date:20190823



Raymond Hettinger  added the comment:

Removed the bogus test -- it was a cut-and-paste error from a scratch file.

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[issue19119] duplicate test name in Lib/test/test_heapq.py



Raymond Hettinger  added the comment:


New changeset ef3ccd737020a0bb49ea0bfe48069f89bb5370a1 by Raymond Hettinger 
(Miss Islington (bot)) in branch '3.8':
bpo-19119: Remove invalid test and rename a misnamed test (GH-15442) (GH-15447)
https://github.com/python/cpython/commit/ef3ccd737020a0bb49ea0bfe48069f89bb5370a1


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[issue19119] duplicate test name in Lib/test/test_heapq.py



Change by miss-islington :


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[issue19119] duplicate test name in Lib/test/test_heapq.py



Raymond Hettinger  added the comment:


New changeset 4101181fd87c2fab6456663d3c8cc99377cf0463 by Raymond Hettinger in 
branch 'master':
bpo-19119: Remove invalid test and rename a misnamed test (GH-15442)
https://github.com/python/cpython/commit/4101181fd87c2fab6456663d3c8cc99377cf0463


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[issue37461] email.parser.Parser hang

2019-08-23 Thread Abhilash Raj



Abhilash Raj  added the comment:

I manually created a backport PR for 3.5 and added Larry as a reviewer.

https://github.com/python/cpython/pull/15446

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[issue37461] email.parser.Parser hang

2019-08-23 Thread Abhilash Raj



Change by Abhilash Raj :


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[issue14010] deeply nested itertools objects segfault



Raymond Hettinger  added the comment:

[Armin]
> It's just one of many places where CPython does a recursion 
> without checking the recursion depth.  CPython still works, 
> based on the resonable assumption that doing such a recursion
> here is obscure.

I agree with that assessment and am going to close this as something we can 
live with (or least have lived with successfully for a long time).  AFAICT, 
this situation doesn't arise in practical code.

It is possible to slow down the language by adding a variant of recursion 
checks to every call to an iterator.  But this just makes the language pay a 
code complexity cost and performance cost for something that doesn't really 
affect real users.  People typically choose itertools for their speed 
(otherwise, plain generators can be clearer).  We shouldn't work against the 
needs of those users.

A robust, clean, and performant solution wouldn't be easy but would likely 
involve some general purpose stack overflow protection that periodically makes 
sure there is enough stack remaining for C Python to function correctly.

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[issue37461] email.parser.Parser hang



Ned Deily  added the comment:

xtreak, would you be willing to make the PR for 3.5?  That will make it easier 
for Larry to decide whether to include it in a 3.5 security release.

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[issue37461] email.parser.Parser hang



Ned Deily  added the comment:


New changeset f1f9c0c532089824791cfc18e6d6f29e1cd62596 by Ned Deily 
(GeeTransit) in branch '3.6':
[3.6] bpo-37461: Fix typo (inifite -> infinite) (#15432)
https://github.com/python/cpython/commit/f1f9c0c532089824791cfc18e6d6f29e1cd62596


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[issue37461] email.parser.Parser hang

2019-08-23 Thread George Zhang



Change by George Zhang :


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[issue37461] email.parser.Parser hang



Ned Deily  added the comment:


New changeset 799e4e527019d9429fdef12d08a0c03b08a1fb59 by Ned Deily 
(GeeTransit) in branch '3.7':
[3.7] bpo-37461: Fix typo (inifite -> infinite) (GH-15430)
https://github.com/python/cpython/commit/799e4e527019d9429fdef12d08a0c03b08a1fb59


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[issue37461] email.parser.Parser hang

2019-08-23 Thread George Zhang



Change by George Zhang :


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[issue19119] duplicate test name in Lib/test/test_heapq.py



Change by Raymond Hettinger :


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[issue35235] Access violation on alloc in Windows x86-64 python, pymalloc_alloc

2019-08-23 Thread Victor Milovanov



Victor Milovanov  added the comment:

In my case it always happens in pymalloc_alloc when size == 5, e.g. when 
accessing usedpools[10].
Specifically freeblock pointer in usedpools[10] is wy off (essentially, 
seemingly random number looking like 0xX000) where it is supposed to be 
(e.g. very far from usedpools[10]). Surprisingly, all the other fields in 
usedpool[10] seem to have normal values.

I could not find any place in obmalloc.c where this value would be set, so it 
seems to be a memory corruption caused by something else.

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[issue35235] Access violation on alloc in Windows x86-64 python, pymalloc_alloc

2019-08-23 Thread Victor Milovanov



Victor Milovanov  added the comment:

This reproduces stably for me when running unit tests in Python.NET project at 
commit 5e276d9.

