[issue40686] Compiler warnings in _zoneinfo.c on Windows build in 64-bit

[Dong-hee Na]

Dong-hee Na  added the comment:

@pablogsal
GH-20342 looks like related to this issue.
Can you update the current status?

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[issue40828] shared memory problems with multiprocessing.Pool

[SilentGhost]

Change by SilentGhost :


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[issue40465] Deprecate the optional *random* argument to random.shuffle()

[Anthony Sottile]

Anthony Sottile  added the comment:

pre-commit uses this to do deterministic shuffling, please don't remove this

https://github.com/pre-commit/pre-commit/issues/1479

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[issue40465] Deprecate the optional *random* argument to random.shuffle()

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Raymond, could you please add an entry in What's New?

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[issue40832] hi param in bisect module should not accept negative values

[Vikash Raja Samuel Selvin]

New submission from Vikash Raja Samuel Selvin :

>>> bisect.bisect_right(l, 5.1, -1)
Traceback (most recent call last):
  File "", line 1, in 
ValueError: lo must be non-negative

>>> l
[0, 1, 2, 3, 4, 5, 5, 5, 6, 7, 8, 9]

>>> bisect.bisect_right(l, 5.1, 0, -2)
0

In order to be consistent with the behavior for lo and not return  wrong 
answers when hi is provided with a negative value

--
components: Library (Lib)
messages: 370416
nosy: samuel72
priority: normal
severity: normal
status: open
title: hi param in bisect module should not accept negative values
type: behavior

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[issue40831] Wrong statement that bytes paths are deprecated under Windows regarding MAX_PATH docs

[Steve Dower]

Steve Dower  added the comment:

That's correct, though I thought PEP 528 and 529 applied earlier than that? 
Around 3.6, I thought.

Feel free to make a doc update though. That reference is definitely out of date.

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[issue40832] hi param in bisect module should not accept negative values

[Raymond Hettinger]

Change by Raymond Hettinger :


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versions:  -Python 3.7, Python 3.8, Python 3.9

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[issue25782] CPython hangs on error __context__ set to the error itself

[Chris Jerdonek]

Chris Jerdonek  added the comment:

I think this issue needs deeper discussion to know how to proceed.

> If there is a chain A -> B -> C -> D -> E, after assignment C.__context__ = A 
> we will get a chain C -> A -> B -> D -> E. No exception is lost.

I understand not wanting to lose exceptions here. However, if there were a 
separate exception F and the assignment were instead C.__context__ = F without 
raising C, the new chain would be A -> B -> C -> F. We would again lose D -> E. 
So why is that not a problem here, and yet it's a problem above? If we really 
didn't want to lose the exception, we could make it A -> B -> C -> F -> D -> E 
(and if raising C, it would become C -> F -> D -> E).

Thus, I think we may want to consider separately the cases of explicitly 
setting the context (calling PyException_SetContext) and implicitly setting it 
(calling PyErr_SetObject). Maybe when setting explicitly, losing the previous 
value is okay.

Also, there's another option for the top example in the implicit case of 
raising C. We could create a copy C' of C, so the new chain would be C -> A -> 
B -> C' -> D -> E. The code already has logic to create a new exception in 
certain cases: both _PyErr_SetObject and _PyErr_NormalizeException call 
_PyErr_CreateException. There are yet more options but I don't want to lengthen 
this comment further.

Lastly, regarding Dennis's patch, I think the question of how to detect cycles 
should be discussed separately from what the behavior should be.

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[issue40832] hi param in bisect module should not accept negative values

[SilentGhost]

Change by SilentGhost :


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[issue40830] Certain uses of dictionary unpacking raise TypeError

[Mark Shannon]

Change by Mark Shannon :


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pull_request: https://github.com/python/cpython/pull/20553

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[issue36464] Python 2.7 build install fails intermittently with -j on MacOS

[Cheryl Sabella]

Cheryl Sabella  added the comment:

Even though this mentions Python 2, the pull request is against master.

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[issue1706039] Added clearerr() to clear EOF state

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue15952] format(value) and value.__format__() behave differently with unicode format

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue15276] unicode format does not really work in Python 2.x

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue2481] locale.strxfrm does not work with Unicode strings

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue12886] datetime.strptime parses input wrong

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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2.6, Python 2.7

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[issue17420] bdist_wininst does not play well with unicode descriptions

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue17387] Error in C API documentation of PySequenceMethods

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue11767] Maildir iterator leaks file descriptors by default

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue20686] Confusing statement about unicode strings in tutorial introduction

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue16700] Document that bytes OS API can returns unusable results on Windows

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue23850] Missing documentation for Py_TPFLAGS_HAVE_NEWBUFFER

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue33491] mistype of method's name

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue35151] Python 2 xml.etree.ElementTree documentation tutorial uses undocumented arguments

