[issue42041] venv subprocess call to python resolves to wrong interpreter

New submission from Mark Keller : Hey, Wanted to report this weird behavior I saw recently. Let me first explain how to reproduce and then talk about where I think the issue comes from. I attached a tar.gz file with 2 Python files in it. Here's how to reproduce: 0. Make sure that pytest is u

[issue35823] Use vfork() in subprocess on Linux

Alexey Izbyshev added the comment: Well, much later than promised, but I'm picking it up. Since in the meantime support for setting uid/gid/groups was merged, and I'm aware about potential issues with calling corresponding C library functions in a vfork()-child, I asked a question on musl ma

[issue42040] Change IDLE 'more information' splash line, change doc name

New submission from Terry J. Reedy : IDLE currently follows the version and system info line with Type "help", "copyright", "credits" or "license()" for more information. The last 3 are nearly useless, and duplicate the availability of the documents in a better format from About IDLE, where

[issue42030] Drop support for dynload_aix

Change by Inada Naoki : -- nosy: +Michael.Felt ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.p

[issue42030] Drop support for dynload_aix

Change by Inada Naoki : -- nosy: +David.Edelsohn ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail

[issue24845] IDLE functional/integration testing

Change by Tal Einat : -- nosy: +taleinat nosy_count: 4.0 -> 5.0 pull_requests: +21677 pull_request: https://github.com/python/cpython/pull/22682 ___ Python tracker ___

[issue41561] test_ssl fails in Ubuntu 20.04: test_min_max_version_mismatch

Bug Reporter added the comment: I reported a bug at https://bugs.launchpad.net/ubuntu/+source/openssl/+bug/1899878 -- ___ Python tracker ___ _

[issue41984] Empty __slots__ can create untracked reference cycles

Change by miss-islington : -- pull_requests: +21676 pull_request: https://github.com/python/cpython/pull/22707 ___ Python tracker ___ __

[issue41984] Empty __slots__ can create untracked reference cycles

Brandt Bucher added the comment: New changeset d197b2bb3e401bed53987b65a7ceb6c712c4f5bd by Miss Skeleton (bot) in branch '3.9': bpo-41984: GC track all user classes (GH-22701/GH-22702) https://github.com/python/cpython/commit/d197b2bb3e401bed53987b65a7ceb6c712c4f5bd --

[issue42039] Add gc.track and gc.untrack

Inada Naoki added the comment: There are many code that an object is tracked/untracked. This API can cause fatal error too easily. I think this API should be exposed only in _testcapi. -- nosy: +methane ___ Python tracker

[issue41894] UnicodeDecodeError during load failure in non-UTF-8 locale

Inada Naoki added the comment: Thank you for finding/fixing. -- resolution: -> fixed stage: patch review -> resolved status: open -> closed ___ Python tracker ___ ___

[issue41894] UnicodeDecodeError during load failure in non-UTF-8 locale

miss-islington added the comment: New changeset f07448bef48d645c8cee862b1f25a99003a6140e by Miss Skeleton (bot) in branch '3.9': bpo-41894: Fix UnicodeDecodeError while loading native module (GH-22466) https://github.com/python/cpython/commit/f07448bef48d645c8cee862b1f25a99003a6140e ---

[issue41894] UnicodeDecodeError during load failure in non-UTF-8 locale

miss-islington added the comment: New changeset 47ca6799725bb4c40953bb26ebcd726d1d766361 by Miss Skeleton (bot) in branch '3.8': bpo-41894: Fix UnicodeDecodeError while loading native module (GH-22466) https://github.com/python/cpython/commit/47ca6799725bb4c40953bb26ebcd726d1d766361 ---

[issue41894] UnicodeDecodeError during load failure in non-UTF-8 locale

Change by miss-islington : -- pull_requests: +21675 pull_request: https://github.com/python/cpython/pull/22705 ___ Python tracker ___ __

