[issue28134] socket.socket(fileno=fd) does not work as documented

[Christian Heimes]

Christian Heimes  added the comment:


New changeset 2e0ecde8d74f5fc0e3e3e39216975cc70efc4796 by Christian Heimes in 
branch 'master':
bpo-28134: Ignore proto in unknown socket test (GH-5435)
https://github.com/python/cpython/commit/2e0ecde8d74f5fc0e3e3e39216975cc70efc4796


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[issue32705] Current Android does not have posix_spawn

[Gregory P. Smith]

Gregory P. Smith  added the comment:

likely.  i don't have an android build, please reopen if there are still 
android posix_spawn related build issues.

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[issue20104] expose posix_spawn(p)

[Gregory P. Smith]

Change by Gregory P. Smith :


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[issue20104] expose posix_spawn(p)

[Gregory P. Smith]

Change by Gregory P. Smith :


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[issue31961] subprocess._execute_child doesn't accept a single PathLike argument for args

[Gregory P. Smith]

Gregory P. Smith  added the comment:

Thanks for the PR!  I accepted it as this makes sense as a feature.

 pathlib all the things! 

I think the code be polished up a bit to not rely on catching TypeError but 
this gets the feature in before the 3.7 feature freeze (just).  If further 
changes are needed or bugs are found, they can be addressed during the 3.7 
betas. :)

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Re: Where has the practice of sending screen shots as source code come from?

[Steven D'Aprano]

On Mon, 29 Jan 2018 21:32:11 -0800, Rustom Mody wrote:

> On Sunday, January 28, 2018 at 8:37:11 PM UTC+5:30, Steven D'Aprano
> wrote:
>> I'm seeing this annoying practice more and more often. Even for trivial
>> pieces of text, a few lines, people post screenshots instead of copying
>> the code.
>> 
>> Where has this meme come from? It seems to be one which inconveniences
>> *everyone* involved:
> 
> Have you heard of the “Dutch Reach¨?
> http://www.telegraph.co.uk/travel/news/the-dutch-reach-how-opening-car-
door-like-the-dutch-could-save-lives-cycling/

Ah, yes, the Dutch Reach. That would be like the French Pox (which isn't 
French), the Spanish Flu (that didn't start in Spain), the Jerusalem 
artichoke (which is neither an artichoke nor from Jerusalem), and the 
turkey (the bird, which has nothing to do with Turkey, the country).

This technique is neither taught nor commonly used used by the Dutch: 
apparently some Americans decided that because the Netherlands has a lot 
of cyclists, they'll say its Dutch.

https://en.wikipedia.org/wiki/Dooring

So let me see if I understand the logic... 

Rather than teach people to *explicitly* check their mirror to make sure 
it is safe before opening the car door, teach them a difficult, awkward 
maneuver which they're guaranteed to stop using the second the driving 
test is over, that merely points their head more-or-less vaguely in the 
right direction to *maybe* notice on-coming cyclists *if and only if* 
they're actually paying attention.

I can see this falls under the problem solving technique, "We must do 
something, this is something, therefore we must do it!"

The sorts of people who can't remember to check their mirror before 
opening the car door aren't the sort who will remember to use this 
awkward technique. And for those who can remember to do so, it is simpler 
and more effective to explicitly check your mirror (as the Dutch actually 
do).


> Presumably it goes beyond the 'inconvenience' of images-instead-of-text
> to the saving-of-lives…

I have no idea what connection you think is between this and emailing 
pictures of source code in place of source code.


-- 
Steve

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[issue32705] Current Android does not have posix_spawn

[Chih-Hsuan Yen]

Chih-Hsuan Yen  added the comment:

With https://github.com/python/cpython/pull/5418 merged, I guess this issue can 
be closed?

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[issue31961] subprocess._execute_child doesn't accept a single PathLike argument for args

[Gregory P. Smith]

Change by Gregory P. Smith :


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versions:  -Python 3.6, Python 3.8

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[issue32723] codecs.open silently ignores argument errors

[Josh Rosenberg]

Josh Rosenberg  added the comment:

On both Py2 and Py3, calling codecs.open without passing an encoding argument 
is equivalent to adding 'b' to the mode string and calling the built-in open 
function directly; it returns a plain binary mode file object. The errors 
parameter is meaningless because no decoding is being performed (there will 
never be any errors to handle).

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[issue31961] subprocess._execute_child doesn't accept a single PathLike argument for args

[Gregory P. Smith]

Gregory P. Smith  added the comment:


New changeset dd42cb71f2cb02f3a32f016137b12a146bc0d0e2 by Gregory P. Smith 
(Anders Lorentsen) in branch 'master':
bpo-31961: subprocess now accepts path-like args (GH-4329)
https://github.com/python/cpython/commit/dd42cb71f2cb02f3a32f016137b12a146bc0d0e2


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[issue32441] os.dup2 should return the new fd

[Benjamin Peterson]

Change by Benjamin Peterson :


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[issue30117] test_lib2to3.test_parser.test_all_project_files() fails

[Benjamin Peterson]

Change by Benjamin Peterson :


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[issue30117] test_lib2to3.test_parser.test_all_project_files() fails

[Benjamin Peterson]

Benjamin Peterson  added the comment:


New changeset 14e976e00e65bf343ba0fca016c3c9132a843daf by Benjamin Peterson 
(Eric Appelt) in branch 'master':
closes bpo-30117: fix lib2to3 ParserIdempotency test (GH-1242)
https://github.com/python/cpython/commit/14e976e00e65bf343ba0fca016c3c9132a843daf


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Re: New to Python and understanding problem

[Michelle Konzack]

Good morning,

Am 2018-01-30 hackte careenjosep...@gmail.com in die Tasten:
> One contributing factor to this problem is the artificial environment that
> online courses provide to students. Students are usually typing code into
> a web page that contains instructions and hints. This is not how real
> programming gets done. So when the course is over and it’s time to use a
> real programming environment, students feel lost without the environment
> that they are accustomed to.

I started coding in 1984 with ASM on a 8049 Microcontroller and since
then, I was always looking into other sourcecodes to understand how
something is working.