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[issue35998] test_asyncio: test_start_tls_server_1() TimeoutError on Fedora 29

2019-08-23 Thread Open Close



Open Close  added the comment:

For me, since GH-14080, It's been fixed. (arch linux)

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[issue34259] Improve docstring of list.sort



Change by Raymond Hettinger :


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[issue17794] Add a key parameter to PriorityQueue



Raymond Hettinger  added the comment:

Starting in Python 3.7, dataclasses made it trivially easy to work around this 
issue.  The PriorityQueue docs have a worked out example of how to do this: 
https://docs.python.org/3/library/queue.html#queue.PriorityQueue

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[issue9985] difflib.SequenceMatcher has slightly buggy and undocumented caching behavior



Raymond Hettinger  added the comment:

This was fixed for Python 2.7 and Python 3.4 and later.

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[issue37798] Add C fastpath for statistics.NormalDist.inv_cdf()

2019-08-23 Thread Dong-hee Na



Dong-hee Na  added the comment:

> There's one more step.  Can you please amend to the tests to run both the
> pure python and C versions.

Sure, I will take look at it!

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[issue37798] Add C fastpath for statistics.NormalDist.inv_cdf()



Change by Raymond Hettinger :


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[issue37798] Add C fastpath for statistics.NormalDist.inv_cdf()



Raymond Hettinger  added the comment:

Thanks for doing the work one this.  Nice work :-)

There's one more step.  Can you please amend to the tests to run both the pure 
python and C versions.  See Lib/test/test_heapq.py for an example of how to 
this.

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[issue37798] Add C fastpath for statistics.NormalDist.inv_cdf()



Raymond Hettinger  added the comment:


New changeset 5779c536321e1405b4c17654a85b8f9221be765e by Raymond Hettinger 
(Miss Islington (bot)) in branch '3.8':
bpo-37798: Add C fastpath for statistics.NormalDist.inv_cdf() (GH-15266) 
(GH-15441)
https://github.com/python/cpython/commit/5779c536321e1405b4c17654a85b8f9221be765e


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[issue37798] Add C fastpath for statistics.NormalDist.inv_cdf()



Raymond Hettinger  added the comment:


New changeset 0a18ee4be7ba215f414bef04598e0849504f9f1e by Raymond Hettinger 
(Dong-hee Na) in branch 'master':
bpo-37798: Add C fastpath for statistics.NormalDist.inv_cdf() (GH-15266)
https://github.com/python/cpython/commit/0a18ee4be7ba215f414bef04598e0849504f9f1e


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[issue37798] Add C fastpath for statistics.NormalDist.inv_cdf()



Change by miss-islington :


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[issue18078] threading.Condition to allow notify on a specific waiter



Raymond Hettinger  added the comment:

Marking this as closed/rejected for the reasons listed above.

Thank you all for the thoughtful and intelligent discussion.

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[issue29352] provide the authorative source for s[i:j] negative slice indices (<-len(s)) behavior for standard sequences



Change by Raymond Hettinger :


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[issue22001] containers "same" does not always mean "eq".



Change by Raymond Hettinger :


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[issue37933] faulthandler causes segfaults

2019-08-23 Thread Thomas Caswell



Change by Thomas Caswell :


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pull_request: https://github.com/python/cpython/pull/15440

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[issue37934] Docs: Clarify NotImplemented use cases

2019-08-23 Thread Kyle Stanley



New submission from Kyle Stanley :

In the documentation for the NotImplemented constant 
(https://docs.python.org/3/library/constants.html#NotImplemented), the only use 
case mentioned is for binary special methods, (such as object.__eq__(other)). 
However, based on a conversation in a recent PR 
(https://github.com/python/cpython/pull/15327#discussion_r316561140), there 
seems be several other use cases as well.  It's quite useful to utilize when 
it's desired to express that a particular operation is not supported, without 
raising an error.

Expanding upon the use cases will provide readers an idea of other cases in 
which the constant could be useful. Also, the current wording could potentially 
come across as implying that the _only_ use case for the constant is for binary 
special methods, and as far as I'm aware, that is not the case.

