[issue17100] rotating an ordereddict

[Antoine Pitrou]

Antoine Pitrou added the comment:

> It is trivial.
> 
> def rotate(od, n):
> for i in range(n):
> k, v = od.popitem(False)
> od[k] = v

That's O(n), with many spurious insertions and deletions.

> And those functions look too specialized.

How so? rotating sounds quite generic to me. deques already allow
rotating.

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[issue17102] tarfile extract can write files outside the destination path

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


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[issue16601] Restarting iteration over tarfile continues from where it left off.

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Michael, what's the status of your contributor form?

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[issue17100] rotating an ordereddict

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

It is trivial.

def rotate(od, n):
for i in range(n):
k, v = od.popitem(False)
od[k] = v

And those functions look too specialized.

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[issue15587] IDLE is pixelated on the Macbook Pro with Retina Display

[Ned Deily]

Ned Deily added the comment:

I've updated the plists for both IDLE.app and the framework Python.app to 
enable the high-resolution rendering.  That should affect IDLE.app and bin/idle 
and any other Tkinter-based program, as long as they all are being run from a 
framework build of Python such as provided by the python.org OS X installers.  
Again, since I don't have access to a Retina display Mac, I cannot test the 
changes myself.  The fixes will appear in the upcoming 2.7.4 and 3.2.4 releases 
as well as 3.3.1 and 3.4.0.  It would be nice if someone with a Retina Mac 
could install one or both of the release candidates for 2.7.4 and 3.2.4 when 
available and report the results of testing.

--
resolution:  -> fixed
stage: needs patch -> committed/rejected
status: open -> pending
type: enhancement -> behavior
versions: +Python 3.4

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[issue13192] ImportError silences low-level OS errors

[Antoine Pitrou]

Antoine Pitrou added the comment:

In 3.3 and 3.4, exceptions are not silenced anymore:

>>> import resource
>>> resource.setrlimit(resource.RLIMIT_NOFILE, (2, 100))
>>> import encodings.idna
Traceback (most recent call last):
  File "", line 1, in 
  File "", line 1584, in _find_and_load
  File "", line 1551, in _find_and_load_unlocked
  File "", line 586, in _check_name_wrapper
  File "", line 1049, in load_module
  File "", line 1030, in load_module
  File "", line 562, in module_for_loader_wrapper
  File "", line 883, in _load_module
  File "", line 1008, in get_code
  File "", line 1058, in get_data
OSError: [Errno 24] Too many open files: 
'/home/antoine/cpython/default/Lib/encodings/idna.py'


Given that fixing the issue in bugfix branches would be a slight behaviour 
change, I think we can close this issue.

--
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versions: +Python 2.7 -Python 3.3

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[issue15587] IDLE is pixelated on the Macbook Pro with Retina Display

[Roundup Robot]

Roundup Robot added the comment:

New changeset 2274f3196a44 by Ned Deily in branch '2.7':
Issue #15587: Enable Tk high-resolution text rendering on Macs with
http://hg.python.org/cpython/rev/2274f3196a44

New changeset 7dfd84021494 by Ned Deily in branch '3.2':
Issue #15587: Enable Tk high-resolution text rendering on Macs with
http://hg.python.org/cpython/rev/7dfd84021494

New changeset 8fbab6648309 by Ned Deily in branch '3.3':
Issue #15587: merge from 3.2
http://hg.python.org/cpython/rev/8fbab6648309

New changeset d8dcf87b8e49 by Ned Deily in branch 'default':
Issue #15587: merge from 3.3
http://hg.python.org/cpython/rev/d8dcf87b8e49

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[issue17102] tarfile extract can write files outside the destination path

[Ralf Schmitt]

Changes by Ralf Schmitt :


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[issue13124] Add "Running a Build Slave" page to the devguide

[Eric Snow]

Eric Snow added the comment:

Yeah, at some point I will. :)  I've been pretty focused on implementing a 
C-OrderedDict, which I'm (hopefully) wrapping up pretty soon.  Once that 
happens I'm going to revisit a bunch of the open tickets I have.  If you want 
to push this sooner than that, feel free. :)

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[issue13192] ImportError silences low-level OS errors

[Eric Snow]

Eric Snow added the comment:

Are you thinking of issue 15833?

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[issue17097] multiprocessing BaseManager serve_client() does not check EINTR on recv

[Gregory P. Smith]

Changes by Gregory P. Smith :


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multiprocessing BaseManager serve_client() does not check EINTR on recv

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[issue6972] zipfile.ZipFile overwrites files outside destination path

[Gregory P. Smith]

Gregory P. Smith added the comment:

yes, tarfile appears to have the same problem.  
http://bugs.python.org/issue17102 filed.