[issue41894] UnicodeDecodeError during load failure in non-UTF-8 locale

Inada Naoki added the comment: New changeset 2d2af320d94afc6561e8f8adf174c9d3fd9065bc by Kevin Adler in branch 'master': bpo-41894: Fix UnicodeDecodeError while loading native module (GH-22466) https://github.com/python/cpython/commit/2d2af320d94afc6561e8f8adf174c9d3fd9065bc -- ___

[issue41894] UnicodeDecodeError during load failure in non-UTF-8 locale

Change by miss-islington : -- nosy: +miss-islington nosy_count: 3.0 -> 4.0 pull_requests: +21674 pull_request: https://github.com/python/cpython/pull/22704 ___ Python tracker _

[issue41984] Empty __slots__ can create untracked reference cycles

Change by Brandt Bucher : -- resolution: -> fixed stage: patch review -> resolved status: open -> closed ___ Python tracker ___ ___

[issue41984] Empty __slots__ can create untracked reference cycles

Brandt Bucher added the comment: New changeset c13b847a6f913b72eeb71651ff626390b738d973 by Brandt Bucher in branch 'master': bpo-41984: GC track all user classes (GH-22701) https://github.com/python/cpython/commit/c13b847a6f913b72eeb71651ff626390b738d973 --

[issue41984] Empty __slots__ can create untracked reference cycles

Change by miss-islington : -- pull_requests: +21673 pull_request: https://github.com/python/cpython/pull/22703 ___ Python tracker ___ __

[issue41984] Empty __slots__ can create untracked reference cycles

Change by miss-islington : -- nosy: +miss-islington nosy_count: 4.0 -> 5.0 pull_requests: +21672 pull_request: https://github.com/python/cpython/pull/22702 ___ Python tracker _

[issue41984] Empty __slots__ can create untracked reference cycles

Change by Brandt Bucher : -- keywords: +patch pull_requests: +21671 stage: -> patch review pull_request: https://github.com/python/cpython/pull/22701 ___ Python tracker ___ __

[issue42019] Override MagicMock special methods

Irit Katriel added the comment: I don't know whether this is intended behaviour of not, but it seems that MagicMock's __init__ is setting the magic methods, every time a mock instance is created. I was able to achieve what you tried to write with this class definition - it sets __len__ after

[issue41984] Empty __slots__ can create untracked reference cycles

Brandt Bucher added the comment: Actually, never mind. Because of the way finalization works, we need to create untracked *types* for these tests, not untracked *instances*. PR up soon. -- ___ Python tracker _

[issue42036] Unchecked return in Modules/posixmodule.c from multiple function calls

Change by Sagar Pant : -- components: +Library (Lib) -C API ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: h

[issue42034] Unchecked return in Objects/typeobject.c and possible uninitialized variables in cls and new_mro

Change by Sagar Pant : -- components: +Library (Lib) -C API ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: h

[issue41972] bytes.find consistently hangs in a particular scenario

Dennis Sweeney added the comment: The most recent batch of commits added a jump table. Between master and PR 22679 now, there are 151 cases slower than master and 463 that faster than master. The slower cases are at most twice as slow, but the faster cases are often 10-20x faster. I could add

[issue42023] Argparse: Add a "display" arg

ThatXliner added the comment: In the end, I think python's argparse needs more built-in help formatters... Should I close this? -- ___ Python tracker ___ ___

[issue42023] Argparse: Add a "display" arg

ThatXliner added the comment: Editing the description, etc. seems like a good way to do this. But it seems "hacky". The other answer on StackOverflow implements a custom class which does nice things, but not what I want. -- ___ Python tracker

[issue42023] Argparse: Add a "display" arg

paul j3 added the comment: Some StackOverFlow answers cusomizing this help method: https://stackoverflow.com/questions/23936145/python-argparse-help-message-disable-metavar-for-short-options https://stackoverflow.com/questions/18275023/dont-show-long-options-twice-in-print-help-from-argparse

[issue41984] Empty __slots__ can create untracked reference cycles

Brandt Bucher added the comment: I'll hold off until https://bugs.python.org/issue42039 is resolved. -- ___ Python tracker ___ ___

