[issue26943] Datetime.strptime crash

[Jens de Bruijn]

New submission from Jens de Bruijn:

Datetime crashes while running script from the command line. When running the 
same date string from the interpreter (Ubuntu 16.04) it does not crash.

date = datetime.datetime.strptime('May 01 23:59:59 + 2016', '%b %d %H:%M:%S 
+ %Y')

--
components: Extension Modules
files: Screenshot from 2016-05-04 08-52-30.png
messages: 264784
nosy: Jens de Bruijn
priority: normal
severity: normal
status: open
title: Datetime.strptime crash
type: crash
versions: Python 3.5
Added file: http://bugs.python.org/file42706/Screenshot from 2016-05-04 
08-52-30.png

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[issue26922] build from fresh checkout fails

[Antoine Pitrou]

Antoine Pitrou added the comment:

Le 04/05/2016 05:10, Nick Coghlan a écrit :
> 
> Does strace give any potentially useful hints?
> 
> For me:
> 
> $ strace -e trace=file ./python -c "pass"

Ah, thanks. It seems this was failing due to a pyvenv.cfg in the parent
directory, which I removed.

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[issue26929] android: test_strptime fails

[Xavier de Gaye]

Xavier de Gaye added the comment:

Here is the result of running on android:

[issue26923] asyncio.gather drops cancellation

[Mathias Arens]

Changes by Mathias Arens :


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nosy: +tatellos

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[issue26881] modulefinder should reuse the dis module

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

modulefinder in 2.7 should be compatible with Python 2.2 (see PEP 291). Thus we 
can't just add new function in dis and reuse it in modulefinder. We should 
duplicate this function in modulefinder.

I don't know if there is corresponding rule for 3.x. Should modulefinder keep 
compatibility with say 3.1?

--
nosy: +jvr, theller
Added file: http://bugs.python.org/file42707/dis_unpack_args_2.patch

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[issue26932] RTLD_* macros are not defined on Android

[Xavier de Gaye]

Xavier de Gaye added the comment:

test_rtld_constants is now ok at the tip of the default branch.
Thanks Chi Hsuan Yen.
I will enter a separate issue for test_getgroups and reference it here as well 
as in issue #26865.

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[issue26929] android: test_strptime fails

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

1904 52 6   1904 52 6
1905 01 0   1904 53 7
 ^^

1906 52 0   1906 52 7
1906 52 1   1907 53 1


strftime() on Android incorrectly formats %V or %G for the last or the first 
incomplete week in a year.

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[issue26865] Meta-issue: support of the android platform

[Xavier de Gaye]

Xavier de Gaye added the comment:

Tests that fail on an android emulator running an x86 system image at API level 
21:

  issue #26944: android: test_posix fails

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[issue26932] RTLD_* macros are not defined on Android

[Xavier de Gaye]

Xavier de Gaye added the comment:

> I will enter a separate issue for test_getgroups and reference it here as 
> well as in issue #26865.
issue #26944: android: test_posix fails.

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[issue26922] build from fresh checkout fails

[Antoine Pitrou]

Changes by Antoine Pitrou :


--
resolution:  -> not a bug
stage:  -> resolved
status: open -> closed

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[issue26944] android: test_posix fails

[Xavier de Gaye]

New submission from Xavier de Gaye:

test_posix fails on an android emulator running an x86 system image at API 
level 21.

On android we have instead of a list of group IDs:
root@generic_x86:/data/local/tmp # id -G
uid=0(root) gid=0(root) 
groups=1003(graphics),1004(input),1007(log),1011(adb),1015(sdcard_rw),1028(sdcard_r),3001(net_bt_admin),3002(net_bt),3003(inet),3006(net_bw_stats)
 context=u:r:su:s0


==
ERROR: test_getgroups (test.test_posix.PosixTester)
--
Traceback (most recent call last):
  File "/sdcard/org.bitbucket.pyona/lib/python3.6/test/test_posix.py", line 
815, in test_getgroups
set([int(x) for x in groups.split()]),
  File "/sdcard/org.bitbucket.pyona/lib/python3.6/test/test_posix.py", line 
815, in 
set([int(x) for x in groups.split()]),
ValueError: invalid literal for int() with base 10: 'uid=0(root)'

--
Ran 83 tests in 0.114s

FAILED (errors=1, skipped=11)
test test_posix failed
1 test failed:
test_posix
Total duration: 0:00:01

--
components: Cross-Build, Library (Lib)
messages: 264789
nosy: Alex.Willmer, larry, xdegaye
priority: normal
severity: normal
status: open
title: android: test_posix fails
versions: Python 3.6

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[issue26944] android: test_posix fails

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

See more information in comments in issue26932. Since the id tool looks fixed 
in Android 6.x we should skip the test on Android <6.x.

--
components: +Tests -Cross-Build, Library (Lib)
dependencies: +android: add platform.android_ver()
nosy: +serhiy.storchaka
type:  -> behavior

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[issue26932] RTLD_* macros are not defined on Android

[Xavier de Gaye]

Xavier de Gaye added the comment:

> Xavier, please check that issues with ctypes and threading are not gone.

No ctypes still crashes and threading still hangs.

