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
priority: normal
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.
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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 preserv
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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Change by pavel-lexyr :
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nosy: +pavel-lexyr
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pull_requests: +25959
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pull_request: https://github.com/python/cpython/pull/27430
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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.datacl
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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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 nice
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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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
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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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 stuck
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
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
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 - only
Change by Pavel Ditenbir :
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Change by Pavel Ditenbir :
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pull_request: https://github.com/python/cpython/pull/24177
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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
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 trough a dangl
Change by Pavel Trukhanov :
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3.9
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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':
>>>
>>&
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
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't bee
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
Change by Pavel Minaev :
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pull_request: https://github.com/python/cpython/pull/13639
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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 prett
Change by Pavel Koneski :
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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,
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
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
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', '', 'exec')
... except SyntaxError as ex: prin
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 non-s
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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: Redundant
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Pavel Jurkas added the comment:
https://github.com/python/cpython/pull/8304
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Pavel Jurkas added the comment:
https://github.com/python/cpython/pull/8302
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https://github.com/python/cpython/pull/8301
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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
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
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-use as m
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Pavel Shpilev <p.shpi...@gmail.com> 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
New submission from Pavel Shpilev <p.shpi...@gmail.com>:
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 ''
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
>>> wi
Hello,
I'm trying to make an HTTPS request with urllib.
OS: Gentoo
Python: 3.6.1
openssl: 1.0.2l
This is my test code:
= CODE BLOCK BEGIN =
import ssl
import urllib.request
from lxml import etree
PROXY = 'proxy.vpn.local:'
URL = "https://google.com;
proxy =
Pavel Chuvakhov added the comment:
Sorry about script, n1 should be n, and n2 should be m. Updated script is
attached.
Ofc mpz is a way out. One also could cast int( np.int32 ) explicitly. I just
wanted to underline that the best way is to hide all this stuff from a user and
not make
New submission from Pavel Chuvakhov:
Standard `pow` function of three integer arguments should result in a reminder
`(x**y) % z`. It seems that `pow(x,y,z)` ignores `%z` operation if type(z) is
not `int`. This happens also in the cases when `z` has type numpy.int32,
numpy.int64, etc. I
On Tuesday, 1 November 2016 20:09:14 UTC+3, Peter Otten wrote:
> Pavel Velikhov wrote:
>
> > On Tuesday, 1 November 2016 12:50:37 UTC+3, Peter Otten wrote:
> >> Pavel Velikhov wrote:
> >>
> >> > We have released PythonQL, a query language extension to
On Tuesday, 1 November 2016 20:16:43 UTC+3, Michael Torrie wrote:
> On 11/01/2016 02:56 AM, Pavel Velikhov wrote:
> > Hi Folks,
> >
> > We have released PythonQL, a query language extension to Python (we
> > have extended Python’s comprehensions with a full-fledged
On Tuesday, 1 November 2016 12:50:37 UTC+3, Peter Otten wrote:
> Pavel Velikhov wrote:
>
> > We have released PythonQL, a query language extension to Python (we have
> > extended Python’s comprehensions with a full-fledged query language,
> > drawing from the useful
Hi Folks,
We have released PythonQL, a query language extension to Python (we have
extended Python’s comprehensions with a full-fledged query language,
drawing from the useful features of SQL, XQuery and JSONiq). Take a look at the
project here: http://www.pythonql.org and lets us know what
Pavel Savchenko added the comment:
An implementation of this exists in pytest-mock. Recently an idea was brought
up to shift the development of PR #57 into mock directly for everyone's benefit.
https://github.com/pytest-dev/pytest-mock
https://github.com/pytest-dev/pytest-mock/pull/58
Changes by Pavel Cisar <cisarpa...@gmail.com>:
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New submission from Pavel Cisar:
Hi,
python re returns wrong end index of searched group and also subgroup itself.
Example:
In: price_string = u"1 307 000,00 Kč"
In: match = re.search(r"([,\.]00)\s?.*$", price_string)
In: print price_string, "|", matc
and especially in Jupyter notebooks. Would you have any
advise on how to approach these?
Thanks in advance!
