New submission from Pavel:
At the very beginning the csv module documentation
(https://docs.python.org/3.7/library/csv.html) advises to open files passing
newline='' parameter though three examples don't include it:
Here are the examples:
1:
>>> import csv
>&
New submission from Pavel:
The example advises ".*[.](?!bat$).*$" expression "to match filenames where the
extension is not bat". But here is an example which passes such check:
>>> re.match("(.*)[.](?!bat$).*$", "test.a.bat")
<_sre.SR
Pavel Boldin added the comment:
We have raw data packages from some tools. These packages contains bitfields,
arrays, simple data and so on.
We want to parse them into Python objects (structures) for analysis and
storage. I tried to use ctypes, but now I wrote myself implementation of raw
Changes by Pavel Labushev :
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New submission from Pavel Bogdanovic :
Compiling of Python does end with an error.
It has to do with changes in Ubuntu: https://wiki.ubuntu.com/MultiarchSpec
I added one line after python's setup.py after line 351
add_dir_to_list(self.compiler.library_dirs, '/usr/lib/i386-linux-gnu
Pavel Bogdanovic added the comment:
yes, the patch mentioned in issue 11715 works.
Sorry for crossposting the issue.
--
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New submission from Pavel Boldin :
ctypes seems to work incorrectly with _swappedbytes_ specified.
I.e. it misses some values from buffer:
class X(ctypes.Structure):
_swappedbytes_ = 1
_pack_ = 1
_fields_ = [
('a', ctypes.c_ubyte, 4),
('b'
Pavel Boldin added the comment:
Yes. Thanks. But here is another error:
import ctypes
class X(ctypes.Structure):
_pack_ = 1
_fields_ = [
('a', ctypes.c_ubyte, 4),
('b', ctypes.c_ubyte, 4),
('c', ctypes.c_ushort, 4),
Pavel Boldin added the comment:
OK. So, it seems just like ctypes work, but don't for my needs.
Thing that bothers me anyway is the strange code, where size contains either
size (when bitsize==0) or bitsize in upper 16 bits and bitoffset in lower 16
New submission from Pavel Labushev :
"import ctypes" causes segfault on read-only filesystem
This regression was introduced in python-2.6.6 and exists in all the later
versions.
To reproduce run python -c "import ctypes" on read-only filesystem:
(gdb) file python3.2
Pavel Labushev added the comment:
How to reproduce:
# mkdir /mnt/readonly
# mount --bind / /mnt/readonly
# mount -o remount,ro /mnt/readonly
# mount -t proc proc /mnt/readonly/proc
# chroot /mnt/readonly python3.2 -c "import ctypes"
Segmentation fault
If your python build expect
New submission from Pavel Strashkin <[EMAIL PROTECTED]>:
Python 2.5.2 (r252:60911, May 7 2008, 15:19:09)
[GCC 4.2.3 (Ubuntu 4.2.3-2ubuntu7)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from xml
New submission from Pavel Strashkin <[EMAIL PROTECTED]>:
All file/stream-like objects in Python have "readline" method with
optional "length" argument, but wsgiref.validate.InputWrapper doest not
have. Some 3rd party modules/packages use this argument. As result ther
Pavel Vinogradov added the comment:
This patch also looks good for me. It convert all test cases and run
successfully on latest python trunk (on Linux).
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Pavel Vinogradov added the comment:
I'm work on this issue in
GHOP(http://code.google.com/p/google-highly-open-participation-psf/issues/detail?id=216&can=1&colspec=ID%20Status%20ClaimedBy%20Due%20NeedsReview%20Summary)
I'm attach updated patch for python trunk. This patch f
Pavel Vinogradov added the comment:
You can see confirmation from Georg on thread in GHOP:
http://code.google.com/p/google-highly-open-participation-psf/issues/detail?id=216&can=1&colspec=ID%20Status%20ClaimedBy%20Due%20NeedsReview%20Summary#c20
I can update patch for 3.0 (it don'
Pavel Vinogradov added the comment:
This patch include brief lastrowid description based on my experience and
Python DB API 2.0 PEP.