I have no clue about Python, but I feel very well/comfortable with it. I
think, it is not very complicate to learn, because python is very logic
structured.

This is why I just go the idea of bug-hunting in the blueman app.

Thanks in avance

-- 
Michelle KonzackMiila ITSystems @ TDnet
GNU/Linux Developer 00372-54541400

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[issue32721] test_hashlib fails if _md5 is not built

[Benjamin Peterson]

Benjamin Peterson  added the comment:


New changeset 6b2bbcc4cca414f35f67caa4674f59f41ff638ea by Benjamin Peterson 
(Miss Islington (bot)) in branch '3.6':
closes bpo-32721: do not fail test_hashlib if _md5 isn't available (GH-5441) 
(GH-5442)
https://github.com/python/cpython/commit/6b2bbcc4cca414f35f67caa4674f59f41ff638ea


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Re: New to Python and understanding problem

[careenjoseph36]

One contributing factor to this problem is the artificial environment that 
online courses provide to students. Students are usually typing code into a web 
page that contains instructions and hints. This is not how real programming 
gets done. So when the course is over and it’s time to use a real programming 
environment, students feel lost without the environment that they are 
accustomed to.
https://www.besanttechnologies.com/training-courses/salesforce-training-institute-in-chennai
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[issue21417] Compression level for zipfile

[Gregory P. Smith]

Change by Gregory P. Smith :


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versions: +Python 3.7 -Python 3.5

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[issue32102] Add "capture_output=True" option to subprocess.run

[Gregory P. Smith]

Gregory P. Smith  added the comment:

Thanks Bo.  I agree with Nick, this is a readability win for a common annoying 
to type otherwise case.

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[issue32102] Add "capture_output=True" option to subprocess.run

[Gregory P. Smith]

Gregory P. Smith  added the comment:


New changeset ce0f33d04528fcafc673a8707871f8430d8f7ce8 by Gregory P. Smith (Bo 
Bayles) in branch 'master':
bpo-32102 Add "capture_output=True" to subprocess.run (GH-5149)
https://github.com/python/cpython/commit/ce0f33d04528fcafc673a8707871f8430d8f7ce8


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[issue28914] selectmodule build fails

[Chih-Hsuan Yen]

Chih-Hsuan Yen  added the comment:

As a side note, EPOLL_CLOEXEC is also missing on Android if *both* of the 
following conditions hold:

1. The build target is Android API < 21 (issue 32654)
2. Android NDK r15 or newer is used

The second condition is related to a workaround in NDK [1]. For now it's 
proposed to use NDK r14 to build CPython [2], so this issue can be left to the 
future. I've also asked if the relevant workaround in NDK can be reverted [3].

[1] https://android-review.googlesource.com/c/platform/bionic/+/401372
[2] https://github.com/python/cpython/pull/1629
[3] https://github.com/android-ndk/ndk/issues/302#issuecomment-361488327

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[issue32102] Add "capture_output=True" option to subprocess.run

[Gregory P. Smith]

Change by Gregory P. Smith :


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[issue32721] test_hashlib fails if _md5 is not built

[miss-islington]

Change by miss-islington :


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[issue32721] test_hashlib fails if _md5 is not built

[Benjamin Peterson]

Benjamin Peterson  added the comment:


New changeset 95441809ef77a8df5e14601ade6c054ef7114c02 by Benjamin Peterson in 
branch 'master':
closes bpo-32721: do not fail test_hashlib if _md5 isn't available (GH-5441)
https://github.com/python/cpython/commit/95441809ef77a8df5e14601ade6c054ef7114c02


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[issue32723] codecs.open silently ignores argument errors

[Xiang Zhang]

Change by Xiang Zhang :


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type:  -> behavior

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[issue32723] codecs.open

[Xiang Zhang]

New submission from Xiang Zhang :

>>> import codecs
>>> f = codecs.open('/tmp/a', 'w', errors='replace')
>>> f.errors
'strict'

Passing errors to codecs.open without encoding doesn't work. Can't get this 
from doc and I don't think it should silently ignore the passing argument.

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nosy: lemburg, vstinner, xiang.zhang
priority: normal
severity: normal
status: open
title: codecs.open
versions: Python 2.7, Python 3.6, Python 3.7

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[issue32681] Fix uninitialized variable in os_dup2_impl

[Gregory P. Smith]

Change by Gregory P. Smith :


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[issue32441] os.dup2 should return the new fd

[Gregory P. Smith]

Gregory P. Smith  added the comment:

https://github.com/python/cpython/pull/5346 (merged) should fix that warning.

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[issue32681] Fix uninitialized variable in os_dup2_impl

[Gregory P. Smith]

Gregory P. Smith  added the comment:


New changeset 3d86e484de6334fe16cbab512744597bd0de4e80 by Gregory P. Smith 
(Stéphane Wirtel) in branch 'master':
bpo-32681: Fix an uninitialized variable in the C implementation of os.dup2 
(GH-5346)
https://github.com/python/cpython/commit/3d86e484de6334fe16cbab512744597bd0de4e80


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[issue21417] Compression level for zipfile

[Gregory P. Smith]

Gregory P. Smith  added the comment:


New changeset ce237c7d58ba207575cdfb0195a58a6407fbf717 by Gregory P. Smith (Bo 
Bayles) in branch 'master':
bpo-21417: Add compresslevel= to the zipfile module (GH-5385)
https://github.com/python/cpython/commit/ce237c7d58ba207575cdfb0195a58a6407fbf717


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[issue32722] Classes

[Soothsayer]

Soothsayer  added the comment:

Correction: it's a dictionary comprehension, and it did indeed used to be a 
call to dict() in the 2.7 documentation.

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[issue32722] Classes

[Soothsayer]

Change by Soothsayer :


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[issue32722] Classes

[Soothsayer]

New submission from Soothsayer :

In the Python tutorial, in "9. Classes", in "9.10 Generator expression", a list 
of sample generator expressions used as arguments to functions is given. 
However, one of the examples isn't a generator expression, it's a set 
comprehension.

sine_table = {x: sin(x*pi/180) for x in range(0, 91)}

Perhaps this used to be a call to set() and was mistakenly converted?

