python-ideas@python.org discussions

9	[Python-ideas] Round division

In Python there is a operation for floor division: a // b. Ceil division easy can be expressed via floor division: -((-a) // b). But round division is more complicated. This operation is needed in ...

Serhiy Storchaka
Sep 10, 2015 at 8:01 pm
Sep 11, 2015 at 4:30 pm

72	[Python-ideas] Python's Source of Randomness and the random.py module Redux

Ok, I reached out to Theo de Raadt to talk to him about what he was suggesting without Guido having to play messenger and forward fragments of the email conversation. I'm starting a new thread ...

Donald Stufft
Sep 10, 2015 at 12:01 am
Sep 11, 2015 at 8:27 pm

24	[Python-ideas] Structural type checking for PEP 484

Jukka wrote up a proposal for structural subtyping. It's pretty good. Please discuss. https://github.com/ambv/typehinting/issues/11#issuecomment-138133867 -- --Guido van Rossum (python.org/~guido) An ...

Guido van Rossum
Sep 9, 2015 at 8:17 pm
Sep 11, 2015 at 4:18 pm

10	[Python-ideas] BUG in standard while statement

Dear all I found a BUG in the standard while statement, which appears both in python 2.7 and python 3.4 on my system. It usually won't appear because I only stumbled upon it after trying to implement ...

Stephan Sahm
Sep 9, 2015 at 5:10 pm
Sep 11, 2015 at 2:39 am

92	[Python-ideas] Should our default random number generator be secure?

I've received several long emails from Theo de Raadt (OpenBSD founder) about Python's default random number generator. This is the random module, and it defaults to a Mersenne Twister (MT) seeded by ...

Guido van Rossum
Sep 9, 2015 at 4:35 pm
Sep 12, 2015 at 1:19 am

28	[Python-ideas] new format spec for iterable types

Hi, in the parallel "format and print" thread, Andrew Barnert wrote: ... That last thing, '{}\t{}'.format(head, '\t'.join(names)), is something I find myself writing relatively often - when I do not ...

Wolfgang Maier
Sep 8, 2015 at 10:00 am
Sep 10, 2015 at 10:27 am

4	[Python-ideas] NuGet/Chocolatey feed for releases

It would be incredibly convenient, especially for users of AppVayor's continuous integration service, if there were a(n official) repository for chocolatey containing recent releases of python. The ...

Alexander Walters
Sep 8, 2015 at 9:35 am
Sep 9, 2015 at 5:36 am

15	[Python-ideas] Wheels For ...

Hi folks, currently, I came across http://pythonwheels.com/ during researching how to make a proper Python distribution for PyPI. I thought it would be great idea to tell other maintainers to upload ...

Sven R. Kunze
Sep 6, 2015 at 5:33 pm
Sep 10, 2015 at 5:46 pm

0	[Python-ideas] PyParallel update

[CC'ing python-dev@ for those that are curious; please drop and keep follow-up discussion to python-ideas@] Hi folks, I've made a lot of progress on PyParallel since the PyCon dev summit ...

Trent Nelson
Sep 6, 2015 at 3:19 pm
Sep 6, 2015 at 3:19 pm

47	[Python-ideas] Desperate need for enhanced print function

Hi! This is my first time I'm sending an email to the python-ideas mailing list. I've got an enhancement idea for the built-in print function and I hope it is as good as I think it is. Imagine you ...

Anand Krishnakumar
Sep 5, 2015 at 7:33 pm
Sep 11, 2015 at 2:38 am

90	[Python-ideas] Non-English names in the turtle module.

I've opened an issue for adding non-English names to the turtle module's function names: https://bugs.python.org/issue24990 This would effectively take this code: import turtle t = turtle.Pen() ...

Al Sweigart
Sep 3, 2015 at 8:53 pm
Sep 10, 2015 at 5:17 pm

47	[Python-ideas] Add appdirs module to stdlib

When defining a place for config files, cache files, and so on, people usually hack around in a OS-dependent, misinformed, and therefore wrong way. Thanks to the tempfile API we at least don?t see ...

Philipp A.
Sep 1, 2015 at 8:00 am
Sep 4, 2015 at 1:43 am

7	[Python-ideas] ideas for type hints for variable: beyond comments

mypy currently inspects the comment on the line of first assignment for the variables to be type hinted. It is logical that at some time python language will add support to allow these type hints to ...

Ia n
Sep 1, 2015 at 4:03 am
Sep 2, 2015 at 4:01 am

0	[Python-ideas] some useful descriptors + a classtools module (was: Properties for classes possible?)

[Just to be clear, I don't have much time to pursue this so it's more food-for-though than anything. Feel free to pick up the baton. <wink ] While we're on the topic, there are other generic ...