--
keywords: +patch
nosy: +pavel.vinogradov
Added file: http://bugs.python.org/file9582/lastrowid_rst_desctiption.diff
New submission from Pavel Bazant <[EMAIL PROTECTED]>:
When python is in interactive mode, curses does not react to resize
events properly.
test.py:
import curses
def run():
stdscr=curses.initscr()
key=0
while(key!=ord('q')):
key=stdscr.getch()
stdscr.addstr(0,0,str
Pavel Kosina added the comment:
the following very simple example might be the the same issue:
x="ěščřžýáíé"
print (x)
It reliably puts down IDLE entirely without any error message. It is
saved in UTF-8.
python +idle 3.0, wxp sp3
--
n
Pavel Kosina added the comment:
Thank you. Not sure, what to do now, cause the putting down of IDLE is
fixed, but still within IDLE I get wrong output:
x="ěščřžýáíé"
print (x)
>>>
ěščřžýáĂĂ©
when running this script under python command line form another edito
Pavel Kosina added the comment:
Moreover: do you think its good idea to change the file encoding at
opened and then saved file without any question when there is no
encoding declaration? :-( Users do not edit just python programs, they
can edit also config files, text files, etc
It could
New submission from Pavel Kosina :
When you open file without encoding declaration, make changes and save,
then IDLE changes without any question encodings to utf8. You can try it
on attached file that is cp1250 now.
It could be that at first saving we are asked to use
*utf8
*current one
Pavel Kosina added the comment:
I vote for fixing this too. This might be simplified/another example of
above mentioned issues:
# -*- coding: utf-8 -*-
print ("ěščřžýáíé")
in IDLE prints this:
>>>
ěščřžýáĂĂ©
When running this script under python command line fro
Pavel Kosina added the comment:
You can open script made in python 2.x and it stops immediately working
after saving, if it is coding-aware. You can have bigger project and use
idle for editing config and text files from this project too. It is
"unfair" to change without notifi
Pavel Kosina added the comment:
I forgot about "Perhaps IDLE should offer to convert it on opening."
That would be nice, too.
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Pavel Kosina added the comment:
Sorry, where is the patch?
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Pavel Kosina added the comment:
OK, I got it.
In my opinion it would nice if user can either convert file to utf8 or
to do nothing and add new encodings declaration or cancel. Current
"Cancel" gives an Decoding error. If you give an encodings that doesn't
exist, it shouldn&
Pavel Kosina added the comment:
seems to be working.
Seems to me now I get it. The file encoding is ruled by the encoding
declaration. When I stated
# -*- coding: cp1250 -*-
then the file would be saved in cp1250.
Now hoping that I would keep this issue, cause it comes with this
patches
Pavel Kosina added the comment:
Well, thanks a lot.
(aware this is really off this issue): Now I even get the system of
patches - issue 4008 solved the inconvenience in print Unicode signs
inside IDLE. Still not sure how works patches for Python versions. I
vote for including this a that
New submission from Pavel Kosina :
Nearly always (after opening) is IDLE window outside visible area.
Mainly the status bar is hidden under bottom windows menu bar. Same
situation happens when choosing Window-Zoom Height from IDLE menu.
xpsp3, 1024x768, py2.x-3.x
--
components: IDLE
Pavel Kosina added the comment:
sorry it is duplicate to issue 3286
pls close
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Pavel Kosina added the comment:
+1
--
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versions: +Python 3.1
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Pavel Kosina added the comment:
I might have another problem with this patch and maybe also that one in
issue 4008. Having a file with
print ("ěščřžýáíé")
# saved in cp1250
Open - confirm converting to utf8 - F5 - error: see attached file
idleunicode1.jpg
Added file: http://bugs.
Pavel Kosina added the comment:
Martin v. Löwis napsal(a), dne 3.1.2009 22:24:
> I can't reproduce the problem. Can you please attach the
> exact file that failed to work?
>
You can use that one that is already here: cp1250.py. It is the same
Pavel Kosina added the comment:
Microsoft Windows XP [Verze 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\prg\Python30\Lib\idlelib>svn update# from
http://svn.python.org/projects/python/branches/py3k/Lib/idlelib
Restored 'AutoCompleteWindow.py'
Restored 'To
Pavel Kosina added the comment:
Yes. God job. ;-)
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Pavel Kosina added the comment:
+1
In Tkinter there is still import Tkinter and not import tkinter.