--
assignee: docs@python
components: Documentation
keywords: easy
messages: 350333
nosy: aeros167, docs@python, eric.araujo, ezio.melotti, mdk, willingc
priority: normal
severity: normal
stage: needs patch
status: open
title: Docs: Clarify NotImplemented use cases
type: enhancement
versions: Python 3.9

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[issue37585] Comparing PyDictValues does not give expected results

2019-08-23 Thread Kyle Stanley



Change by Kyle Stanley :


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[issue37933] faulthandler causes segfaults

2019-08-23 Thread Thomas Caswell



Change by Thomas Caswell :


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[issue37933] faulthandler causes segfaults

2019-08-23 Thread Thomas Caswell



New submission from Thomas Caswell :

Changing faulthandler to only allocate it's stack when use causes python to 
segfault with

import faulthandler
faulthandler.cancel_dump_traceback_later()

https://bugs.python.org/issue37851 https://github.com/python/cpython/pull/15358

--
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messages: 350332
nosy: tcaswell, vstinner
priority: normal
severity: normal
status: open
title: faulthandler causes segfaults
type: crash
versions: Python 3.9

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[issue37932] ConfigParser.items(section) with allow_no_value returns empty strings

2019-08-23 Thread Sean Robertson



New submission from Sean Robertson :

Hello and thanks for reading.

I've also experienced this in Python 3.7, and I believe it to be around since 
3.2.

The allow_no_value option of ConfigParser allows None values when 
(de)serializing configuration files. Yet calling the "items(section)" method of 
a ConfigParser returns empty strings for values instead of None. See below for 
an MRE.

Thanks,
Sean

Python 3.6.8 (default, Jan 14 2019, 11:02:34)
[GCC 8.0.1 20180414 (experimental) [trunk revision 259383]] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from configparser import ConfigParser
>>> a = ConfigParser(allow_no_value=True)
>>> a.add_section('foo')
>>> a.set('foo', 'bar')
>>> a.items('foo')
[('bar', '')]
>>> a.items('foo', raw=True)
[('bar', None)]
>>> a.get('foo', 'bar')
>>> list(a['foo'].items())
[('bar', None)]

--
components: Library (Lib)
messages: 350331
nosy: Sean Robertson
priority: normal
severity: normal
status: open
title: ConfigParser.items(section) with allow_no_value returns empty strings
type: behavior
versions: Python 3.6

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[issue37884] Optimize Fraction() and statistics.mean()

2019-08-23 Thread Jeroen Demeyer



Jeroen Demeyer  added the comment:

> FWIW, the entire point of us having recently added as_integer_ratio() methods 
> to so many concrete classes is to avoid the need for helper functions in 
> favor of a simple try/except around a single call.

But what about PEP 3141? The fractions.Fraction constructor accepts 
numbers.Rational instances, which do not necessarily have an as_integer_ratio() 
method. We can't just drop support for that (*). So in practice you do need to 
check both as_integer_ratio() and the PEP 3141 numerator/denominator 
properties. It seems useful to have a helper function for this.

(*) Unless you want to deprecate PEP 3141. This may be less crazy than it 
sounds, especially given Guido van Rossum's reaction on 
https://discuss.python.org/t/pep-3141-ratio-instead-of-numerator-denominator/2037/25?u=jdemeyer

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[issue37531] Fix regrtest timeout for subprocesses: regrtest -jN --timeout=SECONDS

2019-08-23 Thread Eryk Sun



Eryk Sun  added the comment:

Alternatively, instead of special casing the file type and spinning on 
PeekNamedPipe, the workaround could be based on a multiple-object wait that 
includes the child process handle. In this case, communicate() would always 
call _communicate in Windows, regardless of the timeout or number of pipes -- 
because simplistically calling either self.stdout.read() or self.stderr.read() 
could hang. 

The implementation would be moderately complicated. If we stop waiting on the 
reader threads because the process exited, we can give the threads a short time 
to finish reading and close the files -- maybe 250 ms is enough. But if they 
haven't exited at this time, we can't simply raise a TimeoutExpired exception 
if the call hasn't actually timed out.  To finish the _communicate call, we 
would have to cancel the pending reads and join() the threads.

We can force a reader thread to exit by canceling the read via WINAPI 
CancelIoEx. However, _readerthread has to be modified to support this. It could 
be implemented as a loop that calls _winapi.ReadFile to read the output in 
chunks that get appended to the buffer list. The read loop would break for 
either ERROR_BROKEN_PIPE or ERROR_OPERATION_ABORTED (canceled). 

The final step in _communicate would be to concatenate the partial reads. If 
it's text mode, it would also have to decode the bytes and translate newlines. 
The POSIX implementation of _communicate has to do this, so we already have a 
_translate_newlines method for this case.

Note that _winapi.WaitForMultipleObjects is interruptible in the main thread 
via Ctrl+C, which is a bonus improvement since Thread.join() can't be 
interrupted in Windows.

