And last but not least, Popen behavior on Windows makes it difficult to write
OS-independent Python code which calls external commands that are not binary by
default:
2 examples:
1. I wrote a coffeetools package which wraps the CoffeeScript compiler in a
Python API. The 'coffee' command is a
New submission from Dima Tisnek:
Let's fetch extended error codes from SQLite, information contained is not
particularly interesting to the user, but may be invaluable in debugging!
http://www.sqlite.org/rescode.html
https://sqlite.org/c3ref/extended_result_codes.html
Nice to see that my topic gains that interest :)
And I see that I should have gone more into detail about what I'm actually
trying to point out.
Chris Angelico wrote:
Hmm... hm... Ha! Found the difference. I had an explicit shebang on my
script; yours just starts out with shell commands. That
Chris Angelico wrote:
There's a specific search order. Back in the days of DOS, it was
simply com, then exe, then bat, but on modern Windowses, I think
it's governed by an environment variable.
You probably mean '%PATHEXT'. Mine is:
On Thu, May 7, 2015 at 7:14 PM, Alain Ketterlin
al...@universite-de-strasbourg.fr.invalid wrote:
Dave Angel da...@davea.name writes:
On 05/06/2015 11:36 AM, Alain Ketterlin wrote:
Yes, plus the time for memory allocation. Since the code uses r *=
..., space is reallocated when the result
Dave Angel da...@davea.name writes:
On 05/06/2015 11:36 AM, Alain Ketterlin wrote:
Yes, plus the time for memory allocation. Since the code uses r *=
..., space is reallocated when the result doesn't fit. The new size is
probably proportional to the current (insufficient) size. This means
Changes by Ned Deily n...@acm.org:
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Changes by Karl Richter krichter...@aol.de:
--
components: Build
nosy: krichter
priority: normal
severity: normal
status: open
title: Makefile in tarball don't provide make uninstall target
versions: Python 2.7
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Mark Lawrence added the comment:
What if any harm can be done by applying the patch with Victor's work around?
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Ned Deily added the comment:
[Thanks for the headsup about the contributor agreement form, now reported as
https://github.com/python/pythondotorg/issues/747]
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New submission from Ned Deily:
This has come up in the past (for example, Issue549764) but, AFAIK, no one has
shown much interest in pursuing such a feature by providing a patch. Note that
it would likely be very tricky to cover all the edge cases properly. As a
practical matter, one reason
Guido van Rossum added the comment:
I think it's fine. It collects all the keys and values and then calls
BUILD_MAP (a new opcode), rather than calling STORE_MAP for each key/value
pair. I think this is a reasonable strategy for compiling a dict display.
On Thu, May 7, 2015 at 11:40 AM, Joshua
Ethan Furman added the comment:
From Frank Woodall on python-ideas:
==
How to reproduce:
mkdir /tmp/path_test cd /tmp/path_test mkdir dir1 dir2 dir2/dir3 touch
dir1/file1 dir1/file2 dir2/file1 dir2/file2 dir2/dir3/file1
su
chmod 700 dir2/dir3/
chown root:root
Guido van Rossum added the comment:
I think you could help by (a) reviewing what's there, and (b) helping with
the implementation of __future__.
On Thu, May 7, 2015 at 1:16 PM, Yury Selivanov rep...@bugs.python.org
wrote:
Yury Selivanov added the comment:
You sure can! Take it, deploy it,
Stefan Zimmermann zimmermann.c...@gmail.com:
Calling an external command should be one of the simplest tasks in a
high level scripting language like Python.
Actually, that's quite a tricky operation in any OS. For example, bash's
simplicity is a trap that claims a lot of victims.
Anyway,
Changes by Ned Deily n...@acm.org:
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Joshua Landau added the comment:
There is a change as part of this to make dict building more like list and set
building, which both have this behaviour.
The same changes have likely occurred before whenever BUILD_LIST and BUILD_SET
were introduced, and this behaviour seems particularly
Stefan Behnel added the comment:
I get a test failure in Cython's compatibility tests which seems to be
attributable to this change:
def sideeffect(x):
... L.append(x)
... return x
def unhashable(x):
... L.append(x)
... return [x]
L = []
Changes by Ethan Furman et...@stoneleaf.us:
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Changes by Ned Deily n...@acm.org:
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priority: normal - low
stage: - needs patch
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Geoff Shannon added the comment:
Okay, I just found another way to achieve the same effect of letting the _read
function ignore data but not inadvertantly close the stream. It relies on the
fact that terminals will ignore null bytes fed to them.
Now there are no code changes required, just
Yury Selivanov added the comment:
You sure can! Take it, deploy it, run the test suite, and then start writing
real code that uses it. When you find a problem, that's what needs help! :)
Thank you for this generic answer, Chris.