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[issue17102] tarfile extract can write files outside the destination path

[Gregory P. Smith]

New submission from Gregory P. Smith:

Create a malicious .tar file with entries containing absolute or relative paths 
and the tarfile module happily uses them as is without sanity checking.

filed in response to http://bugs.python.org/issue6972 which fixed the zipfile 
module for this.

I'm attaching an example tar file to demonstrate this (safely) but much worse 
things could obviously be done.

--
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messages: 181133
nosy: gregory.p.smith
priority: high
severity: normal
status: open
title: tarfile extract can write files outside the destination path
type: security
versions: Python 2.7, Python 3.2, Python 3.3, Python 3.4
Added file: http://bugs.python.org/file28931/absolute_path.tar

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[issue17100] rotating an ordereddict

[Ramchandra Apte]

Ramchandra Apte added the comment:

Will attach patch when I get free (10 hours from now)

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[issue17083] can't specify newline string for readline for binary files

[Antoine Pitrou]

Antoine Pitrou added the comment:

I think readline() is quite clear in its current intent (it reads a line, which 
conventionally is delimited by '\n').
We mau want to add another method, say read_until_delimiter(), but it's not the 
same as readline() ;-) I think it would be best for it to be discussed, say on 
python-ideas (*), before any decision is made.

(*) http://mail.python.org/mailman/listinfo/python-ideas

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[issue16256] permissions wrong on Mac doc dir

[Christopher Barker]

Christopher Barker added the comment:

On Fri, Feb 1, 2013 at 2:08 PM, Ned Deily  wrote:
> Thanks for the report and the patch.  Committed for 2.7.4, 3.2.4, and 3.3.1.

Did I actually submit a patch? but thanks to you for getting it done
-- and all else you do for pythonmac.

-Chris

> --
> resolution:  -> fixed
> stage:  -> committed/rejected
> status: open -> closed
> versions: +Python 3.2, Python 3.3, Python 3.4
>
> ___
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[issue8754] quote bad module name in ImportError-like messages

[Éric Araujo]

Éric Araujo added the comment:

Great!

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[issue15369] pybench and test.pystone poorly documented

[Brett Cannon]

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[issue10342] trace module cannot produce coverage reports for zipped modules

[Brett Cannon]

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[issue15344] devinabox: failure when running make_a_box multiple times

[Brett Cannon]

Brett Cannon added the comment:

Since you got this with a clean run and I had dev_in_a_box.py work for me in 
November I'm closing this.

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[issue4011] Create DAG for PEP 101

[Brett Cannon]

Brett Cannon added the comment:

Would this still be useful to do? Thanks to my latest import talk I have 
experience with graphviz but I don't want to waste my time if people don't need 
it.

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[issue12937] distutils2: install action should support same options as install command

[Brett Cannon]

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[issue14724] kill imp.load_dynamic's third argument

[Brett Cannon]

Brett Cannon added the comment:

Turns out this was used in the wild and has now been fixed to be useful. =)

--
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status: open -> closed
superseder:  -> importlib.machinery.ExtensionFileLoader cannot load several 
modules from the same shared object

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[issue14689] make PYTHONWARNINGS variable work in libpython

[Brett Cannon]

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[issue13473] Add tests for files byte-compiled by distutils[2]

[Brett Cannon]

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[issue12598] Move sys variable initialization from import.c to sysmodule.c

[Brett Cannon]

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[issue14580] imp.reload can fail for sub-modules

[Brett Cannon]

Brett Cannon added the comment:

This is no longer a problem:

>>> import imp
>>> import collections
>>> import collections.abc


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[issue13306] Add diagnostic tools to importlib?

[Nick Coghlan]

Nick Coghlan added the comment:

I still think it would be a good feature to offer, but have no plans to
write it myself.

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[issue11085] expose _abcoll as collections.abc

[Brett Cannon]

Brett Cannon added the comment:

I'm closing this again as 3.3 actually starts up faster than 3.2 thanks to 
importlib so this slowdown is no longer noticeable.

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[issue14285] Traceback wrong on ImportError while executing a package

[Brett Cannon]

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[issue16256] permissions wrong on Mac doc dir

[Ned Deily]

Ned Deily added the comment:

Thanks for the report and the patch.  Committed for 2.7.4, 3.2.4, and 3.3.1.