[issue42039] Add gc.track and gc.untrack

Change by Brandt Bucher : -- nosy: +brandtbucher ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail

[issue42023] Argparse: Add a "display" arg

ThatXliner added the comment: > So if you can get by with just customizing _format_action_invocation, there's > no need for further action here. Then maybe we could just make a new function that takes 2 arguments: Name of another action class (or the action class itself), and a tuple of the

[issue42023] Argparse: Add a "display" arg

ThatXliner added the comment: Should I rename this to "Argparse: finer control on help txt" -- ___ Python tracker ___ ___ Python-bu

[issue42039] Add gc.track and gc.untrack

Change by Pablo Galindo Salgado : -- nosy: +tim.peters stage: patch review -> ___ Python tracker ___ ___ Python-bugs-list mailing l

[issue42039] Add gc.track and gc.untrack

Change by Pablo Galindo Salgado : -- keywords: +patch pull_requests: +21669 stage: -> patch review pull_request: https://github.com/python/cpython/pull/22699 ___ Python tracker __

[issue42039] Add gc.track and gc.untrack

New submission from Pablo Galindo Salgado : We have C-API calls to track and untrack objects. Having similar calls in Python can be usefull to selectively deactivate the garbage collector for some objects for performance, debugging or testing purposes. For instance, in https://bugs.python.org

[issue42023] Argparse: Add a "display" arg

paul j3 added the comment: That method could be customized in a HelpFormatter subclass. There already are several subclasses (documented), and writing your own is allowed, if not actually encouraged. https://docs.python.org/3/library/argparse.html#formatter-class Adding an extra parameter

[issue41984] Empty __slots__ can create untracked reference cycles

Pablo Galindo Salgado added the comment: In any case, you can expose: https://docs.python.org/3/c-api/gcsupport.html#c.PyObject_GC_UnTrack in the testcapi module -- ___ Python tracker _

[issue41984] Empty __slots__ can create untracked reference cycles

Pablo Galindo Salgado added the comment: > I'm not sure that's true... :) Oh boy, I need toehemyeah I will be back inone second... -- ___ Python tracker ___ _

[issue41984] Empty __slots__ can create untracked reference cycles

Brandt Bucher added the comment: > there is gc.untrack() I'm not sure that's true... :) Although perhaps track()/untrack() functions *could* be useful to add to the gc module... but that's a separate conversation. -- ___ Python tracker

[issue41984] Empty __slots__ can create untracked reference cycles

Pablo Galindo Salgado added the comment: > I think I can just create a simple utility in _testcapi to untrack instances > for this purpose. I have the feeling that I am misunderstanding what you refer to, but if is **untrack** what you need, there is gc.untrack() -- __

[issue41984] Empty __slots__ can create untracked reference cycles

Brandt Bucher added the comment: No problem. I just need to rework some hacks in test_finalization where we use empty __slots__ to create non-GC types. I think I can just create a simple utility in _testcapi to untrack instances for this purpose. -- _

[issue41984] Empty __slots__ can create untracked reference cycles

Pablo Galindo Salgado added the comment: Thanks a lot, Brandt for doing the benchmarking! I think that unpack_sequence is **very** affected by code locality. I was debugging it recently with Linux perf (https://perf.wiki.kernel.org/index.php/Main_Page) and it shows that is extremely affecte

[issue41984] Empty __slots__ can create untracked reference cycles

Brandt Bucher added the comment: Using the following patch: https://github.com/python/cpython/compare/master...brandtbucher:track-all-heap-types I got the following pyperformance results (with PGO/LTO and CPU isolation, insignificant rows omitted): 2020-10-13_20-04-master-7992579cd27f.json.