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Pavel Kosina added the comment:
Martin v. Löwis napsal(a), dne 4.1.2009 14:39:
> Why that? This file is already encoded in utf-8 just fine. It is,
> simultaneously, also encoded in ASCII, cp1250, cp1252, and nearly
> any other encoding in use (as long as it is ASCII-based).
>
W
New submission from Pavel Kosina :
There should not be necessity to write filename *with extension* at the
saving dialog. It should be enough, at least on Windows, to put there
just "hello" and get "hello.py". It is really complication especially
for beginners. If they, as t
Pavel Kosina added the comment:
With this file - hello.py (attached) - I should be also asked for
converting to utf8. When I open it, nothing changes, after making
changes and saving then the encodings is my windows standard cp1250
Added file: http://bugs.python.org/file12582/hello.py
New submission from pavel-lexyr :
Python's native HTTP server (http.server module) has special code to allow it
to detect and bind to IPv6 addresses when called as a CLI tool. As of right
now, the code is in private functions. Those are not intended to be called by
library users - onl
New submission from pavel-lexyr :
As described in the documentation, itertools.takewhile() returns all the
elements until the first one that does not match the provided criterion. In
case of a destructive iterator, or one with side effects, not yielding an
element downstream may render
pavel-lexyr added the comment:
I see. If the syntax allows for better ways to do it now, perhaps a move
towards deprecation would be a better idea then? This would agree with the Zen.
Also, please elaborate more on the generator-based solutions you have in mind.
The suggestion stems from a
pavel-lexyr added the comment:
There is a core part of the `takedowhile` proposal's use case that I am having
trouble envisioning via the alternative `before_and_after` proposal. If the
`after` part of the iterator the user does not engage with, the transitional
elements will be
pavel-lexyr added the comment:
Thank you - that answers the questions. The use case where we would want to
know if the last element is transitional or not completely slipped my mind for
some reason.
--
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New submission from Pavel Moiseenko :
The version of the app is duplicated in the name of the app in the list of
installed apps in "Settings - Apps - Apps & features" and "Control Panel -
Programs - Programs and Features" in the version for Windows. Please remove the
Change by Pavel Moiseenko :
Added file: https://bugs.python.org/file50148/2021-07-14 13-50-19 Programs and
Features.png
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Pavel Moiseenko added the comment:
This does not cause any problems in the operation of the app, but visually it
looks strange. Most other apps don't indicate the version of the app in the
name of the app, but just indicate it in a specially made field for this.
Therefore, it would be
Pavel Moiseenko added the comment:
@paul.moore, but you don't need to open additional menus in the control panel
to see the version of the app.
--
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New submission from pavel-lexyr :
PEP 20 states:
> There should be one-- and preferably only one --obvious way to do it.
As of right now, two very similar constructions for making a lightweight
dataclass exist in Python.
collections.namedtuple is one of them. dataclasses.dataclass is
Change by pavel-lexyr :
--
keywords: +patch
nosy: +pavel-lexyr
nosy_count: 3.0 -> 4.0
pull_requests: +25959
stage: needs patch -> patch review
pull_request: https://github.com/python/cpython/pull/27430
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pavel-lexyr added the comment:
Most of the differences are direct upgrades added in the dataclass module.
Deprecating dataclass in favour of nametuple would be counterproductive, I
agree - what about vice versa?
--
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pavel-lexyr added the comment:
Touche. Another advantage a namedtuple has is that it can expand out of the box
- i.e., can write something like
> for x, y, z in namedtuple_list:
without any list comprehensions.
Can we bring those advantages into the dataclass while also preserving
Change by pavel-lexyr :
--
versions: -Python 3.10, Python 3.6, Python 3.7, Python 3.8, Python 3.9
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pavel-lexyr added the comment:
Thank you all for your input! Migrating the discussion to
https://mail.python.org/archives/list/python-id...@python.org/thread/UQRCDWMFNC5NRLLQCTYPOEGWJOIV7BGJ/
for now, if anyone wants to continue.
--
resolution: rejected
New submission from Pavel V :
There are no parentheses for 'font' argument in turtle.write() documentation
https://docs.python.org/3.10/library/turtle.html#turtle.write
--
assignee: docs@python
components: Documentation
messages: 406795
nosy: docs@python, willyns
priori
New submission from Pavel Ditenbir :
Steps to reproduce.
