[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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[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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[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:

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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[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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[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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[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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[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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[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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[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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[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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[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

[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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[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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[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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[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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[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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[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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[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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[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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[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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[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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[issue26958] Suggestion to imporve queue.full reliability

[Raymond Hettinger]

Raymond Hettinger added the comment:

The reliability issue for qsize(), empty(), and full() has nothing to do with 
their implementations.  The problem is that any information obtained by those 
methods is potentially out-of-date by the time you try to use it (the LBYL 
problem).  This is why multi-threaded programmers prefer (try: os.remove(fn) 
except OSError: pass) over (if os.path.exists(fn): os.remove(fn)) where the 
latter has an intrinsic race condition regardless of the implementation of 
os.path.exists().

One other note, self.not_full uses self.mutex internally.  There is only one 
underlying lock for the whole queue implementation.

Lastly, despite not having an underscore prefix in its name, q.not_full() is 
not part of the public API.  Your "it hangs" example is part of the reason why 
;-)

In general, don't use full and empty tests to decide whether or not to do a put 
or get.  Instead, just try the put or get directly and catch the exception if 
queue turns out to be full or empty.

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

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[issue26949] IDLE restarts when one debugs code raising SystemExit

[Terry J. Reedy]

Terry J. Reedy added the comment:

Thanks, that may make debugging this (and creating a test) easier.  I have only 
seriously used debugger with files, and often with breakpoints in the file.

--
versions: +Python 3.5, Python 3.6 -Python 3.4

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[issue26960] urllib hangs when closing connection

[Chris Beaumont]

New submission from Chris Beaumont:

http://bugs.python.org/issue16270 identified an issue with 
ftpwrapper.endtransfer that causes ftp fetches to hang in certain situations. A 
fix was applied to python 3. I see the same issue on python 2.7, and the patch 
from 16270 fixes it. Is there a reason this fix hasn't been backported to 2.7?

To reproduce:

import urllib
url = "ftp://ftp.fu-berlin.de/pub/misc/movies/database/ratings.list.gz;
fp = urllib.urlopen(url)
fp.close()  # hangs

--
components: Library (Lib)
messages: 264868
nosy: Chris Beaumont, giampaolo.rodola
priority: normal
severity: normal
status: open
title: urllib hangs when closing connection
versions: Python 2.7

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

[Nick Coghlan]

Nick Coghlan added the comment:

No objections from me (and I don't have anything to add to Serhiy's comments on 
the code review)

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[issue26765] Factor out common bytes and bytearray implementation

[Meador Inge]

Meador Inge added the comment:

LGTM.

--

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[issue26002] make statistics.median_grouped more efficient

[Steven D'Aprano]

Changes by Steven D'Aprano :


--
stage: patch review -> commit review

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[issue26960] urllib hangs when closing connection

[Chris Beaumont]

Changes by Chris Beaumont :


--
keywords: +patch
Added file: http://bugs.python.org/file42728/urllib.patch

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[issue26881] modulefinder should reuse the dis module

[Meador Inge]

Meador Inge added the comment:

Overall, this patch LGTM.  Some new tests would be nice.  Especially since the 
NEWS entry claims that we now support extended args.

As for for the compatibility concerns, I don't know.

--
nosy: +meador.inge

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[issue25770] expose name, args, and kwargs from methodcaller

[Joe Jevnik]

Joe Jevnik added the comment:

people have had some time to think about this, whats should the name be so we 
can merge this?

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[issue26959] pickle: respect dispatch for functions again

[Vsevolod Velichko]

New submission from Vsevolod Velichko:

The commit [2] removed support for handling unpicklable functions with copyreg 
override from cpickle due to lack of the same feature in pickle.
This patch restores that feature and adds the support of it to pickle.

[1] Original discussion: 
https://mail.python.org/pipermail/python-dev/2016-May/144426.html
[2] https://hg.python.org/cpython/rev/6bd1f0a27e8e

--
components: Extension Modules
files: function_pickle.patch
keywords: patch
messages: 264866
nosy: torkve
priority: normal
severity: normal
status: open
title: pickle: respect dispatch for functions again
type: behavior
versions: Python 3.6
Added file: http://bugs.python.org/file42727/function_pickle.patch

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[issue25724] SSLv3 test failure on Ubuntu 16.04 LTS

[Xiang Zhang]

Xiang Zhang added the comment:

Ubuntu 16.04 has came out and test_ssl fails. I already opened a issue about 
it. See issue26867.

--
nosy: +xiang.zhang

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[issue26961] Add operator.get_providing_type

[Nick Coghlan]

New submission from Nick Coghlan:

Prompted by a discussion with Doug Hellmann, I'd like to suggest exposing some 
of the descriptor MRO walking logic as "operator.get_providing_type".

Specifically, where "getattr(obj, 'attrname')" performs a full attribute lookup 
and "getattr(type(obj), 'attrname'), performs a type-only attribute lookup, 
"operator.get_providing_type(obj, 'attrname')" would perform an attribute 
lookup in the vein of _PyType_Lookup, but report the *type* containing the 
relevant descriptor, rather than fulling resolving the descriptor protocol.

This would be intended primarily as a debugging aid, for cases where a super() 
call is reporting an error, but it isn't clear which particular mixin class is 
failing, and the traceback isn't providing sufficient detail to figure it out 
(e.g. due to C functions in the call chain).

--
messages: 264869
nosy: doughellmann, ncoghlan
priority: normal
severity: normal
status: open
title: Add operator.get_providing_type

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[issue26961] Add operator.get_providing_type

[Nick Coghlan]

Changes by Nick Coghlan :


--
versions: +Python 3.6

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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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[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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[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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[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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[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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[issue26952] argparse help formatter crashes

[Xiang Zhang]

Changes by 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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[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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[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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[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.

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

[Xiang Zhang]

Changes by Xiang Zhang :


--
nosy: +xiang.zhang

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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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[issue26947] Documentation improvement needed

[Xiang Zhang]

Xiang Zhang added the comment:

As a non-native speaker, actually I prefer the original one. But both versions 
lead to no confusion for me.

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[issue26961] Add operator.get_providing_type

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Could you please provide an example of using get_providing_type? If this is 
intended primarily as a debugging aid, I think the inspect module is better 
place than the operator module. I don't know wherever this functionality is 
already provided by the inspect module.

--
nosy: +serhiy.storchaka

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[issue26961] Provide an API to help debug super().__getattribute__ results

[Nick Coghlan]

Nick Coghlan added the comment:

The main reason for suggesting operator is that it needs to be in an extension 
module if it's going to share the underlying lookup algorithm used by 
super().__getattribute__ rather than reimplementing it.

I'm not particularly concerned about the exact API name though, so I changed 
the title of the issue to explain the problem to be solved, rather than to 
propose a particular solution.

Doug, could you provide a specific example of the cryptic traceback that 
started the discussion?

--
title: Add operator.get_providing_type -> Provide an API to help debug 
super().__getattribute__ results

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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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[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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[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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[issue26696] Document collections.abc.ByteString

[Brett Cannon]

Changes by Brett Cannon :


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

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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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[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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[issue26952] argparse help formatter crashes

[Xiang Zhang]

Changes by Xiang Zhang :


--
nosy: +bethard

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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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[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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[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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[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.

--
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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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[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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[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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[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

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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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[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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[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.

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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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[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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[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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[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?

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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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[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

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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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[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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