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[issue26873] xmlrpclib raises when trying to convert an int to string when unicode is available

[Roundup Robot]

Roundup Robot added the comment:

New changeset 0d015f6aba8b by Serhiy Storchaka in branch '3.5':
Issue #26873: xmlrpc now raises ResponseError on unsupported type tags
https://hg.python.org/cpython/rev/0d015f6aba8b

New changeset 8f7cb3b171f3 by Serhiy Storchaka in branch 'default':
Issue #26873: xmlrpc now raises ResponseError on unsupported type tags
https://hg.python.org/cpython/rev/8f7cb3b171f3

New changeset 7050c9fc1f72 by Serhiy Storchaka in branch '2.7':
Issue #26873: xmlrpclib now raises ResponseError on unsupported type tags
https://hg.python.org/cpython/rev/7050c9fc1f72

--
nosy: +python-dev

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[issue26873] xmlrpclib raises when trying to convert an int to string when unicode is available

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


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

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[issue26924] android: test_concurrent_futures fails

[Xavier de Gaye]

Xavier de Gaye added the comment:

On android:

root@generic_x86:/data/local/tmp # python
Python 3.6.0a0 (default:811ccdee6f87+, May  4 2016, 10:31:14) 
[GCC 4.9 20140827 (prerelease)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from _multiprocessing import sem_unlink
>>> sem_unlink('foo')
Traceback (most recent call last):
  File "", line 1, in 
OSError: [Errno 38] Function not implemented
>>>

--

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[issue26826] Expose new copy_file_range() syscall in os module.

[Marcos Dione]

Marcos Dione added the comment:

Sorry for the delay.

Based on suggestions in the mailing list, I changed the *count* handling as if 
it were a ssize_t, and I added a note about ignored output parameters.

--
title: Expose new copy_file_range() syscal in os module. -> Expose new 
copy_file_range() syscall in os module.
Added file: http://bugs.python.org/file42708/copy_file_range.diff

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[issue26926] Large files are not supported on Android

[Xavier de Gaye]

Xavier de Gaye added the comment:

The relevant part of the output of configure on x86:

checking size of int... 4
checking size of long... 4
checking size of void *... 4
checking size of short... 2
checking size of float... 4
checking size of double... 8
checking size of fpos_t... 4
checking size of size_t... 4
checking size of pid_t... 4
checking for long long support... yes
checking size of long long... 8
checking for long double support... yes
checking size of long double... 8
checking for _Bool support... yes
checking size of _Bool... 1
checking for uintptr_t... yes
checking size of uintptr_t... 4
checking size of off_t... 4
checking whether to enable large file support... no

And as a consequence in pyconfig.h:
/* Defined to enable large file support when an off_t is bigger than a long
   and long long is available and at least as big as an off_t. You may need to
   add some flags for configuration and compilation to enable this mode. (For
   Solaris and Linux, the necessary defines are already defined.) */
/* #undef HAVE_LARGEFILE_SUPPORT */

--

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[issue26926] Large files are not supported on Android

[Xavier de Gaye]

Xavier de Gaye added the comment:

On android x86:

>>> import resource
>>> resource.setrlimit(resource.RLIMIT_FSIZE, (2**31, 2**31))
Traceback (most recent call last):
  File "", line 1, in 
OverflowError: Python int too large to convert to C long
>>> resource.setrlimit(resource.RLIMIT_FSIZE, (2**31-1, 2**31-1))
>>> resource.getrlimit(resource.RLIMIT_FSIZE)
(2147483647, 2147483647)
>>> 


The test_io tests that fail may be skipped by trying first to set this resource 
limit (if existing) to the max file size tested, in a spawned interpreter.

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[issue26919] android: test_cmd_line fails

[Xavier de Gaye]

Xavier de Gaye added the comment:

There is a related issue #4388 although different, and issue #22747 may also be 
related.

--
nosy: +haypo

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[issue26945] difflib.HtmlDiff().make_file() treat few change as whole line change

[Fairuz Zack]

New submission from Fairuz Zack:

html diff threat 2.011 as whole line added instead of only "11" is changed. 
example file i want to diff is under bug_report.txt. seems the diff not 
reasonable for other line in the txt as well.

--
components: Library (Lib)
files: bug_report.txt
messages: 264801
nosy: Fairuz Zack
priority: normal
severity: normal
status: open
title: difflib.HtmlDiff().make_file() treat few change as whole line change
type: behavior
versions: Python 2.7
Added file: http://bugs.python.org/file42709/bug_report.txt

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[issue26924] android: test_concurrent_futures fails

[Berker Peksag]

Berker Peksag added the comment:

It normally should raise an ImportError if sem_unlink is not available. Could 
you try the attached patch please?

--
keywords: +patch
nosy: +berker.peksag
Added file: http://bugs.python.org/file42710/sem_unlink.diff

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[issue26696] Document collections.abc.ByteString

[Xiang Zhang]

Xiang Zhang added the comment:

Add collections.abc.ByteString's document.

--
keywords: +patch
Added file: http://bugs.python.org/file42711/ByteString_doc.patch

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[issue26946] os.path.realpath.__name__ is 'abspath'

[Jon Morris]

New submission from Jon Morris:

A minor issue, but the name property for realpath is actually 'abspath'.

Python 2.7.8 on Windows 6.1.7601 (7 sp1)

--
messages: 264804
nosy: Jon Morris
priority: normal
severity: normal
status: open
title: os.path.realpath.__name__ is 'abspath'
type: behavior
versions: Python 2.7

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[issue26947] Documentation improvement needed

[mPython]

New submission from mPython:

On following page: https://docs.python.org/3/glossary.html#term-hashable 
sentence "All of Python’s immutable built-in objects are hashable, while no 
mutable containers (such as lists or dictionaries) are." is not complete - 
probably a word "not" is needed on the end.

--
assignee: docs@python
components: Documentation
messages: 264805
nosy: docs@python, mPython
priority: normal
severity: normal
status: open
title: Documentation improvement needed
versions: Python 3.5

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[issue26439] ctypes.util.find_library fails when ldconfig/glibc not available (e.g., AIX)

[Michael Felt]

Michael Felt added the comment:

reworked patch. To assist port to Python3 that changes in __init__.py and 
util.py are minimal. There is a new file: aixutil.py

I have only tested on Python-2.7, so there may be issues for Python3. My goal 
is to have a single file for both versions.

The main change in util.py is lots of specific (behavior) tests that I have 
encountered (and initially failed) from projects using ctypes.cdll.

