[issue30698] asyncio sslproto do not shutdown ssl layer cleanly

[Kumar Aditya]

Kumar Aditya  added the comment:

Since https://bugs.python.org/issue44011 is fixed now, this can be closed.
@asvetlov

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versions: +Python 3.11 -Python 3.5, Python 3.6, Python 3.7

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[issue25743] [doc] Clarify exactly what \w matches in UNICODE mode

[Stanley]

Stanley  added the comment:

Would a change like this be accurate?

Matches Unicode word characters; this includes most alphanumeric characters as 
well as the underscore. In Unicode, alphanumeric characters are defined to be 
the general categories L + N (see 
https://unicode.org/reports/tr44/#General_Category_Values). If the 
:const:`ASCII` flag is used, only ``[a-zA-Z0-9_]`` is matched.

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[issue46567] Add Tcl/Tk builds for ARM64

[Niyas Sait]

Niyas Sait  added the comment:

Based on my investigation so far, I think Tcl/Tk package generated with VS 2022 
seems to have some issues when used with Tkinter. I could be wrong.

I've created https://github.com/python/cpython/pull/31603 to force the Tcl/Tk 
package build on the fly with VS 2019 and I can see it is passing all tests.

If my analysis is correct, I think it would be better to rebuild Tcl/Tk with VS 
2019 for cpython-bin-deps while we investigate the issue with the compiler.

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[issue46877] unittest.doModuleCleanups() does not exist

[Karthikeyan Singaravelan]

Change by Karthikeyan Singaravelan :


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[issue46541] Replace _Py_IDENTIFIER() with statically initialized objects.

[Christian Heimes]

Christian Heimes  added the comment:


New changeset 088dd76dba68c2538776d9920607f81e54544cbd by Dong-hee Na in branch 
'main':
bpo-46541: Remove unnecessary Py_VISIT (GH-31608)
https://github.com/python/cpython/commit/088dd76dba68c2538776d9920607f81e54544cbd


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[issue46877] unittest.doModuleCleanups() does not exist

[Martin Fischer]

New submission from Martin Fischer :

The unittest documentation[1] describes unittest.doModuleCleanups().

That function however doesn't exist since it's only in the unittest.case module 
and not re-exported in the unittest module (unlike addModuleCleanup).

So I think either the documentation should be corrected or doModuleCleanups 
should be re-exported in unittest/__init__.py to match the documentation.

[1]: https://docs.python.org/3.8/library/unittest.html

--
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components: Documentation
messages: 414177
nosy: docs@python, lisroach, michael.foord, push-f
priority: normal
severity: normal
status: open
title: unittest.doModuleCleanups() does not exist
type: enhancement
versions: Python 3.10, Python 3.11, Python 3.8, Python 3.9

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[issue46761] functools.update_wrapper breaks the signature of functools.partial objects

[Larry Hastings]

Larry Hastings  added the comment:

I emailed the Pydantic and FastAPI guys and didn't hear back.  Given what you 
found on their issue trackers, I think it's unlikely that they care a lot about 
this issue (but were too busy to reply).  It's far more likely that they don't 
care.

Doing a little research (git blame), it looks like the "follow the wrapped 
chain to find the original signature" work was done by Nick Coghlan about nine 
years ago; he touched both functools.update_wrapper and the inspect module.

The only other people to touch the code recently are Yuri and Batuhan.  I've 
nosied Nick and Batuhan (already looped in Yuri), just to ping them and see if 
they have any strong opinions.

If nobody has anything remarkable to say about it, honestly we probably *can* 
just merge your patch, Ofey.  I see your name is now marked with a star; are 
you now authorized to contribute to CPython?

(Note that I only glanced at your patch so far; if we were going to merge this 
bugfix I would of course first do a full review.)

--
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[issue46761] functools.update_wrapper breaks the signature of functools.partial objects

[Ofey Chan]

Ofey Chan  added the comment:

> Maybe we can loop in someone who works on a popular runtime function 
> introspection library (FastAPI, Pydantic) to see if they have any take on it.

