[issue32096] Py_DecodeLocale() fails if used before the runtime is initialized.

STINNER Victor added the comment: > As an alternative to that, we could also deprecate using any of those > functions before initializing the runtime. Instead of calling them, you > would set the relevant info on the runtime "config" struct that you pass to > the

[issue32111] ObjectListView crashes on python3.5

Change by Balakrishnan Unnithan : -- components: Extension Modules nosy: Balakrishnan Unnithan priority: normal severity: normal status: open title: ObjectListView crashes on python3.5 type: crash versions: Python 3.5 ___

[issue32110] Make codecs.StreamReader.read() more compatible with read() of other files

Serhiy Storchaka added the comment: > That's not true. .read(1) will at most read 1 byte from the stream > and decode it. There's no way it will return 70 characters. See the added tests. They are failed without changing the read() method. .read(1) currently

[issue32107] test_uuid uses the incorrect bitmask

STINNER Victor added the comment: > https://travis-ci.org/python/cpython/jobs/305433725 AssertionError: 219902322 is not false : 0242ac110051 AssertionError: 219902322 is not false : 0242ac110051 So the Travis CI MAC address is 02:42:ac:11:00:51. --

[issue32111] ObjectListView crashes on python3.5

Ronald Oussoren added the comment: This appears to be an issue with a 3th-party library (https://pypi.python.org/pypi/ObjectListView), not CPython itself. The repository (and issue tracker) for that library is at .

[issue27535] Ignored ResourceWarning warnings leak memory in warnings registries

Nick Coghlan added the comment: Touching the filesystem implicitly can have all sorts of unintentional side effects (especially in read-only environments), so we strongly prefer not to do that. The most general solution here would be to turn the warnings registry into an

[issue32033] The pwd module implementation incorrectly sets some attributes to None

Serhiy Storchaka added the comment: On your second link it is documented explicitly that pw_dir and pw_shell might be NULL. And at least for pw_shell the behavior for NULL and "" are different. -- ___ Python tracker

[issue32096] Py_DecodeLocale() fails if used before the runtime is initialized.

Nick Coghlan added the comment: Victor, please stop trying to conflate the two questions of "How should we fix the current Py_DecodeLocale regression before 3.7.0a3?" and "What do we want to do long term?". They're far from being the same question, and answering the

[issue32096] Py_DecodeLocale() fails if used before the runtime is initialized.

Nick Coghlan added the comment: Speaking of surprises with static initialization of the runtime allocations: both PRs are failing in CI, suggesting that the changes that Py_Initialize makes to the allocator settings aren't being reverted in Py_Finalize, so there's a

[issue32111] ObjectListView crashes on python3.5

New submission from Serhiy Storchaka : Could you provide more information Balakrishnan? -- nosy: +serhiy.storchaka status: open -> pending ___ Python tracker

[issue27535] Ignored ResourceWarning warnings leak memory in warnings registries

Serhiy Storchaka added the comment: I think it is common if filters don't depend on the warning test. In this case we can test and set the key (None, category, lineno) before (text, category, lineno). -- ___ Python

[issue32093] macOS: implement time.thread_time() using thread_info()

Ronald Oussoren added the comment: CLOCK_THREAD_CPUTIME_ID should be available on macOS 10.12 and later (which is also when clock_gettime was introduced). I'm not sure if it is worthwhile to implement this fairly specialised function for older macOS releases due to

Re: [issue32110] Make codecs.StreamReader.read() more compatible with read() of other files

On 22.11.2017 08:40, Serhiy Storchaka wrote: > Usually the read() method of a file-like object takes one optional argument > which limits the amount of data (the number of bytes or characters) returned > if specified. > > codecs.StreamReader.read() also has such parameter. But this is the

[issue32111] ObjectListView crashes on python3.5

Balakrishnan Unnithan added the comment: Issue: On Python3.5, ObjectListView object crashes when double-clicked in cell to edit int type. - Traceback (most recent call last): File

[issue32111] ObjectListView crashes on python3.5

Change by Christian Heimes : -- resolution: -> third party stage: -> resolved status: open -> closed ___ Python tracker ___

[issue32111] ObjectListView crashes on python3.5

Balakrishnan Unnithan added the comment: Yes, I am using this 3rd party library. Okay, I shall withdraw the issue from here. I'm new to Python and hence do not know the various groups and their purpose. Apologies! Thanks for the support. Version info: ObjectListView

[issue32033] The pwd module implementation incorrectly sets some attributes to None