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue22167] iglob() has misleading documentation (does indeed store names internally)

[Serhiy Storchaka]

Change by Serhiy Storchaka :


--
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2.7

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[issue1724366] cPickle module doesn't work with universal line endings

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue21889] https://docs.python.org/2/library/multiprocessing.html#process-and-exceptions doesn't explain exception

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue8387] use universal newline mode in csv module examples

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue16891] Fix docs about module search order

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue40833] Clarify docstring of Path.rename

[Ram Rachum]

Change by Ram Rachum :


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[issue38938] Possible performance improvement for heapq.merge()

[Jim Fasarakis-Hilliard]

Change by Jim Fasarakis-Hilliard :


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[issue40831] Wrong statement that bytes paths are deprecated under Windows regarding MAX_PATH docs

[Eric L.]

Eric L.  added the comment:

The question is if only the statement that bytes are deprecated is wrong, but 
also if the long path feature is supported with bytes or not. As written, I'm a 
Linux guy, I don't feel like I have the pre-requisites to check this properly.

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[issue11722] mingw64 does not link when building extensions

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue15951] string.Formatter returns str for empty unicode template

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue14978] distutils Extension fails to be created with unicode package names

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue8893] file.{read,readlines} behaviour on Solaris

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue17112] Some doctest-based tests fail when run with python -OO

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue16739] texttestresult should decorate the stream with _WritelnDecorator

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue25511] multiprocessing pool blocks SIGTERM from being handled

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue25377] Mention octal format of mode argument of os.chmod

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue22052] Comparison operators called in reverse order for subclasses with no override.

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue26433] urllib.urlencode() does not explain how to handle unicode

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue24256] threading.Timer is not a class

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue27037] Universal newline support for zipFile.ZipExtFile.read() is not working (deprecated?), and the missing functionality not documented

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue29323] Wrong documentation (Library) for unicode and str comparison

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue28403] Porting guide: disabling & warning on implicit unicode conversions

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue8502] support plurals in pygettext

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue29882] Add an efficient popcount method for integers

[Mark Dickinson]

Mark Dickinson  added the comment:

A couple of other data points:

- Swift has nonzeroBitCount: 
https://developer.apple.com/documentation/swift/int/2886050-nonzerobitcount

- Rust has count_ones: https://doc.rust-lang.org/std/primitive.u64.html

- Go's math/bits package has OnesCount

- The closest thing in Mathematica appears to be DigitCount, which isn't 
base-specific.

@Mark Shannon: what name would you suggest, and why? The term "population 
count" feels too non-obvious and specialist to me, and anything involving 
"Hamming" likewise.

"count_ones" isn't obviously a bit operation.

"count_set_bits"?

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[issue34249] Full set of format codes applies to strftime only

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue1635741] Py_Finalize() doesn't clear all Python objects at exit

[Jim Fasarakis-Hilliard]

Change by Jim Fasarakis-Hilliard :


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[issue40832] hi param in bisect module should not accept negative values

[Raymond Hettinger]

Raymond Hettinger  added the comment:

I'm -0 on this one.

Originally, there were no range checks at all.  This kept the code small and 
fast which was important because bisect() is a building block sometimes used in 
tight loops, random.choices() for example.

Later, a test for negative lo values was added when it was shown that that case 
sometimes arose in practice.  At that time, a check for negative hi value was 
skipped because it either didn't seem to arise in practice or that it would 
occur in conjunction with a negative lo value.

Another issue is that the C implementation already uses a default of -1 when 
hi=None.  So adding another check, one that we likely don't really need, would 
be more invasive and complicated than it seems at first.

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[issue40825] Add a "strict" parameter to csv.writer and csv.DictWriter

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

There is PyNumber_Check(). It is not direct analog of isinstance(obj, 
numbers.Number), it checks that the object can be explicitly converted to the 
real number (int or float). UUID and IPv4Address pass this check.

As a narrow check we can use isinstance(obj, (str, int, float)). It does not 
accept Fraction, Decimal and numpy numbers, but it is what such modules like 
json or plistlib accept.

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[issue40830] Certain uses of dictionary unpacking raise TypeError

[Mark Shannon]

Change by Mark Shannon :


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[issue13171] Bug in file.read(), can access unknown data.

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue5184] Add -3 warning for extension types that implement tp_compare but not tp_richcompare

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue1294232] Error in metaclass search order

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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

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[issue23557] Misc/SpecialBuilds.txt contains outdated information about PYMALLOC_DEBUG

[Serhiy Storchaka]

Change by Serhiy Storchaka :


--
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2.7

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[issue29236] 'an ASCII string of one or more PEM-encoded certificates' needs to be unicode

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue35228] Index search in CHM help crashes viewer

[Keelung Yang]

Keelung Yang  added the comment:

It's reoccurable in Python 3.8.3 (tags/v3.8.3:6f8c832, May 13 2020, 22:37:02) 
[MSC v.1924 64 bit (AMD64)] on windows version 10.0.19041.264

Just need to open "Python 3.8 Manuals (64-bit)" --> index --> input 'p' on 
keyboard.