I've checked issues of FastAPI and Pydantic. There is only one issue about 
`update_wrapper()`, and it's about documentation generation:

https://github.com/samuelcolvin/pydantic/issues/1032

Would it be proper to open an issue under FastAPI and Pydantic, to describe the 
situation, and collect their feedbacks?

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[issue46873] inspect.getsource with some lambdas in decorators does not get the full source

[Adam Hopkins]

Adam Hopkins  added the comment:

Duplicate of https://bugs.python.org/issue38854

Sorry I didn't come across our before submitting.

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status: open -> closed

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[issue44807] typing.Protocol silently overrides __init__ method of delivered class

[Adrian Garcia Badaracco]

Adrian Garcia Badaracco  added the comment:

Apologies if that was noise, I filed an issue on the MyPy issue tracker: 
https://github.com/python/mypy/issues/12261

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[issue44807] typing.Protocol silently overrides __init__ method of delivered class

[Guido van Rossum]

Guido van Rossum  added the comment:

If the problem is in mypy, it should be filed in the mypy tracker, not here.

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[issue46541] Replace _Py_IDENTIFIER() with statically initialized objects.

[Dong-hee Na]

Change by Dong-hee Na :


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[issue44807] typing.Protocol silently overrides __init__ method of delivered class

[Jelle Zijlstra]

Change by Jelle Zijlstra :


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[issue46870] Improper Input Validation in urlparse

[Karan]

Karan  added the comment:

Here are the results from other languages. Go parses incorrectly at the same 
time rust does it correctly.

Go- https://go.dev/play/p/nNMhyznuGpn
{Scheme:"http", Opaque:"@localhost", User:(*url.Userinfo)(nil), 
Host:"", Path:"", RawPath:"", ForceQuery:false, RawQuery:"", Fragment:"", 
RawFragment:""}


Rust- 
https://play.rust-lang.org/?version=stable=debug=2021=92681b56f7cbd62b7735c962a2f5321e
Url { scheme: "http", cannot_be_a_base: false, username: "", password: None, 
host: Some(Domain("localhost")), port: None, path: "/", query: None, fragment: 
None }

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[issue45326] Unexpected TypeError with type alias+issubclass+ABC

[Andrei Kulakov]

Change by Andrei Kulakov :


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type:  -> behavior

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[issue45326] Unexpected TypeError with type alias+issubclass+ABC

[Andrei Kulakov]

Andrei Kulakov  added the comment:

This error was added in https://bugs.python.org/issue33018 . See some 
discussion on that issue.

Note that first arg needs to be a type (i.e. instance of `type`) to avoid this 
error:

[ins] In [41]: class C(ABC):0

[ins] In [42]: issubclass(dict, C)
Out[42]: False

[ins] In [43]: issubclass('', C)  # TypeError: issubclass() arg 1 must be a 
class

[ins] In [44]: issubclass(typing.Dict, C)   # same error as above

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[issue44807] typing.Protocol silently overrides __init__ method of delivered class

[Adrian Garcia Badaracco]

Adrian Garcia Badaracco  added the comment:

While this is figured out, would it be possible to remove the silent 
overriding? This seems like something type checkers should be doing, not silent 
runtime modification of classes. Pyright already (correctly) checks this, so I 
think it would just need to be added to MyPy.

>>> class C(Protocol):
...   def __init__(self) -> None:
... print('init!')
...
>>> c = C()  # Pyright error, MyPy says it's okay

I came across this while trying to create a class that requires concrete 
subclasses to define a specific field, and it seems like Protocol is the only 
thing that can pull this off because of how type checkers special case it: 
https://gist.github.com/adriangb/6c1a001ee7035bad5bd56df70e0cf5e6

I don't particularly like this use of Protocol, but it works (aside from the 
overriding issue).

I don't know if this usage of implementing `__init__` on a protocol class 
should be valid or not, but I do think it's interesting that `__init__` is 
never called on the protocol class itself, even if the protocol class is the 
one defining it. It is only called on `MyAPIKey`, which is a concrete class 
that happens to inherit the implementation from a protocol class. So maybe that 
should be valid? I'm not sure.

