Add threading.Thread.__del__() method to ensure that the thread state
lock is removed from the _shutdown_locks list when a thread
completes.

Because mod, func, class, etc all share one namespace, :func:time creates a link to the time module doc page rather than the time.time function.

* Add a minor `Fraction.__hash__` optimization that got lost in the shuffle.

Document the optimizations.

The fact that keyword names are strings is now part of the vectorcall and `METH_FASTCALL` protocols. The biggest concrete change is that `_PyStack_UnpackDict` now checks that and raises `TypeError` if not.

CC @markshannon @vstinner 


https://bugs.python.org/issue37540

Without indendation, seems like strcpy line is parallel to `if` condition.

Base PR for other PRs that want to play with `type.__call__` such as #13930 and #14589.

The author is really @markshannon I just made the PR.


https://bugs.python.org/issue37207



Automerge-Triggered-By: @encukou

Replace usage of the obscure PEM_read_bio_X509_AUX with the more standard PEM_read_bio_X509 (GH-15303)



X509_AUX is an odd, note widely used, OpenSSL extension to the X509 file format. This function doesn't actually use any of the extra metadata that it parses, so just use the standard API.

Automerge-Triggered-By: @tiran

faulthandler now allocates a dedicated stack of SIGSTKSZ*2 bytes,
instead of just SIGSTKSZ bytes. Calling the previous signal handler
in faulthandler signal handler uses more than SIGSTKSZ bytes of stack
memory on some platforms.

FreeBSD implementation of poll(2) restricts the timeout argument to be
either zero, or positive, or equal to INFTIM (-1).

Unless otherwise overridden, socket timeout defaults to -1. This value
is then converted to milliseconds (-1000) and used as argument to the
poll syscall. poll returns EINVAL (22), and the connection fails.

This bug was discovered during the EINTR handling testing, and the
reproduction code can be found in
https://bugs.python.org/issue23618 (see connect_eintr.py,
attached). On GNU/Linux, the example runs as expected.

This change is trivial:
If the supplied timeout value is negative, truncate it to -1.

https://bugs.python.org/issue37826

Co-Authored-By: Joannah Nanjekye <joannah.nanjekye@ibm.com>

The documented definition was much broader than the real one:
there are tons of characters with general category "Other",
and we don't (and shouldn't) treat most of them as whitespace.

Rewrite the definition to agree with the comment on
_PyUnicode_IsWhitespace, and with the logic in makeunicodedata.py,
which is what generates that function and so ultimately governs.

Add suitable breadcrumbs so that a reader who wants to pin down
exactly what this definition means (what's a "bidirectional class"
of "B"?) can do so.  The `unicodedata` module documentation is an
appropriate central place for our references to Unicode's own copious
documentation, so point there.

Also add to the isspace() test a thorough check that the
implementation agrees with the intended definition.

Fix the implementation of curses addch(str, color_pair): pass the
color pair to setcchar(), instead of always passing 0 as the color
pair.

Fix the following warning with GCC 4.8.5:
Objects/obmalloc.c: warning: ‘no_sanitize_thread’ attribute directive ignored

Commit b1263d5a causes GCC 9.1.0 to
give a warning in Objects/descrobject.c.

Much like the lower-level logic in commit ef2af1ad, we had
4 copies of this logic, written in a couple of different ways.
They're all implementing the same standard, so write it just once.

* bpo-37256: Wording in Request class docs

* 📜🤖 Added by blurb_it.

* Update Misc/NEWS.d/next/Documentation/2019-07-16-14-48-12.bpo-37256.qJTrBb.rst
Co-Authored-By: Kyle Stanley <aeros167@gmail.com>

https://bugs.python.org/issue37814:

> The empty tuple syntax in type annotations, `Tuple[()]`, is not obvious from the examples given in the documentation (I naively expected `Tuple[]` to work); it has been documented in PEP 484 and in mypy, but not in the documentation for the typing module.


https://bugs.python.org/issue37814

Add error number 113 EHOSTUNREACH to get_socket_conn_refused_errs()
of test.support.

The `expand` option was introduced in 2000 in commit fad27aee.
It appears to have been always set since it was committed, and
what it does is tell the code to do something essential.  So,
just always do that, and cut the option.

Also cut the `linebreakprops` option, which isn't consulted anymore.

This file started life as a script, before conversion to a
`unittest` test file.  Clear out some legacies of that conversion
that are a bit confusing about how it works.

Most notably, it's unlikely there's still a good reason to try
to recover from `unicodedata` failing to import -- as there was
when that logic was first added, when the module was very new.
So take that out entirely.  Keep `self.db` working, though, to
avoid a noisy diff.

This causes them to be collapsed by default in diffs shown on GitHub.




https://bugs.python.org/issue37760



Automerge-Triggered-By: @benjaminp

There were 10 copies of this, and almost as many distinct versions of
exactly how it was written.  They're all implementing the same
standard.  Pull them out to the top, so the more interesting logic
that remains becomes easier to read.

- Remove use of replacement text in the script
- Make use of the pyvenv.cfg file for prompt value.
- Add parameters to allow more flexibility
- Make use of the current path, and assumptions about where env puts things, to compensate
- Make the script a bit more 'idiomatic' Powershell
- Add script documentation (Get-Help .\.venv\Scripts\Activate.ps1 shows PS help page now