I feel confident that this will work "ASIS" with nearly all existing projects.

Note: normal return is not a full path name. A full path name is only returned 
when an archive + member could not be found, but a file with the name requested 
could be found. This "fullpath" is to be compatible with existing code 
'demanding' unpacked archives.

--
Added file: http://bugs.python.org/file42712/python.Lib.ctypes.160504.patch

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[issue26439] ctypes.util.find_library fails when ldconfig/glibc not available (e.g., AIX)

[Michael Felt]

Michael Felt added the comment:

implements ctypes.aixutil.find_library()
In a separate file as both __init__.py as util.py needs it's logic.

--
Added file: http://bugs.python.org/file42713/aixutil.py

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[issue23228] Crashes when tarfile contains a symlink and unpack directory contain it too

[Michael Vogt]

Michael Vogt added the comment:

Anything I can do to help moving this issue forward?

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[issue26948] Simplify PyImport_ImportModuleLevelObject: avoid temporary tuple of str.partition/rpartition

[STINNER Victor]

New submission from STINNER Victor:

Attached patch simplifies PyImport_ImportModuleLevelObject to avoid the 
temporary tuple created by str.partition/rpartition(). I don't expect any 
difference on the performance, it's more to cleanup the code.

--
files: import.patch
keywords: patch
messages: 264809
nosy: haypo, serhiy.storchaka
priority: normal
severity: normal
status: open
title: Simplify PyImport_ImportModuleLevelObject: avoid temporary tuple of 
str.partition/rpartition
type: performance
versions: Python 3.6
Added file: http://bugs.python.org/file42714/import.patch

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[issue26949] IDLE restarts when one debugs code raising SystemExit

[ppperry]

Changes by ppperry :


--
components: IDLE
nosy: ppperry
priority: normal
severity: normal
status: open
title: IDLE restarts when one debugs code raising SystemExit
type: behavior
versions: Python 3.4

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[issue26946] os.path.realpath.__name__ is 'abspath'

[ppperry]

ppperry added the comment:

Also is true on python 3.4. Why does this matter anyway?

--
nosy: +ppperry
versions: +Python 3.4

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[issue23228] The tarfile module crashes when tarfile contains a symlink and unpack directory contain it too

[ppperry]

Changes by ppperry :


--
title: Crashes when tarfile contains a symlink and unpack directory contain it 
too -> The tarfile module crashes when tarfile contains a symlink and unpack 
directory contain it too

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[issue23275] Can assign [] = (), but not () = []

[Berker Peksag]

Berker Peksag added the comment:

Here is an updated patch. I moved the test into test_unpack and added 
additional tests. sequence -> iterable changes should probably be applied to 
3.5 as well.

Thanks for the review, Martin.

--
type: behavior -> enhancement
Added file: http://bugs.python.org/file42715/issue23275_v3.diff

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[issue26946] os.path.realpath.__name__ is 'abspath'

[Berker Peksag]

Berker Peksag added the comment:

It's because realpath is defined as

# realpath is a no-op on systems without islink support
realpath = abspath

under Windows.

--
nosy: +berker.peksag

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[issue26860] Make os.walk and os.fwalk yield namedtuple instead of tuple

[ppperry]

Changes by ppperry :


--
title: os.walk and os.fwalk yield namedtuple instead of tuple -> Make os.walk 
and os.fwalk yield namedtuple instead of tuple

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[issue26947] Documentation improvement needed

[Xiang Zhang]

Xiang Zhang added the comment:

I think the original is OK. Adding "not" means the opposite.

--
nosy: +xiang.zhang

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[issue26948] Simplify PyImport_ImportModuleLevelObject: avoid temporary tuple of str.partition/rpartition

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

LGTM, but I left a couple of minor suggestions on Rietveld. I hope they can 
make the code yet cleaner.

--
nosy: +brett.cannon, eric.snow, ncoghlan

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[issue26906] format(object.__reduce__) fails intermittently

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

A number of other types are not initialized until you request an attribute.

Here is larger patch for 2.7 that makes 38 types to be explicitly initialized.

--
Added file: http://bugs.python.org/file42716/init_types-2.7.patch

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[issue26950] Typo in unittest.mock > Autospeccing documentation

[Joni Bekenstein]

New submission from Joni Bekenstein:

In several code examples from unittest.mock > Autospeccing documentation you 
will find "assret_called_with" instead of "assert_called_with".

--
assignee: docs@python
components: Documentation
messages: 264815
nosy: Joni Bekenstein, docs@python
priority: normal
severity: normal
status: open
title: Typo in unittest.mock > Autospeccing documentation
type: enhancement

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[issue26950] Typo in unittest.mock > Autospeccing documentation

[Berker Peksag]

Berker Peksag added the comment:

Thanks for the report, but the typos are intentional. Quoting from the 
documentation:

[...] if you misspell one of these assert methods then your assertion is 
gone:

>>> mock = Mock(name='Thing', return_value=None)
>>> mock(1, 2, 3)
>>> mock.assret_called_once_with(4, 5, 6)

Your tests can pass silently and incorrectly because of the typo.

--
nosy: +berker.peksag
resolution:  -> not a bug
stage:  -> resolved
status: open -> closed

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[issue26950] Typo in unittest.mock > Autospeccing documentation

[Joni Bekenstein]

Joni Bekenstein added the comment:

My bad, didn't see the notice! Makes sense though. Sorry for opening an issue.

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[issue26951] Unintuitive error when using generator expression in class property

[Corey Farwell]

New submission from Corey Farwell:

```
class A:
B = range(10)
C = frozenset([4, 5, 6])
D = list(i for i in B)
E = list(i for i in B if i in C)
```

```

coreyf@frewbook-pro /tmp [1]> python3 a.py
Traceback (most recent call last):
  File "a.py", line 1, in 
class A:
  File "a.py", line 5, in A
E = list(i for i in B if i in C)
  File "a.py", line 5, in 
E = list(i for i in B if i in C)
NameError: name 'C' is not defined
```

Why should I be able to access B but not C?

