SylvainDe added the comment:
As this is likely not to get solved, is there a recommanded way to work around
this issue ?
Here's what I have done :
import argparse
def main():
Main function
parser = argparse.ArgumentParser()
parser.add_argument('--foo', action='append
New submission from SylvainDe:
From :
https://docs.python.org/2/tutorial/datastructures.html and
https://docs.python.org/3.4/tutorial/datastructures.html (and all other
versions) :
list.index(x)
Return the index in the list of the first item whose
New submission from SylvainDe:
Disclaimer: This is very minor, impacts only Python 2 and is maybe not even a
bug.
Context: I was randomly changing attribute of Exception objects when I
discovered something I did not expect : sometimes when an exception occurs, a
new object is raised (which
New submission from SylvainDe:
Very uninteresting issue but error message should probably be "first argument
must BE a type object" in `array__array_reconstructor_impl` in
Modules/arraymodule.c .
This has been introduced with ad077154d0f305ee0ba5bf41d3cb47d1d9c43e7b .
I'll handle
Changes by SylvainDe <sylvain.des...@gmail.com>:
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New submission from SylvainDe:
Very uninteresting issue I've found while looking at the code.
In Objects/call.c, in _PyMethodDef_RawFastCallDict(PyMethodDef *method,
PyObject *self, PyObject **arg...), we have
no_keyword_error:
PyErr_Format(PyExc_TypeError
SylvainDe added the comment:
I forgot to copy the link but here is a description of what I had in mind for
the first idea.
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SylvainDe added the comment:
http://julio.meroh.net/2011/06/validating-format-strings-in-custom-c.html
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SylvainDe added the comment:
Seems to be introduced via 250e4b0063fab35770719b64d1e36209c4aa2596 in January
this year.
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SylvainDe added the comment:
I have a fix ready but I'll look if other functions using _PyArg_NoKeywords may
have the same defect before submitting it.
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SylvainDe added the comment:
Thanks Serhiy Storchaka !
This issue seems to affect (all) other Python versions. Should we proceed to a
cherry-pick ?
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SylvainDe added the comment:
Regarding the `sorted.__doc__` issue, it seems like the signature does not
appear in the `__doc__` member but it does appear when using `help(sorted)`
which is probably what really matters.
In any case, I find PEP 257 about this part a bit ambiguous : "Th
SylvainDe added the comment:
@swapnil agarwal I think you can go for it.
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SylvainDe added the comment:
As I was trying to test coverage for a few places where the same error was
built, I have discovered another issue where the error message is very
misleading:
AssertionError: "^index\(\) takes no keyword arguments$" does not match
"index() t
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_
SylvainDe added the comment:
Could it be caused by alignment ?
Also, it could be interesting to explain a bit more what you expect and what
you actually get.
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New submission from SylvainDe:
Very recent "regression". Issue found because of a pet project trying to parse
error messages using regexps : more on
https://github.com/SylvainDe/DidYouMean-Python/issues/31 .
On recent Cron builds on Jenkins, running the following code
SylvainDe added the comment:
Reproduced locally using unit tests:
+def test_varargs0_kw(self):
+msg = r"bool\(\) takes no keyword arguments"
+self.assertRaisesRegex(TypeError, msg, bool, x=2)
+
giving:
Traceback (most recent call last):
File "/hom
SylvainDe added the comment:
The issue seems to be in:
int
_PyArg_NoKeywords(const char *funcname, PyObject *kwargs)
I'm happy to submit a PR if needed.
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SylvainDe added the comment:
Hi serhiy.storchaka, this is fine by me! I've added a corresponding comment
with questions/suggestions on the Github PR.
Do you reckon I should open another ticket for the issue mentionned in my
previous message ? I'm happy to take care
SylvainDe added the comment:
Can I give this a try or is anyone working on this already ?
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New submission from SylvainDe:
Issue found while trying to write tests for https://bugs.python.org/issue30592
.
Issue related to http://bugs.python.org/issue30534 .
The following code:
[].index(x=2)
should raise the following error:
TypeError: index() takes no keyword arguments
SylvainDe added the comment:
Thanks Serhiy Storchaka for the tip! I am currently investigating how the
argument clinic works. I have used git bisect to find when the issue got
introduced.
commit fdd42c481edba4261f861fc1dfe24bbd79b5a17a
bpo-20185: Convert list object implementation to Argument
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SylvainDe added the comment:
IMHO, the sentence is not bad as it is. An easy (?) yet efficient way to make
it much better from the a user perspective would be to make the "regular
expression object" text a link leading to
https://docs.python.org/3/library/re.html#regular-expressi
SylvainDe added the comment:
(Also, I suspect introspection could be used to know if the same bug is still
lying somewhere: get all objects (using gc?), keep callables with no __code__
member only, call with keyword argument, check error
New submission from SylvainDe:
Follow-up for http://bugs.python.org/issue30600 which is itself a follow-up for
http://bugs.python.org/issue30534 . Not quite sure what the process is in that
situation : creating a new ticket or updating the old one ?
After working on http://bugs.python.org
SylvainDe added the comment:
Alexandru: You'll find the PSF Contributor Agreement at
https://www.python.org/psf/contrib/contrib-form/ .
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SylvainDe added the comment:
This is mostly true and I agree that error messages are not part of the API.
However, I'd like to add the following points:
- the error message was more meaningful before
- the fact that having system.settrace used or not changes the behaviour makes
me think
Change by SylvainDe :
--
type: -> behavior
versions: +Python 3.7, Python 3.8
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SylvainDe added the comment:
This looks good to me :)
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SylvainDe added the comment:
Thanks for the investigation. I'm fine with the explanation provided.
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New submission from SylvainDe :
Context:
Follow-up from https://bugs.python.org/issue35965 which was closed when we
assumed the issue was on the coverage side.
After nedbat investigation, it seems like the issue comes from call to
"sys.settrace".
Issue:
--
A te
SylvainDe added the comment:
I have no explanation whatsoever but removing the call to coverage seems to
remove the issue:
https://travis-ci.org/SylvainDe/DidYouMean-Python/builds/491727724 .
I guess we can close this issue - sorry for the inconvenience.
@nedbat: do you want me to open
New submission from SylvainDe :
On some Python versions, the following pieces of code have a different behavior
which is not something I'd expect:
```
DESCRIPT_REQUIRES_TYPE_RE = r"descriptor '\w+' requires a 'set' object but
received a 'int'"
...
def test_assertR
SylvainDe added the comment:
That's the very weird thing. I've been unable to reproduce this locally but it
can be seen on Travis runs.
Here are the results so far (Versions numbers are retrieved with python -VV and
python -c "import sys; print(sys._git)"):
On some versions,
SylvainDe added the comment:
This is a brilliant idea! I'll give it a try and keep you posted.
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SylvainDe added the comment:
For similar reasons as friendly-traceback, I'd be interested in a list of
stdlib modules to be able to provide additional information in case of
exceptions.
For instance:
string.ascii_lowercase
> Before: NameError("name 'string' is not defined&qu
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