--
resolution:  -> fixed
stage:  -> committed/rejected
status: open -> closed
versions: +Python 3.2, Python 3.3, Python 3.4

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[issue12919] Control what module is imported first

[Brett Cannon]

Brett Cannon added the comment:

This would tie into PEP 432 at this point.

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[issue8754] quote bad module name in ImportError-like messages

[Brett Cannon]

Brett Cannon added the comment:

Over time I have fixed this issue in various patches.

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[issue16256] permissions wrong on Mac doc dir

[Roundup Robot]

Roundup Robot added the comment:

New changeset d64e0cf5f1a7 by Ned Deily in branch '2.7':
Issue #16256: OS X installer now sets correct permissions for doc directory.
http://hg.python.org/cpython/rev/d64e0cf5f1a7

New changeset e8a1b5757067 by Ned Deily in branch '3.2':
Issue #16256: OS X installer now sets correct permissions for doc directory.
http://hg.python.org/cpython/rev/e8a1b5757067

New changeset 1db5ed6a2dc2 by Ned Deily in branch '3.3':
Issue #16256: merge from 3.2
http://hg.python.org/cpython/rev/1db5ed6a2dc2

New changeset bc2c40e84b58 by Ned Deily in branch 'default':
Issue #16256: merge from 3.3
http://hg.python.org/cpython/rev/bc2c40e84b58

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[issue4010] configure options don't trickle down to distutils

[Brett Cannon]

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[issue13124] Add "Running a Build Slave" page to the devguide

[Brett Cannon]

Brett Cannon added the comment:

Did you want to commit this patch yourself, Eric, since you have commit privs 
now?

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[issue13829] exception error in _scproxy.so

[Brett Cannon]

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[issue13819] _warnings settings are process-wide

[Brett Cannon]

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[issue8623] Aliasing warnings in socketmodule.c

[Brett Cannon]

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[issue13306] Add diagnostic tools to importlib?

[Brett Cannon]

Brett Cannon added the comment:

Did you still plan to write this code, Nick? Or were you just thinking about 
loud and don't need this bug here anymore?

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[issue13184] Multi-layered symlinks to python cause runtime error. sys.path is malformed.

[Brett Cannon]

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[issue13192] ImportError silences low-level OS errors

[Brett Cannon]

Brett Cannon added the comment:

Is this still an issue in (at least) 3.4 with the new I/O exceptions? And I 
feel like there was another bug about this.

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[issue17093] Make importlib.abc more inheritance-friendly

[Brett Cannon]

Brett Cannon added the comment:

And as part of this I need to update the docstrings to mention default 
reactions.

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[issue17098] Set __loader__ on modules imported by the C level

[Thomas Heller]

Thomas Heller added the comment:

Thanks for the very fast fix Brett :-)

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[issue17098] Set __loader__ on modules imported by the C level

[Thomas Heller]

Thomas Heller added the comment:

I confirm that the bug is fixed, my test-code works now (a modulefinder using 
importlib instead of imp to find modules).

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[issue17093] Make importlib.abc more inheritance-friendly

[Brett Cannon]

Brett Cannon added the comment:

OK, rewrote that blog post as Thomas pointed out my thinking was worrying about 
stuff I shouldn't be: 
http://sayspy.blogspot.ca/2013/02/remember-to-use-super-in-your-abcs.html

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[issue17098] Set __loader__ on modules imported by the C level

[Brett Cannon]

Brett Cannon added the comment:

OK, 3.3 and 3.4 now have tests and verify everything is working fine.

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[issue17098] Set __loader__ on modules imported by the C level

[Roundup Robot]

Roundup Robot added the comment:

New changeset 4a4688b865ff by Brett Cannon in branch '3.3':
Add a test for fix of issue #17098
http://hg.python.org/cpython/rev/4a4688b865ff

New changeset 19ea454ccdf7 by Brett Cannon in branch '3.3':
Issue #17098: Be more stringent of setting __loader__ on early imported
http://hg.python.org/cpython/rev/19ea454ccdf7

New changeset 306f066e6a33 by Brett Cannon in branch 'default':
Merge w/ 3.3 more fixes thanks to issue #17098
http://hg.python.org/cpython/rev/306f066e6a33

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[issue12268] file readline, readlines & readall methods can lose data on EINTR

[Gregory P. Smith]

Changes by Gregory P. Smith :


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[issue12268] file readline, readlines & readall methods can lose data on EINTR

[Gregory P. Smith]

Gregory P. Smith added the comment:

it was easier to just take care of auditing the write calls as part of this 
given the code change was directly related to it.