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[issue36763] Implementation of the PEP 587



STINNER Victor  added the comment:


New changeset af84a88ef8b3288da528d2f52b7d3fbafb8dc8a6 by Victor Stinner in 
branch '3.8':
bpo-36763: PyConfig_Read() handles PySys_AddXOption() (GH-15431) (GH-15435)
https://github.com/python/cpython/commit/af84a88ef8b3288da528d2f52b7d3fbafb8dc8a6


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[issue37549] os.dup() fails for standard streams on Windows 7



miss-islington  added the comment:


New changeset 3921d12174c1998d9df7a08d036a7fef2d587a64 by Miss Islington (bot) 
in branch '3.8':
bpo-37549: os.dup() fails for standard streams on Windows 7 (GH-15389)
https://github.com/python/cpython/commit/3921d12174c1998d9df7a08d036a7fef2d587a64


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[issue37549] os.dup() fails for standard streams on Windows 7



miss-islington  added the comment:


New changeset f8dc3e85ab01e1b0345738670dcb3993da7ec436 by Miss Islington (bot) 
in branch '3.7':
bpo-37549: os.dup() fails for standard streams on Windows 7 (GH-15389)
https://github.com/python/cpython/commit/f8dc3e85ab01e1b0345738670dcb3993da7ec436


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[issue37930] make fails when compiling Python 2.6 from source (posixmodule.c)



Ned Deily  added the comment:

Python 2.6 reached end-of-life in 2013, six years ago, and has not received any 
non-security bug fixes since 2010.  We strongly recommend thst you migrate to a 
modern, supported version of Python, if not Python 3.7, then at least Python 
2.7 which itself will reach end-of-life in 2020.

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[issue37916] distutils: allow overriding of the RANLIB command on macOS (darwin)



Change by Ned Deily :


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nosy: +dstufft, eric.araujo

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[issue37549] os.dup() fails for standard streams on Windows 7



Change by miss-islington :


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[issue37549] os.dup() fails for standard streams on Windows 7



Change by miss-islington :


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[issue37549] os.dup() fails for standard streams on Windows 7

2019-08-23 Thread Steve Dower



Steve Dower  added the comment:


New changeset 5be666010e4df65dc4d831435cc92340ea369f94 by Steve Dower (Zackery 
Spytz) in branch 'master':
bpo-37549: os.dup() fails for standard streams on Windows 7 (GH-15389)
https://github.com/python/cpython/commit/5be666010e4df65dc4d831435cc92340ea369f94


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[issue37549] os.dup() fails for standard streams on Windows 7

2019-08-23 Thread Steve Dower



Steve Dower  added the comment:

Thanks, Eryk. In that case, I'll merge the PR.

Since Python 3.9 will not support Windows 7, we can remove it from master as 
soon as the backports are done :)

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[issue37549] os.dup() fails for standard streams on Windows 7

2019-08-23 Thread Eryk Sun

Eryk Sun added the comment:

> Should we add a version check as well [1]? I'm not totally comfortable
> with bitmasking a handle here, but if we only do this additional
> check on Win7 then I'm okay with it.

A version check should not be necessary. For file objects, setting both handle
tag bits has always been a reserved signature for console pseudohandles. Here's
the definition in the published console code:

https://github.com/microsoft/terminal/blob/b726a3d05d35928becc8313f6ac5536c9f503645/dep/Console/winconp.h#L460

It's mostly vestigial in Windows 8+ due to the addition of the ConDrv console
device. Code that routed calls to LPC-based implementations when passed a
console pseudohandle has all been removed. The only remaining use I know of is
in the console attach code. If a process is started with STARTF_USESTDHANDLES,
then AllocConsole() will only replace handles that are NULL or console
pseudohandles. The docs for GetStdHandle explain this:

Attach/detach behavior

When attaching to a new console, standard handles are always replaced
with console handles unless STARTF_USESTDHANDLES was specified during
process creation.

If the existing value of the standard handle is NULL, or the existing
value of the standard handle looks like a console pseudohandle, the
handle is replaced with a console handle.

When a parent uses both CREATE_NEW_CONSOLE and STARTF_USESTDHANDLES to
create a console process, standard handles will not be replaced unless
the existing value of the standard handle is NULL or a console
pseudohandle.

I confirmed that this is still relevant in Windows 10 by testing an inherited
pipe handle in stdout and stderr and manually setting the tag bits in the
hStdError handle value in STARTUPINFO. The console attach code preserved the
regular handle in stdout but replaced the console pseudohandle in stderr. So
the API is still reserving these tag bits in file handles, at least in one
place, which means they're still reserved in general, even though setting them
will no longer break a ReadFile call, for one example, like it would in Windows
7 (in which the API would route the call to the internal ReadConsole
implementation).

