python / cpython

In the "Sequences (Tuples/Lists)" section, add
"How do you remove multiple items from a list".
(cherry picked from commit 5b0181d)

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

…9337)

(cherry picked from commit ff9147d)

Co-authored-by: Jan Mazur <16736821+mzr@users.noreply.github.com>

The existing line is easily read as being incomplete.
(cherry picked from commit 00eb063)

Co-authored-by: Emmanuel Arias <eamanu@yaerobi.com>

'Python Shell' may have contributed to some beginners confusing 'IDLE' with ' Python'.
(cherry picked from commit 05cc881)

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

…ain_run_module (GH-21956) (#22398)

Closes bpo issue 41602.
(cherry picked from commit a68a2ad)

Co-authored-by: Thomas Grainger <tagrain@gmail.com>

Python 3.8.6

(cherry picked from commit 9c4eac7)

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

(cherry picked from commit 62e40d8)

Co-authored-by: Ethan Furman <ethan@stoneleaf.us>

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

`StrEnum` does not exist in 3.8, so use original `(str, enum.Enum)` bases.

The marker was added to the language in 3.8 and
3.7 only gets security patches.
(cherry picked from commit 40a0625)

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

…2322)

GH- [bpo-41815](): SQLite: fix segfault if backup called on closed database

Attempting to backup a closed database will trigger segfault:

```python
import sqlite3
target = sqlite3.connect(':memory:')
source = sqlite3.connect(':memory:')
source.close()
source.backup(target)
```
(cherry picked from commit bfee9fa)

Co-authored-by: Peter McCormick <peter@pdmccormick.com>

…H-22326)

(cherry picked from commit ae0d2a3)

Co-authored-by: Ethan Furman <ethan@stoneleaf.us>

… (GH-22310)

Doc/requirements.txt becomes the reference for packages and package
versions needed to build the Python documentation.

* Doc/Makefile now uses Doc/requirements.txt
* .travis.yml now uses "make env" of Doc/Makefile
* Update Sphinx to version 2.4.4

(cherry picked from commit 8394500)
(cherry picked from commit 9e73cac)

* bpo-35293: Remove RemovedInSphinx40Warning

* Update Misc/NEWS.d/next/Documentation/2020-09-12-17-37-13.bpo-35293._cOwPD.rst

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

* bpo-35293: Apply Victor's review

Co-authored-by: Victor Stinner <vstinner@python.org>
(cherry picked from commit 6595cb0)

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

…H-22300)

Use an unique identifier for the different grammars documented using
the Sphinx productionlist markup.

productionlist markups of the same grammar, like "expressions" or
"compound statements", use the same identifier "python-grammar".
(cherry picked from commit 8af239e)

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

(cherry picked from commit 1c5d1d7)

fix default `_missing_` to return `None` instead of raising a `ValueError`
Co-authored-by: Andrey Darascheka <andrei.daraschenka@leverx.com>.
(cherry picked from commit c95ad7a)

Co-authored-by: Ethan Furman <ethan@stoneleaf.us>

(cherry picked from commit fc23a94)

Co-authored-by: Ethan Furman <ethan@stoneleaf.us>

fix bug that let Enums be extended via multiple inheritance
(cherry picked from commit 3064dbf)

Co-authored-by: Ethan Furman <ethan@stoneleaf.us>

EnumMeta double-checks that `__repr__`, `__str__`, `__format__`, and `__reduce_ex__` are not the same as `object`'s, and replaces them if they are -- even if that replacement was intentionally done in the Enum being constructed.  This patch fixes that.

Automerge-Triggered-By: @ethanfurman
(cherry picked from commit 22415ad)

Co-authored-by: Ethan Furman <ethan@stoneleaf.us>

(cherry picked from commit bff01f3)

Co-authored-by: Ethan Furman <ethan@stoneleaf.us>

…H-22260)

From "can produce difference information in various formats ..."
to " can produce information about file differences in various formats ..."

Automerge-Triggered-By: @Mariatta
(cherry picked from commit 5531269)

Co-authored-by: Mandeep <mandeep052@gmail.com>

…GH-22234) (GH-22256)

Revise example of "continue" in the tutorial documentation
(cherry picked from commit 7bcc645)

Co-authored-by: Neeraj Samtani <neerajjsamtani@gmail.com>

Co-authored-by: Neeraj Samtani <neerajjsamtani@gmail.com>

* UPPER_CASE preferred as enum members are constants
(cherry picked from commit 542e1df)

Co-authored-by: Ethan Furman <ethan@stoneleaf.us>

…H-22154)

NuGet automatically includes .props file from the build directory in the
target using the package, but only if the .props file has the correct
name: it must be $(id).props

Rename python.props correspondingly in all the nuspec variants. Also
keep python.props as it were for backward compatibility.
(cherry picked from commit 7c11a9a)

Co-authored-by: Václav Slavík <vaclav@slavik.io>

(cherry picked from commit 7dbbea7)

Co-authored-by: Ned Deily <nad@python.org>

On this paragrapah the clarification about IIS7 seems there's not
connection beacuase is in other sentence. Move the punctuation
to connect both the last sentence with the information in the
parenthesis.

I think the NEWS is not necessary here.

Automerge-Triggered-By: @ericvsmith
(cherry picked from commit 94bfdee)

Co-authored-by: Emmanuel Arias <eamanu@yaerobi.com>

* bpo-37479: on Enum subclasses with mixins, __format__ uses overridden __str__.
(cherry picked from commit 2f19e82)

Co-authored-by: thatneat <thatneat@users.noreply.github.com>

…file.* functions (GH-21763) (GH-22226)

(cherry picked from commit b48389d)

(cherry picked from commit c753306)

Co-authored-by: Norbert Cyran <cyran.norbert97@gmail.com>

Co-authored-by: Norbert Cyran <cyran.norbert97@gmail.com>

Fix a race condition in the call_soon_threadsafe() method of
asyncio.ProactorEventLoop: do nothing if the self-pipe socket has
been closed.
(cherry picked from commit 1b0f0e3)

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