[issue42038] Tracemalloc's format() doc contradictory

New submission from Lisa Roach : Tracemalloc's format documentation (https://docs.python.org/3/library/tracemalloc.html#tracemalloc.Traceback.format) says first: "Format the traceback as a list of lines with newlines." then: "Similar to the traceback.format_tb() function, except that format

[issue42038] Tracemalloc's format() doc contradictory

Change by Lisa Roach : -- keywords: +easy, newcomer friendly ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe:

[issue41972] bytes.find consistently hangs in a particular scenario

Tim Peters added the comment: For completeness, a link to the python-dev thread about this: https://mail.python.org/archives/list/python-...@python.org/thread/ECAZN35JCEE67ZVYHALRXDP4FILGR53Y/#4IEDAS5QAHF53IV5G3MRWPQAYBIOCWJ5 -- ___ Python tracker

[issue42024] Exception ignored in: .remove at 0x7f6a325f2ea0>

Zachary Ware added the comment: As mentioned in my first message, Python 3.5.4 has been out of support for over 2.5 years now, and 3.5 as a whole has been out of support for a month now. You'll need to show the problem using Python 3.8.6 or 3.9.0 for anything to be done about it here.

[issue42024] Exception ignored in: .remove at 0x7f6a325f2ea0>

jayesh added the comment: Please check my attached log file. In that, I am printing ansible version which shows python 3.5.4. Let me know any other info required from my side. -- ___ Python tracker _

[issue41904] datetime.datetime.today makes no sense and should be removed

Change by Alexander Belopolsky : -- resolution: -> wont fix stage: -> resolved status: open -> closed ___ Python tracker ___ ___ P

[issue42023] Argparse: Add a "display" arg

ThatXliner added the comment: >However, I can imagine adding a variable that gives the user full control over >the action-invocation. In: argparse.HelpFormatter._format_action_invocation method. That's what I'm trying to change. If there was a public API/method for manipulating the lef

[issue41904] datetime.datetime.today makes no sense and should be removed

Raymond Hettinger added the comment: I concur with the other respondents. This ship has sailed. -- nosy: +rhettinger ___ Python tracker ___ __

[issue39337] codecs.lookup() ignores non-ASCII characters, whereas encodings.normalize_encoding() copies them

hai shi added the comment: Thanks for everyone's continus review :) -- ___ Python tracker ___ ___ Python-bugs-list mailing list Uns

[issue41904] datetime.datetime.today makes no sense and should be removed

Alexander Belopolsky added the comment: I agree that having some of datetime.now([tz]) functionality replicated in datetime.today() makes little sense. However, the presence of this method in datetime class is a consequence of datetime being a subclass of the date class. The latter was a de

[issue39337] codecs.lookup() ignores non-ASCII characters, whereas encodings.normalize_encoding() copies them

STINNER Victor added the comment: Thanks Hai Shi for the change and for new codecs and encodings tests. -- resolution: -> fixed stage: patch review -> resolved status: open -> closed versions: +Python 3.10 -Python 3.9 ___ Python tracker

[issue41939] 3.9.0 test_site warning: "urllib.requests._opener was modified by test_site"

STINNER Victor added the comment: You're welcome ;-) -- ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: http

[issue39337] codecs.lookup() ignores non-ASCII characters, whereas encodings.normalize_encoding() copies them

STINNER Victor added the comment: New changeset c5b049b91ca50c615f9a5425055c2b79a82ac547 by Hai Shi in branch 'master': bpo-39337: encodings.normalize_encoding() now ignores non-ASCII characters (GH-22219) https://github.com/python/cpython/commit/c5b049b91ca50c615f9a5425055c2b79a82ac547 --

[issue42036] Unchecked return in Modules/posixmodule.c from multiple function calls

Change by Roundup Robot : -- keywords: +patch nosy: +python-dev nosy_count: 1.0 -> 2.0 pull_requests: +21668 stage: -> patch review pull_request: https://github.com/python/cpython/pull/22696 ___ Python tracker _

[issue40352] SocketHandler silently drops log messages on re-connect

Oleg Nykolyn added the comment: There are multiple servers running in Kubrnetes cluster - API servers based on Django, celery workers, etc. All of them send logs to AWS TCP balancer, which acts as balancer for vector service[1], which send logs to Elasticsearch. Basically we have following lo