Xavier de Gaye added the comment: Changing test_pwd does not correct the fact that the current implementation of the pwd module may break an existing Python application since this (old indeed) API states "The uid and gid items are integers, all others are strings". >

[issue32095] AIX: ModuleNotFoundError: No module named '_ctypes' - make install fails

Michael Felt added the comment: If I removed you from nosy - purely accidental - probably because you answered and I still had a dialog open with you not in it. My apologies in any case. I'll be more careful should something like that happen again. I am aware of the

[issue32030] PEP 432: Rewrite Py_Main()

STINNER Victor added the comment: New changeset e32e79f7d8216b78ac9e61bb1f2eee693108d4ee by Victor Stinner in branch 'master': bpo-32030: Move PYTHONPATH to _PyMainInterpreterConfig (#4511)

[issue32055] Reconsider comparison chaining for containment tests

Nick Coghlan added the comment: If we do decide to do this, I'm inclined to eventually make the change at the Grammar level rather than the AST level. Current: comparison: expr (comp_op expr)* comp_op: '<'|'>'|'=='|'>='|'<='|'<>'|'!='|'in'|'not' 'in'|'is'|'is'

[issue32030] PEP 432: Rewrite Py_Main()

STINNER Victor added the comment: Nick: Ok, I created PR 4511. -- ___ Python tracker ___

[issue32100] IDLE: PathBrowser isn't working

Terry J. Reedy added the comment: New changeset ae3c5c7b9e5e5ba53213e12cc100e32415d5762c by Terry Jan Reedy in branch '3.6': [3.6] bpo-32100: IDLE: Fix pathbrowser errors; improve tests. (GH-4484) (#4512)

[issue10544] yield expression inside generator expression does nothing

Change by Nick Coghlan : -- nosy: +ncoghlan ___ Python tracker ___ ___ Python-bugs-list

[issue32118] Docs: add note about sequence comparisons containing non-orderable elements

Change by Roundup Robot : -- keywords: +patch pull_requests: +4451 stage: -> patch review ___ Python tracker ___

[issue10049] Add a "no-op" (null) context manager to contextlib

Nick Coghlan added the comment: New changeset 0784a2e5b174d2dbf7b144d480559e650c5cf64c by Nick Coghlan (Jesse-Bakker) in branch 'master': bpo-10049: Add a "no-op" (null) context manager to contextlib (GH-4464)

[issue32117] Tuple unpacking in return and yield statements

Change by David Cuthbert : -- keywords: +patch pull_requests: +4446 stage: -> patch review ___ Python tracker ___

[issue32100] IDLE: PathBrowser isn't working

Terry J. Reedy added the comment: New changeset 20d48a44a54ed5e4a6df00e89ae27e3983128265 by Terry Jan Reedy (Cheryl Sabella) in branch 'master': bpo-32100: IDLE: Fix pathbrowser errors; improve tests. (#4484)

[issue32030] PEP 432: Rewrite Py_Main()

Change by STINNER Victor : -- pull_requests: +4448 ___ Python tracker ___ ___

[issue32096] Py_DecodeLocale() fails if used before the runtime is initialized.

Nick Coghlan added the comment: Even the public implementation of PEP 432 is going to bound by the requirement to keep existing embedding logic working, and that's encapsulated in the new test Eric added in his PR: wchar_t *program = Py_DecodeLocale("spam", NULL);

[issue32030] PEP 432: Rewrite Py_Main()

Nick Coghlan added the comment: Victor, *please* don't add the external import settings to CoreConfig. That struct should only contain the absolute bare minimum of settings needed to get an interpreter that *can't* access the filesystem, such that builtin modules and

[issue32109] Separated square brackets will generate a tuple instead of a list.

YCmove added the comment: Yes, what Cheryl Sabella says is what I was misled to. Took me a while to understand that ``[a]``, ``[a, b, c]`` is not ``[a], [a, b, c]``, how about replace comma to "or" for more clarity? just like it used in [tuple

[issue32030] PEP 432: Rewrite Py_Main()

STINNER Victor added the comment: New changeset d4341109746aa15e1909e63b30b93b6133ffe401 by Victor Stinner in branch 'master': bpo-32030: Add _PyCoreConfig.module_search_path_env (#4504)

[issue32096] Py_DecodeLocale() fails if used before the runtime is initialized.

Nick Coghlan added the comment: Victor, I think you're fundamentally misunderstanding the goals of PEP 432. The entire point is to let people have a *mostly working Python runtime* during CPython startup. Moving everything that Py_Initialize needs to instead have to

[issue32096] Py_DecodeLocale() fails if used before the runtime is initialized.