On Python 2.7 most of the write calls in the builtin file object 
(Objects/fileobject.c) rather than the new io module use the libc fwrite() call 
which, in linux man pages at least, is non-specific about what happens on EINTR 
(does it retry internally or does it return the number of bytes written so 
far?).  Those could well abort leading to an error.

Setting up a testcase fo to confirm that with is painful (time consuming) so I 
can't claim the non io module based write's do not still have an EINTR issue on 
2.7.

Workaround: Use the io module instead of the builtin open() or file() calls in 
Python 2.7.

If someone can confirm that with a test case, it'd make another good issue to 
open.

As for the writev comment... go ahead. :)

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[issue12268] file readline, readlines & readall methods can lose data on EINTR

[STINNER Victor]

STINNER Victor added the comment:

Oh, so we can now implement a version of writelines() using writev()!

2013/2/1 Roundup Robot :
>
> Roundup Robot added the comment:
>
> New changeset a5e7b38caee2 by Gregory P. Smith in branch '2.7':
> Additional fix for Issue #12268: The io module file object writelines() 
> methods
> http://hg.python.org/cpython/rev/a5e7b38caee2
>
> New changeset 2fd669aa4abc by Gregory P. Smith in branch '3.2':
> Additional fix for Issue #12268: The io module file object writelines() 
> methods no longer abort early when one of its write system calls is 
> interrupted (EINTR).
> http://hg.python.org/cpython/rev/2fd669aa4abc
>
> New changeset 30fc620e240e by Gregory P. Smith in branch '3.3':
> Additional fix for issue #12268: The io module file object write methods no
> http://hg.python.org/cpython/rev/30fc620e240e
>
> New changeset 8f72519fd0e9 by Gregory P. Smith in branch 'default':
> Additional fix for issue #12268: The io module file object write methods no
> http://hg.python.org/cpython/rev/8f72519fd0e9
>
> --
>
> ___
> Python tracker 
> 
> ___

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[issue12268] file readline, readlines & readall methods can lose data on EINTR

[Roundup Robot]

Roundup Robot added the comment:

New changeset a5e7b38caee2 by Gregory P. Smith in branch '2.7':
Additional fix for Issue #12268: The io module file object writelines() methods
http://hg.python.org/cpython/rev/a5e7b38caee2

New changeset 2fd669aa4abc by Gregory P. Smith in branch '3.2':
Additional fix for Issue #12268: The io module file object writelines() methods 
no longer abort early when one of its write system calls is interrupted (EINTR).
http://hg.python.org/cpython/rev/2fd669aa4abc

New changeset 30fc620e240e by Gregory P. Smith in branch '3.3':
Additional fix for issue #12268: The io module file object write methods no
http://hg.python.org/cpython/rev/30fc620e240e

New changeset 8f72519fd0e9 by Gregory P. Smith in branch 'default':
Additional fix for issue #12268: The io module file object write methods no
http://hg.python.org/cpython/rev/8f72519fd0e9

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[issue6972] zipfile.ZipFile overwrites files outside destination path

[Ralf Schmitt]

Ralf Schmitt added the comment:

does anyone know if the same issue has been fixed in the tarfile module?

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[issue17098] Set __loader__ on modules imported by the C level

[Thomas Heller]

Thomas Heller added the comment:

I have only tried my code with 3.4; but still get problems with the modules 
'builtins' and '_frozenimportlib'.

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[issue17100] rotating an ordereddict

[Eric Snow]

Changes by Eric Snow :


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[issue17083] can't specify newline string for readline for binary files

[R. David Murray]

R. David Murray added the comment:

Well, it's a feature by our policy, since it currently works as documented.

Probably the first thing would be to get the opinion of someone who works on 
the IO module, so I've nosied Antoine.  Note that this was obviously a 
conscious design decision, as it is documented clearly.

Another possible first step is the one I suggested: posting a recipe on the 
recipe site and seeing if there is any uptake.  Python-ideas would be another 
option.  For this level of change, I don't believe a PEP is required :)

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[issue17098] Set __loader__ on modules imported by the C level

[Eric Snow]

Changes by Eric Snow :


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[issue6972] zipfile.ZipFile overwrites files outside destination path

[Gregory P. Smith]

Changes by Gregory P. Smith :


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

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[issue17098] Set __loader__ on modules imported by the C level

[Brett Cannon]

Brett Cannon added the comment:

Looks like I spoke too soon. I realized I had not written a test so I did it 
quickly and it turns out that while this is fixed for 3.3 it isn't for 3.4.