But I do know that making type checkers enforce this instead runtime would 
allow this use case to work while still prohibiting the (in my opinion invalid) 
use case of calling `__init__` on the protocol class itself.

--
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status: pending -> open

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[issue46876] Walrus operator not in help

[Mohammad Mahdi Zojaji Monfared]

New submission from Mohammad Mahdi Zojaji Monfared :

Walrus oprator := not in help("symbols")
and help(":=") does not work.

--
components: Interpreter Core
files: walrus.png
messages: 414168
nosy: mmahdizojajim
priority: normal
severity: normal
status: open
title: Walrus operator not in help
type: behavior
versions: Python 3.10
Added file: https://bugs.python.org/file50651/walrus.png

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[issue36484] Can't reorder TLS 1.3 ciphersuites

[Sanchayan Ghosh]

Sanchayan Ghosh  added the comment:

Here is the PR as well. While I agree that there is no more a reason to reorder 
cipher suites and that we should use our certificates to basically ensure a 
secure connection, the advantage of the OpenSSL API is it provides us the 
function to influence the selection of cipher suites.

So, as a first step, I have added the binding for selecting TLS v1.3 cipher 
suites. And in 2 other pull requests, I will provide the API implementation for 
the other, for users who may just want a way to access OpenSSL through Python.

--
message_count: 4.0 -> 5.0
pull_requests: +29730
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/31607

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[issue36484] Can't reorder TLS 1.3 ciphersuites

[Sanchayan Ghosh]

Sanchayan Ghosh  added the comment:

I have written a function that will allow us to reorder TLS v1.3. Since I have 
tried to keep a 1-1 binding, you will have to first remove the cipher suites 
entirely by giving a blank string, and then add TLS v1.2 and v1.3 cipher suites.

--
keywords: +patch
nosy: +sanchayanghosh
Added file: 
https://bugs.python.org/file50650/0001-Add-TLS-v1.3-cipher-suite-set-function.patch

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[issue46748] Python.h includes stdbool.h

[Erlend E. Aasland]

Erlend E. Aasland  added the comment:

Can we close this?

--
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status: open -> pending

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[issue46868] Improve performance of math.prod with bignums (and functools.reduce?)

[Tim Peters]

Tim Peters  added the comment:

Hi. "It's pretty good for a lot of things" is precisely what I'm questioning. 
Name some, and please be specific ;-)

Tree reduction is very popular in the parallel processing world, for obvious 
reasons. But we're talking about a single thread here, and there aren't all 
that many associative binary operators (or, depending on implementation, they 
may need also to be commutative).

I gave floating * as an example: tree reduction buys nothing for accuracy, and 
would be both slower and consume more memory. Other associative operators for 
which all the same are true include bitwise &, bitwise |, bitwise ^, min, and 
max.

Floating + can benefit for accuracy, but we already have math.fsum() for that, 
which delivers the most accurate possible result.

The only unaddressed example we have here so far that could actually benefit is 
bigint *. If that's the real use case, fine, but there are better ways to 
address that case.

I've searched in vain for other languages that try to address this "in 
general", except in the context of parallelization. As Guido will tell you, the 
only original idea in Python is adding an "else" clause to loops ;-)

In any case, I don't believe this belongs hiding in reduce(). As above, it's a 
net loss for most binary operators. Too close to "attractive nuisance" 
territory. Adding a new, e.g., treereduce() would be better - provided that it 
is in fact "pretty good for a lot of things".

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[issue46873] inspect.getsource with some lambdas in decorators does not get the full source

[Adam Hopkins]

Change by Adam Hopkins :


--
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pull_requests: +29728
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/31605

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[issue46871] Lambda can't be pickled with "spawn" and only "fork"

[Kyle Smith]

Change by Kyle Smith :


--
title: BaseManager.register no longer supports lambda callable 3.8.12+ -> 
Lambda can't be pickled with "spawn" and only "fork"

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[issue46875] Missing name in TaskGroup.__repr__()

[Joongi Kim]

Joongi Kim  added the comment:

Ah, I'm confused with aiotools.TaskGroup (originated from EdgeDB's TaskGroup) 
code while browsing both aiotools and stdlib asyncio.TaskGroup source codes.