Nick Coghlan added the comment: Follow up: this also came up on https://bugs.python.org/issue32030#msg306763, and I think Victor and I are on the same page now :) Since MainInterpreterConfig is currently still a private struct, we can store the existing C level config

[issue32100] IDLE: PathBrowser isn't working

Terry J. Reedy added the comment: Thanks for catching and fixing this. -- resolution: -> fixed stage: patch review -> resolved status: open -> closed ___ Python tracker

[issue32118] Docs: add note about sequence comparisons containing non-orderable elements

Dubslow added the comment: The PR includes an unrelated one word grammar fix in the same file, that can be removed (by me or by someone else, IDC). This is possibly backportable but I wouldn't know, and leave such decisions for someone who do. -- type: ->

[issue27535] Ignored ResourceWarning warnings leak memory in warnings registries

STINNER Victor added the comment: New changeset 82656276caf4cb889193572d2d14dbc5f3d2bdff by Victor Stinner in branch 'master': bpo-27535: Optimize warnings.warn() (#4508) https://github.com/python/cpython/commit/82656276caf4cb889193572d2d14dbc5f3d2bdff --

[issue32030] PEP 432: Rewrite Py_Main()

Change by STINNER Victor : -- pull_requests: +4450 ___ Python tracker ___ ___

[issue32117] Tuple unpacking in return and yield statements

New submission from David Cuthbert : This stems from a query on StackOverflow: https://stackoverflow.com/questions/47272460/python-tuple-unpacking-in-return-statement/ Specifically, the following syntax is allowed: def f(): rest = (4, 5, 6) t = 1, 2, 3, *rest While

[issue32114] The get_event_loop change in bpo28613 did not update the documentation

Change by Pablo Galindo Salgado : -- keywords: +patch pull_requests: +4447 stage: needs patch -> patch review ___ Python tracker

[issue32030] PEP 432: Rewrite Py_Main()

Nick Coghlan added the comment: Nice, thanks for that. Good call on keeping the current data types for now, so we can focus on consolidating the configuration settings first, and then look at upgrading from C level types to Python level types later. --

[issue32100] IDLE: PathBrowser isn't working

Change by Terry J. Reedy : -- pull_requests: +4449 ___ Python tracker ___ ___

[issue27535] Ignored ResourceWarning warnings leak memory in warnings registries

STINNER Victor added the comment: My PR 4502 implements all optimizations, but also converts warnings.filters to a tuple, to detect when detect attempts to modify directly warnings.filters, rather than using function calls. Problem: test.libregrtest module uses a

[issue32118] Docs: add note about sequence comparisons containing non-orderable elements

New submission from Dubslow : In sequence comparisons, the enforcement of reflexivity of elements means that only non-identical elements are actually compared. The docs then note, with example, that non-reflexive elements thus always "compare" equal inside the sequence.

[issue32112] Should uuid.UUID() accept another UUID() instance?

New submission from Martijn Pieters : When someone accidentally passes in an existing uuid.UUID() instance into uuid.UUID(), an attribute error is thrown because it is not a hex string: >>> import uuid >>> value = uuid.uuid4() >>> uuid.UUID(value) Traceback (most recent call

[issue27535] Ignored ResourceWarning warnings leak memory in warnings registries

STINNER Victor added the comment: The performance bottleneck of warnings.warn() is the dance between the C _warnings module and the Python warnings module. The C code retrieves many attributes, like warnings.filters, at each call, and does conversion from Python

[issue32109] Separated square brackets will generate a tuple instead of a list.

Berker Peksag added the comment: That's why I mentioned ``[a], [a, b, c]`` in my earlier message. -- ___ Python tracker ___

[issue31841] Several methods of collections.UserString do not return instances of UserString or its subclasses

Dmitry Kazakov added the comment: I added a PR. FWIW, I still think it would make sense to change the return type of UserString.join, and maybe *split* and *partition methods (to return list/tuple of UserString objects) for the sake of consistency. --

[issue27535] Ignored ResourceWarning warnings leak memory in warnings registries

STINNER Victor added the comment: > $ ./python -m perf compare_to ref.json patch.json > Mean +- std dev: [ref] 903 ns +- 70 ns -> [patch] 1.06 us +- 0.06 us: 1.17x > slower (+17%) We are talking about a difference of 157 nanoseconds. On the same laptop, a Python

[issue32109] Separated square brackets will generate a tuple instead of a list.