Run the attached script:
$ python3 argparse-indent-sample.py --help
The output is:
usage: argparse-indent-sample.py [-h] CMD ...
optional arguments:
-h, --help show this help message and exit
service:
CMD
Change by Pavel Ditenbir :
--
keywords: +patch
pull_requests: +23003
stage: -> patch review
pull_request: https://github.com/python/cpython/pull/24177
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Change by Pavel Ditenbir :
--
versions: +Python 3.10, Python 3.6, Python 3.7, Python 3.8
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Change by Pavel Ditenbir :
--
versions: -Python 3.6, Python 3.7
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New submission from Pavel Trukhanov :
The documentation found in
https://docs.python.org/3/library/hashlib.html#hash-algorithms
give us the following two examples:
```
For example, to obtain the digest of the byte string b'Nobody inspects the
spammish repetition':
>>>
Change by Pavel Trukhanov :
--
type: -> enhancement
versions: +Python 3.10, Python 3.5, Python 3.6, Python 3.7, Python 3.8, Python
3.9
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Pavel Raiskup added the comment:
Check out this default behavior of /bin/cp though:
$ mkdir a b
$ echo content > a/file
$ ln -s non-existing b/file
$ cp a/file b
cp: not writing through dangling symlink 'b/file'
Shouldn't shutil.copy*() refuse to write
Pavel Kostyuchenko added the comment:
I was able to reproduce the error with version
f13c5c8b9401a9dc19e95d8b420ee100ac022208 on FreeBSD 12.0 VM. The error seems to
be caused not by those changes, but by lack of synchronization in the
multiprocessing.managers.Server.
The failure happens
Pavel Kostyuchenko added the comment:
Also it might be viable to add some assertion to verify the take_gil is not
called with uninitialized interpreter.
I used the changes in the attachment (take_gil.assert.patch), but it produced
errors during test_tracemalloc with
Pavel Koneski added the comment:
If "equivalent input" is acceptable, then it looks like case B: other
implementations possibly having different forms of equivalent input.
I am going to post this question on python-dev.
--
versions: +Python 3.5,
Change by Pavel Koneski :
--
versions: -Python 3.5, Python 3.6
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Pavel Koneski added the comment:
> I'm assuming the real issue is wanting to make IronPython pass as much of the
> CPython test suite as possible.
This is indeed the case. The CPython test suite is invaluable in guiding
IronPython development. Most of the time, the tests are pre
Change by Pavel Koneski :
--
keywords: +patch
pull_requests: +13535
stage: -> patch review
pull_request: https://github.com/python/cpython/pull/13639
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Change by Pavel Minaev :
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Pavel Minaev added the comment:
This is a bit tricky to explain... There's no easy way to achieve this effect
"normally". It manifests due to the way some Python debuggers (specifically,
pydevd and ptvsd - as used by PyCharm, PyDev, and VSCode) implement
non-cooperative
Pavel Minaev added the comment:
It's also possible to hit if using some native code that starts a background
thread without going via threading, and runs Python code on that background
thread. In that case, if that Python code then does "import threading", and
threading hasn&
Pavel Minaev added the comment:
Debuggers will have to work around this in past Python versions that they
support (which still includes Python 2 for pretty much all of them), so this is
solely about resolving the inconsistency for the future. No point rushing it
for 3.8 specifically.
(The
New submission from Shishmarev Pavel :
https://github.com/python/cpython/blob/master/Lib/urllib/parse.py#L875
It's redundant to raise and then catch exception.
--
components: Library (Lib)
messages: 331436
nosy: PashaWNN
priority: normal
severity: normal
status: open
title: Redu
Change by Shishmarev Pavel :
--
keywords: +patch
pull_requests: +10287
stage: -> patch review
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Change by Shishmarev Pavel :
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Shishmarev Pavel added the comment:
https://github.com/python/cpython/blob/master/Lib/urllib/parse.py#L875
It's redundant to raise and then catch exception.