The naming facility seems to be intentionally removed when ported to the stdlib.
So I am closing this and sorry fo the noise.

Though, is there any particular reason to remove it?
My guess is that you think that TaskGroup is more like a control-flow structure 
which does not need to be named, just like we don't name "for loop" for 
instance.

--
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status: open -> closed

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[issue46875] Missing name in TaskGroup.__repr__()

[Joongi Kim]

New submission from Joongi Kim :

The __repr__() method in asyncio.TaskGroup does not include self._name.
I think this is a simple overlook, because asyncio.Task includes the task name 
in __repr__(). :wink:

https://github.com/python/cpython/blob/345572a1a02/Lib/asyncio/taskgroups.py#L28-L42

I'll make a simple PR to fix it.

--
components: asyncio
messages: 414162
nosy: achimnol, asvetlov, gvanrossum, yselivanov
priority: normal
severity: normal
status: open
title: Missing name in TaskGroup.__repr__()
versions: Python 3.11

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[issue46843] PersistentTaskGroup API

[Joongi Kim]

Joongi Kim  added the comment:

I have updated the PersistentTaskGroup implementation referring 
asyncio.TaskGroup and added more detailed test cases, which works with the 
latest Python 3.11 GitHub checkout.

https://github.com/achimnol/aiotools/pull/36/files

Please have a look at the class docstring.
There are two different usage: async context manager vs. attributes of 
long-lived objects.

One of the point is to "revive" asyncio.gather() with return_exceptions=True 
but let it handle/report exceptions immediately with customizable exception 
handler.

Currently two-phase shutdown is not implemented yet as I'm still thinking about 
how to adapt the current implementation.

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[issue21761] [doc] language reference describes the role of module.__file__ inaccurately

[Alex Waygood]

Alex Waygood  added the comment:

Hi Vidhya — @slateny submitted a PR for this issue only two days ago (you can 
see that it's linked to this BPO issue in the "Pull Requests" field). I think 
it would be good to wait until that has been reviewed before doing any work on 
a possible PR for this issue :)

If you'd like to help out with this issue, you'd of course be very welcome to 
submit a review for @slateny's patch.

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[issue21761] [doc] language reference describes the role of module.__file__ inaccurately

[Vidhya]

Vidhya  added the comment:

If this is still open, I would like to work on this. Please let me know.

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[issue46852] Remove the float.__setformat__() method

[Mark Dickinson]

Mark Dickinson  added the comment:

> I reopen the issue for the second part of my plan

Hmm. That sounds like it should be a separate issue, or at the least, this 
issue should be retitled. It's helpful to keep issue titles accurate.

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[issue46849] Memory problems detected using Valgrind

[Terry J. Reedy]

Change by Terry J. Reedy :


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[issue46786] embed, source, track, wbr HTML elements not considered empty

[Stefan Behnel]

Change by Stefan Behnel :


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

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[issue46786] embed, source, track, wbr HTML elements not considered empty

[Stefan Behnel]

Stefan Behnel  added the comment:


New changeset 345572a1a0263076081020524016eae867677cac by Jannis Vajen in 
branch 'main':
bpo-46786: Make ElementTree write the HTML tags embed, source, track, wbr as 
empty tags (GH-31406)
https://github.com/python/cpython/commit/345572a1a0263076081020524016eae867677cac


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[issue46873] inspect.getsource with some lambdas in decorators does not get the full source

[Alex Waygood]

Change by Alex Waygood :


--
type:  -> behavior
versions:  -Python 3.7, Python 3.8

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[issue46873] inspect.getsource with some lambdas in decorators does not get the full source

[Adam Hopkins]

Adam Hopkins  added the comment:

Sorry about that. I am doing some more digging to see if I can find the route 
of it and a proposal for a non-breaking patch. The problem seems to be in 
BlockFinder.tokeneater.