Cheryl Sabella added the comment: Perhaps this is what the YCMove meant? >>> a = [1], [2, 3, 4] >>> a ([1], [2, 3, 4]) >>> -- nosy: +csabella ___ Python tracker

[issue32112] Should uuid.UUID() accept another UUID() instance?

Antti Haapala added the comment: I've been hit by this too, in similar contexts, and several times. It is really annoying that it is easier to coerce an UUID or UUID-string to a string than to coerce to a UUID. Usually when the copy semantics are clear and the class is

[issue27535] Ignored ResourceWarning warnings leak memory in warnings registries

STINNER Victor added the comment: I implemented a cache for warnings.filters in C. With my WIP patch which doesn't touch the registry for the ignore action, warnings.warn() is now faster than the current code ;-) haypo@selma$ ./python -m perf compare_to ref.json

[issue31841] Several methods of collections.UserString do not return instances of UserString or its subclasses

Change by Dmitry Kazakov : -- keywords: +patch pull_requests: +4438 stage: -> patch review ___ Python tracker ___

[issue32109] Separated square brackets will generate a tuple instead of a list.

R. David Murray added the comment: Yes, the markup (and therefore how the code is displayed in the docs) clearly indicates that the , between the lists is not part of the python syntax being discussed. -- nosy: +r.david.murray

[issue32112] Should uuid.UUID() accept another UUID() instance?

Serhiy Storchaka added the comment: Not always the constructor accept an instance of the same class. I'm sure that this is not true in the majority of cases. The constructor of int accepts an instance of int and the constructor of tuple accepts an instance of

[issue5710] ctypes should return composite types from callbacks

Pam McA'Nulty added the comment: In the example code, the 'result' variable is declared on the stack in the callback() function. So it will be effectively when callback() returns. Also the "result" variable in main() is never referenced. A pointer main()'s "result"

[issue32033] The pwd module implementation incorrectly sets some attributes to None

STINNER Victor added the comment: > And at least for pw_shell the behavior for NULL and "" are different. What is the difference between the two? -- ___ Python tracker

[issue31299] Add "ignore_modules" option to TracebackException.format()

Pablo Galindo Salgado added the comment: I have prepared a patch (attached) with a possible implementation of the C function that can filter traceback objects modifying the traceback chain. I can make a PR if the patch looks good enough to start iterating over it. In case

[issue32096] Py_DecodeLocale() fails if used before the runtime is initialized.

Nick Coghlan added the comment: Also, the basic rules of thumb I use for deciding whether or not a setting belongs in CoreConfig: * does `PyUnicode_New` need this? (If yes, then include it) * does the importlib bootstrapping need this? (If yes, then include it) Everything

[issue10049] Add a "no-op" (null) context manager to contextlib

Nick Coghlan added the comment: Thanks to Jesse Bakker for the PR implementing this for 3.7! -- resolution: -> fixed stage: patch review -> resolved status: open -> closed versions: +Python 3.7 ___ Python tracker

[issue32096] Py_DecodeLocale() fails if used before the runtime is initialized.

STINNER Victor added the comment: "Victor, I think you're fundamentally misunderstanding the goals of PEP 432. The entire point is to let people have a *mostly working Python runtime* during CPython startup. (...)" While the PEP 432 is nice, all changes are

[issue5710] ctypes should return composite types from callbacks

Russell Keith-Magee added the comment: For those interested, we developed a workaround for this in Rubicon: https://github.com/pybee/rubicon-objc/pull/85/files The fix involves using ctypes to access ctypes own internals, and build a modified version of the Structure

[issue32117] Tuple unpacking in return and yield statements

Change by Serhiy Storchaka : -- versions: +Python 3.7 -Python 3.4, Python 3.5, Python 3.6 ___ Python tracker ___

[issue32117] Tuple unpacking in return and yield statements

Serhiy Storchaka added the comment: Since this changes the grammar, it should be first discussed on Python-Dev and approved by BDFL. -- nosy: +serhiy.storchaka ___ Python tracker

[issue30230] Move quick test in PyObject_IsSubClass outside of PyType_CheckExact guard

Serhiy Storchaka added the comment: Yes, please move this to Python-Dev. -- ___ Python tracker ___

[issue10544] yield expression inside generator expression does nothing

Nick Coghlan added the comment: "Just fix the issue" is easier said than done for the same reason that comprehensions were implemented the way they are now: lambda expressions still have to work. That is, we need to maintain the invariant that: [x for x in iterable]

[issue30811] A venv created and activated from within a virtualenv uses the outer virtualenv's site-packages rather than its own.