I mean:
if len(query) and not isinstance(query[0], tuple):
ty, va, tb = sys.exc_info()
raise TypeError("not a valid
New submission from Pavel Koneski :
Since Python 3.2, input in 'exec' mode of 'compile' does not have to end in a
newline anymore. However, it creates a surprising behavior when a 'SyntaxError'
is reported:
>>> try: compile('try', '
New submission from Pavel Shpilev :
It appears that in current implementation csv.QUOTE_ALL has no effect on csv.
reader(), it only affects csv.writer(). I know that csv is a poorly defined
format and all, but I think this might be useful to distinguish None and ''
values for the so
Pavel Shpilev added the comment:
I know that CSV specification says empty field and empty string are the same,
however, I still believe there is practical use for unconventional processing
of such fields.
In our specific case we parse CSVs produced by Amazon Athena (based on Presto)
in
Change by Pavel Raiskup :
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Pavel Raiskup added the comment:
On Friday, June 15, 2018 1:52:41 AM CEST Ben Finney wrote:
> On Thu, 2018-06-14 23:46 +, Aaron Meurer wrote:
> > Couldn't such a tool exist outside the standard library.
>
> I've tried writing such a tool. It would ideally re-u
Pavel Raiskup added the comment:
On Friday, June 15, 2018 11:54:04 AM CEST Daniel Walsh wrote:
> Correct, the reason I would want this is to add something to a Makefile
> ...
> manpages: foo.py
> ./python foo.py --manpage > foo.1
The /bin/argparse-manpage could help temp
New submission from Pavel Jurkas :
CGITB does not mangle private variables names. So they are displayed as
undefined even though they are defined. Example:
self.__core undefined
--
messages: 321757
nosy: pjurkas
priority: normal
severity: normal
status: open
title: CGITB does not
Change by Pavel Jurkas :
--
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pull_requests: +7835
stage: -> patch review
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Pavel Jurkas added the comment:
https://github.com/python/cpython/pull/8301
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https://github.com/python/cpython/pull/8302
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Pavel Jurkas added the comment:
https://github.com/python/cpython/pull/8304
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New submission from Pavel Aslanov :
if module was marked as not existing by setting sys.modules [fullname] to None,
then pkgutil.get_loader (fullname) will throw AttributeError.
Example:
#! /usr/bin/evn python
import unittest
import pkgutil
def main ():
pkgutil.get_loader
Pavel Aslanov added the comment:
Main use case of pkgutil.get_loader is to determine if its possible to load
module and either return loader or None. But it throws exception more over it
is AttributeErrror exception.
--
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New submission from Pavel Fedin :
commands.getoutput() is broken on Windows. The issue has been detected in
v2.7.2, but still persists in v2.7.3:
--- cut ---
Python 2.7.3 (default, Apr 10 2012, 23:24:47) [MSC v.1500 64 bit (AMD64)] on
win32
Type "help", "copyright", "
Pavel Fedin added the comment:
I see it's deprecated and dropped, but anyway, why not to fix it to work on
Windows? From 10197 i see the fix is quite simple, and there is lots of legacy
code i believe.
--
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New submission from Pavel Maltsev:
ppc_405, Linux 2.4, GCC 3.3.1
Python crashes on attempt to pass python callback function to custom C++
library under PowerPC 405. This happens because some versions of GCC (I guess
below 4.1) doesn't raise __NO_FPRS__ flag if hard-floats is not supp
Pavel Aslanov added the comment:
This function is broken again in version 3.4
The way it should look is:
Python 2.7.6 (default, Feb 26 2014, 12:07:17)
[GCC 4.8.2 20140206 (prerelease)] on linux2
Type "help", "copyright", "credits" or "license"
Pavel Machyniak added the comment:
Unfortunately this patch will not work if there is other (system) openssl
installed in the default locations (`/usr/include`, `/usr/lib`) because this
patch only add another path at the end of the search list.
Instead of this I will make a ticket for
New submission from Pavel Machyniak:
There is no easy way to build python with custom openssl build. This can lead
to miscellaneous problems (like segmentation faults) in various
situations/configurations (see eg.
http://stackoverflow.com/questions/22409092/coredump-when-compiling-python-with
Pavel Machyniak added the comment:
This is the proposed patch (compared 2 trees src & upd where src is latest
release 3.4.1, upd is my working). Changes are in: configure, setup.py. Please
review it and hopefully integrate to future releases.
--
keywords: +patch
versions: +Python
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