The reason I was asking is because issue #24017 depends on
Changes by Ned Deily n...@acm.org:
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Ned Deily added the comment:
Thanks for the report. This problem and solution was just reported recently in
Issue24111.
--
nosy: +ned.deily
resolution: - duplicate
stage: - resolved
status: open - closed
superseder: - Valgrind suppression file should be updated
Ned Deily added the comment:
[Note, this is in response to the opening of this issue by krichter; the
opening did not generate a message itself]
This has come up in the past (for example, Issue549764) but, AFAIK, no one has
shown much interest in pursuing such a feature by providing a patch.
Changes by Ned Deily n...@acm.org:
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Yury Selivanov added the comment:
Third patch attached. Victor, it would be great if you can review it!
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Marko Rauhamaa wrote:
Anyway, Python has os.system() that does the quick and dirty thing you
might be looking for.
Always invokes shell == overhead for .exe files
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Berker Peksag added the comment:
23796_fix_with_tests.patch LGTM. I'll apply it this weekend. Thanks for the
patch, John.
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On Fri, May 8, 2015 at 1:14 AM, Ian Kelly ian.g.ke...@gmail.com wrote:
On Thu, May 7, 2015 at 8:03 AM, Chris Angelico ros...@gmail.com wrote:
On Thu, May 7, 2015 at 11:44 PM, Marko Rauhamaa ma...@pacujo.net wrote:
Whole programming cultures, idioms and right ways differ between
platforms.
Yury Selivanov added the comment:
Yury's patch mostly looks good to me, except:
Thanks!
* the check in contextlib should be against __cause__ rather than
__context__, and there should be a new test for this code handling path
Done. I've also added one test for correct handling of
Changes by Aaron Meurer asmeu...@gmail.com:
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ssh added the comment:
Thanks for checking in the RFC. I had done that before I posted my
StackOverflow question, but should have mentioned it here for completeness.
I've addressed the comments.
--
Added file: http://bugs.python.org/file39315/mywork.patch
Am 03.05.2015 um 10:48 schrieb Ben Finney:
That's not as clear as it could be. Better is to be explicit about
choosing “exponential” format::
foo = 5.223701009526849e-05
{foo:5.0e}.format(foo=foo)
'5e-05'
Or even better the general format, which also works for 0.:
On 05/07/2015 06:24 AM, Chris Angelico wrote:
On Thu, May 7, 2015 at 8:10 PM, Marko Rauhamaa ma...@pacujo.net wrote:
Stefan Zimmermann zimmermann.c...@gmail.com:
And last but not least, Popen behavior on Windows makes it difficult
to write OS-independent Python code which calls external
Jens Timmerman added the comment:
Wel, I can confirm that this is fixed in new libffi shipped with python now,
and the problem no longer occurs on 3.4.3 (only version I checked)
--
___
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Stefan Zimmermann zimmermann.c...@gmail.com:
And last but not least, Popen behavior on Windows makes it difficult
to write OS-independent Python code which calls external commands that
are not binary by default:
Then, write OS-dependent Python code.
I don't think it's Python's job to pave
On Thu, May 7, 2015 at 8:10 PM, Marko Rauhamaa ma...@pacujo.net wrote:
Stefan Zimmermann zimmermann.c...@gmail.com:
And last but not least, Popen behavior on Windows makes it difficult
to write OS-independent Python code which calls external commands that
are not binary by default:
Then,
Chris Angelico ros...@gmail.com:
I was specifically disagreeing with the notion that it's right and
normal to write a bunch of platform-specific code in Python. That
should be the rarity.
Why is that?
Code is written for a specific need and environment. Often trying to
write generic
On Fri, May 8, 2015 at 2:53 PM, Rustom Mody rustompm...@gmail.com wrote:
Yeah I know
And if python did not try to be so clever, I'd save some time with
student-surprises
In a program, an expression
statement simply discards its result, whether it's None or 42 or
[1,2,3] or anything else.
On Fri, May 8, 2015 at 1:24 AM, Marko Rauhamaa ma...@pacujo.net wrote:
That's Python's job. Abstracting away all those differences so you
don't have to look at them.
That's the difference between our opinions: you want Python to work the
same on different OS's. I want Python's system
On Wednesday, May 6, 2015 at 11:19:07 AM UTC+5:30, Steven D'Aprano wrote:
On Wednesday 06 May 2015 14:47, Rustom Mody wrote:
It strikes me that the FP crowd has stretched the notion of function
beyond recognition And the imperative/OO folks have distorted it beyond
redemption.