Vinay Sajip added the comment: > I guess it's reasonable, I'll see whether we can use the workaround you > proposed. OK, please post your findings here. > (Could a fix on virtualenv's side help?) Probably not, as it's not behaving unexpectedly. It might be worth

[issue32055] Reconsider comparison chaining for containment tests

Serhiy Storchaka added the comment: PR 4501 makes the parser emitting a SyntaxWarning for chained `in` and `not in` comparison operators. In future it can be turned into a SyntaxError. But this should be first discussed on Python-Dev. --

[issue32113] Strange behavior with await in a generator expression

New submission from Ivan Levkivskyi : PEP 530 is not very clear about `await` in generator expressions. But when I try it, the error is a bit confusing: >>> async def g(i): ... print(i) ... >>> async def f(): ... result = list(await g(i) for i in range(3)) ...

[issue5710] ctypes should return composite types from callbacks

Pam McA'Nulty added the comment: oops - "In the example code, the 'result' variable is declared on the stack in the callback() function. So it will be effectively when callback() returns." should be "In the example code, the 'result' variable is declared on the stack

[issue32055] Reconsider comparison chaining for containment tests

Change by Serhiy Storchaka : -- keywords: +patch pull_requests: +4439 stage: -> patch review ___ Python tracker ___

[issue10544] yield expression inside generator expression does nothing

Change by Serhiy Storchaka : -- nosy: +serhiy.storchaka versions: +Python 3.6, Python 3.7 -Python 3.5 ___ Python tracker

[issue32113] Strange behavior with await in a generator expression

Yury Selivanov added the comment: > ... result = list(await g(i) for i in range(3)) This is equivalent to this code: async def ait(): for i in range(3): v = await g(i) yield v result = list(ait()) Where 'ait' is an async generator

[issue32113] Strange behavior with await in a generator expression

Ivan Levkivskyi added the comment: A first simple idea that comes to my mind is special-case async generators/iterators in PyObject_GetIter to say something like: TypeError: asynchronous iterable can't be used where an iterable is expected If it is possible to detect

[issue28684] [asyncio] bind() on a unix socket raises PermissionError on Android for a non-root user

Change by Xavier de Gaye : -- pull_requests: +4441 ___ Python tracker ___ ___

[issue32096] Py_DecodeLocale() fails if used before the runtime is initialized.

STINNER Victor added the comment: > We *don't* currently have anything like that for environment variables, not > even the ones which are "read once at startup, then never read them again". I changed Py_Main() in bpo-32030. Now multiple environment variables are

[issue32022] Python crashes with mutually recursive code

STINNER Victor added the comment: I close the issue for the reasons given in the latest comments. Sorry! -- resolution: -> fixed stage: test needed -> resolved status: open -> closed ___ Python tracker

[issue32022] Python crashes with mutually recursive code

STINNER Victor added the comment: (Oops, must be closed as "wont fix".) -- resolution: fixed -> wont fix ___ Python tracker

[issue32022] Python crashes with mutually recursive code

Mark Dickinson added the comment: I was going to suggest that this might be a documentation issue, but the existing documentation already looks sufficient to me: > A user may need to set the limit higher when they have a program that > requires deep recursion and a

[issue32022] Python crashes with mutually recursive code

Mark Dickinson added the comment: > I suggest to close it as WONTFIX. Agreed. If you use sys.setrecursionlimit, you're deliberately bypassing Python's safety mechanisms. A crash due to stack overflow shouldn't be considered a bug under these circumstances. --

[issue32030] PEP 432: Rewrite Py_Main()

Change by STINNER Victor : -- pull_requests: +4442 ___ Python tracker ___ ___

[issue27535] Ignored ResourceWarning warnings leak memory in warnings registries

Change by STINNER Victor : -- pull_requests: +4440 ___ Python tracker ___ ___

[issue32096] Py_DecodeLocale() fails if used before the runtime is initialized.