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[issue6972] zipfile.ZipFile overwrites files outside destination path

[Roundup Robot]

Roundup Robot added the comment:

New changeset 0c5fa35c9f12 by Gregory P. Smith in branch '3.2':
Fixes Issue #6972: The zipfile module no longer overwrites files outside of
http://hg.python.org/cpython/rev/0c5fa35c9f12

New changeset 483488a1dec5 by Gregory P. Smith in branch '3.3':
Fixes Issue #6972: The zipfile module no longer overwrites files outside of
http://hg.python.org/cpython/rev/483488a1dec5

New changeset 249e0b47b686 by Gregory P. Smith in branch 'default':
Fixes Issue #6972: The zipfile module no longer overwrites files outside of
http://hg.python.org/cpython/rev/249e0b47b686

New changeset 4d1948689ee1 by Gregory P. Smith in branch '2.7':
Fixes Issue #6972: The zipfile module no longer overwrites files outside of
http://hg.python.org/cpython/rev/4d1948689ee1

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[issue17083] can't specify newline string for readline for binary files

[Bryant]

Bryant added the comment:

While my original description of this issue discussed arbitrary strings, I'd 
like to limit the scope of this issue down to just supporting the newline 
parameter to builtin.open() for binary files, just as it's supported for 
regular files. This adds no real new functionality, just makes the treatment of 
the concept of a "line" consistent between binary files and regular text files, 
since that concept *does* exist in many cases in binary files.

Given that everyone here seems to think this is at least reasonable at this 
point, what would the next step be given this is somewhere between a library 
fix and a feature addition? I haven't contributed to Python before, but the 
developer FAQ mentions either python-ideas or a PEP, or should this move right 
towards a patch?

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[issue17083] can't specify newline string for readline for binary files

[R. David Murray]

R. David Murray added the comment:

Anything we do here is a new feature.

I have no objection to adding features in this area myself, but I will note 
that I was shot down for proposing (in another issue) that the newline 
attribute for text files be allowed to be an arbitrary string.

--
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[issue17083] can't specify newline string for readline for binary files

[Glenn Linderman]

Glenn Linderman added the comment:

I think Bryant's request is reasonable, for consistency in functionality. If 
line oriented operations are allowed on binary files, then a binary newline 
value should be permitted at the time of open.

I think, for handling binary files, that it would also be interesting to have a 
version of readline that takes a binary newline file as a parameter to each 
readline call, because in binary files, the concept of newline can vary from 
section to section of the file... here, null-terminated records, there CR LF 
terminated encoded text records, elsewhere fixed-length records, and another 
place might have records delimited by some binary token of one or more bytes.  
Readline with a newline parameter could be useful in three of those cases, read 
in the fixed-length case.  But this paragraph would be a new feature.

However, simpler binary files, which may have only one type of "terminated" 
records, could effectively use the operations Bryant is suggesting, which seems 
quite reasonable to me, along with a mix of read calls for non-delimited data, 
fixed-length data, or data requiring complex logic to decode.

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[issue16555] Add es_cu to locale aliases

[Éric Araujo]

Éric Araujo added the comment:

I have a busy week-end ahead but I could sneak a little time for this.

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[issue17099] Raise ValueError when __loader__ not defined for importlib.find_loader()

[Eric Snow]

Changes by Eric Snow :


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[issue17035] Use new style classes in {class, static}method examples

[Éric Araujo]

Éric Araujo added the comment:

LGTM.

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stage:  -> patch review

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[issue17098] Set __loader__ on modules imported by the C level

[Brett Cannon]

Brett Cannon added the comment:

OK, so my solution for signal worked. All fixed now. If any other modules pop 
up with __loader__ not set from now on it's because they cheated on import. =)

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

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[issue17098] Set __loader__ on modules imported by the C level

[Roundup Robot]

Roundup Robot added the comment:

New changeset 05747d3bcd9c by Brett Cannon in branch '3.3':
Issue #17098: Make sure every module has __loader__ defined.
http://hg.python.org/cpython/rev/05747d3bcd9c

New changeset 1f1a1b3cc416 by Brett Cannon in branch 'default':
Issue #17098: all modules should have __loader__
http://hg.python.org/cpython/rev/1f1a1b3cc416

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[issue17069] HTTP result code in urllib2.urlopen() file object undocumented

[Senthil Kumaran]

Changes by Senthil Kumaran :


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[issue14468] Update cloning guidelines in devguide

[Ezio Melotti]

Ezio Melotti added the comment:

Because this is a patch for the devguide, so we cannot use Rietveld for the 
review.