--
components: Interpreter Core
messages: 264819
nosy: corey
priority: normal
severity: normal
status: open
title: Unintuitive error when using generator expression in class property
type: behavior
versions: Python 2.7, Python 3.2, Python 3.3, Python 3.4, Python 3.5

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[issue26947] Documentation improvement needed

[Steven D'Aprano]

Steven D'Aprano added the comment:

Xiang Zhang is correct: the original is technically correct. If you read it 
like this:

"All of Python’s immutable built-in objects are hashable, while no mutable 
containers (such as lists or dictionaries) are [hashable]."

it should be clear. But if you have a suggestion for wording which is easier to 
understand (especially for those whose English is not so good) please say so.

--
nosy: +steven.daprano

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[issue26951] Unintuitive error when using generator expression in class property

[Emanuel Barry]

Emanuel Barry added the comment:

Using a simple metaclass shows that definition order is not at fault here:

>>> class PrintOrder(dict):
...   def __setitem__(self, item, value):
... print(item, value)
... super().__setitem__(item, value)
...
>>> class Show(type):
...   def __prepare__(name, bases): return PrintOrder()
...
>>> class A(metaclass=Show):
...   B = range(10)
...   C = frozenset([4, 5, 6])
...   D = list(i for i in B)
...   E = list(i for i in B if i in C)
...
__module__ __main__
__qualname__ A
B range(0, 10)
C frozenset({4, 5, 6})
D [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
Traceback (most recent call last):
  File "", line 1, in 
  File "", line 5, in A
  File "", line 5, in 
NameError: name 'C' is not defined

However, the following works:

>>> def local_definition():
...   F = frozenset([4, 5, 6])
...   class A(metaclass=Show):
... B = range(10)
... C = frozenset([4, 5, 6])
... D = list(i for i in B)
... E = list(i for i in B if i in F)
...   return A
...
>>> local_definition()
__module__ __main__
__qualname__ local_definition..A
B range(0, 10)
C frozenset({4, 5, 6})
D [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
E [4, 5, 6]
.A'>

Sounds like either an inconsistency between 'for' and 'if' parts of generator 
expressions, or something weird about the way generator expressions work that 
I'm unaware of.

Furthermore, this isn't documented in the tutorial, the functional programming 
How-To, the 2.4 release notes or the PEP 289:

https://docs.python.org/3/tutorial/classes.html#generator-expressions
https://docs.python.org/3/howto/functional.html#generator-expressions-and-list-comprehensions
https://docs.python.org/3/whatsnew/2.4.html#pep-289-generator-expressions
https://www.python.org/dev/peps/pep-0289/

--
nosy: +ebarry
stage:  -> needs patch

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[issue26947] Documentation improvement needed

[Eric V. Smith]

Eric V. Smith added the comment:

I'm a native speaker, and it's not the greatest sentence. How about:

All of Python’s immutable built-in objects (such as numbers, strings and 
tuples) are hashable. None of its mutable containers (such as lists or 
dictionaries) are hashable.

--
nosy: +eric.smith

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[issue26953] Failed building wheel for greenlet

[Marco]

Changes by Marco :


--
components: Installation
nosy: marcoconte_008
priority: normal
severity: normal
status: open
title: Failed building wheel for greenlet
versions: Python 3.4

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[issue26924] android: test_concurrent_futures fails

[Xavier de Gaye]

Xavier de Gaye added the comment:

Patch tested, it does not fix the problem.
This is because in pyconfig.h:
/* Define to 1 if you have the `sem_unlink' function. */
#define HAVE_SEM_UNLINK 1

Android declares the function but does not implement it. This is not the only 
case, for example issue #26857.

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[issue26952] argparse help formatter crashes

[Endre]

New submission from Endre:

I am using argparse-1.4.0.

For this code exception is thrown when the script is started with the -h option:
http://pastebin.com/dFF1paFA

This exception is thrown:
Traceback (most recent call last):
  File "C:\Users\ebak\Picea\tools\buildsystem\python\kw_set_checkers.py", line 
129, in 
args = parser.parse_args()
  File "C:\Python27\lib\argparse.py", line 1688, in parse_args
args, argv = self.parse_known_args(args, namespace)
  File "C:\Python27\lib\argparse.py", line 1720, in parse_known_args
namespace, args = self._parse_known_args(args, namespace)
  File "C:\Python27\lib\argparse.py", line 1926, in _parse_known_args
start_index = consume_optional(start_index)
  File "C:\Python27\lib\argparse.py", line 1866, in consume_optional
take_action(action, args, option_string)
  File "C:\Python27\lib\argparse.py", line 1794, in take_action
action(self, namespace, argument_values, option_string)
  File "C:\Python27\lib\argparse.py", line 994, in __call__
parser.print_help()
  File "C:\Python27\lib\argparse.py", line 2327, in print_help
self._print_message(self.format_help(), file)
  File "C:\Python27\lib\argparse.py", line 2301, in format_help
return formatter.format_help()
  File "C:\Python27\lib\argparse.py", line 279, in format_help
help = self._root_section.format_help()
  File "C:\Python27\lib\argparse.py", line 209, in format_help
func(*args)
  File "C:\Python27\lib\argparse.py", line 317, in _format_usage
action_usage = format(optionals + positionals, groups)
  File "C:\Python27\lib\argparse.py", line 388, in _format_actions_usage
start = actions.index(group._group_actions[0])
IndexError: list index out of range

--
components: Library (Lib)
messages: 264823
nosy: Endre
priority: normal
severity: normal
status: open
title: argparse help formatter crashes
type: crash
versions: Python 2.7

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[issue26953] Failed building wheel for greenlet

[Marco]

New submission from Marco:

I have tried to install bpython on Linux with this result

studio@linux:/usr/bin> pip install bpython
...
...
Running setup.py bdist_wheel for greenlet ... error
greenlet.h:8:20: fatal error: Python.h: No such file or directory
   #include 
  ^
  compilation terminated.
  error: command 'gcc' failed with exit status 1

How can I fix this error ?

