PermissionError can be raised if there are directories in the $PATH that are not accessible
when using posix_spawnp.

Fix sparse file tests of test_tarfile on ppc64le with the tmpfs
filesystem.

Fix the function testing if the filesystem supports sparse files:
create a file which contains data and "holes", instead of creating a
file which contains no data.

tmpfs effective block size is a page size (tmpfs lives in the page
cache). RHEL uses 64 KiB pages on aarch64, ppc64 and ppc64le, only
s390x and x86_64 use 4 KiB pages, whereas the test punch holes of
4 KiB.

test.pythoninfo: Add resource.getpagesize().

* Allow repeated deletion of unittest.mock.Mock attributes

* fixup! Allow repeated deletion of unittest.mock.Mock attributes

* fixup! fixup! Allow repeated deletion of unittest.mock.Mock attributes

It previously deleted Window => Zoom Height by mistake.
(Zoom Height is now on the Options menu).  On Mac, the settings
dialog is accessed via Preferences on the IDLE menu.

Document http.client.parse_headers

Make ssl tests less strict and also accept TLSv1 as system default. The
changes unbreaks test_min_max_version on Fedora 29.
Signed-off-by: Christian Heimes <christian@python.org>

'Untitled' violates the PEP 8 standard for .py files

Tix was deprecated in 3.6 and the doc is wrong.  New users should use ttk.

Added test for weakreferencing a uuid.UUID object.

Add a deprecated warning for the threading.Thread.isAlive() method.

Typo fix for method doc, I'm pretty sure coro is meant, because there's no consumer threads for thread-unsafe queue.

Most probably this piece of doc was copied from `queue.Queue`

There's not BPO bug for this, afaik.

While the introduction of ModuleNotFoundError was fully backwards
compatible on the import API consumer side, folks providing alternative
implementations of `__import__` need to make an update to be
forward compatible with clients that start relying on the new subclass.



https://bugs.python.org/issue35486

This reverts commit 07858894.

The subprocess module can now use the os.posix_spawnp() function,
if it is available, to locate the program in the PATH.

Add a new os.posix_spawnp() function.

The subprocess module can now use the os.posix_spawn() function
in some cases for better performance. Currently, it is only used on macOS
and Linux (using glibc 2.24 or newer) if all these conditions are met:

* executable path contains a directory
* close_fds=False
* preexec_fn, pass_fds, cwd, stdin, stdout, stderr
  and start_new_session parameters are not set
Co-authored-by: Joannah Nanjekye <nanjekyejoannah@gmail.com>

Fix a NULL pointer deref in ssl module. The cert parser did not handle CRL
distribution points with empty DP or URI correctly. A malicious or buggy
certificate can result into segfault.
Signed-off-by: Christian Heimes <christian@python.org>



https://bugs.python.org/issue35746

asyncio.ProactorEventLoop now catchs and logs send errors when the
self-pipe is full: BaseProactorEventLoop._write_to_self() now catchs
and logs OSError exceptions, as done by
BaseSelectorEventLoop._write_to_self().

Handle the case of an empty module name in PYTHONBREAKPOINT.

Fixes a regression introduced in bpo-34756.

Add repr(self) to the log to display the number of pending overlapped
in the log.

IocpProactor.close() now uses time to decide when to log: wait 1
second before the first log, then log every second. Log also the
number of seconds since close() was called.

Show correct number of repeats.

Previously, calling the strftime() method on a datetime object with a
trailing '%' in the format string would result in an exception. However,
this only occured when the datetime C module was being used; the python
implementation did not match this behavior. Datetime is now PEP-399
compliant, and will not throw an exception on a trailing '%'.

IDLE's test_squeezer.SqueezerTest.test_reload, added for issue 35196,
failed on both Gentoo buildbots.

The new functionality of Squeezer.reload() is also tested, along with some general
re-working of the tests in test_squeezer.py.

Format characters "%s" and "%V" in PyUnicode_FromFormat() and "%s" in PyBytes_FromFormat()
no longer read memory past the limit if precision is specified.