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[issue17069] HTTP result code in urllib2.urlopen() file object undocumented

[Éric Araujo]

Changes by Éric Araujo :


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[issue17078] string.Template.safe_substitute hard-wires "braces" as {}

[Éric Araujo]

Éric Araujo added the comment:

Barry, I read that passage in the PEP to explain why the default style uses 
${}, but the bug here is about a Template class with an overriden placeholder 
pattern.

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[issue13756] Python3.2.2 make fail on cygwin

[Jason Tishler]

Jason Tishler added the comment:

> Is this still an issue on 3.3/3.4?

I presume so.

> Does the patch still work?

I haven't tried it on 3.3 yet, so I don't know if it will apply cleanly.

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[issue17098] Set __loader__ on modules imported by the C level

[Brett Cannon]

Brett Cannon added the comment:

All cases but signal can be fixed by importlib._bootstrap._setup() by simply 
iterating over sys.modules and setting __loader__. Nice and simple. Thanks, 
abstraction!

The problem is signal who gives the finger to abstraction. That module gets 
imported directly by C code which cheats by calling PyInit_signal() directly 
and then calling _PyImport_FixupBuiltin(). I tried setting __loader__ in there 
but I'm actually triggering a segfault in PyErr_Format()! This is probably 
because I/O streams are not set up yet at this point in interpreter startup. 
Anyway, I'm trying to simply not have the code cheat and instead just import 
the signal module through the proper abstractions.

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[issue17101] __main__.py Multiprocessing on Windows

[Philip Thiem]

Changes by Philip Thiem :


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title: Multiprocessing on Windows -> __main__.py Multiprocessing on Windows

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[issue17101] Multiprocessing on Windows

[Philip Thiem]

New submission from Philip Thiem:

http://bugs.python.org/issue10845 also applies to the 2.X series.

this is multiprocessing on windows has issues with __main__.py

--
components: Windows
messages: 181090
nosy: pthiem
priority: normal
severity: normal
status: open
title: Multiprocessing on Windows
type: behavior
versions: Python 2.6, Python 2.7

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[issue8094] Multiprocessing infinite loop

[Philip Thiem]

Philip Thiem added the comment:

Actually sorry, now that I reread the details a second time, I'm not sure that 
is this the same deal.  I'll just file a separate bug.

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[issue8094] Multiprocessing infinite loop

[Philip Thiem]

Philip Thiem added the comment:

As an alternative, see http://bugs.python.org/issue10845

It contains a patch for the 3.X series which fixes the infinity loop.

Applying it to the 2.X series will fix the issue and make a change the 
documentation unnecessary.

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[issue12502] 100% cpu usage when using asyncore with UNIX socket

[Benjamin Ash]

Benjamin Ash added the comment:

Hi,

I am still seeing this issue even with the patches applied. I see 100% CPU 
utilization, and strace shows the process is in same kind of select() loop as 
msg139899.

Any help would be greatly appreciated.

Thanks,

-ben

strace output:
"""
select(4, [3], [3], [3], {30, 0})   = 1 (out [3], left {29, 98})
select(4, [3], [3], [3], {30, 0})   = 1 (out [3], left {29, 98})
select(4, [3], [3], [3], {30, 0})   = 1 (out [3], left {29, 98})
select(4, [3], [3], [3], {30, 0})   = 1 (out [3], left {29, 98})
"""

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[issue17100] rotating an ordereddict

[Antoine Pitrou]

New submission from Antoine Pitrou:

It can be useful to rotate an OrderedDict (for example when managing a circular 
playlist). I haven't found any efficient way to do so from user code, without 
poking at the internals.

Actually, I envision three methods:

 OrderedDict.rotate(self, n):

   rotate n steps to the right (similarly to deque.rotate())

 OrderedDict.rotate_at(self, key):

   rotate so that the given key ends up in first position

 OrderedDict.rotate_after(self, key):

   rotate so that the given key ends up in last position

(rotate_at, rotate_after could be merged in a single method with a "last" 
argument, if deemed more elegant)

Note: another solution to the playlist problem would be to have insert_after() 
and insert_before() methods.