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messages: 311235
nosy: Soothsayer, docs@python
priority: normal
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status: open
title: Classes
type: enhancement
versions: Python 3.7, Python 3.8

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Re: Where has the practice of sending screen shots as source code come from?

[Rustom Mody]

On Sunday, January 28, 2018 at 8:37:11 PM UTC+5:30, Steven D'Aprano wrote:
> I'm seeing this annoying practice more and more often. Even for trivial 
> pieces of text, a few lines, people post screenshots instead of copying 
> the code.
> 
> Where has this meme come from? It seems to be one which inconveniences 
> *everyone* involved:

Have you heard of the “Dutch Reach¨?
http://www.telegraph.co.uk/travel/news/the-dutch-reach-how-opening-car-door-like-the-dutch-could-save-lives-cycling/

Presumably it goes beyond the 'inconvenience' of images-instead-of-text to the
saving-of-lives…
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[issue32721] test_hashlib fails if _md5 is not built

[Benjamin Peterson]

Change by Benjamin Peterson :


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stage:  -> patch review

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[issue25942] Do not immediately SIGKILL subprocess child processes upon ^C

[Gregory P. Smith]

Gregory P. Smith  added the comment:

I went with my change to give the child process a small amount of time to 
cleanup by default.  Not perfect, but this should be more similar to the Python 
<=3.2 behavior.  Lets see if any issues crop up during the 3.7 betas.

--
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title: Add a new optional cleanup_timeout parameter to subprocess.call() -> Do 
not immediately SIGKILL subprocess child processes upon ^C

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[issue32690] Return function locals() in order of creation?

[Nick Coghlan]

Nick Coghlan  added the comment:

OK, this is back the way it was on the 3.6 branch now, while keeping the change 
on the 3.7 branch.

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[issue32721] test_hashlib fails if _md5 is not built

[Benjamin Peterson]

New submission from Benjamin Peterson :

$ make
$ rm build/lib.linux-x86_64-3.7/_md5.cpython-37m-x86_64-linux-gnu.so 
$ ./python -m test test_hashlib
Run tests sequentially
0:00:00 load avg: 1.11 [1/1] test_hashlib
ERROR:root:code for hash md5 was not found.
Traceback (most recent call last):
  File "/home/benjamin/dev/python/cpython/Lib/hashlib.py", line 243, in 
globals()[__func_name] = __get_hash(__func_name)
  File "/home/benjamin/dev/python/cpython/Lib/hashlib.py", line 113, in 
__get_builtin_constructor
raise ValueError('unsupported hash type ' + name)
ValueError: unsupported hash type md5
/home/benjamin/dev/python/cpython/Lib/test/test_hashlib.py:90: UserWarning: Did 
a C extension fail to compile? No module named '_md5'
  warnings.warn('Did a C extension fail to compile? %s' % error)
Warning -- logging._handlerList was modified by test_hashlib
  Before: (139817255081928, [, ], [])
  After:  (139817255081928, [, ], [, ]) 
test test_hashlib failed -- Traceback (most recent call last):
  File "/home/benjamin/dev/python/cpython/Lib/test/test_hashlib.py", line 209, 
in test_get_builtin_constructor
constructor = get_builtin_constructor('md5')
  File "/home/benjamin/dev/python/cpython/Lib/hashlib.py", line 113, in 
__get_builtin_constructor
raise ValueError('unsupported hash type ' + name)
ValueError: unsupported hash type md5

test_hashlib failed

1 test failed:
test_hashlib

Total duration: 397 ms
Tests result: FAILURE

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title: test_hashlib fails if _md5 is not built
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[issue25942] Add a new optional cleanup_timeout parameter to subprocess.call()

[Gregory P. Smith]

Gregory P. Smith  added the comment:


New changeset f4d644f36ffb6cb11b34bfcf533c14cfaebf709a by Gregory P. Smith in 
branch 'master':
bpo-25942: make subprocess more graceful on ^C (GH-5026)
https://github.com/python/cpython/commit/f4d644f36ffb6cb11b34bfcf533c14cfaebf709a


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[issue32690] Return function locals() in order of creation?

[Nick Coghlan]

Nick Coghlan  added the comment:


New changeset 05f91a42cd9575ef338a67bd04855b44f6ac20c2 by Nick Coghlan in 
branch '3.6':
[3.6] Revert "bpo-32690: Preserve order of locals() (GH-5379) (#5390)"
https://github.com/python/cpython/commit/05f91a42cd9575ef338a67bd04855b44f6ac20c2


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[issue32720] Format mini-language integer definition is incorrect

[Nick Coghlan]

New submission from Nick Coghlan :

I just noticed that https://docs.python.org/3/library/string.html#formatspec 
links to the "integer" definition in the main Python grammar for the permitted 
format of numeric fields.

This isn't accurate:

```
>>> format(10e4, ",.2f")
'100,000.00'
>>> format(10e4, ",.0x2f")
Traceback (most recent call last):
  File "", line 1, in 
ValueError: Invalid format specifier
>>> format(10e4, ",.2_2f")
Traceback (most recent call last):
  File "", line 1, in 
ValueError: Invalid format specifier
```

Instead, the `width` and `precision` subfields should be defined as "digit+"

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priority: normal
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stage: needs patch
status: open
title: Format mini-language integer definition is incorrect
type: behavior
versions: Python 3.6, Python 3.7, Python 3.8

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[issue32701] Typo in quopri documentation

[Mariatta Wijaya]

Mariatta Wijaya  added the comment:

Thanks!

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status: open -> closed

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[issue32690] Return function locals() in order of creation?