We've been relying on checking the console pseudohandle tag bits without a
version check in subprocess.Popen._filter_handle_list for a while now. Console
pseudohandles have to be removed from the handle list, else CreateProcessW will
fail.

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[issue14112] tutorial intro talks of "shallow copy" concept without explanation

2019-08-23 Thread Terry J. Reedy



Terry J. Reedy  added the comment:

With /like/link/ I agree.

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[issue17642] IDLE add font resizing hot keys and wheel

2019-08-23 Thread Terry J. Reedy



Terry J. Reedy  added the comment:

I want this too, and part of it should be simple.  Given that I have had a 
never empty backlog of PRs to review for 2 1/2 years, it got forgotten.  There 
was also a tk problem that seemed to block implementation.

Specification for hotkey: Cntl/Cmd - -+= decrease/increase font size within 
limits in the current window only.  (The current limits for turtledemo are 6 
and 100.  Change this?  The keys are fixed and cannot be customized. Keys have 
no affect on IdleConf.  Setting font size in dialog continues to set font size 
for all Windows, whether individually set or not.  Should work same for editor 
and text (read-only) windows.

As near as I can tell, these key combinations currently do nothing.  I presume 
they are not bound in the built-in keysets.  Custom keysets are always subject 
to interference when we add new key bindings.  (I don't know that the custom 
key dialog checks against such fixed builtins. Another issue.  Checking custom 
keysets on import is likely a third issue.)

Implementation for hotkey: The desired behavior is the behavior of turtledemo, 
so the same implementation should work.  It is annoying that we need to add it 
separately for editor and text windows.  But refactoring to create a common 
base class would be a lot harder. 

Mousewheel: Currently, in turtledemo, control-wheel changes size on all 
systems.  

Raymond: Should it be cmd-wheel on Mac?

In msg226328 I reported a tk issue blocking both this and line numbers.  We now 
deliver 3.7.4 and 3.8.0 with tk 8.6.9.  We have line numbers because I no 
longer saw the glitchy behavior I remember.  Nor did I see any issue with font 
resizing with turtledemo.

I may include the module browser, etc, with this issue.  Dialogs would be 
another issue.

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[issue26589] Add HTTP Response code 451



Change by Raymond Hettinger :


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status: open -> closed

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[issue26589] Add HTTP Response code 451



Raymond Hettinger  added the comment:


New changeset 761e5a7c7f57cf2a09106c0afa038f04de6a9ed2 by Raymond Hettinger 
(Miss Islington (bot)) in branch '3.8':
bpo-26589: Add http status code 451 (GH-15413) (GH-15436)
https://github.com/python/cpython/commit/761e5a7c7f57cf2a09106c0afa038f04de6a9ed2


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[issue9938] Add optional kwargs to argparse

2019-08-23 Thread hai shi



Change by hai shi :


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title: Improving interactive use of argparse -> Add optional kwargs to argparse

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[issue26589] Add HTTP Response code 451



Change by miss-islington :


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stage: resolved -> patch review
pull_request: https://github.com/python/cpython/pull/15436

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[issue26589] Add HTTP Response code 451



Raymond Hettinger  added the comment:


New changeset 8f080b09953a2d862de5c74edf414a54ea3dbea5 by Raymond Hettinger in 
branch 'master':
bpo-26589: Add http status code 451 (GH-15413)
https://github.com/python/cpython/commit/8f080b09953a2d862de5c74edf414a54ea3dbea5


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[issue36763] Implementation of the PEP 587



Change by STINNER Victor :


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pull_request: https://github.com/python/cpython/pull/15435

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[issue36763] Implementation of the PEP 587



miss-islington  added the comment:


New changeset 9cbdce3917ab41856b61ac5c0f3c4ac0e203f320 by Miss Islington (bot) 
in branch '3.8':
bpo-36763, doc: Add links in the new C API init doc (GH-15433)
https://github.com/python/cpython/commit/9cbdce3917ab41856b61ac5c0f3c4ac0e203f320


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[issue36763] Implementation of the PEP 587



STINNER Victor  added the comment:


New changeset 120b707a6d43452e067daa55a8fdca69f9424abc by Victor Stinner in 
branch 'master':
bpo-36763: PyConfig_Read() handles PySys_AddXOption() (GH-15431)
https://github.com/python/cpython/commit/120b707a6d43452e067daa55a8fdca69f9424abc


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[issue36763] Implementation of the PEP 587



Change by miss-islington :


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pull_request: https://github.com/python/cpython/pull/15434

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[issue36763] Implementation of the PEP 587



STINNER Victor  added the comment:


New changeset 1beb7c3de9c3d0e802e4267a11d937e8f024d661 by Victor Stinner in 
branch 'master':
bpo-36763, doc: Add links in the new C API init doc (GH-15433)
https://github.com/python/cpython/commit/1beb7c3de9c3d0e802e4267a11d937e8f024d661


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[issue36763] Implementation of the PEP 587



Change by STINNER Victor :


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pull_request: https://github.com/python/cpython/pull/15433

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[issue36763] Implementation of the PEP 587



STINNER Victor  added the comment:

> The first doc should mention somewhere the new doc.