--
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versions: +Python 3.7, Python 3.8

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[issue46871] BaseManager.register no longer supports lambda callable 3.8.12+

[Kyle Smith]

Kyle Smith  added the comment:

Since you were able to help me scope that this is probably an MacOS specific 
issue, I was able to find this report:
https://github.com/pytest-dev/pytest-flask/issues/104

Setting `multiprocessing.set_start_method("fork")` _BEFORE_ the code is called 
resolves this.

I don't understand enough of MP to understand why this is a problem, and why I 
need to do this, but alas, at least I have a path forward. 


Since this behavior changed, and it _doesn't_ work cleanly anymore with MacOS, 
I would say this is a bug (from my casual understanding of python), because 
it's mentioned in the documentation that using "fork" can be problematic and 
lead to crashes outlined in bpo-33725.
> Changed in version 3.8: On macOS, the spawn start method is now the default.
> The fork start method should be considered unsafe as it can lead to crashes 
> of the subprocess. See bpo-33725.

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[issue46873] inspect.getsource with some lambdas in decorators does not get the full source

[Alex Waygood]

Alex Waygood  added the comment:

I'm removing 3.7 and 3.8 from the "versions" field, since they're currently 
only accepting patches for security-related bugs. But thanks for testing on 
those versions as well — that's useful information!

--
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nosy: +AlexWaygood, yselivanov
type:  -> behavior
versions:  -Python 3.7, Python 3.8

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[issue46871] BaseManager.register no longer supports lambda callable 3.8.12+

[Kyle Smith]

Kyle Smith  added the comment:

Interesting. I did try between MacOS (12.2) and Ubuntu since I have servers 
with older python versions. For scoping then, this appears to be related only 
to MacOS since you were able to confirm it working correctly on Linux. 

The code is the same, but here's the entire traceback. All below examples were 
run on MacOS:

bash-3.2$ python3 --version
Python 3.9.6
bash-3.2$ python3 main.py
Traceback (most recent call last):
  File "/Volumes/Workspace/co/router/main.py", line 21, in 
shared_dict, shared_lock = get_shared_state(HOST, PORT, KEY)
  File "/Volumes/Workspace/co/router/main.py", line 12, in get_shared_state
manager.start()
  File 
"/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/managers.py",
 line 553, in start
self._process.start()
  File 
"/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/process.py",
 line 121, in start
self._popen = self._Popen(self)
  File 
"/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/context.py",
 line 284, in _Popen
return Popen(process_obj)
  File 
"/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/popen_spawn_posix.py",
 line 32, in __init__
super().__init__(process_obj)
  File 
"/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/popen_fork.py",
 line 19, in __init__
self._launch(process_obj)
  File 
"/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/popen_spawn_posix.py",
 line 47, in _launch
reduction.dump(process_obj, fp)
  File 
"/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/reduction.py",
 line 60, in dump
ForkingPickler(file, protocol).dump(obj)
AttributeError: Can't pickle local object 'get_shared_state..'


Running this with 3.7.9 works:
bash-3.2$ python3.7 --version
Python 3.7.9
bash-3.2$ python3.7 main.py
{'number': 0, 'text': 'Hello World'}


If it's of interest, 3.10.2 is also failing on Mac.