STINNER Victor added the comment: I created a new PR adding a a new _PyCoreConfig.pythonpath field: https://github.com/python/cpython/pull/4504 Once it will be merged, I will work on a new PR for PYTHONHOME (add a new _PyCoreConfig.pythonhome field). --

[issue31324] support._match_test() used by test.bisect is very inefficient

STINNER Victor added the comment: Oops, the commit 803ddd8ce22f0de3ab42fb98a225a704c000ef06 broke the GCC job on Travis CI: --- Run tests sequentially 0:00:00 load avg: 48.91 [ 1/404] test_grammar 0:00:00 load avg: 48.91 [ 2/404] test_opcodes 0:00:00 load avg:

[issue32116] CSV import and export simplified

New submission from Paul Long : It would be helpful if the CSV module included standard functions that simplify the import of CSV files to a list and the export of CSV files to a list. Here's an example of what they could be: def csv2list(file_name): list_name=[]

[issue32114] The get_event_loop change in bpo28613 did not update the documentation

New submission from R. David Murray : No changes were made to the documentation of get_event_loop when its behavior was modified to return the loop running the future/coroutine when called from that context. The documentation still says it gets the loop associated with

[issue31324] support._match_test() used by test.bisect is very inefficient

Change by STINNER Victor : -- pull_requests: +4443 ___ Python tracker ___ ___

[issue32115] Ignored SIGCHLD causes asyncio.Process.wait to hang forever

New submission from rogpeppe : If some parent process has disabled SIGCHLD, that signal is inherited and stops that signal being delivered, which means that asyncio.Process.wait will never complete. As an example, the plan9port terminal window, 9term,

[issue32116] CSV import and export simplified

R. David Murray added the comment: Thanks for the suggestion, but I'm -0.5. I don't think these are compelling enough to be worth adding to the module API. The number of times I've done this kind of operation is far smaller than the number of times I've had other

[issue32116] CSV import and export simplified

Paul Long added the comment: I should have added that there are thousands of 15 year old students completing GCSE Computer Science who would benefit massively from this. All the exam boards in England require students to be able to read from and write to CSV files. The

[issue32100] IDLE: PathBrowser isn't working

Terry J. Reedy added the comment: The reason double-clicking got worse from 3.6.3 to now is this. Previously, browser.ModuleBrowserTreeItem.OnDoubleClick ignored the file_open global (set to pyshell.flist.open in .__init__) and called pyshell.flist.open. The Class and

[issue27535] Ignored ResourceWarning warnings leak memory in warnings registries

STINNER Victor added the comment: I published my WIP work on optimizing warnings: PR 4502, it's based on PR 4489. The code should be cleaned up, especially the "_PyRuntime" part. The default action caching should be fixed. --

[issue19610] Give clear error messages for invalid types used for setup.py params (e.g. tuple for classifiers)

Henk-Jaap Wagenaar added the comment: This is still present, and also silently affects Python 2.7 as evidenced here: https://github.com/pypa/setuptools/issues/1163 I am happy to adapt Berker Peksags patch to a PR, if he is? -- nosy: +Henk-Jaap Wagenaar

[issue19610] Give clear error messages for invalid types used for setup.py params (e.g. tuple for classifiers)

Éric Araujo added the comment: Latest patch seems good. Berker, would you have the time to adapt for 3.7 and submit as a PR? -- ___ Python tracker

[issue28009] core logic of uuid.getnode() is broken for AIX - all versions

Michael Felt added the comment: x064 is AIX 5.3, x071 is AIX 6.1, x072 is AIX 7.1 - in the following output On 11/20/2017 9:01 PM, Serhiy Storchaka wrote: > Serhiy Storchaka added the comment: > > What return commands `ifconfig`, `ifconfig

[issue31324] support._match_test() used by test.bisect is very inefficient

STINNER Victor added the comment: New changeset bb11c3c967afaf263e00844d4ab461b7fafd6d36 by Victor Stinner in branch 'master': bpo-31324: Fix test.support.set_match_tests(None) (#4505) https://github.com/python/cpython/commit/bb11c3c967afaf263e00844d4ab461b7fafd6d36

[issue10544] yield expression inside generator expression does nothing

Change by Ivan Levkivskyi : -- assignee: levkivskyi -> ___ Python tracker ___ ___

[issue32116] CSV import and export simplified

R. David Murray added the comment: Um. If they aren't expected to understand how to write this code, why isn't it being provided to them as a canned function as part of the test environment? To succeed in getting something like this added, I suspect you will need to

[issue32022] Python crashes with mutually recursive code

Terry J. Reedy added the comment: I confirmed that increasing the recursion limit can change recursion behavior on Windows. >>> def f(): g() ... >>> def g(): f() ... >>> f() With the default limit or 1000 or increase to 3000, I get a recursion error. With the limit set to

[issue32116] CSV import and export simplified

Paul Long added the comment: Thanks for your advice. The reason it's not provided as a canned function is because different schools can use different programming languages, although the vast majority choose to use Python. --

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