Done in PR 15433.

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[issue36763] Implementation of the PEP 587



STINNER Victor  added the comment:

> _PySys_ReadPreInitOptions() code should be moved somewhere closer to 
> PyConfig_Read().

Done in PR 15431.

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[issue36763] Implementation of the PEP 587



Change by STINNER Victor :


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pull_request: https://github.com/python/cpython/pull/15431

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[issue36763] Implementation of the PEP 587



miss-islington  added the comment:


New changeset a6427cb2a279c4125dc26d468bcbb3374cdc5f41 by Miss Islington (bot) 
in branch '3.8':
bpo-36763: Implement PyWideStringList_Insert() of PEP 587 (GH-15423)
https://github.com/python/cpython/commit/a6427cb2a279c4125dc26d468bcbb3374cdc5f41


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[issue37931] crash reimporting posix after Py_Finalize on mac

2019-08-23 Thread Benoit Hudson



Change by Benoit Hudson :


--
keywords: +patch
pull_requests: +15125
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/15428

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[issue36763] Implementation of the PEP 587



STINNER Victor  added the comment:


New changeset 3842f2997fbd4dc840986aad2bb94656815e243b by Victor Stinner in 
branch 'master':
bpo-36763: Implement PyWideStringList_Insert() of PEP 587 (GH-15423)
https://github.com/python/cpython/commit/3842f2997fbd4dc840986aad2bb94656815e243b


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[issue36763] Implementation of the PEP 587



Change by miss-islington :


--
pull_requests: +15124
pull_request: https://github.com/python/cpython/pull/15427

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[issue37757] TargetScopeError not raised for comprehension scope conflict

2019-08-23 Thread Guido van Rossum



Guido van Rossum  added the comment:

The decision has been made to get rid of TargetScopeError and instead just use 
SyntaxError. PEP 572 was updated already. We're just waiting for someone 
(Serhiy?) to review Nick's patch, PR #15131.

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[issue37931] crash reimporting posix after Py_Finalize on mac

2019-08-23 Thread Benoit Hudson



New submission from Benoit Hudson :

On OSX, with --enable-shared, if you shut down python and reinitialize, you can 
get a crash.

Repro steps: see attached crashy.c
gcc -I. -I ../Include/ -L. crashy.c -lpython3.9
./a.out

On OSX, with --enable-shared, you get a crash! On other platforms including on 
OSX static builds, no crash.

Not a regression: it's present in 2.7 (where we actually hit it).

PR incoming, the fix is simple. It has to do with caching (on OSX shared builds 
only) a stale value for the environment when building os.environ the first 
time; if you change the environment, the second initialization reads garbage 
when building os.environ.

--
components: Interpreter Core, macOS
files: crashy.c
messages: 350309
nosy: Benoit Hudson, ned.deily, ronaldoussoren
priority: normal
severity: normal
status: open
title: crash reimporting posix after Py_Finalize on mac
type: crash
versions: Python 3.9
Added file: https://bugs.python.org/file48559/crashy.c

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[issue31727] FTP_TLS errors when use certain subcommands

2019-08-23 Thread Neha Reddy



Neha Reddy  added the comment:

We faced the same issue while trying to copy files to an FTPS server. 
We are trying to connect to a Filezilla server. The type of encryption we are 
using for the FTPS is 'Require explicit FTP over TLS'.

There are the errors that my colleague and I had while trying to use the 
ftp.nlst() or the storbinary() functions in ftplib. 

EOF occurred in violation of protocol (_ssl.c:852)
OSError: [Errno 0] Error
 
After some research on the internet, we found a workaround on stack overflow 
(https://stackoverflow.com/questions/46633536/getting-a-oserror-when-trying-to-list-ftp-directories-in-python)
 

Below is the code for the workaround. hoping this could help resolve the issue 
in the newer version. 
 
import ftplib
from ssl import SSLSocket


class ReusedSslSocket(SSLSocket):
def unwrap(self):
pass


class MyFTP_TLS(ftplib.FTP_TLS):
"""Explicit FTPS, with shared TLS session"""
def ntransfercmd(self, cmd, rest=None):
conn, size = ftplib.FTP.ntransfercmd(self, cmd, rest)
if self._prot_p:
conn = self.context.wrap_socket(conn,
server_hostname=self.host,
session=self.sock.session)  # 
reuses TLS session
conn.__class__ = ReusedSslSocket  # we should not close reused ssl 
socket when file transfers finish
return conn, size

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[issue23878] Missing sanity checks for various C library function calls...