bash-3.2$ /usr/local/opt/python\@3.10/bin/python3 --version
Python 3.10.2
bash-3.2$ /usr/local/opt/python\@3.10/bin/python3 main.py
Traceback (most recent call last):
  File "/Volumes/Workspace/co/router/main.py", line 21, in 
shared_dict, shared_lock = get_shared_state(HOST, PORT, KEY)
  File "/Volumes/Workspace/co/router/main.py", line 12, in get_shared_state
manager.start()
  File 
"/usr/local/Cellar/python@3.10/3.10.2/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/managers.py",
 line 562, in start
self._process.start()
  File 
"/usr/local/Cellar/python@3.10/3.10.2/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/process.py",
 line 121, in start
self._popen = self._Popen(self)
  File 
"/usr/local/Cellar/python@3.10/3.10.2/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/context.py",
 line 284, in _Popen
return Popen(process_obj)
  File 
"/usr/local/Cellar/python@3.10/3.10.2/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/popen_spawn_posix.py",
 line 32, in __init__
super().__init__(process_obj)
  File 
"/usr/local/Cellar/python@3.10/3.10.2/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/popen_fork.py",
 line 19, in __init__
self._launch(process_obj)
  File 
"/usr/local/Cellar/python@3.10/3.10.2/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/popen_spawn_posix.py",
 line 47, in _launch
reduction.dump(process_obj, fp)
  File 
"/usr/local/Cellar/python@3.10/3.10.2/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/reduction.py",
 line 60, in dump
ForkingPickler(file, protocol).dump(obj)
AttributeError: Can't pickle local object 'get_shared_state..'

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[issue46874] [sqlite3] optimise user-defined functions

[Erlend E. Aasland]

Change by Erlend E. Aasland :


--
keywords: +patch
pull_requests: +29727
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/31604

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[issue46852] Remove the float.__setformat__() method

[STINNER Victor]

STINNER Victor  added the comment:

I reopen the issue for the second part of my plan:

"Once they will be removed, it will become possible to move the detection of 
the IEEE 754 format in the build step (./configure script) rather than doing 
the detection at runtime (slower). It would remove an "if" in _PyFloat_Pack4() 
and _PyFloat_Pack8(), and allow to specialize these functions for the detected 
format at build time. These functions are used by serialization formats: 
marshal, pickle and struct."

--
resolution: fixed -> 
status: closed -> open

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[issue46874] [sqlite3] optimise user-defined functions

[Erlend E. Aasland]

Change by Erlend E. Aasland :


--
assignee:  -> erlendaasland

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[issue46874] [sqlite3] optimise user-defined functions

[Erlend E. Aasland]

New submission from Erlend E. Aasland :

Currently, the `step` method of user-defined functions is looked up using 
`PyObject_GetAttrString`. Using an interned string and `PyObject_GetAttr`, we 
can speed up this a little bit.

--
components: Library (Lib)
messages: 414151
nosy: erlendaasland
priority: normal
severity: normal
status: open
title: [sqlite3] optimise user-defined functions
versions: Python 3.11

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[issue46852] Remove the float.__setformat__() method

[Mark Dickinson]

Mark Dickinson  added the comment:

Thanks, Victor. I think this can be closed now.

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

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[issue46873] inspect.getsource with some lambdas in decorators does not get the full source

[Adam Hopkins]

New submission from Adam Hopkins :

I believe the following produces an unexpected behavior:

from inspect import getsource


def bar(*funcs):
def decorator(func):
return func

return decorator


@bar(lambda x: bool(True), lambda x: False)
async def foo():
...


print(getsource(foo))

The output shows only the decorator declaration and none of the function:

@bar(lambda x: bool(True), lambda x: False)


>From my investigation, it seems like this requires the following conditions to 
>be true:
- lambdas are passed in decorator arguments
- there is more than one lambda
- at least one of the lambdas has a function call

Passing the lambdas as default function arguments seems okay:

async def foo(bar=[lambda x: bool(True), lambda x: False]):
...

A single lambda seems okay:

@bar(lambda x: bool(True))
async def foo():
...

Lambdas with no function calls also seem okay:

@bar(lambda x: not x, lambda: True)
async def foo():
...