[Nick Coghlan]

Nick Coghlan  added the comment:

Noting the git-fu required for non-master reverts:

- check out the branch of interest and ensure it's up to date
- `git checkout -b bpo-32690-revert-3.6-backport`
- `git revert 9105879bfd7133ecbac67f3e9c0bacf6e477de5a`
- edit commit message as appropriate
- create a PR targeting the branch of interest: 
https://github.com/python/cpython/pull/5439

Devguide issue here: https://github.com/python/devguide/issues/319

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[issue32701] Typo in quopri documentation

[Mariatta Wijaya]

Mariatta Wijaya  added the comment:


New changeset 04f99ba9d7186278eaf072e9a62c03aa63a8a6bb by Mariatta (Miss 
Islington (bot)) in branch '3.6':
bpo-32701: Clarify the quotetabs flag in quopri documentation (GH-5401) 
(GH-5438)
https://github.com/python/cpython/commit/04f99ba9d7186278eaf072e9a62c03aa63a8a6bb


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[issue32690] Return function locals() in order of creation?

[Nick Coghlan]

Change by Nick Coghlan :


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[issue32690] Return function locals() in order of creation?

[Ned Deily]

Ned Deily  added the comment:

I'll make sure it's taken care of prior to 3.6.5rc1.

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[issue32604] Expose the subinterpreters C-API in Python for testing use.

[Eric Snow]

Eric Snow  added the comment:

The buildbots should be happier now.  I'll keep an eye on them.

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[issue32690] Return function locals() in order of creation?

[Raymond Hettinger]

Raymond Hettinger  added the comment:

Ned, can you do the reversion?  I'm a little git/github challenged on how to 
revert this one.

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[issue32604] Expose the subinterpreters C-API in Python for testing use.

[Eric Snow]

Eric Snow  added the comment:


New changeset 83e64c8a544028ae677af2a0bc268dbe1c11cc3a by Eric Snow in branch 
'master':
bpo-32604: NULL-terminate kwlist in channel_drop_interpreter(). (gh-5437)
https://github.com/python/cpython/commit/83e64c8a544028ae677af2a0bc268dbe1c11cc3a


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[issue32690] Return function locals() in order of creation?

[Raymond Hettinger]

Change by Raymond Hettinger :


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[issue32701] Typo in quopri documentation

[miss-islington]

Change by miss-islington :


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[issue32701] Typo in quopri documentation

[Mariatta Wijaya]

Mariatta Wijaya  added the comment:


New changeset 9424dcbb3e20a26dfdd81659303b989f7d3da044 by Mariatta (Julien 
Palard) in branch 'master':
bpo-32701: Clarify the quotetabs flag in quopri documentation (GH-5401)
https://github.com/python/cpython/commit/9424dcbb3e20a26dfdd81659303b989f7d3da044


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[issue32604] Expose the subinterpreters C-API in Python for testing use.

[Eric Snow]

Eric Snow  added the comment:

I just put up a PR that should fix the 4 buildbots.

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[issue32604] Expose the subinterpreters C-API in Python for testing use.

[Eric Snow]

Change by Eric Snow :


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[issue32604] Expose the subinterpreters C-API in Python for testing use.

[Eric Snow]

Eric Snow  added the comment:

On the PPC64 AIX 3.x buildbot:

==
FAIL: test_repr (test.test__xxsubinterpreters.ChannelIDTests)
--
Traceback (most recent call last):
  File 
"/home/shager/cpython-buildarea/3.x.edelsohn-aix-ppc64/build/Lib/test/test__xxsubinterpreters.py",
 line 784, in test_repr
self.assertEqual(repr(cid), 'ChannelID(10)')
AssertionError: 'ChannelID(0)' != 'ChannelID(10)'
- ChannelID(0)
+ ChannelID(10)
?   +

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[issue32604] Expose the subinterpreters C-API in Python for testing use.

[Eric Snow]

Eric Snow  added the comment:

On 4 of the buildbots:


==
ERROR: test_drop_multiple_times (test.test__xxsubinterpreters.ChannelTests)
--
Traceback (most recent call last):
  File 
"/srv/buildbot/buildarea/3.x.bolen-ubuntu/build/Lib/test/test__xxsubinterpreters.py",
 line 890, in test_drop_multiple_times
interpreters.channel_drop_interpreter(cid, send=True, recv=True)
SystemError: More keyword list entries (7) than format specifiers (3)
==
ERROR: test_drop_single_user (test.test__xxsubinterpreters.ChannelTests)
--
Traceback (most recent call last):
  File 
"/srv/buildbot/buildarea/3.x.bolen-ubuntu/build/Lib/test/test__xxsubinterpreters.py",
 line 848, in test_drop_single_user
interpreters.channel_drop_interpreter(cid, send=True, recv=True)
SystemError: More keyword list entries (7) than format specifiers (3)
==
ERROR: test_drop_used_multiple_times_by_single_user 
(test.test__xxsubinterpreters.ChannelTests)
--
Traceback (most recent call last):
  File 
"/srv/buildbot/buildarea/3.x.bolen-ubuntu/build/Lib/test/test__xxsubinterpreters.py",
 line 957, in test_drop_used_multiple_times_by_single_user
interpreters.channel_drop_interpreter(cid, send=True, recv=True)
SystemError: More keyword list entries (7) than format specifiers (3)
==
ERROR: test_drop_with_unused_items (test.test__xxsubinterpreters.ChannelTests)
--
Traceback (most recent call last):
  File 
"/srv/buildbot/buildarea/3.x.bolen-ubuntu/build/Lib/test/test__xxsubinterpreters.py",
 line 899, in test_drop_with_unused_items
interpreters.channel_drop_interpreter(cid, send=True, recv=True)
SystemError: More keyword list entries (7) than format specifiers (3)

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[issue32604] Expose the subinterpreters C-API in Python for testing use.

[Eric Snow]

Eric Snow  added the comment:

Yeah, I'm looking into it.  Also, I noticed some refleaks that I'll be sorting 
out.

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[issue32719] fatal error raised when Ctrl-C print loop

[Xiang Zhang]

Xiang Zhang  added the comment:

It's 3.6 and 3.7. The dir name in traceback doesn't matter.

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Re: Variable scope in nested functions

[Prahallad Achar]

Thanks Chris,
Without using nonlocal any other options available?