Pavel Velikhov
P.S. Here's the demo site for our project,if you're interested: www.pythonql.org
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If you're familiar with C++, I recommend to have a look at Boost::Python.
Sample program:
#include
#include
void world()
{
std::cout << "hello world" << std::endl;
}
BOOST_PYTHON_MODULE( hello )
{
using namespace ::boost::python;
def( "world", );
}
Usage:
python -c "import
Hi all,
I'm pleased to announce initial release of PyFormat - C++ module which exposes
robust boost::format class from Boost.org C++ libraries.
The module supports Python 2.x and Python 3.x versions, bytestrings and unicode
strings as well.
The API exposes most of functions provided by
New submission from Pavel Belikov:
To demonstrate the capabilities of our analyzer, we regularly perform analysis
of open source projects. We had recently checked the CPython project.
Here is the link to the article about it: http://www.viva64.com/en/b/0414/
Official page of the analyzer: http
> but what about integers or strings?
Can you provide example?
---
No matter if __all__ uses names or objects, I think it should be validated not
only when importing '*', but always.
Frankly, do you always unit-test if __all__ works?
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Hi,
I today uncovered subtle bug and would like to share it with you.
By a mistake, I forgot to put comma into '__all__' tuple of some module. Notice
missing comma after 'B'.
# module foo.py
__all__ = (
'A',
'B'
'C',
)
class A: pass
class B: pass
class C: pass
If you try to import
Have you considered to use rather WSGI-based solution? (for Apache Httpd is
mod_wsgi). Mod_python is totally obsolete.
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Hi,
can you explain, why is the attribute 'fired' class-level and not
instance-level? There must be good reason for modifying class attribute from
instance.
Dne pondělí 6. června 2016 15:26:08 UTC+2 Chris Withers napsal(a):
> Hi All,
>
> errorhandler is a tiny but useful logging handler for
Suppose, I have some resource-intensive tasks implemented as functions in
Python.
Those are called repeatedly in my program.
It's guranteed that a call with the same arguments always produces the same
return value.
I want to cache the arguments and return values and in case of repititive
call
On суббота, 21 ноября 2015 г. 6:30:02 MSK, Dylan Riley wrote:
Also some more notes:
heads = int("1")
tails = int("2")
Why use this strange initialization? The usual way:
heads = 1
tails = 2
gives the same result.
while flips != 0:
flips -= 1
There's no need to use while and flips
On суббота, 21 ноября 2015 г. 6:30:02 MSK, Dylan Riley wrote:
i am learning python and was tasked with making a program that
flips a coin 100 times and then tells you
the number of heads and tails.
First, you have a syntax error:
if result = heads:
should be:
if result == heads:
Second,
New submission from Pavel Ivanov:
urllib.parse.urljoin does not conform the RFC 1808 in case of joining relative
URL’s containing ‘..’ path components anymore.
Examples:
Python 3.4:
>>> urllib.parse.urljoin('http://a.com', '..')
'http://a.com/..'
Python 3.5:
>>> urllib.p
Pavel Roskin added the comment:
Thank you for the comments. I was annoyed by py_compile making files with names
very similar to the original scripts, names that could not even be recognized
by shell patterns in .gitignore unless scripts ending with "c" are banned. But
th
Pavel Roskin added the comment:
That's what I have now:
check:
$(PYTHON) -m py_compile $(SOURCES)
rm -f $(addsuffix c, $(SOURCES))
make check
python -m py_compile redacted-build redacted-git-diff redacted-git-gc
redacted-git-status redacted-init redacted-server
New submission from Pavel Roskin:
$ echo "'''Simple script'''" >simple-script
$ PYTHONDONTWRITEBYTECODE=1 python3 -B -m py_compile simple-script
$ ls __pycache__
simple-scriptcpython-35.pyc
py_compile should recognize when the user doesn't want the bytecode to be
produced. Ot
I don't understand why all of you are telling him about '\r\n\, write(),..'
instead of recommending to use take library which already has all problems
resolved (python-gammu / wammu).
When one will write custom templating stuff, you would also recommend him to
take jinja.