MC

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[issue26953] Failed building wheel for greenlet

[Xiang Zhang]

Xiang Zhang added the comment:

Hmm, it's not suitable to report such problems here. You'd better google for 
it. At least you have to apt-get install python-dev or yum install python-devel.

--
nosy: +xiang.zhang

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[issue26953] Failed building wheel for greenlet

[Berker Peksag]

Berker Peksag added the comment:

Please use greenlet's issue tracker: 
https://github.com/python-greenlet/greenlet/issues You'll probably need to 
install Python headers by using your distribution's package manager.

--
nosy: +berker.peksag
resolution:  -> third party
stage:  -> resolved
status: open -> closed

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[issue26906] format(object.__reduce__) fails intermittently

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

An alternative way is just call PyType_Ready from _PyType_Lookup if 
type->tp_mro is NULL.

Here is a patch against 2.7 that restores the solution from issue551412, but 
returns NULL if type->tp_mro is still NULL after calling PyType_Ready. I found 
one place in tests when this is happened (CIOTest.test_IOBase_finalize in 
test_io).

--
assignee:  -> gvanrossum
nosy: +gvanrossum
Added file: http://bugs.python.org/file42717/init_type_in_pytype_lookup.patch

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[issue20120] Percent-signs (%) in .pypirc should not be interpolated

[Jason R. Coombs]

Jason R. Coombs added the comment:

I just confirmed only Python 3.5 gets bugfixes, so I'll apply this to 3.5 and 
default.

--
versions: +Python 3.6

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[issue26951] Unintuitive error when using generator expression in class property

[Steven D'Aprano]

Steven D'Aprano added the comment:

On snap! Nicely found! This seems to have something to do with the way 
generator expressions are run inside their own scope.

In Python 2.7, a list comprehension in a class sees the locals correctly:

py> class K:
... a = 2; x = [a+i for i in range(a)]
...
py> K.x
[2, 3]


But change the list comp to a generator expression, and the situation is 
different:


py> class K:
... a = 2; x = list(i for i in range(a))  # Okay
... b = 2; y = list(b+i for i in range(a))  # Raises
...
Traceback (most recent call last):
  File "", line 1, in 
  File "", line 3, in K
  File "", line 3, in 
NameError: global name 'b' is not defined


In Python 3, list comps use the same sort of temporary scope as genexprs, and 
sure enough, the list comp fails with the same error as the generator 
expression.

--
nosy: +steven.daprano

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[issue20120] Percent-signs (%) in .pypirc should not be interpolated

[Roundup Robot]

Roundup Robot added the comment:

New changeset eae59b6bf133 by Jason R. Coombs in branch '3.5':
Issue #20120: Use RawConfigParser for .pypirc parsing, removing support for 
interpolation unintentionally added with move to Python 3. Behavior no longer 
does any interpolation in .pypirc files, matching behavior in Python 2.7 and 
Setuptools 19.0.
https://hg.python.org/cpython/rev/eae59b6bf133

New changeset 89116bd505cb by Jason R. Coombs in branch 'default':
Issue #20120: Merge with 3.5
https://hg.python.org/cpython/rev/89116bd505cb

--
nosy: +python-dev

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[issue26952] argparse help formatter crashes

[Xiang Zhang]

Changes by Xiang Zhang :


--
nosy: +xiang.zhang

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[issue26951] Unintuitive error when using generator expression in class property

[Xiang Zhang]

Changes by Xiang Zhang :


--
nosy: +xiang.zhang

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[issue26954] Add Guido's rejection notice to the "with" FAQ

[Steven D'Aprano]

New submission from Steven D'Aprano:

The FAQs include a discussion of the rejected Pascal "with" statement 
(different from the Python `with`). From time to time people propose variants 
of it, such as using a leading dot to make it unambiguous.

Guido has just firmly rejected the latest such proposal. The FAQ should be 
updated to make it clear that even with a leading dot the proposal is dead, 
with a link to Guido's pronouncement.

https://mail.python.org/pipermail/python-ideas/2016-May/040070.html

--
assignee: docs@python
components: Documentation
messages: 264832
nosy: docs@python, steven.daprano
priority: normal
severity: normal
status: open
title: Add Guido's rejection notice to the "with" FAQ
versions: Python 2.7, Python 3.2, Python 3.3, Python 3.4, Python 3.5, Python 3.6

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[issue20120] Percent-signs (%) in .pypirc should not be interpolated

[Jason R. Coombs]

Jason R. Coombs added the comment:

Fixed now. I'll watch the buildbots to assure acceptance.

--
resolution:  -> fixed
status: open -> closed

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[issue26952] argparse help formatter crashes

[Berker Peksag]

Berker Peksag added the comment:

I don't think add_mutually_exclusive_group and add_argument_group are designed 
to work together. Did this worked with argparse 1.3.0 or stdlib version of 
argparse before? I'm getting the same traceback in 2.7 and 3.4+.

--
nosy: +berker.peksag

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[issue26952] argparse help formatter crashes

[Xiang Zhang]

Xiang Zhang added the comment:

This error occurs due to there is no action belong to the mutexGroup, the code 
requires at least one. You can simply add

mutexGroup.add_argument('--foo', action='store_true')

and you'll see the error disappears. I have no idea that this behaviour is 
intended or not.

