python / cpython

…GH-18117) (GH-18151)

When communicate() is called in a loop, it crashes when the child process
has already closed any piped standard stream, but still continues to be running

Co-authored-by: Andriy Maletsky <andriy.maletsky@gmail.com>.
(cherry picked from commit d3ae95e)

Co-authored-by: Alex Rebert <alex@forallsecure.com>





https://bugs.python.org/issue35182



Automerge-Triggered-By: @gpshead

(cherry picked from commit 7142df5)

Co-authored-by: Shanavas M <shanavas.m2@gmail.com>

GH-18118)

* bpo-39421: Fix posible crash in heapq with custom comparison operators

* fixup! bpo-39421: Fix posible crash in heapq with custom comparison operators

* fixup! fixup! bpo-39421: Fix posible crash in heapq with custom comparison operators
(cherry picked from commit 79f89e6)

Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>

IDLE does not pass a non-default _synchre in any of its calls to
pyparse.find_good_parse_start.
(cherry picked from commit f9e07e1)

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
(cherry picked from commit 2e43b64)

Co-authored-by: Zackery Spytz <zspytz@gmail.com>

https://bugs.python.org/issue39425

Automerge-Triggered-By: @pablogsal
(cherry picked from commit 14d80d0)

Co-authored-by: Dong-hee Na <donghee.na92@gmail.com>

Co-authored-by: Dong-hee Na <donghee.na92@gmail.com>

Update os.unsetenv() documentation: it is not available on Windows.
(cherry picked from commit f84f65b)

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

(cherry picked from commit 47be7d0)

Co-authored-by: Keith Erskine <toastie604@gmail.com>

Co-authored-by: Keith Erskine <toastie604@gmail.com>

Fix comments and add tests for editor newline_and_indent_event method.
Remove unused None default for function parameter of pyparse find_good_parse_start method
and code triggered by that default.

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
(cherry picked from commit ec64640)

Co-authored-by: Cheryl Sabella <cheryl.sabella@gmail.com>

(cherry picked from commit 8698b34)

Co-authored-by: Carl Friedrich Bolz-Tereick <cfbolz@gmx.de>

…H-18054)

(cherry picked from commit 8d57a41)

Co-authored-by: Peter Bittner <django@bittner.it>

(cherry picked from commit a96e06d)

Co-authored-by: Andrew Svetlov <andrew.svetlov@gmail.com>

Mention that the function implicitly creates new event loop only if called from the main thread.
(cherry picked from commit 2c49bec)

Co-authored-by: Andrew Svetlov <andrew.svetlov@gmail.com>

…eed (GH-16630)

Some objects like Py_None are not initialized with conventional means
that prepare the circular linked list pointers, leaving them unlinked
from the rest of the objects. For those objects, NULL pointers does
not mean that they are freed, so we need to skip the check in those
cases.
(cherry picked from commit 36e33c3)

Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>

Update Misc/valgrind-python.supp to suppress the false alarm.
(cherry picked from commit d8ef644)

Co-authored-by: Zackery Spytz <zspytz@gmail.com>

(cherry picked from commit 558f078)

Co-authored-by: Michael Haas <micha2718l@gmail.com>

(cherry picked from commit ef8844f)

Co-authored-by: Grant Jenks <grant.jenks@gmail.com>

Co-authored-by: Grant Jenks <grant.jenks@gmail.com>

The previous double colon was wrongly place directly after Therefore.
Which produced a block without syntax highlighting. This fixes it
by separating the double colon from the text. As a result, sphinx now
properly highlights the python code.

https://bugs.python.org/issue39348
(cherry picked from commit fad8b56)

Co-authored-by: Oz N Tiram <oz.tiram@noris.de>

…H-17932) (GH-18016)

Since 3.7 `successful` raises a `ValueError` as explained in the next text block from the documentation:

_Changed in version 3.7: If the result is not ready, ValueError is raised instead of AssertionError._

No issue associated with this PR.
Should be backported in 3.7 and 3.8.
(cherry picked from commit dc0284e)


Co-authored-by: Antoine <43954001+awecx@users.noreply.github.com>

Automerge-Triggered-By: @pitrou

(cherry picked from commit b4cdb3f)

Co-authored-by: Kyle Pollina <kylepollina@protonmail.com>

Specify that sys.float_info.min is only the minimum normalized float.
(cherry picked from commit 9362f85)

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

…e. (GH-17960) (GH-17970)

Although the underlying libffi issue remains open, adding these
checks have caused problems in third-party projects which are in
widespread use. See the issue for examples.

The corresponding tests have also been skipped.
(cherry picked from commit c12440c)

…n the AST docs (GH-17172)

Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
(cherry picked from commit 6680f4a)

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

Copying property objects results in a TypeError. Steps to reproduce:

```
>>> import copy
>>> obj = property()
>>> copy.copy(obj)
````

This affects both shallow and deep copying.
My idea for a fix is to add property objects to the list of "atomic" objects in the copy module.
These already include types like functions and type objects.

I also added property objects to the unit tests test_copy_atomic and test_deepcopy_atomic. This is my first PR, and it's highly likely I've made some mistake, so please be kind :)

https://bugs.python.org/issue38293
(cherry picked from commit 9f3fc6c)

Co-authored-by: Guðni Natan Gunnarsson <1493259+GudniNatan@users.noreply.github.com>

* Add test cases for dataclasses.

* Add test for repr output of field.
* Add test for ValueError to be raised when both default and default_factory are passed.
(cherry picked from commit eef1b02)


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

Automerge-Triggered-By: @ericvsmith

(cherry picked from commit 2e6a8ef)

Co-authored-by: Dong-hee Na <donghee.na92@gmail.com>

GH-17780)

Correctly parenthesize filter-based statements that contain lambda
expressions in lib2to3.
(cherry picked from commit b821173)

Co-authored-by: Dong-hee Na <donghee.na92@gmail.com>

…nabledFor (GH-17689) (GH-17898)

(cherry picked from commit 950c679)

(cherry picked from commit ca94677)

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

(cherry picked from commit f4800b8)

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

https://bugs.python.org/issue39041

Automerge-Triggered-By: @zooba
(cherry picked from commit b1ce22d)

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

(cherry picked from commit a76ba36)

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

(cherry picked from commit d6c08db)

Co-authored-by: Tal Einat <taleinat+github@gmail.com>

(cherry picked from commit abc0c4f)

Co-authored-by: HongWeipeng <961365124@qq.com>

Signed-off-by: Oleg Höfling <oleg.hoefling@gmail.com>
(cherry picked from commit e6ae90d)

Co-authored-by: Oleg Höfling <hoefling@users.noreply.github.com>