In what
On Fri, May 8, 2015 at 2:06 PM, Rustom Mody rustompm...@gmail.com wrote:
If the classic Pascal (or Fortran or Basic) sibling balanced abstractions
of function-for-value procedure-for-effect were more in the collective
consciousness rather than C's travesty of function, things might not have
On Friday, May 8, 2015 at 10:24:06 AM UTC+5:30, Rustom Mody wrote:
get is very much a function and the None return is semantically significant.
print is just round peg -- what you call conceptual function -- stuffed into
square hole -- function the only available syntax-category
Sorry
Changes by Ma Lin wjss...@sohu.com:
Added file: http://bugs.python.org/file39319/forpy34.patch
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Changes by Ma Lin wjss...@sohu.com:
Added file: http://bugs.python.org/file39320/forpy35.patch
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Chris Angelico ros...@gmail.com writes:
On Fri, May 8, 2015 at 1:24 AM, Marko Rauhamaa ma...@pacujo.net wrote:
That's Python's job. Abstracting away all those differences so you
don't have to look at them.
That's the difference between our opinions: you want Python to work
the same on
Changes by Ma Lin wjss...@sohu.com:
Removed file: http://bugs.python.org/file39278/forpy3.patch
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Changes by Ma Lin wjss...@sohu.com:
Removed file: http://bugs.python.org/file39277/forpy27.patch
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Ma Lin added the comment:
I examined all Chinese codecs, here are the patches, please review them, feel
free to ask me your question.
Thanks to Hye-Shik, your framework is very easy to understand :)
--
Added file: http://bugs.python.org/file39318/forpy27.patch
On Wednesday, May 6, 2015 at 6:41:38 PM UTC+5:30, Dennis Lee Bieber wrote:
On Tue, 5 May 2015 21:47:17 -0700 (PDT), Rustom Mody declaimed the following:
If the classic Pascal (or Fortran or Basic) sibling balanced abstractions of
function-for-value
procedure-for-effect were more in the
Changes by Berker Peksag berker.pek...@gmail.com:
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Ezio Melotti added the comment:
Do you have authoritative links that describe these standards?
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On Friday, May 8, 2015 at 10:04:02 AM UTC+5:30, Chris Angelico wrote:
On Fri, May 8, 2015 at 2:06 PM, Rustom Mody wrote:
If the classic Pascal (or Fortran or Basic) sibling balanced abstractions
of function-for-value procedure-for-effect were more in the collective
consciousness rather
Berker Peksag added the comment:
A minor comment about the __future__ changes: 3.5.0a1 should probably be
3.5.0b1.
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On Fri, May 8, 2015 at 8:20 AM, mark.r.bannis...@googlemail.com wrote:
I needed to develop a highly scalable multi-threaded TCP server in Python and
when I started writing it in 2013 I could not find a suitable library that
would scale the way I needed but also easy to use.
So I invented
Chris Angelico added the comment:
The comment was general because I honestly had no idea what was needed still.
All I knew was that the patch seemed to work for me, all tests passing
(including the new one). Thanks for uploading the new patch; it compiles
happily, and I'm running tests now,
Ma Lin added the comment:
Good question.
GB2312:
I tested those programming languages one by one.
GBK/CP936/GB18030-2000:
I gathered data via Internet as much as I can, then compare them to Python3's
codecs. I check key points with authoritative source, and verify every appeared
conflicts.
On Thu, May 7, 2015 at 11:44 PM, Marko Rauhamaa ma...@pacujo.net wrote:
Chris Angelico ros...@gmail.com:
A software system is defined through its interfaces.
And the most important interface is with a human.
I barely ever program anything for the human interface.
If you want to write
Chris Angelico ros...@gmail.com:
A software system is defined through its interfaces.
And the most important interface is with a human.
I barely ever program anything for the human interface.
If you want to write single-platform code, go for it; but if you want
to write cross-platform
R. David Murray added the comment:
It seems reasonable to provide as much error information as is available, one
way or another. Would you like to work on a patch?
--
nosy: +r.david.murray
versions: -Python 3.5
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Python tracker
Yury Selivanov added the comment:
Hi,
Please find attached an updated patch.
Summary of changes:
1. Most of feedback from Nick Coghlan and Serhiy Storchaka is applied;
2. Changes in difflib.py were reverted (unless we add the __future__ import
there right now there is no need to fix it);
New submission from Devin Jeanpierre:
Maybe the functions should be split up into those you shouldn't need to call
directly, and those you should? I find it unlikely that you're supposed to use
codecs.encode(..., 'hex') and codecs.decode(..., 'hex') instead of binascii
(the only other thing,
R. David Murray added the comment:
No, actually, using codecs would be the most straightforward way to achieve
portability. The usual way to get hex in python2 was encode('hex'), which uses
the codec. But if you want to use hexlify instead, I don't see any reason not
to. There's no reason
Changes by Yury Selivanov yseliva...@gmail.com:
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Nick Coghlan added the comment:
This could likely stand to be clarified in the language reference, though
(as well as in the 3.5 porting notes)
--
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Nick Coghlan added the comment:
Yury's patch mostly looks good to me, except:
* the check in contextlib should be against __cause__ rather than
__context__, and there should be a new test for this code handling path
* there should be a new test for the __future__ flag itself (independently
of
Guido van Rossum added the comment:
Or, if it's perfect (or good enough :-), just check it in.