--

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[issue26955] Implement equivalent to `pip.locations.distutils_scheme` in distutils

[Sylvain Corlay]

New submission from Sylvain Corlay:

When installing a python package that has `headers`, these headers are usually 
installed under the main python include directory, which can be retrieved with 
`sysconfig.get_path('include')` or directly referred to as 'include' when 
setting the include directories of an extension module. 

However, on some systems like OS X, headers for extension modules are not 
located in under the python include directory 
(/usr/local/Cellar/pythonX/X.Y.Z/Frameworks/Python.framework/Versions/X.Y/include/pythonX.Y)
 but in `/usr/local/include/pythonX.Y`.

Is there a generic way to find the location where  headers are installed in a  
python install?

pip.locations implements `distutils_scheme` which seems to be returning the 
right thing, but it seems to be a bit overkill to require pip. On the other 
side, no path returned by sysconfig corresponds to 
`/usr/local/include/pythonX.Y`

--
messages: 264836
nosy: sylvain.corlay
priority: normal
severity: normal
status: open
title: Implement equivalent to `pip.locations.distutils_scheme` in distutils
type: enhancement
versions: Python 3.6

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[issue26956] About Idle-x version not updated for 1.13

[Jeff Peters]

New submission from Jeff Peters:

The help| about idleX | popup  still lists  the version as 1.12  this  throws 
off the check for updats functionality

--
components: IDLE
messages: 264838
nosy: Jeff Peters
priority: normal
severity: normal
status: open
title: About Idle-x  version not updated for  1.13
versions: Python 3.4

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[issue26906] format(object.__reduce__) fails intermittently

[Guido van Rossum]

Guido van Rossum added the comment:

Serhiy, I'm happy to help, but I'm not sure what you're asking me to do. Decide 
between different patches? I can't even repro the issue.

--

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[issue26952] argparse help formatter crashes

[Endre]

Endre added the comment:

Hi,

Thanks for taking a look at it.
I have only tried it with argparse-1.4.0.

"I don't think add_mutually_exclusive_group and add_argument_group are designed 
to work together."

Yes, it really works strange in this case. I guess the framework should raise 
an exception which states that this use case is not supported, e.g. at the 
"serverGroup = mutexGroup.add_argument_group('serverGroup')
" line.

--

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[issue26952] argparse help formatter crashes

[Xiang Zhang]

Changes by Xiang Zhang :


--
nosy: +bethard

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[issue26952] argparse help formatter crashes

[Xiang Zhang]

Xiang Zhang added the comment:

I agree with Berker. Even without any exceptions, the help message given is not 
what add_argument_group and add_mutually_exclusive_group intend.

You can see

usage: argparse_test.py [-h] [--foo] -u URL -p PROJECT [--dump] --mergeInput
MERGEINPUT [--removeDisabled] -c CHECKERS

Sets the checkers of a klocwork project

optional arguments:
  -h, --helpshow this help message and exit
  --foo
  -c CHECKERS, --checkers CHECKERS
File which lists the checkers to be enabled.

There is not group name and still optional arguments. And the command line does 
not show exclusive. I believe they are not designed to work like this.

--

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[issue26943] Datetime.strptime crash

[SilentGhost]

SilentGhost added the comment:

Jens, the issue seems to be related to the locale under which your script is 
operating. You could try to ensure that the locale is suitable for the %b 
switch. In any case this doesn't look like a datetime bug.

--
nosy: +SilentGhost
resolution:  -> not a bug
stage:  -> resolved
status: open -> closed
type: crash -> behavior

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[issue26956] About Idle-x version not updated for 1.13

[SilentGhost]

Changes by SilentGhost :


--
nosy: +kbk, roger.serwy, terry.reedy
type:  -> behavior

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[issue26955] Implement equivalent to `pip.locations.distutils_scheme` in distutils

[SilentGhost]

Changes by SilentGhost :


--
components: +Distutils
nosy: +dstufft, eric.araujo

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[issue26696] Document collections.abc.ByteString

[Brett Cannon]

Changes by Brett Cannon :


--
assignee: docs@python -> brett.cannon

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[issue26943] datetime.datetime.strptime() raises an exception

[Brett Cannon]

Changes by Brett Cannon :


--
title: Datetime.strptime crash -> datetime.datetime.strptime() raises an 
exception

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[issue26946] os.path.realpath.__name__ is 'abspath'

[Brett Cannon]

Changes by Brett Cannon :


--
resolution:  -> not a bug
status: open -> closed

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[issue26945] difflib.HtmlDiff().make_file() treat few change as whole line change

[SilentGhost]

SilentGhost added the comment:

This seems to do with the percentage of affected characters, the threshold 
seems to be about a quarter. Not sure this is a bug.

--
nosy: +SilentGhost

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[issue26949] IDLE restarts when one debugs code raising SystemExit

[SilentGhost]

Changes by SilentGhost :


--
nosy: +kbk, roger.serwy, terry.reedy
stage:  -> test needed

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[issue26906] format(object.__reduce__) fails intermittently

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


Removed file: http://bugs.python.org/file42717/init_type_in_pytype_lookup.patch

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[issue26906] format(object.__reduce__) fails intermittently

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Added a check for Py_TPFLAGS_READYING to prevent recursive calling.

--
Added file: http://bugs.python.org/file42718/init_type_in_pytype_lookup.patch

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[issue26906] format(object.__reduce__) fails intermittently

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

The problem is that format() fails for instances of some classes, because the 
type still is not initialized. The simplest example -- list iterator.

>>> format(iter([]))
Traceback (most recent call last):
  File "", line 1, in 
TypeError: Type listiterator doesn't define __format__

After forcing type initialization (for example by getting any type's 
attribute), format() becomes working.