On 30 Jan 2018 8:30 am, "Chris Angelico"  wrote:

> On Tue, Jan 30, 2018 at 1:48 PM, Prahallad Achar 
> wrote:
> > def a() :
> > Print (value)
> > def b() :
> >  Value = 100
> > Return b
> >
> > Its a nested function.  How can I use variable value just one function
> > above the parent function.
> > This is possible in tcl.. Is it possible in Python too?
>
> It is. What you have is a "nonlocal" variable. You will need to assign
> to the variable in the outer function though.
>
> def a():
> value = None
> def b():
> nonlocal value
> value = 100
> return b
>
> You can do this through any number of levels of nested functions.
>
> ChrisA
> --
> https://mail.python.org/mailman/listinfo/python-list
>
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Re: Where has the practice of sending screen shots as source code come from?

[Chris Angelico]

On Tue, Jan 30, 2018 at 12:56 PM, Abdur-Rahmaan Janhangeer
 wrote:
>
> XD since we were elaborating on the reasons why users use screenshot, well i 
> was elaborating why users use screenshot, not me. those are some reasons i 
> came across being admin in some whatsapp groups and python lists (where the 
> user complains of his attachments not showing).
>

Sorry, I was using the generic "you", rather than pointing the finger
specifically at you. That was a bit unclear in my post - mea culpa.

ChrisA
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Re: Variable scope in nested functions

[Chris Angelico]

On Tue, Jan 30, 2018 at 1:48 PM, Prahallad Achar  wrote:
> def a() :
> Print (value)
> def b() :
>  Value = 100
> Return b
>
> Its a nested function.  How can I use variable value just one function
> above the parent function.
> This is possible in tcl.. Is it possible in Python too?

It is. What you have is a "nonlocal" variable. You will need to assign
to the variable in the outer function though.

def a():
value = None
def b():
nonlocal value
value = 100
return b

You can do this through any number of levels of nested functions.

ChrisA
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[issue32719] fatal error raised when Ctrl-C print loop

[Xiang Zhang]

New submission from Xiang Zhang :

A simple snippet:

import threading

def func():
while True:
print(1,2,3,4,5,6,7,8,9,10) 

t1 = threading.Thread(target=func)
t2 = threading.Thread(target=func)
t1.start()
t2.start()

Running this snippet and Ctrl-C raises FatalError:

^CException ignored in: 
Traceback (most recent call last):
1 2 3 4 5 6 7 8 9 10
  File "/root/Python-2.8.1/Lib/threading.py", line 1294, in _shutdown
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9 10
t.join()
  File "/root/Python-2.8.1/Lib/threading.py", line 1056, in join
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9 10
self._wait_for_tstate_lock()
  File "/root/Python-2.8.1/Lib/threading.py", line 1072, in 
_wait_for_tstate_lock
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9 10
elif lock.acquire(block, timeout):
KeyboardInterrupt
Fatal Python error: could not acquire lock for <_io.BufferedWriter 
name=''> at interpreter shutdown, possibly due to daemon threads

Thread 0x7f7f6b22e700 (most recent call first):
  File "/tmp/test.py", line 5 in func
  File "/root/Python-2.8.1/Lib/threading.py", line 864 in run
  File "/root/Python-2.8.1/Lib/threading.py", line 916 in _bootstrap_inner
  File "/root/Python-2.8.1/Lib/threading.py", line 884 in _bootstrap

Thread 0x7f7f6ba2f700 (most recent call first):
  File "/tmp/test.py", line 5 in func
  File "/root/Python-2.8.1/Lib/threading.py", line 864 in run
  File "/root/Python-2.8.1/Lib/threading.py", line 916 in _bootstrap_inner
  File "/root/Python-2.8.1/Lib/threading.py", line 884 in _bootstrap

Current thread 0x7f7f73761740 (most recent call first):
已放弃(吐核) /* segfault(core dump) */

--
components: IO
messages: 311215
nosy: xiang.zhang
priority: normal
severity: normal
status: open
title: fatal error raised when Ctrl-C print loop
type: behavior
versions: Python 3.6, Python 3.7

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Variable scope in nested functions

[Prahallad Achar]

def a() :
Print (value)
def b() :
 Value = 100
Return b

Its a nested function.  How can I use variable value just one function
above the parent function.
This is possible in tcl.. Is it possible in Python too?
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[issue32714] remove resourceLoader related code since it's deprecated

[Jay Yin]

Change by Jay Yin :


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stage:  -> resolved
status: open -> closed

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[issue32690] Return function locals() in order of creation?

[Raymond Hettinger]

Raymond Hettinger  added the comment:

> Can someone please revert the 3.6 change, as asked by Guido?

You have commit rights, so if you're impatient, go ahead.  Otherwise, I still 
need to figure-out out the github-foo needed to revert on something other than 
the master branch.  This isn't even my issue. I was trying to help out and 
didn't expect the Spanish Inquisition.

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[issue32694] Can no longer specify OpenSLL locations with CPPFLAGS / LDFLAGS ?

[Barry A. Warsaw]

Barry A. Warsaw  added the comment:

Can we also cover Brew?

Here's the dumb little configure wrapper I use:

```
#!/bin/sh

export CPPFLAGS="-I$(brew --prefix sqlite3)/include -I$(brew --prefix 
zlib)/include"
export LDFLAGS="-L$(brew --prefix sqlite3)/lib -L$(brew --prefix zlib)/lib"
export PKG_CONFIG_PATH="/usr/local/opt/openssl/lib/pkgconfig"

./configure
```

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Re: Where has the practice of sending screen shots as source code come from?

[Abdur-Rahmaan Janhangeer]

XD since we were elaborating on the reasons why users use screenshot, well
i was elaborating why users use screenshot, not me. those are some reasons
i came across being admin in some whatsapp groups and python lists (where
the user complains of his attachments not showing).


Garanti
sans virus. www.avast.com

<#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>

On Tue, Jan 30, 2018 at 5:13 AM, Chris Angelico  wrote:

> On Tue, Jan 30, 2018 at 11:40 AM, Abdur-Rahmaan Janhangeer
>  wrote:
> > well maybe screenshot of shell sessions to show varying formatted test
> > cases might be valid (like the increasingly popular practise of coding py
> > on android)
>
> Maybe, but that isn't code.
>
> > also, sreenshot sources tend to be syntax colored which might be easier
> to
> > read.
>
> No. The syntax highlighting comes from the code, so I should be able
> to paste your code into my editor and see it in colour. No benefit to
> seeing it in YOUR colours, which may not be helpful to me.
>
> > ease of access is the culprit !
>
> I find that hard to believe... you're saying it's actually easier to
> screenshot a text editor than to copy and paste?
>
> ChrisA
> --
> https://mail.python.org/mailman/listinfo/python-list
>
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[issue32604] Expose the subinterpreters C-API in Python for testing use.

