaynes@gmail.com>

…GH-22355)

(cherry picked from commit eb38c6b)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

(cherry picked from commit f25323a)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

GH-22612)

Co-authored-by: Batuhan Taskaya <batuhanosmantaskaya@gmail.com>

Automerge-Triggered-By: @pablogsal

…already imported (GH-22595) (GH-22609)

(cherry picked from commit 4a9f82f)

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

(cherry picked from commit 77f0a23)

Co-authored-by: Mikhail Golubev <qsolo825@gmail.com>

(cherry picked from commit bfe6e03)

Co-authored-by: Erlend Egeberg Aasland <erlend.aasland@innova.no>

…sing gcc>9 (GH-22598)

(cherry picked from commit 27ac19c)

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

This fixes the test failure with Tk 6.8.10 which is caused by changes to how Tk rounds the `from`, `to` and `tickinterval` arguments. This PR uses `noconv` if the patchlevel is greater than or equal to 8.6.10 (credit to Serhiy for this idea as it is much simpler than what I previously proposed).

Going into more detail for those who want it, the Tk change was made in [commit 591f68c](tcltk/tk@591f68c) and means that the arguments listed above are rounded relative to the value of `from`. However, when rounding the `from` argument ([line 623](https://github.com/tcltk/tk/blob/591f68cb382525b72664c6fecaab87742b6cc87a/generic/tkScale.cGH-L623)), it is rounded relative to itself (i.e. rounding `0`) and therefore the assigned value for `from` is always what is given (no matter what values of `from` and `resolution`).

Automerge-Triggered-By: @pablogsal
(cherry picked from commit aecf036)

Co-authored-by: E-Paine <63801254+E-Paine@users.noreply.github.com>

…21602)

`site.getusersitepackages()` returns the location of the user-specific site-packages directory
even when the user-specific site-packages is disabled.

```
$ python -s -m site
sys.path = [
    '/home/user/conda/lib/python37.zip',
    '/home/user/conda/lib/python3.7',
    '/home/user/conda/lib/python3.7/lib-dynload',
    '/home/user/conda/lib/python3.7/site-packages',
]
USER_BASE: '/home/user/.local' (exists)
USER_SITE: '/home/user/.local/lib/python3.7/site-packages' (doesn't exist)
ENABLE_USER_SITE: False
```

It was not practical to prevent the function from returning None if user-specific site-packages are disabled, since there are other uses of the function which are relying on this behaviour (e.g. `python -m site`).
(cherry picked from commit 35f041d)

Co-authored-by: Phil Elson <pelson.pub@gmail.com>

…CJK codec tests (GH-22566)

(cherry picked from commit 2ef5caa)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

…perator is called (GH-22505)

(cherry picked from commit d02d824)

Co-authored-by: Brett Cannon <brett@python.org>

)

Call urllib.request.urlcleanup() to reset the global
urllib.request._opener.
(cherry picked from commit 1fce240)

Co-authored-by: Victor Stinner <vstinner@python.org>

Python 3.9.0

Remove mention of space in "remove multiple items from list".
(cherry picked from commit 060937d)

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

…-22560)

(cherry picked from commit 9a76426)

Co-authored-by: Erlend Egeberg Aasland <erlend.aasland@innova.no>

… avoids modifying an XML tree while iterating over it. (GH-22464) (GH-22554)

(cherry picked from commit 40db798)

Co-authored-by: scoder <stefan_ml@behnel.de>

Co-authored-by: scoder <stefan_ml@behnel.de>

…) (GH-22550)

Enable recursion checks which were disabled when get __bases__ of
non-type objects in issubclass() and isinstance() and when intern
strings. It fixes a stack overflow when getting __bases__ leads
to infinite recursion.

Originally recursion checks was disabled for PyDict_GetItem() which
silences all errors including the one raised in case of detected
recursion and can return incorrect result. But now the code uses
PyDict_GetItemWithError() and PyDict_SetDefault() instead.
(cherry picked from commit 9ece9cd)

Multiple typo fixes in code comments

Automerge-Triggered-By: @Mariatta
(cherry picked from commit 619f980)

Co-authored-by: Manan Kumar Garg <62146744+MananKGarg@users.noreply.github.com>

(cherry picked from commit 62e40d8)

Co-authored-by: Ethan Furman <ethan@stoneleaf.us>

Fix the compiler warning:

format specifies type `wint_t` (aka `int`) but the argument has type `unsigned int`
(cherry picked from commit c322948)

Co-authored-by: Samuel Marks <807580+SamuelMarks@users.noreply.github.com>

…22544)

(cherry picked from commit 2cc6dc9)

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

…22544)

(cherry picked from commit 2cc6dc9)

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