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[issue13649] termios.ICANON is not documented

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue31743] Proportional Width Font on Generated Python Docs PDFs

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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2.7

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[issue29882] Add an efficient popcount method for integers

[Mark Shannon]

Mark Shannon  added the comment:

Why are calling a population count method "bit_count()"?
That seems likely to cause confusion with "bit_length()".

I might reasonable expect that 0b1000.bit_count() be 4, not 1. It does have 4 
bits.
Whereas 0b1000.population_count() is clearly 1.

I have no objection to adding this method, just the choice of name.

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[issue36464] Python 2.7 build install fails intermittently with -j on MacOS

[Cheryl Sabella]

Change by Cheryl Sabella :


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versions: +Python 3.10 -Python 2.7

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[issue9326] Error message for incorrect number of (function) args is incorrect

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

In Python 3:

TypeError: f() missing 1 required positional argument: 'a'

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[issue9329] freeze tool cannot handle JSON module properly

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

.decode('hex') no longer used in Python 3.

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[issue15918] subprocess.Popen reads errpipe_read incorrectly, can result in short read

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue12398] Sending binary data with a POST request in httplib can cause Unicode exceptions

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue17191] pdb list shows unexpected code when stack frame includes a try / finally block

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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status: open -> closed

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[issue15276] unicode format does not really work in Python 2.x

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue21547] '!s' formatting documentation bug

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue9196] Improve docs for string interpolation "%s" re Unicode strings

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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status: open -> closed

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[issue23514] multiprocessing documentation - little more examples for parallel computing

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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superseder:  -> multiprocessing doc organization impedes understanding

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[issue20296] PyArg_ParseTuple 2.X docs mention int for "t#", but "Py_ssize_t" for "w#", etc.

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue24921] Operator precedence table in 5.15 should be highest to lowest precedence

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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2.7

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[issue29257] Possible error in discussion of Abstract Base Classes and abstract properties

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue29882] Add an efficient popcount method for integers

[Mark Dickinson]

Mark Dickinson  added the comment:

> Why are calling a population count method "bit_count()"?

Naming things is hard, but I don't think this is an unreasonable name, and it's 
not without precedent. Java similarly has Integer.bitCount and 
BigInteger.bitCount. MySQL has BIT_COUNT.

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[issue19670] SimpleCookie Generates Non-RFC6265-Compliant Cookies

[Serhiy Storchaka]

Change by Serhiy Storchaka :


--
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2.7

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[issue11315] unicode support in Cookie module

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue40833] Clarify docstring of Path.rename

[Ram Rachum]

New submission from Ram Rachum :

Writing the PR now.

--
assignee: docs@python
components: Documentation
messages: 370459
nosy: brandtbucher, cool-RR, docs@python
priority: normal
severity: normal
status: open
title: Clarify docstring of Path.rename
type: enhancement
versions: Python 3.10, Python 3.8, Python 3.9

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[issue33740] PyByteArray_AsString C-API description lacks the assurance, that the trailing null-byte is appended.

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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[issue23019] pyexpat.errors wrongly bound to message strings instead of message codes

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Python 2.7 is no longer supported.

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status: open -> closed

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[issue37602] nonzero fixer problem

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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2.7

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[issue17544] regex code re-raises exceptions on success

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

When function sets an exception, it should return NULL. Otherwise the behavior 
of the interpreter is undefined, it can crash in debug build or developing mode.

See for example 
https://docs.python.org/3/extending/extending.html#intermezzo-errors-and-exceptions

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[issue22167] iglob() has misleading documentation (does indeed store names internally)

[Guido van Rossum]

Guido van Rossum  added the comment:

Hm, yeah.

Perhaps we can add some buffering so that for directories with a small
number of files (say < 1000) the FD is closed before recursing into it,
while for large directories it keeps the FD open until the last block of
1000 DirEntries is read? It's unlikely that someone has a tree that's both
deep *and* wide at many levels, since that would mean an inordinate number
of files indeed.

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[issue40686] Compiler warnings in _zoneinfo.c on Windows build in 64-bit

[Pablo Galindo Salgado]

Pablo Galindo Salgado  added the comment:

> Can you update the current status?

Sorry, what do you mean by "current status"? Do you meant this issue or the 
status of that PR?

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[issue22167] iglob() has misleading documentation (does indeed store names internally)

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

This is an interesting idea, but I afraid it will complicate the code too much, 
destroying the remnants of the initial elegant design. I am going to try to 
experiment with this idea after implementing other features, so it will not 
block them.