>>> type(iter([])).foo
Traceback (most recent call last):
  File "", line 1, in 
AttributeError: type object 'listiterator' has no attribute 'foo'
>>> format(iter([]))
''

I afraid that format() is just one example, and there are other functions or 
operators that don't work or work incorrectly if the type was not initialized.

init_types-2.7.patch adds explicit initialization of 38 types (I didn't check 
that all of them need this, but I suppose they do). This is large patch, and 
I'm not sure that it fixes all types.

Other way is to try to initialize the type just in _PyType_Lookup if it is not 
initialized. This is simple change, but a comment in _PyType_Lookup warns me. I 
found that this solution was already applied as an attempt to fix issue551412, 
but then reverted. Since you seem to be the most knowledgeable with this code, 
I'm asking you what was wrong with this approach and how we can fix this.

Python 3.x also suffers from this bug, but it is reproduced with less types. 
For example it isn't reproduced for list iterator. I don't know why.

--

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[issue26951] Unintuitive error when using generator expression in class property

[Mark Dickinson]

Mark Dickinson added the comment:

The outer for loop in a generator expression is evaluated immediately; 
everything after that is evaluated lazily. This was a deliberate design choice: 
see https://www.python.org/dev/peps/pep-0289/#early-binding-versus-late-binding 
for some rationale. This explains why you're able to access "B". The inability 
to access "C" is due to the usual rule for Python scope resolution: class 
scopes are skipped when examining nested scopes.

The early evaluation of the outermost for is covered in the docs, here: 
https://docs.python.org/2/reference/expressions.html#generator-expressions

"""
However, the leftmost for clause is immediately evaluated, so that an error 
produced by it can be seen before any other possible error in the code that 
handles the generator expression.
"""

So this behaviour is by design, though there may be a doc issue here. Changing 
components and versions accordingly.

--
assignee:  -> docs@python
components: +Documentation -Interpreter Core
nosy: +docs@python, mark.dickinson
versions: +Python 3.6 -Python 3.2, Python 3.3, Python 3.4

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[issue26811] segfault due to null pointer in tuple

[Roundup Robot]

Roundup Robot added the comment:

New changeset a98ef122d73d by Serhiy Storchaka in branch '3.5':
Issue #26811: gc.get_objects() no longer contains a broken tuple with NULL
https://hg.python.org/cpython/rev/a98ef122d73d

New changeset 3fe1c7ad3b58 by Serhiy Storchaka in branch 'default':
Issue #26811: gc.get_objects() no longer contains a broken tuple with NULL
https://hg.python.org/cpython/rev/3fe1c7ad3b58

--
nosy: +python-dev

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[issue26002] make statistics.median_grouped more efficient

[Roundup Robot]

Roundup Robot added the comment:

New changeset 7b2fafd78c1d by Steven D'Aprano in branch 'default':
Issue 26002 and 25974
https://hg.python.org/cpython/rev/7b2fafd78c1d

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[issue26957] Docs: remove duplicate "the" in description of `%z` in datetime docs

[Alex Chan]

New submission from Alex Chan:

The description of the `%z` format code in the datetime docs reads:

> UTC offset in the form +HHMM or -HHMM (empty string if the the object is 
> naive).

This tiny patch removes the second "the".

The current wording goes at least as far back as Python 2.6; see 
https://docs.python.org/2.6/library/datetime.html?highlight=datetime#strftime-and-strptime-behavior.

--
assignee: docs@python
components: Documentation
files: oneword.patch
keywords: patch
messages: 264848
nosy: alexwlchan, docs@python
priority: normal
severity: normal
status: open
title: Docs: remove duplicate "the" in description of `%z` in datetime docs
type: enhancement
Added file: http://bugs.python.org/file42719/oneword.patch

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[issue26926] Large files are not supported on Android

[Xavier de Gaye]

Xavier de Gaye added the comment:

Here is a patch that uses resource.setrlimit() to check whether large file may 
not be supported.

--
keywords: +patch
Added file: http://bugs.python.org/file42720/large_file.patch

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[issue26765] Factor out common bytes and bytearray implementation

[Roundup Robot]

Roundup Robot added the comment:

New changeset 41969033eb9d by Serhiy Storchaka in branch 'default':
Issue #26765: Moved common code and docstrings for bytes and bytearray methods
https://hg.python.org/cpython/rev/41969033eb9d

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[issue26958] Suggestion to imporve queue.full reliability

[Sudharsan R]

New submission from Sudharsan R:

I was browsing through the code for queue.full and queue.put methods. The 
queue.full method claims it is not a reliable one. But, the same internal 
implementation - _qsize is used for put as well as full. "put" is thread safe 
and reliable and "full" is not.
Why can't the full method acquire self.not_full instead of self.mutex, which 
will make both of the methods accurate at that instance of time?

def full(self):
"""Return True if the queue is full, False otherwise (not reliable!)."""
self.mutex.acquire()
n = 0 < self.maxsize == self._qsize()
self.mutex.release()
return n
def put(self, item, block=True, timeout=None):
"""Put an item into the queue.

If optional args 'block' is true and 'timeout' is None (the default),
block if necessary until a free slot is available. If 'timeout' is
a positive number, it blocks at most 'timeout' seconds and raises
the Full exception if no free slot was available within that time.
Otherwise ('block' is false), put an item on the queue if a free slot
is immediately available, else raise the Full exception ('timeout'
is ignored in that case).
"""
self.not_full.acquire()
try:
if self.maxsize > 0:
if not block:
if self._qsize() == self.maxsize:
raise Full

--
messages: 264851
nosy: Sudharsan R
priority: normal
severity: normal
status: open
title: Suggestion to imporve queue.full reliability
type: behavior
versions: Python 3.6

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[issue26958] Suggestion to imporve queue.full reliability

[SilentGhost]

Changes by SilentGhost :


--
components: +Library (Lib)
nosy: +rhettinger

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[issue26855] android: add platform.android_ver()

[Chi Hsuan Yen]

Chi Hsuan Yen added the comment:

Several questions on implementation:
1. Should Android 4.1 supported? If not pass_fds and logics for deriving it can 
be removed.
2. I can't find ro.build.version.full on any device/emulator I have access to. 
Maybe it should be removed due to low popularity?