2019-08-23 Thread Zackery Spytz



Change by Zackery Spytz :


--
nosy: +ZackerySpytz
versions: +Python 2.7, Python 3.7, Python 3.8, Python 3.9 -Python 3.4

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[issue23878] Missing sanity checks for various C library function calls...

2019-08-23 Thread Zackery Spytz



Change by Zackery Spytz :


--
pull_requests: +15123
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/15424

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[issue36763] Implementation of the PEP 587



Change by STINNER Victor :


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pull_requests: +15122
pull_request: https://github.com/python/cpython/pull/15423

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[issue34898] add mtime argument to gzip.compress

2019-08-23 Thread Daniel Himmelstein



Daniel Himmelstein  added the comment:

Any reason not to also expose mtime in the gzip.open API?

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[issue26024] Non-ascii Windows locale names

2019-08-23 Thread Vidar Fauske



Vidar Fauske  added the comment:

Thanks. Note that the failing with `
locale.setlocale(locale.LC_ALL, locale.getdefaultlocale())` I mentioned above 
is a different problem, that is tracked in a much older issue: 
https://bugs.python.org/issue10466

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[issue37454] Clarify docs for math.log1p()

2019-08-23 Thread Tim Peters



Tim Peters  added the comment:

> Sometimes you guys make me feel dumb as a rock.

I expect we all do that favor for each other at times ;-)

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[issue34679] asyncio.add_signal_handler call fails if not on main thread

2019-08-23 Thread Brett Slatkin



Brett Slatkin  added the comment:

Maybe we should just roll back https://bugs.python.org/issue34687 to fix both 
issues? Otherwise asyncio will be broken on Windows in 3.8. Is general API 
stability more important than performance?

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[issue10466] locale.py resetlocale throws exception on Windows (getdefaultlocale returns value not usable in setlocale)

2019-08-23 Thread Vidar Fauske



Vidar Fauske  added the comment:

Note that this is still an issue on Windows:

>>> import locale
>>> locale.getdefaultlocale()
('en_US', 'cp1252')
>>> locale.setlocale(locale.getdefaultlocale())
Error: unsupported locale setting

--
components: +Windows
nosy: +paul.moore, steve.dower, vidartf, zach.ware
versions: +Python 3.7 -Python 3.1, Python 3.2

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[issue37930] make fails when compiling Python 2.6 from source (posixmodule.c)

2019-08-23 Thread Pablo Galindo Salgado



Pablo Galindo Salgado  added the comment:

Hi Oguz,

Sadly Python 2.6.8 is not supported anymore

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[issue14465] xml.etree.ElementTree: add feature to prettify XML output

2019-08-23 Thread Stefan Behnel



Change by Stefan Behnel :


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

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[issue14465] xml.etree.ElementTree: add feature to prettify XML output

2019-08-23 Thread Stefan Behnel



Stefan Behnel  added the comment:


New changeset b5d3ceea48c181b3e2c6c67424317afed606bd39 by Stefan Behnel in 
branch 'master':
bpo-14465: Add an indent() function to xml.etree.ElementTree to pretty-print 
XML trees (GH-15200)
https://github.com/python/cpython/commit/b5d3ceea48c181b3e2c6c67424317afed606bd39


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[issue37830] continue and break in finally with return in try results with segfault

2019-08-23 Thread Pablo Galindo Salgado



Pablo Galindo Salgado  added the comment:

I think PR 15320 should be merge as soon as possible at least to fix the 
segfault and stop the release blocker. Anything else can wait IMHO

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[issue37055] Numerous warnings with blake2 module

2019-08-23 Thread Pablo Galindo Salgado



Pablo Galindo Salgado  added the comment:

Related to this, the blake2 function (declared as static inline) is not used, 
which makes the Solaris and compilers unhappy. Patch for reference:

--- a/Modules/_blake2/impl/blake2.h
+++ b/Modules/_blake2/impl/blake2.h
@@ -169,11 +169,6 @@
   BLAKE2_API int blake2sp( uint8_t *out, const void *in, const void *key, 
size_t outlen, size_t inlen, size_t keylen );
   BLAKE2_API int blake2bp( uint8_t *out, const void *in, const void *key, 
size_t outlen, size_t inlen, size_t keylen );

-  static inline int blake2( uint8_t *out, const void *in, const void *key, 
size_t outlen, size_t inlen, size_t keylen )
-  {
-return blake2b( out, in, key, outlen, inlen, keylen );
-  }
-
 #if defined(__cplusplus)
 }
 #endif

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[issue34679] asyncio.add_signal_handler call fails if not on main thread

2019-08-23 Thread Yury Selivanov



Yury Selivanov  added the comment:

Andrew, can you fix ctrl-c/windows issue? I'm basically afk until monday. 