On Thu, May 7, 2015 at 1:18 PM, Guido van Rossum rep...@bugs.python.org
wrote:
Guido van Rossum added the comment:
I think you could help by (a) reviewing what's there, and (b) helping with
the
Hi,
I needed to develop a highly scalable multi-threaded TCP server in Python and
when I started writing it in 2013 I could not find a suitable library that
would scale the way I needed but also easy to use.
So I invented one - it's called Pyloom. If you want to take a look, it's part
of my
Changes by Brian Curtin br...@python.org:
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This discussion is getting really interesting and far beyond the actual topic :)
I want to add some additional thoughts on Popen:
Marko Rauhamaa wrote:
Stefan Zimmermann:
And last but not least, Popen behavior on Windows makes it difficult
to write OS-independent Python code which calls
New submission from Florian Höch:
If a ParsingError occurs while reading a config file, the multi-line values
collected while reading will never be joined because the error is raised before
this can happen. This leads to very unexpected results, e.g. consider the
following config.ini:
Florian Höch added the comment:
[Btw, you might want to fix the contributor agreement form - I can't sign it
because it shows no text, so I don't know what I'm supposed to enter in the
fields (Firefox 37.0.2)]
--
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Chris Angelico ros...@gmail.com:
What's the best way to farm work off to a bunch of processes and have
them communicate their results back? You use the subprocess module,
and then it doesn't matter whether they use Unix sockets, named pipes,
physical files on the disk, or miniature nuclear
Changes by Michael Ensslin michael.enss...@googlemail.com:
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title: Python 3 ships an outdated valgrind suppresison file. - Python 3 ships
an outdated valgrind suppressison file.
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Mark Lawrence added the comment:
I think we should be properly handling errors. If people agree I'll provide a
new patch to cover code and doc changes, but I've no idea how to provide any
form of unit test for the change.
--
nosy: +BreamoreBoy, paul.moore, steve.dower, zach.ware
Michael Ensslin added the comment:
Note:
Additionally replacing
PyObject_Free - _PyObject_Free
and
PyObject_Realloc - _PyObject_Realloc
appears to fix the issue.
--
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On Thu, May 7, 2015 at 8:03 AM, Chris Angelico ros...@gmail.com wrote:
On Thu, May 7, 2015 at 11:44 PM, Marko Rauhamaa ma...@pacujo.net wrote:
Whole programming cultures, idioms and right ways differ between
platforms. What's the right way to write a service (daemon)? That's
probably
New submission from Michael Ensslin:
The suppression file that is shipped in Misc/valgrind-python.supp of the
CPython 3(.x) source tarball only works with CPython 2.
This was tested on Debian Sid, with Python 3.4.3 and Python 2.7.9, both
presumably not compiled with --valgrind.
Since Debian
Changes by Serhiy Storchaka storch...@gmail.com:
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Demian Brecht added the comment:
I left a small comment around indentation in Rietveld.
Also, for the sake of completeness (and for others taking part in this
review/commit), I dug through the relevant RFCs and none of them seem to define
time as having sub-section resolution.
--
On Thu, May 7, 2015 at 9:28 PM, Dave Angel da...@davea.name wrote:
It's a nice goal. But these aren't OS features in Windows, they're shell
features. And there are several shells. If the user has installed a
different shell, is it Python's job to ignore it and simulate what cmd.exe
does?
New submission from vyktor:
When using pdb -m pdb test.py and entering:
(Pdb) b A.f
Breakpoint 1 at d:\tmp\stack\test.py:8
(Pdb) commands 2
(com) disable 2
(com) until 13
(com) end
Until doesn't seem to have any effect. When statement is executed manually,
everything works as expected
Jens Timmerman added the comment:
yep, newer versions of python with newer libffi do not longer have this issue,
confirmed with python 3.4.3
--
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On Thu, May 7, 2015 at 10:41 PM, Marko Rauhamaa ma...@pacujo.net wrote:
Chris Angelico ros...@gmail.com:
I was specifically disagreeing with the notion that it's right and
normal to write a bunch of platform-specific code in Python. That
should be the rarity.
Why is that?
Code is written
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