[issue42037] Documentation confusion in CookieJar functions

New submission from Markus Israelsson : The documentation in https://docs.python.org/3.8/library/http.cookiejar.html#http.cookiejar.CookieJar claims the following for functions add_cookie_header and extract_cookies. *** The request object (usually a urllib.request.Request instance) must suppor

[issue42036] Unchecked return in Modules/posixmodule.c from multiple function calls

New submission from Sagar Pant : The return value of a function that is potentially used to initialize a local variable is not checked. Therefore, reading the local variable may result in undefined behavior. Our AI analyzer flagged it to be a potential bug as it found another usage of the fun

[issue41904] datetime.datetime.today makes no sense and should be removed

Damian Yurzola added the comment: Sorry I got my "current" wrong and I can't find the edit button Here again: > "How long is it until Christmas?" # Current implementation In [23]: datetime.datetime(2020, 12, 25) - datetime.datetime.today() Out[23]: datetime.timedelta(days=71, seconds=53018,

[issue41904] datetime.datetime.today makes no sense and should be removed

Damian Yurzola added the comment: It took me a while to collect my thoughts but here you go. Advanced users don't have a problem. They'll trade in date or datetime objects explicitly. The "proof" is I could not find any github repo with more than one start that'll call datetime.today(). The

[issue42032] Setting PYTHONPYCACHEPREFIX using ~ (tilde) creates a "~" folder

Veronica Olsen added the comment: > AFAIK, tilde expansion is entirely up to your shell rather than Python Yes, I am uncertain what exactly is going on here. Whatever ends up in the sys.pycache_prefix variable is different with the same environment variable setting on the two systems. It may

[issue42034] Unchecked return in Objects/typeobject.c and possible uninitialized variables in cls and new_mro

Change by Roundup Robot : -- keywords: +patch nosy: +python-dev nosy_count: 1.0 -> 2.0 pull_requests: +21666 stage: -> patch review pull_request: https://github.com/python/cpython/pull/22695 ___ Python tracker _

[issue30934] Document how to run coverage for repository idlelib files.

Tal Einat added the comment: See a cross-platform script in PR GH-22694. -- ___ Python tracker ___ ___ Python-bugs-list mailing lis

[issue30934] Document how to run coverage for repository idlelib files.

Change by Tal Einat : -- keywords: +patch pull_requests: +21665 stage: needs patch -> patch review pull_request: https://github.com/python/cpython/pull/22694 ___ Python tracker ___

[issue42024] Exception ignored in: .remove at 0x7f6a325f2ea0>

Zachary Ware added the comment: Unfortunately, no guarantees that upgrading will fix things for you. However, there's nothing we can do here until you can show that the issue still exists in a supported version of Python. -- ___ Python tracker <

[issue42032] Setting PYTHONPYCACHEPREFIX using ~ (tilde) creates a "~" folder

Zachary Ware added the comment: AFAIK, tilde expansion is entirely up to your shell rather than Python (unless you use something like `os.path.expanduser` in your own program). A few debugging questions: 1) What version of what shell(s) do you have on each system? 2) What value do you get fr

[issue42035] [C API] PyType_GetSlot cannot get tp_name

Change by STINNER Victor : -- nosy: +corona10, petr.viktorin title: PyType_GetSlot cannot get tp_name -> [C API] PyType_GetSlot cannot get tp_name ___ Python tracker ___ _

[issue42035] PyType_GetSlot cannot get tp_name

New submission from fancitron : In the Limited API (where PyTypeObject is opaque), there is no way to retrieve the tp_name of a type object. The PyType_GetSlot() function doesn’t define a slot ID Py_tp_name. This makes it inconvenient to port existing code to the Limited API. Is this intent

[issue42034] Unchecked return in Objects/typeobject.c and possible uninitialized variables in cls and new_mro

New submission from Sagar Pant : The return value of a function that is potentially used to initialize a local variable is not checked. Therefore, reading the local variable may result in undefined behavior. Our AI analyzer found that this function is called for a total of 43 times. Out of t