[Ned Deily]

Ned Deily  added the comment:

Eric, looks like some buildbots are unhappy, for instance:

http://buildbot.python.org/all/#builders/13/builds/648

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[issue32604] Expose the subinterpreters C-API in Python for testing use.

[Eric Snow]

Eric Snow  added the comment:

I've merged the patch without Windows support, which shouldn't be a problem 
given the purpose of the extension module.  I've also added a PR for get the 
module building under Windows.  I'd like to get that resolved ASAP.

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[issue32604] Expose the subinterpreters C-API in Python for testing use.

[Eric Snow]

Change by Eric Snow :


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[issue32604] Expose the subinterpreters C-API in Python for testing use.

[Eric Snow]

Eric Snow  added the comment:


New changeset 7f8bfc9b9a8381ddb768421b5dd5cbd970266190 by Eric Snow in branch 
'master':
bpo-32604: Expose the subinterpreters C-API in a "private" stdlib module. 
(gh-1748)
https://github.com/python/cpython/commit/7f8bfc9b9a8381ddb768421b5dd5cbd970266190


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[issue32550] STORE_ANNOTATION bytecode is unnecessary and can be removed.

[Guido van Rossum]

Guido van Rossum  added the comment:

W00t!

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Re: Where has the practice of sending screen shots as source code come from?

[Chris Angelico]

On Tue, Jan 30, 2018 at 11:40 AM, Abdur-Rahmaan Janhangeer
 wrote:
> well maybe screenshot of shell sessions to show varying formatted test
> cases might be valid (like the increasingly popular practise of coding py
> on android)

Maybe, but that isn't code.

> also, sreenshot sources tend to be syntax colored which might be easier to
> read.

No. The syntax highlighting comes from the code, so I should be able
to paste your code into my editor and see it in colour. No benefit to
seeing it in YOUR colours, which may not be helpful to me.

> ease of access is the culprit !

I find that hard to believe... you're saying it's actually easier to
screenshot a text editor than to copy and paste?

ChrisA
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[issue32690] Return function locals() in order of creation?

[STINNER Victor]

STINNER Victor  added the comment:

Can someone please revert the 3.6 change, as asked by Guido?

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status: closed -> open

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[issue27931] Email parse IndexError <""@wiarcom.com>

[Xiang Zhang]

Change by Xiang Zhang :


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stage: patch review -> resolved
status: open -> closed

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[issue32714] remove resourceLoader related code since it's deprecated

[Jay Yin]

Jay Yin  added the comment:

Alright I see, so I guess I'll set this as "postponed" and close it?

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[issue32718] Install PowerShell activation scripts for venv for all platforms

[Brett Cannon]

New submission from Brett Cannon :

Thanks to https://github.com/PowerShell/PowerShell, PowerShell Core is 
cross-platform. That suggests that the Activate.ps1 file for venv should be 
moved to the common/ directory instead of existing only in the nt/ directory.

--
components: Library (Lib)
messages: 311206
nosy: brett.cannon, vinay.sajip
priority: low
severity: normal
status: open
title: Install PowerShell activation scripts for venv for all platforms
type: enhancement
versions: Python 3.8

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[issue32550] STORE_ANNOTATION bytecode is unnecessary and can be removed.

[Raymond Hettinger]

Change by Raymond Hettinger :


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stage: patch review -> resolved
status: open -> closed

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Re: Where has the practice of sending screen shots as source code come from?

[Abdur-Rahmaan Janhangeer]

well maybe screenshot of shell sessions to show varying formatted test
cases might be valid (like the increasingly popular practise of coding py
on android)

also, sreenshot sources tend to be syntax colored which might be easier to
read.

overall it is a bad idea as you won't have the full code if the code is
long unless you are on android with the scroll screenshot option.

ease of access is the culprit !

Abdur-Rahmaan Janhangeer
https://abdurrahmaanjanhangeer.wordpress.com

On 28 Jan 2018 19:08, "Steven D'Aprano" <
steve+comp.lang.pyt...@pearwood.info> wrote:

> I'm seeing this annoying practice more and more often. Even for trivial
> pieces of text, a few lines, people post screenshots instead of copying
> the code.
>
> Where has this meme come from? It seems to be one which inconveniences
> *everyone* involved:
>
> - for the sender, instead of a simple copy and paste, they have to take a
> screen shot, possibly trim the image to remove any bits of the screen
> they don't want to show, attach it to their email or upload it to an
> image hosting site;
>
> - for the receiver, you are reliant on a forum which doesn't strip
> attachments, or displays externally hosted images; the visually impaired
> are excluded from using a screen reader; and nobody can copy or edit the
> given text.
>
> It is as if people are deliberately inconveniencing themselves in order
> to inconvenience the people they are asking to help them.
>
> With the exception of one *exceedingly* overrated advantage, namely the
> ability to annotate the image with coloured lines and circles and
> squiggles or other graphics (which most people don't bother to do), this
> seems to me to be 100% counter-productive for everyone involved. Why has
> it spread and why do people keep doing it?
>
> I don't want to be the old man yelling "Get Of My Lawn!" to the cool
> kids, but is this just another sign of the downward spiral of programming
> talent? Convince me that there is *some* justification for this practice.
> Even a tiny one.
>
> (The day a programmer posts a WAV file of themselves reading their code
> out aloud, is the day I turn my modem off and leave the internet forever.)
>
>
>
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[issue32550] STORE_ANNOTATION bytecode is unnecessary and can be removed.