Some related Android source codes, as my implementation basis:
1. Android 4.1's ANDROID_PROPERTY_WORKSPACE: 
https://android.googlesource.com/platform/bionic/+/android-4.1.1_r1/libc/bionic/system_properties.c#55
2. The Android Framework assumes property values to be valid UTF-8: 
https://android.googlesource.com/platform/frameworks/base/+/android-5.1.1_r37/core/jni/android_os_SystemProperties.cpp#49.
 In fact if I feed a malformed /system/build.prop to DalvikVM, it crashes [1]
3. Google's Android Compatibility Test Suite (CTS) [2] assumes `getprop` binary 
is in $PATH and can be executed: 
https://android.googlesource.com/platform/cts/+/android-5.1.1_r37/tests/tests/os/src/android/os/cts/BuildTest.java#110

[1] 
https://github.com/rave-engine/python3-android/pull/10#issuecomment-159390390
[2] https://source.android.com/compatibility/cts/

--
Added file: http://bugs.python.org/file42721/android_ver.patch

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[issue26958] Suggestion to imporve queue.full reliability

[Sudharsan R]

Sudharsan R added the comment:

Just add on to it..
q=queue.Queue()
with q.not_full:
q.put_nowait(1)

this will hang. So if we acquire the not_full while computing size, all puts 
will wait. Same is the case for q.empty() and q.not_empty method and condition 
respectively.

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[issue26855] android: add platform.android_ver()

[Marc-Andre Lemburg]

Marc-Andre Lemburg added the comment:

On 04.05.2016 21:47, Chi Hsuan Yen wrote:
> 1. Should Android 4.1 supported? If not pass_fds and logics for deriving it 
> can be removed.

According to http://www.droid-life.com/tag/distribution/ the Jelly
Bean versions (4.1, 4.2 and 4.3) still have a sizable market
share, so if it's not too much trouble, I think supporting 4.1 would
be a plus.

> 2. I can't find ro.build.version.full on any device/emulator I have access 
> to. Maybe it should be removed due to low popularity?

Agreed.

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[issue26918] android: test_pipes fails

[Xavier de Gaye]

Xavier de Gaye added the comment:

The attached patch fixes this.

--
keywords: +patch
Added file: http://bugs.python.org/file42722/no_tr_skipped.patch

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[issue26855] android: add platform.android_ver()

[Chi Hsuan Yen]

Chi Hsuan Yen added the comment:

Version 2 attached. Removed ro.build.version.full.

--
Added file: http://bugs.python.org/file42723/android_ver.patch

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[issue26765] Factor out common bytes and bytearray implementation

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


Added file: http://bugs.python.org/file42724/bytes_methods_stage2.patch

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[issue26765] Factor out common bytes and bytearray implementation

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Here is the second part of the patch. It moves common code for replace() method 
to template file Objects/stringlib/transmogrify.h.

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[issue26957] Docs: remove duplicate "the" in description of `%z` in datetime docs

[Roundup Robot]

Roundup Robot added the comment:

New changeset 580ddeccd689 by Berker Peksag in branch '3.5':
Issue #26957: Remove duplicate 'the' from datetime documentation
https://hg.python.org/cpython/rev/580ddeccd689

New changeset 3a069e5593ef by Berker Peksag in branch 'default':
Issue #26957: Remove duplicate 'the' from datetime documentation
https://hg.python.org/cpython/rev/3a069e5593ef

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[issue26957] Docs: remove duplicate "the" in description of `%z` in datetime docs

[Berker Peksag]

Berker Peksag added the comment:

Thanks!

--
nosy: +berker.peksag
resolution:  -> fixed
stage:  -> resolved
status: open -> closed
type: enhancement -> behavior
versions: +Python 3.5, Python 3.6

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[issue26893] ValueError exception raised when using IntEnum with an attribute called "name" and @unique decorator

[Berker Peksag]

Changes by Berker Peksag :


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

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[issue26918] android: test_pipes fails

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Is tr not available on Android?! I would suggest to use sed instead, but I 
afraid sed is not available too. What commands are available at all?

--
nosy: +serhiy.storchaka

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[issue26949] IDLE restarts when one debugs code raising SystemExit

[Terry J. Reedy]

New submission from Terry J. Reedy:

To be more specific: if one runs a file, the shell is restarted (with the file 
name).  In the file, raise SystemExit is normally the same as running off the 
end of the file, and a prompt is printed.  If one runs a file with debugger on, 
[DEBUG ON] is printed before the prompt.  However, SystemExit while debugging 
causes a Restart Shell before the [DEBUG ON] and >>> prompt.  The 2nd restart 
does not normally happen when debugging finishes.  It does not happen when any 
other exception is raised; instead a traceback is printed as normal.

This is a minor bug, but it does prevent interactive examination of the process 
after debugging.

There is special code in run.py to catch SystemExit and not print a traceback.  
My guess in a bug in RemoteDebugger.py that causes (allows) the execution 
process to exit or otherwise get detached from the IDLE process.  When the IDLE 
process loses contact with the current execution process, it starts a new one.

--

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[issue26956] About Idle-x version not updated for 1.13

[Terry J. Reedy]

Changes by Terry J. Reedy :


--
stage:  -> resolved

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[issue26956] About Idle-x version not updated for 1.13

[Terry J. Reedy]

Terry J. Reedy added the comment:

This is the wrong tracker for this report.  Idle-X is a 3rd party IDLE 
extension maintained elsewhere.

--
resolution:  -> third party
status: open -> closed

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