[issue41918] exec fails to take locals into account when running list comprehensions or functions

Quentin Peter added the comment: Fails for functions as well: ``` In [4]: exec(compile('print(my_var)\ndef a():\n print(my_var)\na()', '', 'exec'), globals(), {"my_var": 0}) 0 Traceback (most recent call last): File "", line 1, in exec(compile('print(my_var)\ndef a():\n print(my_var)\na()',

[issue20184] Derby #16: Convert 50 sites to Argument Clinic across 9 files

Change by Serhiy Storchaka : -- pull_requests: +21664 pull_request: https://github.com/python/cpython/pull/22693 ___ Python tracker ___

[issue42033] Seemingly unnecessary complexification of foo(**kw)

New submission from Xavier Morel : Following bpo-39320 the highly specialised bytecode for vararg calls were replaced by simpler ones, but there seems to be at least one area where the generated bytecode regressed for possibly no reason? In Python 3.8, foo(**var) compiles to: 0 LOAD_GLOBAL

[issue41876] Add __repr__ for Tkinter Font objects

Serhiy Storchaka added the comment: New changeset b4d895336a4692c95b4533adcc5c63a489e5e4e4 by Anatoliy Platonov in branch 'master': bpo-41876: Overload __repr__ for tkinter Font objects (GH-22450) https://github.com/python/cpython/commit/b4d895336a4692c95b4533adcc5c63a489e5e4e4 --

[issue41876] Add __repr__ for Tkinter Font objects

Change by Serhiy Storchaka : -- resolution: -> fixed stage: patch review -> resolved status: open -> closed ___ Python tracker ___

[issue42029] Remove dynload_dl.c

STINNER Victor added the comment: Poor IRIX platform :-( Not so long ago (2 years ago?), the bitesnake service provided IRIX machines! -- nosy: +vstinner ___ Python tracker _

[issue42014] shutil.rmtree calls onerror with different function than failed

Serhiy Storchaka added the comment: Added Hynek, the original committer of this code. -- nosy: +giampaolo.rodola, hynek, serhiy.storchaka, tarek versions: -Python 3.5, Python 3.6, Python 3.7 ___ Python tracker

[issue42032] Setting PYTHONPYCACHEPREFIX using ~ (tilde) creates a "~" folder

Veronica Olsen added the comment: Correction: The pycache is in fact redirected to the new '~' folder. In any case, I tested a bit on Debian Bullseye (Python 3.8.6) and Ubuntu 20.04 (Python 3.8.5) and it seems ~ is not expanded in the environment variable Debian. I'm a little uncertain what

[issue41993] Possible issues when remove not completely initialized module from sys.module

Serhiy Storchaka added the comment: New changeset 391a544f2a52673f6630c672e89840fd6ac36723 by Miss Skeleton (bot) in branch '3.9': bpo-41993: Fix possible issues in remove_module() (GH-22631) (GH-22647) https://github.com/python/cpython/commit/391a544f2a52673f6630c672e89840fd6ac36723 --

[issue42032] Setting PYTHONPYCACHEPREFIX using ~ (tilde) creates a "~" folder

New submission from Veronica Olsen : On Debian Bullseye (testing): Setting export PYTHONPYCACHEPREFIX=~/.pycache has previously worked. With Python 3.8.6, this still works in practice, when running python code (the pycache is still redirected), but during initialisation, the python3 executa

[issue42011] Documentation for logging.Filter.filter reports the wrong return type

Change by Necdet Can Atesman : -- keywords: +patch nosy: +soulmerge nosy_count: 3.0 -> 4.0 pull_requests: +21663 stage: -> patch review pull_request: https://github.com/python/cpython/pull/22692 ___ Python tracker

[issue38250] enum.Flag should be more set-like

Vedran Čačić added the comment: Flag values are _not_ a set of enabled bits. At least, it is a weird kind of set where a is the same as {a}. That's why I mentioned mereology... there is no reasonable "membership", just "inclusion". I understand that str is not a perfect analogy, but sets are