Tested this on:
- Python 3.10.2
- Python 3.9.9
- Python 3.8.11
- Python 3.7.12

--
messages: 414149
nosy: ahopkins2
priority: normal
severity: normal
status: open
title: inspect.getsource with some lambdas in decorators does not get the full 
source
versions: Python 3.10, Python 3.7, Python 3.8, Python 3.9

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[issue46872] Odd handling of signal raised if an illegal syscall is attempted on Android

[Dan Snider]

New submission from Dan Snider :

On Android, the following calls generate a SIGSYS signal that is neither 
blocked by pthread_sigmask(SIG_BLOCK, {SIGSYS}) nor ignored after its handler 
is set to SIG_IGN:

(os.chroot(path))
os.setgid(rgid)
os.setuid(ruid) 
(os.setegid(gid))
os.setregid(rgid, egid)
os.setreuid(ruid, euid)
os.setresgid(rgid, egid, sgid)
time.clock_settime(clock, time)
time.clock_settime_ns(clock, time)
(socket.sethostname(name))


On the other hand, signal(SIGSYS, lambda s, p: None) will catch the signal, but 
based on frame it receives (None), I suspect this is a coincidence. Also, the 
functions with parenthesized names in that list raise the equivalent of 
OSError(0, "Error", "%s"%args[0]).

--
components: C API
messages: 414148
nosy: bup
priority: normal
severity: normal
status: open
title: Odd handling of signal raised if an illegal syscall is attempted on 
Android
type: behavior

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[issue46849] Memory problems detected using Valgrind

[Christian Heimes]

Christian Heimes  added the comment:

Valgrind does not understand Python's custom obmalloc allocator. You have to 
run valgrind with our suppression rules Misc/valgrind-python.supp to ignore 
false errors.

--
nosy: +christian.heimes

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[issue46806] Overlapping PYTHONPATH may cause import already imported module

[aklajnert]

aklajnert  added the comment:

Honestly, it seems to me that the documents that you mentioned are discussing 
different problems, that may be related, but are not the same as the one I've 
described here.

I'm not arguing - you're clearly more experienced and that's not my area of 
expertise, but out of curiosity - can you mention some example use cases where 
the behavior I've described is useful?

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[issue46849] Memory problems detected using Valgrind

[Christian Heimes]

Change by Christian Heimes :


--
Removed message: https://bugs.python.org/msg414097

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[issue46799] ShareableList memory bloat and performance improvement

[Ting-Che Lin]

Ting-Che Lin  added the comment:

So I wrote a patch for this issue and published submitted a MR. When I was 
working on the patch, I realized that there is another issue related to how 
string and byte array size alignment is calculated. As seen here: 
https://github.com/python/cpython/blob/3.10/Lib/multiprocessing/shared_memory.py#L303.
 

>>> from multiprocessing.shared_memory import ShareableList
>>> s_list = ShareableList(["12345678"])
>>> s_list.format
'16s'

I changed the calculation of 
self._alignment * (len(item) // self._alignment + 1),
to
self._alignment * max(1, (len(item) - 1) // self._alignment + 1)

With the patch, this will give
>>> from multiprocessing.shared_memory import ShareableList
>>> s_list = ShareableList(["12345678"])
>>> s_list.format
'8s'

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[issue46567] Add Tcl/Tk builds for ARM64

[Niyas Sait]

Change by Niyas Sait :


--
nosy: +nsait-linaro
nosy_count: 5.0 -> 6.0
pull_requests: +29726
pull_request: https://github.com/python/cpython/pull/31603

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[issue46868] Improve performance of math.prod with bignums (and functools.reduce?)

[benrg]

benrg  added the comment:

My example used ints, but I was being deliberately vague when I said "bignums". 
Balanced-tree reduction certainly isn't optimal for ints, and may not be 
optimal for anything, but it's pretty good for a lot of things. It's the 
comparison-based sorting of reduction algorithms.

* When the inputs are of similar sizes, it tends to produce intermediate 
operands of similar sizes, which helps with Karatsuba multiplication (as you 
said).

* When the inputs are of different sizes, it limits the "damage" any one of 
them can do, since they only participate in log2(n) operations each.

* It doesn't look at the values, so it works with third-party types that are 
unknown to the stdlib.

There's always a fallback case, and balanced reduction is good for that. If 
there's a faster path for ints that looks at their bit lengths, great.

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