For now we need to document that iglob() may collect some names internally 
before starting to emit them. If my English be better I would did it myself.

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[issue40788] Build issue Solaris 10 Sparc

[Warren Hardy]

Change by Warren Hardy :


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type:  -> compile error

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[issue17005] Add a topological sort algorithm

[Jim Fasarakis-Hilliard]

Jim Fasarakis-Hilliard  added the comment:

It does seem out of place in functools, intensified by it's odd interjection 
among the other functools objects.

Considering heapq and bisect exist as standalone modules, the idea that 
topological sorting could go in its own module wouldn't be without precedent.

--
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[issue40834] sending str via channel caused truncate on last character

[SilentGhost]

Change by SilentGhost :


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[issue22167] iglob() has misleading documentation (does indeed store names internally)

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Yes, for the pattern 'a*/b*/c*' you will have an open file descriptor for every 
component with metacharacters:

for a in scandir('.'):
if fnmatch(a.name, 'a*'):
for b in scandir(a.path):
if fnmatch(b.name, 'b*'):
for c in scandir(b.path):
if fnmatch(c.name, 'c*'):
yield c.path

You can have hundreds nested directories. Looks not bad, because by default the 
limit on the number of file descriptors is 1024 on Linux. But imagine you run a 
server and it handles tens requests simultaneously. Some of them or all of them 
will fail, and not just return an error, but return an incorrect result, 
because all OSError, including "Too many open files", are silenced in glob().

Also all these file descriptors will not be closed until you finish the 
iteration, or, in case of error, until the garbage collector close them 
(because interrupted generators tend to create reference loops).

So it is vital to close the file descriptor before you open other file 
descriptors in the recursion.

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[issue4356] Add "key" argument to "bisect" module functions

[Raymond Hettinger]

Change by Raymond Hettinger :


--
pull_requests: +19799
pull_request: https://github.com/python/cpython/pull/20556

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[issue23885] urllib.quote horribly mishandles unicode as second parameter

[Zackery Spytz]

Zackery Spytz  added the comment:

Python 2 is EOL, so I think this issue should be closed.

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[issue17005] Add a topological sort algorithm

[Pablo Galindo Salgado]

Pablo Galindo Salgado  added the comment:

Any suggestions for the new module? I assume we can move this to a new 
topsort/topological_sort or similar...

What do people think?

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[issue24048] remove_module() needs to save/restore exception state

[Zackery Spytz]

Zackery Spytz  added the comment:

It seems that Serhiy backported the fix.

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[issue17005] Add a topological sort algorithm

[Rémi Lapeyre]

Rémi Lapeyre  added the comment:

Could it make sense to have this in the often proposed imath module? 

It's integers per se but Both number theory and graph theory are part of 
discrete mathematics so it may feel more at home there?

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[issue40825] Add a "strict" parameter to csv.writer and csv.DictWriter

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Yes, converting Decimal to float can lose precision, so we cannot require this. 
PyNumber_Check() is already used for QUOTE_NONNUMERIC, so it would be logical 
to use it in determining that the object is a number in the cvs module.

But now the problem is with determining what is a "string". There is no way to 
check whether the object is "string-like", because virtually all objects can be 
converted to string. The only standard exception is bytes and bytearray for 
which str() may emit BytesWarning, so this conversion is not reliable. If 
restrict it only to an instance of str or its subclasses, it may break other 
user cases, for example writing Path in CVS.

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[issue33618] Support TLS 1.3

[Christian Heimes]

Change by Christian Heimes :


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

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[issue17005] Add a topological sort algorithm

[Pablo Galindo Salgado]

Pablo Galindo Salgado  added the comment:

If we move it, I would prefer a new module that somehow makes clear the scope, 
something like graphutils or graphtheory or graph (although this las one will 
probably collide with many existing things).

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[issue40835] Incorrect handling for msgctxt in msgfmt.py

[Doug Addy]

New submission from Doug Addy :

Running msgfmt.py with the attached po file will produce an incorrect context 
for the entry "test".

Looking at the script, we require a comment to follow a contexted section for 
the context to be cleared. The gettext documentation makes clear that all 
comments are optional, so this is not desired behaviour.

My reading of the gettext documentation has a "msgctxt" line applying only to 
the current entry, so it should be cleared once the last msgstr has been 
written for that entry.

I will endeavour to provide a patch within the next day or two.

--
components: Demos and Tools
messages: 370502
nosy: da1910
priority: normal
severity: normal
status: open
title: Incorrect handling for msgctxt in msgfmt.py
type: behavior
versions: Python 3.8

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[issue17005] Add a topological sort algorithm

[gaborbernat]

gaborbernat  added the comment:

I like graphutils for what it's worth.

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