python / cpython

…om parameter (GH-20541)

tup should be decrefed in the unlikely event of a PyList_New()
failure.

…H-20483)

…GH-20149)

Reference to PySide has been removed has it is for Qt 4, which has reached end of life.

Leave selection when right click within.  This exception to clearing selections when right-clicking was omitted from the previous commit, 4ca060d.  I did not realize that this completely disabled the context menu entries, and  I should have merged a minimal fix immediately.  An automated test should follow.

* bpo-29882: Add an efficient popcount method for integers

* Update 'sign bit' and versionadded in docs

* Add entry to whatsnew document

* Doc: use positive example, mention population count

* Minor cleanups of the core code

* Move popcount_digit closer to where it's used

* Use z instead of self after conversion

* Add 'absolute value' and 'population count' to docstring

* Fix clinic error about missing summary line

* Ensure popcount_digit is portable with 64-bit ints

Co-authored-by: Mark Dickinson <dickinsm@gmail.com>

* Remove unused imports in zoneinfo

* Remove unused variables in zoneinfo

* Remove else after raise

)

* Fix failure of _Py_dg_dtoa to remove trailing zeros

* Add regression test and news entry

* Add explanation about why it's safe to strip trailing zeros

* Make code safer, clean up comments, add change note at top of file

* Nitpick: avoid implicit int-to-float conversion in tests

…just like call() method in the docs (GH-20509)

…encoded-words. (gh-17620)

* bpo-39040: Fix parsing of email headers with encoded-words inside a quoted string.

It is fairly common to find malformed mime headers (especially content-disposition
headers) where the parameter values, instead of being encoded to RFC
standards, are "encoded" by doing RFC 2047 "encoded word" encoding, and
then enclosing the whole thing in quotes.  The processing of these malformed
headers was incorrectly leaving the spaces between encoded words in the decoded
text (whitespace between adjacent encoded words is supposed to be stripped on
decoding).  This changeset fixes the encoded word processing inside quoted strings
(bare-quoted-string) to do correct RFC 2047 decoding by stripping that
whitespace.

…-20494)

Currently modules which are imported early are misreported in coverage. A fix is documented in the devguide, but the fix wasn't being used in CI.

…pt (GH-20492)

Try to make the meaning of platlibdir clear.  The previous wording could
be misinterpreted to suggest that it will be used to find all shared
libraries on the system, and not just Python extensions.  Furthermore,
it was unclear whether it affects third-party (site-packages) extensions
or not.  The new wording tries to make its dual purpose clear,
and provide the additional example of extensions in site-packages.

Update What's New in Python 3.9.

PyThreadState_DeleteCurrent was not removed, but excluded from the limited C API.

…ime (GH-20493)

Recent changes to _datetimemodule broke compilation on mingw; see the comments in this change for details.

FWIW, @corona10: this issue is why `PyType_FromModuleAndSpec` & friends take the `bases` argument at run time.

On macOS, socket.getaddrinfo() no longer uses an internal lock to
prevent race conditions when calling getaddrinfo(). getaddrinfo is
thread-safe is macOS 10.5, whereas Python 3.9 requires macOS 10.6 or
newer.

The lock was also used on FreeBSD older than 5.3, OpenBSD older than
201311 and NetBSD older than 4.

* Add missing sys import
* Get verbose and gc_collect() from test.support
* Remove unused starttime variable.

Issues spotted by pyflakes.

Replace test.support.TESTFN_ENCODING with sys.getfilesystemencoding().

Skip new "racing" socket tests which fail randomly until someone fix
them, to ease analysis of buildbot failures (skip tests which are
known to be broken/unstable).

)

This reverts commit feb0846.

…pe int. (GH-20443)

Previously, the result could have been an instance of a subclass of int.

Also revert bpo-26202 and make attributes start, stop and step of the range
object having exact type int.

Add private function _PyNumber_Index() which preserves the old behavior
of PyNumber_Index() for performance to use it in the conversion functions
like PyLong_AsLong().

* Use a more universal explanation of string interpolation rather than specifically referencing sprintf(), which depends on the reader having a C background.


Co-authored-by: Kyle Stanley <aeros167@gmail.com>

… 3.9 (GH-20473)

test.support module now imports the platform and subprocess modules
lazily to reduce the number of modules imported by
"import test.support".

With this change, the threading module is no longer imported
indirectly by "import test.support".

Use sys.version rather than platform.machine() to detect the Windows
ARM32 buildbot.

…H-20468)

check_impl_detail() of test.support now uses sys.implementation.name,
instead of platform.python_implementation().lower(). This change
prepares test.support to import the platform module lazily.

If ctypes fails to convert the result of a callback or if a ctypes
callback function raises an exception, sys.unraisablehook is now
called with an exception set. Previously, the error was logged into
stderr by PyErr_Print().

This reverts commit 9d17cbf.

```
D:\a\cpython\cpython\Modules\_zoneinfo.c(903,52): warning C4267: '=': conversion from 'size_t' to 'unsigned int', possible loss of data [D:\a\cpython\cpython\PCbuild\_zoneinfo.vcxproj]
D:\a\cpython\cpython\Modules\_zoneinfo.c(904,44): warning C4267: '=': conversion from 'size_t' to 'unsigned int', possible loss of data [D:\a\cpython\cpython\PCbuild\_zoneinfo.vcxproj]
D:\a\cpython\cpython\Modules\_zoneinfo.c(1772,31): warning C4244: '=': conversion from 'ssize_t' to 'uint8_t', possible loss of data [D:\a\cpython\cpython\PCbuild\_zoneinfo.vcxproj]
```

…-20196)

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