And we're not going to do anything about add_signal_handler in 3.8.

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[issue29535] datetime hash is deterministic in some cases

2019-08-23 Thread Ashwin Ramaswami



Ashwin Ramaswami  added the comment:

Oh, that PR is already there in PR 15269, great!

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[issue36344] install_certificates.command too complicated


Łukasz Langa  added the comment:

This is marked as a release blocker. The last 3.8 beta is scheduled for Monday. 
Please decide how to proceed ASAP.

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priority: deferred blocker -> release blocker

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[issue36205] Python 3.7 and 3.8 process_time is not reported correctly when built on older macOS versions


Łukasz Langa  added the comment:

This is marked as a release blocker. The last beta is scheduled for Monday. 
Please decide how to proceed ASAP.

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[issue35998] test_asyncio: test_start_tls_server_1() TimeoutError on Fedora 29


Łukasz Langa  added the comment:

Should this be closed?

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[issue37757] TargetScopeError not raised for comprehension scope conflict


Łukasz Langa  added the comment:

This is marked as a release blocker. The last beta is scheduled for Monday. 
Please decide how to proceed ASAP.

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priority: deferred blocker -> release blocker

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[issue37055] Numerous warnings with blake2 module


Łukasz Langa  added the comment:

This is marked as a release blocker. The last beta is scheduled for Monday. 
Please decide how to proceed ASAP.

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nosy: +lukasz.langa
priority: deferred blocker -> release blocker

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[issue37549] os.dup() fails for standard streams on Windows 7

2019-08-23 Thread Bruno Oliveira



Change by Bruno Oliveira :


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nosy: +Bruno Oliveira

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[issue34155] email.utils.parseaddr mistakenly parse an email


Łukasz Langa  added the comment:

Downgraded the severity since 3.6 - 3.9 are merged.

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nosy: +lukasz.langa
priority: deferred blocker -> critical

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[issue37549] os.dup() fails for standard streams on Windows 7


Łukasz Langa  added the comment:

This is marked as a release blocker. The last beta is scheduled for Monday. 
Please decide how to proceed ASAP.

--

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[issue37830] continue and break in finally with return in try results with segfault


Łukasz Langa  added the comment:

This is marked as a release blocker. The last beta is scheduled for Monday. 
Please decide how to proceed ASAP.

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[issue34679] asyncio.add_signal_handler call fails if not on main thread


Łukasz Langa  added the comment:

Please fix this ASAP, last 3.8 beta is scheduled for Monday.

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[issue37428] SSLContext.post_handshake_auth implicitly enables cert validation


Łukasz Langa  added the comment:

Should this be closed?

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[issue37440] httplib should enable post-handshake authentication for TLS 1.3


Łukasz Langa  added the comment:

Should this be closed?

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[issue29535] datetime hash is deterministic in some cases

2019-08-23 Thread Ashwin Ramaswami



Ashwin Ramaswami  added the comment:

Makes sense, thanks for the explanation. The risk is that if there is code 
that, say, converts a POST dictionary to a dictionary with numeric keys, that 
code could be exploited. Creating a non-deterministic hash doesn't necessarily 
preclude hash(x) = x for a small enough x either. 

Given that other libraries (NumPy, etc.) rely on the numeric hash staying the 
way it is, it makes sense to keep it as it is. Since when did something that 
seems at first glance to be an implementation detail become more like a 
backwards-incompatible API, though? (For example, the implementation of the 
numeric hash was changed without any backwards-compatibility issues in 
https://bugs.python.org/issue14621). Might there be a better way to clarify 
this distinction for other features in Python?

I think the way forward for this patch is to keep the datetime hash as it is, 
and remove "datetime" in the parts of documentation that enumerate which data 
types have non-deterministic hashes.

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[issue37930] make fails when compiling Python 2.6 from source (posixmodule.c)

2019-08-23 Thread Oguz_eren



Change by Oguz_eren :


Added file: https://bugs.python.org/file48558/config.log

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[issue34521] Multiple tests (test_socket, test_multiprocessing_*) fail due to incorrect recvmsg(2) buffer lengths, causing failures on FreeBSD CURRENT