--
messages: 181086
nosy: pitrou, rhettinger
priority: normal
severity: normal
status: open
title: rotating an ordereddict
type: enhancement
versions: Python 3.4

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[issue17093] Make importlib.abc more inheritance-friendly

[Brett Cannon]

Brett Cannon added the comment:

Blog post I wrote explaining what I plan to do: 
http://sayspy.blogspot.ca/2013/02/remember-to-use-super-in-your-abcs.html

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[issue17099] Raise ValueError when __loader__ not defined for importlib.find_loader()

[Brett Cannon]

Changes by Brett Cannon :


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keywords: +easy

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[issue17099] Raise ValueError when __loader__ not defined for importlib.find_loader()

[Brett Cannon]

Brett Cannon added the comment:

Should mention that this is probably no harder than changing a key getattr() 
call to None (as pointed out by Nick).

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[issue17098] Set __loader__ on modules imported by the C level

[Brett Cannon]

Brett Cannon added the comment:

Should probably check the state of sys.modules in importlib._bootstrap._setup() 
and see if the missing modules are there and then just retroactively set 
__loader__ to BuiltinImporter (as is already done in that function for sys and 
_imp): 
http://hg.python.org/cpython/file/905b4e3cf6d0/Lib/importlib/_bootstrap.py#l1709
 .

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[issue14468] Update cloning guidelines in devguide

[Éric Araujo]

Éric Araujo added the comment:

Let’s stay friends here :)  Why not remove the existing patches here, export 
the 8 changesets as patches, attach them here, let people comment?  (I’m not 
keen on having discussion outside of our system)

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[issue17099] Raise ValueError when __loader__ not defined for importlib.find_loader()

[Barry A. Warsaw]

Changes by Barry A. Warsaw :


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[issue17098] Set __loader__ on modules imported by the C level

[Barry A. Warsaw]

Changes by Barry A. Warsaw :


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[issue17032] Misleading error message: global name 'X' is not defined

[Ram Rachum]

Ram Rachum added the comment:

Does fixing this ticket require anything more than making a change in the 
string that Python uses for this exception?

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[issue17022] Inline assignment uses the newly created object

[R. David Murray]

R. David Murray added the comment:

Well, it is consistent with plain reasoning if you remember that (a) python is 
a dynamic language and (b) python assignments do not return values (this is a 
core principle in the language design), which means that (c) the chained 
assignment form is a shorthand.  Of course, you do then have to look up what it 
is a shorthand *for*, but if you approached another language's chained 
assignment with a Python mindset, you'd also have to look it up to find out 
what rules applied to that language.

It is hard not to make assumptions based on other languages you've learned.  
Interestingly, when I did a quick google for what other languages do for 
chained assignment I didn't come up with much.  Looks like most don't support 
it, or if they do they do so as a side effect of an assignment returning a 
value.

So, yes, Python is a unique language.  There are usually good underlying 
reasons for the various design decision made (not always, but very very often).

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[issue17099] Raise ValueError when __loader__ not defined for importlib.find_loader()

[Andrew Svetlov]

Changes by Andrew Svetlov :


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[issue17098] Set __loader__ on modules imported by the C level

[Andrew Svetlov]

Changes by Andrew Svetlov :


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[issue17099] Raise ValueError when __loader__ not defined for importlib.find_loader()

[Brett Cannon]

New submission from Brett Cannon:

If __loader__ is None then ValueError is raised, but if it is not defined then 
AttributeError is raised instead. Probably should harmonize around ValueError 
even in the missing attribute case since __loader__ = None is equivalent to the 
attribute not existing.

I'm on the fence about considering this a bug, though, since the docs say if 
__loader__ == None then ValueError but does not directly mention what happens 
if the attribute is missing. Since anyone who has written code for this 
probably is catching both attributes (if at all since all but three modules 
coming from Python will have __loader__ defined ATM), it should be fine, but it 
is still a change in API/semantics that doesn't contradict the docs.

--
components: Library (Lib)
messages: 181079
nosy: brett.cannon, ncoghlan, theller
priority: normal
severity: normal
stage: test needed
status: open
title: Raise ValueError when __loader__ not defined for importlib.find_loader()
type: behavior
versions: Python 3.3, Python 3.4

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[issue17098] Set __loader__ on modules imported by the C level

[Brett Cannon]

New submission from Brett Cannon:

E.g. _frozen_importlib, builtins, signal.

