python/cpython

…GH-17647)

Multiprocessing and concurrent.futures tests now stop the resource
tracker process when tests complete.

Add ResourceTracker._stop() method to
multiprocessing.resource_tracker.

Add _cleanup_tests() helper function to multiprocessing.util: share
code between multiprocessing and concurrent.futures tests.

(cherry picked from commit 9707e8e)

… CALL (GH-17645) (GH-17649)

… 
Co-Authored-By: Pablo Galindo <Pablogsal@gmail.com>
(cherry picked from commit 50d4f12)

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





https://bugs.python.org/issue39080

…acOS Catalina (GH-17636)

Co-authored-by: tirkarthi
(cherry picked from commit 1988344)

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

…nt()'s *reuse_address* parameter (GH-17595). (#17630)

(cherry picked from commit f501db2)

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

Commit 6b5b013 ("bpo-26978: Implement pathlib.Path.link_to (Using
os.link) (GH-12990)") introduced a new link_to method in pathlib. However,
this makes pathlib crash when the 'os' module is missing a 'link' method.

Fix this by checking for the presence of the 'link' method on pathlib
module import, and if it's not present, turn it into a runtime error like
those emitted when there is no lchmod() or symlink().

Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
(cherry picked from commit 092435e)

Co-authored-by: Toke Høiland-Jørgensen <toke@redhat.com>

Automerge-Triggered-By: @gvanrossum
(cherry picked from commit b08d3f7)

Co-authored-by: Guido van Rossum <guido@python.org>

… (GH-17600)

(cherry picked from commit 5936a4c)

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

Co-Authored-By: Victor Stinner <vstinner@python.org>
(cherry picked from commit 95826c7)

Co-authored-by: Inada Naoki <songofacandy@gmail.com>

(cherry picked from commit 8289e27)

Co-authored-by: Xtreak <tir.karthi@gmail.com>

… for if_stmt (GH-17582) (GH-17589)

When parsing an "elif" node, lineno and col_offset of the node now point to the "elif" keyword and not to its condition, making it consistent with the "if" node.

https://bugs.python.org/issue39031

Automerge-Triggered-By: @pablogsal
(cherry picked from commit 025a602)

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

…-17569)

* bpo-39022, bpo-38594: Sync with importlib_metadata 1.3 including improved docs for custom finders and better serialization support in EntryPoints.

* 📜🤖 Added by blurb_it.

* Correct module reference
(cherry picked from commit b7a0109)

Co-authored-by: Jason R. Coombs <jaraco@jaraco.com>

(cherry picked from commit d0802d0)

Co-authored-by: Steve Dower <steve.dower@python.org>

Automerge-Triggered-By: @pablogsal

Python 3.8.1rc1

(cherry picked from commit abdeb57)

Co-authored-by: Steve Dower <steve.dower@python.org>

…17538)

(cherry picked from commit c18b805)

Co-authored-by: Tim Gates <tim.gates@iress.com>

This has happened on some versions of Ubuntu.
(cherry picked from commit bbc4162)

Co-authored-by: JohnnyNajera <58344607+JohnnyNajera@users.noreply.github.com>

(cherry picked from commit 232689b)

Co-authored-by: JohnnyNajera <58344607+JohnnyNajera@users.noreply.github.com>

Also allows winreg.CloseKey() to accept same types as other functions.
(cherry picked from commit ee17e37)

Co-authored-by: Steve Dower <steve.dower@python.org>

…se a deprecation warning (GH-17540)

(cherry picked from commit b8cbe74)

Co-authored-by: Steve Dower <steve.dower@python.org>

…H-17530)

* Issue 38992: avoid fsum test failure

* Add NEWS entry
(cherry picked from commit bba873e)

Co-authored-by: Mark Dickinson <mdickinson@enthought.com>

(cherry picked from commit e89e159)

Co-authored-by: Steve Dower <steve.dower@python.org>

…H-9518) (#17531)

(cherry picked from commit d219cc4)

Co-authored-by: Yury Selivanov <yury@magic.io>

GH-17311) (#17529)

(cherry picked from commit ab513a3)

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

Fix asyncio when the ssl module is missing: only check for
ssl.SSLSocket instance if the ssl module is available.
(cherry picked from commit 82b4950)

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

array.array: Document that tostring() and fromstring() deprecated
aliases will be removed in Python 3.9.

Fix test_pty: if the process is the session leader, closing the
master file descriptor raises a SIGHUP signal: simply ignore SIGHUP
when running the tests.
(cherry picked from commit a1838ec)

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

This means a clearer message is now shown when patch.object is called with two string arguments, rather than a class and a string argument.
(cherry picked from commit cd90a52)

Co-authored-by: Elena Oat <oat.elena@gmail.com>

…espace (GH-17421)

https://bugs.python.org/issue38673
(cherry picked from commit 109fc27)

Co-authored-by: Batuhan Taşkaya <47358913+isidentical@users.noreply.github.com>

…H-17504)

Fix a potential IndexError when passing an empty value to the message-id
parser. Instead, HeaderParseError should be raised.
(cherry picked from commit 3ae4ea1)

Co-authored-by: Abhilash Raj <maxking@users.noreply.github.com>

…H-17503)

This adds a new InvalidMessageID token to the email header parser which can be
used to represent invalid message-id headers in the parse tree.
(cherry picked from commit 68157da)

Co-authored-by: Abhilash Raj <maxking@users.noreply.github.com>