[Raymond Hettinger]

Raymond Hettinger  added the comment:


New changeset 332cd5ee4ff42c9904c56e68a1028f383f7fc9a8 by Raymond Hettinger 
(Mark Shannon) in branch 'master':
bpo-32550. Remove the STORE_ANNOTATION bytecode. (GH-5181)
https://github.com/python/cpython/commit/332cd5ee4ff42c9904c56e68a1028f383f7fc9a8


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Re: Where has the practice of sending screen shots as source code come from?

[Ethan Furman]

On 01/29/2018 02:41 PM, Steven D'Aprano wrote:

On Mon, 29 Jan 2018 11:43:36 -0800, John Ladasky wrote:

On Sunday, January 28, 2018 at 7:07:11 AM UTC-8, Steven D'Aprano wrote:



(The day a programmer posts a WAV file of themselves reading their code
out aloud, is the day I turn my modem off and leave the internet
forever.)


What's a... modem?


Its the component of the router that actually handles the
telecommunications side of things. Legend has it that once upon a time
they were a stand alone device.


Mine was never stand-alone.  I always had to prop it up with some books.

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[issue32218] add __iter__ to enum.Flag members

[Ethan Furman]

Ethan Furman  added the comment:

This functionality is now in the third-party aenum* library.

Are there any strong use-cases for this behavior such that it should be in the 
stdlib?


* as of version 2.0.10, available on PyPI, and I am its author

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[issue22374] Replace contextmanager example and improve explanation

[cowlinator]

cowlinator  added the comment:

I would like to second the improved explanation of contextlib.contextmanager, 
and additionally point out another problem:  
A very important piece of information is missing from the documentation:  how 
to return data from the contextmanager-wrapped function.  

I had to go look up the source code, which had a wonderful explanation in the 
comments: https://gist.github.com/enuomi/1385336#file-contextlib-py-L56 

In particular, note that 

@contextmanager
def some_generator():
  yield 

can be used to return  to the caller, via

with some_generator() as :
  print(return_data)

This information is wholly and completely missing from the 
contextlib.contextmanager documentation.

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[issue31851] test_subprocess hangs randomly on Windows with Python 3.x

[Steve Dower]

Steve Dower  added the comment:

It's an assert, so it only affects debug builds - releases are not impacted.

I'm guessing there's a test that spawns a subprocess and doesn't initialize it 
properly for tests (specifically the part where we disable assertions on 
Windows).

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[issue32550] STORE_ANNOTATION bytecode is unnecessary and can be removed.

[Mark Shannon]

Mark Shannon  added the comment:

Rebased, pushed and CI is green.

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[issue32717] Document PEP 560

[Ivan Levkivskyi]

New submission from Ivan Levkivskyi :

This should include:
* Short documentation PR for `__mro_entry__` and `__base_subclass__` methods.
* The `__class_getitem__` C API calling convention (with motivation, many 
classes are implemented in C but are generic in nature, like numpy.ndarray) in 
PEP 560.

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components: Documentation
messages: 311200
nosy: gvanrossum, levkivskyi, serhiy.storchaka
priority: normal
severity: normal
stage: needs patch
status: open
title: Document PEP 560
type: enhancement
versions: Python 3.7

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[issue32226] Implement PEP 560: Core support for typing module and generic types

[Ivan Levkivskyi]

Ivan Levkivskyi  added the comment:

OK, I will close this issue, and open separate issues for documentation, Union, 
etc.

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[issue32715] Make create_unix_server for SOCK_DGRAM work

[Yury Selivanov]

Yury Selivanov  added the comment:

Hm, maybe I'm mistaken here, but I have no time right now to confirm.

I'll reopen the issue so that we can consider this (and especially SEQPACKET) 
for 3.8.  Sorry for insta-reject :)

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Re: String matching based on sound?

[Steven D'Aprano]

On Mon, 29 Jan 2018 13:28:32 -0900, Israel Brewster wrote:

> In initial searching, I did find the "fuzzy" library, which at first
> glance appeared to be what I was looking for, but it, apparently,
> ignores numbers, with the result that "all 4 one" gave the same output
> as "all in", but NOT the same output as "all 4 1" - even though "all 4
> 1" sounds EXACTLY the same, while "all in" is only similar if you ignore
> the 4.

Before passing the string to the fuzzy matcher, do a simple text 
replacement of numbers to their spelled out version: "4" -> "four".

You may want to do other text replacements too, based on sound or visual 
design, for example to deal with Kei$ha a.k.a. Keisha, etc.


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[issue32394] socket lib beahavior change in 3.6.4

[Steve Dower]

Steve Dower  added the comment:

I like Kamil's suggestion.

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[issue32715] Make create_unix_server for SOCK_DGRAM work

[holger]

holger  added the comment:

Could you please tell me which exact posix document and paragraph says that?

In Linux sending can fail but once sendmsg worked the message is enqueued on 
the other socket 
(https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/net/unix/af_unix.c?id=110af3acb8cfd79dcb5676a01e07cb2b6afa4c04#n1626).

In FreeBSD 
(http://fxr.watson.org/fxr/source/kern/uipc_usrreq.c?v=FREEBSD10#L911) it looks 
similar. If the mbuf can't be put into the recvq of the remote socket.. an 
error will be returned.

What about SEQPACKET support?

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Re: Where has the practice of sending screen shots as source code come from?

[Steven D'Aprano]

On Mon, 29 Jan 2018 17:34:34 +, John Gordon wrote:

[...]
> The displayed filename in File Explorer was input.txt -- meaning that
> the real filename was actually input.txt.txt, because File Explorer
> shows file extensions as a separate column.
> 
> Without this screenshot, we would have had only the user's (incorrect)
> assertion that the file existed, and no way to diagnose the true issue.

No way to diagnose it -- apart from asking the programmer to run the DOS 
command `dir` in the directory and copy and paste the file listing.

Or os.listdir() in Python.


> Granted, this was an environment issue and not a code issue, but I can
> imagine situations where the same sort of thing could apply to code.

The only time a programmer MUST include a screen shot is when they are 
trying to diagnose a problem with graphical output that can't easily and 
accurately be described in words. And that's a screen shot of the 
*output*, not the code.