--
components: Interpreter Core
messages: 181078
nosy: brett.cannon, theller
priority: normal
severity: normal
stage: test needed
status: open
title: Set __loader__ on modules imported by the C level
type: behavior
versions: Python 3.3, Python 3.4

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[issue8713] multiprocessing needs option to eschew fork() under Linux

[Stan Seibert]

Changes by Stan Seibert :


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[issue17097] baseManager serve_client() not check EINTR when recv request

[Richard Oudkerk]

Changes by Richard Oudkerk :


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[issue17053] pydoc should use inspect.signature instead of inspect.getfullargspec

[Ronald Oussoren]

Ronald Oussoren added the comment:

The attached patch is a very rough prototype which seems to work (but wasn't 
tested beyond running pydoc on a number of function(-like) objects.

With the patch the documentation for a callable defined in C but with a 
__signature__ property shows argument names in the rendered prototype instead 
of just '(...)' while the documentation for python functions and C functions 
without a __signature__ also works.

Issues:

* Rendering to HTML is broken if a function has POSITIONAL_ONLY arguments
  (the names of those arguments are rendered as '' and that value
  is not escaped in the HTML output)

* This adds a "render" method to inspect.Signature and inspect.Param
  to be able to pass custom render function for elements of a signature
  and I'm not convinced that this is the right solution.

* There are no unittests for the new code (and I haven't run the existing
  tests to check if anything else has broken)

--
stage: needs patch -> test needed

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[issue1783] nonexistent data items declared as exports in sysmodule.h

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Thank you for the report, Jukka Laurila.

--
resolution:  -> fixed
stage: patch review -> committed/rejected
status: open -> closed

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[issue1783] nonexistent data items declared as exports in sysmodule.h

[Roundup Robot]

Roundup Robot added the comment:

New changeset 6074530b526f by Serhiy Storchaka in branch '2.7':
Issue #1783: Remove declarations of nonexistent private variables.
http://hg.python.org/cpython/rev/6074530b526f

New changeset 349419bb6283 by Serhiy Storchaka in branch '3.2':
Issue #1783: Remove declarations of nonexistent private variables.
http://hg.python.org/cpython/rev/349419bb6283

New changeset 9d68f705e25f by Serhiy Storchaka in branch '3.3':
Issue #1783: Remove declarations of nonexistent private variables.
http://hg.python.org/cpython/rev/9d68f705e25f

New changeset 905b4e3cf6d0 by Serhiy Storchaka in branch 'default':
Issue #1783: Remove declarations of nonexistent private variables.
http://hg.python.org/cpython/rev/905b4e3cf6d0

--
nosy: +python-dev

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[issue17097] baseManager serve_client() not check EINTR when recv request

[lvroyce]

New submission from lvroyce:

We create our customised manager which will fork child process with 
baseManager. Because we registered SIGCHLD to reap the zombie for manager, we 
found this causes baseManager raise RemoteError when called twice.(Test script 
attached.)

After look at baseManager.py we found recv() in handling the request has been 
interrupted by comming SIGCHLD, not retry recv(), but raise to client side 
directly.
try:

methodname = obj = None

request = recv()<--this line been interrupted 
by SIGCHLD

ident, methodname, args, kwds = request

obj, exposed, gettypeid = id_to_obj[ident]

if methodname not in exposed:

raise AttributeError(

'method %r of %r object is not in exposed=%r' %

(methodname, type(obj), exposed)

)

function = getattr(obj, methodname)
try:

res = function(*args, **kwds)

except Exception, e:

msg = ('#ERROR', e)

else:

typeid = gettypeid and gettypeid.get(methodname, None)

if typeid:

rident, rexposed = self.create(conn, typeid, res)

token = Token(typeid, self.address, rident)

msg = ('#PROXY', (rexposed, token))

else:

msg = ('#RETURN', res)
except AttributeError:
if methodname is None:
msg = ('#TRACEBACK', format_exc())
else:
try:
fallback_func = self.fallback_mapping[methodname]
result = fallback_func(
self, conn, ident, obj, *args, **kwds
)
msg = ('#RETURN', result)
except Exception:
msg = ('#TRACEBACK', format_exc())

except EOFError:
util.debug('got EOF -- exiting thread serving %r',
   threading.current_thread().name)
sys.exit(0)

except Exception:<--does not handle IOError,INTR here should 
retry recv() 
msg = ('#TRACEBACK', format_exc())

--
files: fakesupervdsm.py
messages: 181074
nosy: lvroyce
priority: normal
severity: normal
status: open
title: baseManager serve_client() not check EINTR when recv request
type: behavior
versions: Python 3.3
Added file: http://bugs.python.org/file28930/fakesupervdsm.py

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[issue17080] A better error message for float()

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

LGTM.

--
nosy: +serhiy.storchaka

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