--
On Tuesday, September 22, 2015 at 1:20:07 PM UTC+2, Timon Rhynix wrote:
> Hello, I have used pyserial, sms0.4 and other libraries to send sms via
> huawei E1750 modem.
> The code runs well and no error is thrown but the text message is not
> sent/delivered to the number.
> One of my code is as
Hi,
I recently found interesting GOTCHA while doing list comprehension in python
2.6:
values = ( True, False, 1, 2, 3, None )
[ value for value in values if value if not None ]
[True, 1, 2, 3]
I was wondering why this list comprehension returns incorrect results and
finally found a typo in
)+ [,]]
old_expression ::= or_test | old_lambda_expr
list_iter ::= list_for | list_if
list_if ::= if old_expression [list_iter]
So chaining multiple ifs is fine:
[ i for i in range(10) if True if True if True if True ]
Dne středa 5. srpna 2015 8:49:20 UTC+2 Pavel S napsal
$ cat /etc/redhat-release
Red Hat Enterprise Linux Server release 6.5 (Santiago)
$ python --version
Python 2.6.6
Incidentally, why Python 2.6?
ChrisA
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Hi Chris, yeah, I have to stick on the software which my employer provides to
me (we're enterprise company). I'm not root on that system. I'm happy with 2.6
now, two years ago we were on older RHEL with python 2.4 and it was a real pain
:)
$ cat /etc/redhat-release
Red Hat Enterprise Linux
Hello everybody!
We're looking for a well-experienced python developer who'd like to participate
in educational startup in Moscow, Russia. It's going to be a contractor's job
position for 6 months with possible prolongation.
Here is the link: http://edumate.ru
Main milestones for work
New submission from Pavel Strashkin:
According to http://www.json.org/ and
https://tools.ietf.org/html/rfc7159#section-7, the solidus (/) should be
escaped (\/) and currently it's not.
--
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priority: normal
severity: normal
status: open
title: json.dumps
Pavel Roskin added the comment:
I have tested the patch. It fixes the problem for me.
You are right, new programs would just supply translated help to the version
action. No effort would be saved.
But the programs updated from the deprecated syntax may rely on a separate
string list
Changes by Pavel Repin prepin+pythonb...@gmail.com:
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I checked my modules with pylint and saw the following warning:
W: 25,29: Used builtin function 'map' (bad-builtin)
Why is the use of map() discouraged?
It' such a useful thing.
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New submission from Pavel Tyslyatsky:
This proposal look preaty close to pep-463:
http://legacy.python.org/dev/peps/pep-0463/, but in assertion context.
Now python test libraries have different aproach for assertions, some try use
own implementations, for example, for equality `assertEqual
Pavel Tyslyatsky added the comment:
Thanks for reply, I really missed many cases. I will try look deeper.
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Pavel Kazlou added the comment:
The idea is to keep the same order as in input.
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New submission from Pavel Kazlou:
Currently when you use json.tool, fields are reordered alphabetically.
In source code the value of sort_keys is hardcoded to be true.
It should be easy to expose this option as command line parameter.
--
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Pavel Kazlou added the comment:
This is the line in module I'm talking about:
json.dump(obj, outfile, sort_keys=True, indent=4)
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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
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
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.
--
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versions: +Python 3.4
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 for more information.
import pkgutil
pkgutil.get_loader
There are some basics about Python objects I don't understand.
Consider this snippet:
class X: pass
...
x = X()
dir(x)
['__class__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__',
'__format__', '__ge__', '__getattribute__', '__gt__', '__hash__',
'__init__', '__le__', '__lt__',
Pavel Kazakov added the comment:
(Alternatively, we could redefine squares in Python. All other languages
just have the regular squares; Python has a super *extra* square 2! That
clearly makes squares in Python *better* than squares in other languages...)
Heh. I initially wasn't sure
New submission from Pavel Kazakov:
This is probably being nitpicky, but in the introduction section, the squares
list include a 2:
squares = [1, 2, 4, 9, 16, 25]
However, 2 is not a square number (perfect square). So it should be:
[1, 4, 9, 16, 25]
I've included a patch that removes the 2
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