It MAY be useful to include a screen shot of system crashes where the 
error message is impossible to copy and too long and complex to 
transcribe.

Or possibly when trying to ask for help with your GUI IDE or editor, 
although even then most questions can be described in words.

So I don't quite rule out the possibility of programmers needing to take 
screen shots at all. I'm not a troglodyte :-)

But what I do rule out is the necessity and usefulness of programmers 
taking screen shots of their *code* to ask for help with program logic or 
solving errors (with the very rare possible exception of especially 
difficult to solve syntax errors).


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[issue32716] setup.py register --repository is broken

[Takayuki SHIMIZUKAWA]

New submission from Takayuki SHIMIZUKAWA :

Although document 
https://docs.python.org/3.6/distutils/packageindex.html#package-cmdoptions says 
"The --repository or -r option lets you specify a PyPI server different from 
the default", if there is no URL specified in ``.pypirc`` it will display 
"ValueError:  not found in .pypirc".


::

  $ python3 setup.py register -r https://test.pypi.org/legacy/
  running register
  running egg_info
  writing dependency_links to test.egg-info/dependency_links.txt
  writing top-level names to test.egg-info/top_level.txt
  writing test.egg-info/PKG-INFO
  reading manifest file 'test.egg-info/SOURCES.txt'
  writing manifest file 'test.egg-info/SOURCES.txt'
  Traceback (most recent call last):
File "setup.py", line 4, in 
  setup(name='test')
File "/usr/lib/python3.5/distutils/core.py", line 148, in setup
  dist.run_commands()
File "/usr/lib/python3.5/distutils/dist.py", line 955, in run_commands
  self.run_command(cmd)
File "/usr/lib/python3.5/distutils/dist.py", line 974, in run_command
  cmd_obj.run()
File "/usr/lib/python3/dist-packages/setuptools/command/register.py", line 
10, in run
  orig.register.run(self)
File "/usr/lib/python3.5/distutils/command/register.py", line 45, in run
  self._set_config()
File "/usr/lib/python3.5/distutils/command/register.py", line 80, in 
_set_config
  raise ValueError('%s not found in .pypirc' % self.repository)
  ValueError: https://test.pypi.org/legacy/ not found in .pypirc

  $ python3 -V
  Python 3.5.2

  $ lsb_release -a
  No LSB modules are available.
  Distributor ID: Ubuntu
  Description:Ubuntu 16.04.3 LTS
  Release:16.04
  Codename:   xenial

This behavior could be confirmed on Windows.

I think there are two correction methods.
One is to fix it so that we can specify any URL regardless of the setting of 
.pypirc.
The other is to write in the document that "-r option can specify server name 
or URL in .pypirc".

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String matching based on sound?

[Israel Brewster]

I am working on a python program that, at one step, takes an input (string), 
and matches it to songs/artists in a users library. I'm having some difficulty, 
however, figuring out how to match when the input/library contains 
numbers/special characters. For example, take the group "All-4-One". In my 
library it might be listed exactly like that. I need to match this to ANY of 
the following inputs:

• all-4-one (of course)
• all 4 one (no dashes)
• all 4 1 (all numbers)
• all four one (all spelled out)
• all for one

Or, really, any other combination that sounds the same. The reasoning for this 
is that the input comes from a speech recognition system, so the user speaking, 
for example, "4", could be recognized as "for", "four" or "4". I'd imagine that 
Alexa/Siri/Google all do things like this (since you can ask them to play 
songs/artists), but I want to implement this in Python.

In initial searching, I did find the "fuzzy" library, which at first glance 
appeared to be what I was looking for, but it, apparently, ignores numbers, 
with the result that "all 4 one" gave the same output as "all in", but NOT the 
same output as "all 4 1" - even though "all 4 1" sounds EXACTLY the same, while 
"all in" is only similar if you ignore the 4.

So is there something similar that works with strings containing numbers? And 
that would only give me a match if the two strings sound identical? That is, 
even ignoring the numbers, I should NOT get a match between "all one" and "all 
in" - they are similar, but not identical, while "all one" and "all 1" would be 
identical.





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Re: Where has the practice of sending screen shots as source code come from?

[Steven D'Aprano]

On Mon, 29 Jan 2018 11:43:36 -0800, John Ladasky wrote:

> On Sunday, January 28, 2018 at 7:07:11 AM UTC-8, Steven D'Aprano wrote:
>>
>> (The day a programmer posts a WAV file of themselves reading their code
>> out aloud, is the day I turn my modem off and leave the internet
>> forever.)
> 
> What's a... modem?


Its the component of the router that actually handles the 
telecommunications side of things. Legend has it that once upon a time 
they were a stand alone device.


-- 
Steve

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[issue32714] remove resourceLoader related code since it's deprecated

[Barry A. Warsaw]

Barry A. Warsaw  added the comment:

We can't remove the code because it might still be used by third parties.  
Deprecation generally means we inform users that they shouldn't use the code 
any more (possibly with a DeprecationWarning, although we decided not to do 
that in this case).  We definitely won't remove the code in 3.7.  We can think 
about it for 3.8

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[issue30697] segfault in PyErr_NormalizeException() after memory exhaustion

[Brett Cannon]

Brett Cannon  added the comment:

No opinion from me on how critical this is.

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[issue32715] Make create_unix_server for SOCK_DGRAM work

[Yury Selivanov]

Yury Selivanov  added the comment:

SOCK_DGRAM is never reliable, even for AF_UNIX.  It might appear reliable to 
your test code, but there's no guarantee for that under any OS in Posix 
standard AFAIK.

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[issue32550] STORE_ANNOTATION bytecode is unnecessary and can be removed.

[Guido van Rossum]

Guido van Rossum  added the comment:

Awesome!

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[issue32550] STORE_ANNOTATION bytecode is unnecessary and can be removed.

[Ned Deily]

Ned Deily  added the comment:

Mark, at the moment, you have at least another 14 hours until the announced 
code freeze deadline :)

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[issue32550] STORE_ANNOTATION bytecode is unnecessary and can be removed.

[Mark Shannon]

Mark Shannon  added the comment:

If it can wait another hour, I will be at home and can do the rebase then.

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