* reap_children() now sets environment_altered to True to detect bugs
  using python3 -m test --fail-env-changed
* Replace bare "except:" with "except OSError:" in reap_children()
* Write an unit test for reap_children() using a timeout of 60
  seconds

* Add socketserver.ForkingMixIn.server_close()

bpo-31151: socketserver.ForkingMixIn.server_close() now waits until
all child processes completed to prevent leaking zombie processes.

* Fix test on Windows which doesn't have ForkingMixIn

TestRandomNameSequence.test_process_awareness() now calls
os.waitpid() to avoid leaking a zombie process.

The current test_child_terminated_in_stopped_state() function test
creates a child process which calls ptrace(PTRACE_TRACEME, 0, 0) and
then crash (SIGSEGV). The problem is that calling os.waitpid() in the
parent process is not enough to close the process: the child process
remains alive and so the unit test leaks a child process in a
strange state. Closing the child process requires non-trivial code,
maybe platform specific.

Remove the functional test and replaces it with an unit test which
mocks os.waitpid() using a new _testcapi.W_STOPCODE() function to
test the WIFSTOPPED() path.

Idlelib.calltips.get_argspec now uses inspect.signature instead of inspect.getfullargspec, like help() does.  This improves the signature in the call tip in a few different cases, including builtins converted to provide a signature.  A message is added if the object is not callable, has an invalid signature, or if it has positional-only parameters.
Patch by Louie Lu.

TestModule.test_after_fork() now calls os.waitpid() to read the exit
status of the child process to avoid creating a zombie process.

Add a post_test_cleanup() function which currently only calls
support.reap_children().

PtyTests.run_child() now calls os.waitpid() to read the exit status
of the child process to avoid creating zombie process and leaking
processes in the background.

This fix a regex issue (a missing non-matching group around an 'or'
list) and the specific possible case where a translation is built but
not yet in known by the picker, but not explicitly listing possible
languages in the regex.

bpo-31072: Add a filter argument to zipapp.create_archive (GH-3021)

* Add an include_file argument to allow callers to decide which files to include
* Document the new argument

bpo-31135: Call the parent destroy() method even if the used
attribute doesn't exist.

The LabeledScale.destroy() method now also explicitly clears label
and scale attributes to help the garbage collector to destroy all
widgets.

Initial patch by Victor Stinner.

* Doc: Indicate the language

* Renaming version_switcher to switchers (to add language_switcher).

* Adding language switch.

* Doc switchers: Enhance readability of regex parsing versions.

* Doc switchers: Desambiguate the need of a replace(/\/+$/g, '') by proper naming.

* Doc switchers: py3k can't reach js, it's redirected server-side by nginx.

* Doc switchers: Examples matching actual regexes.

* Doc switchers: Better fallback on unexisting translated version.

Change the shadowing naming, 'value' (Python-ast.c:4652), to 'val'
to prevent the variables from being misused.

* remove hashpos parameter from lookdict functions.
* remove many duplicated code from lookdict functions.

"not only is it .." is the correct form, as opposed to:
"not only it is ..."

Previously any exception was replaced with a KeyError exception.

when other arguments are passed.

* Add in is_mount() call to pathlib.Path similiar to os.path.ismount(path)
* Add tests for is_mount()

Add template as comment. Update existing classes to match outline.
Initial patch by Cheryl Sabella.

Copied over info from .mention-bot

According to the comment, there was previously a call to PyObject_IsSubclass() involved which could fail, but since it was replaced with a call to PyType_IsSubtype(), it can no longer fail.