Eric Snow
Aug 29, 2015 at 9:35 pm
Aug 29, 2015 at 9:35 pm

22	[Python-ideas] Draft2 PEP on string interpolation

With the major design decisions made, behold version 2 of my draft PEP on string interpolation. It's now significantly shorter due to removal of most of the i18n related discussion, pruning, as well ...

Mike Miller
Aug 27, 2015 at 4:40 am
Aug 28, 2015 at 5:13 pm

17	[Python-ideas] String interpolation: environment variables, command substitution

One of the remaining questions for the string interpolation subject is whether to allow for easy access to environment variables and output-capture of external processes (aka command-substitution) as ...

Mike Miller
Aug 26, 2015 at 6:20 pm
Aug 29, 2015 at 4:50 am

7	[Python-ideas] Forward-References & Out-of-order declaration

While reading material for implementing some kind of import hooks and so forth for the xfork package, I came across this one ...

Sven R. Kunze
Aug 25, 2015 at 6:03 pm
Aug 29, 2015 at 4:41 am

27	[Python-ideas] pep-0484 - Forward references and Didactics - be orthogonal

Hi, when looking at pep-0484 I find the *non-orthogonal* construction, which may lead to a misconcetion: What students should be able to code: 1. varinat ...

Prof. Dr. L. Humbert
Aug 24, 2015 at 4:19 am
Aug 28, 2015 at 7:21 pm

5	[Python-ideas] Why does sys.flags have both .interactive and .inspect?

The sys.flags structure has both .interactive and .inspect for when python is run with -i. I cannot figure out a way to make one 'True' and the other 'False'. Are they both needed? Can one be ...

Alexander Walters
Aug 23, 2015 at 6:30 pm
Aug 24, 2015 at 5:12 pm

3	[Python-ideas] all(iterable) should be like all(iterable, key=func)

functionality of all(iter) is to check all are true by converting it to boolean type if it is changed to all(iterable,key=lambda a:bool(a)) it still works and we can also do a lot of things like ...

Shiva prasanth
Aug 23, 2015 at 6:31 am
Aug 23, 2015 at 10:39 am

1	[Python-ideas] PEP 448

Re-sending after subscribing. On Fri, Aug 21, 2015 at 9:47 PM, Balakrishnan Balasubramanian wrote:

Balakrishnan B
Aug 22, 2015 at 2:01 am
Aug 22, 2015 at 11:40 am

4	[Python-ideas] pip list shows "name meta info of the package" which is of no use

i just learned decorators and i'm in a verge of asking why no decorators for objects thanks for helping me understand the concept of decorators. it was very helpful. suppose let us say we installed ...

Shiva prasanth
Aug 21, 2015 at 7:52 am
Aug 21, 2015 at 8:21 pm

3	[Python-ideas] why is there no decoration for objects

clearly we write decorators for classes and functions and now why not for objects suppose def increment(a): return a+1 a=5 @increment a should modify the value of a to 6 but instead it is giving an ...

Shiva prasanth
Aug 21, 2015 at 2:32 am
Aug 21, 2015 at 4:35 am

122	[Python-ideas] Draft PEP on string interpolation

The ground seems to be settling on the issue, so I have tried my hand at a grand unified pep for string interpolation. I originally started writing thinking I would fight arbitrary expressions, ...

Mike Miller
Aug 20, 2015 at 11:10 pm
Aug 30, 2015 at 6:40 pm

22	[Python-ideas] Properties for classes possible?

I think it would be great to have properties for classes in Python2 and Python3 There are some "patterns" to get this working ...

Thomas Güttler
Aug 20, 2015 at 6:54 am
Aug 29, 2015 at 9:21 pm

11	[Python-ideas] Is this group via google groups read only?

Hi, I wrote a message to this group via google groups yesterday. This message did not arrive here. Now I write as a subscriber to the mailman mailing list. My post is visible via google groups here ...

Thomas Güttler
Aug 20, 2015 at 6:52 am
Aug 21, 2015 at 11:03 pm

0	[Python-ideas] new feature for pip a moduletree

pip list only shows the name of package which auther wants which cant be imported for import we have to search for internet in which package format auther has written what i want to introduce is a ...

Shiva prasanth
Aug 18, 2015 at 1:20 am
Aug 18, 2015 at 1:20 am

29	[Python-ideas] template strings

In ECMAScript 6 there is a concept of Template Strings [1]. What if we add something similar in Python? Some key ideas -------------- 1. Template Strings (TS) will be built on top of PEP 498 ...

Yury Selivanov
Aug 17, 2015 at 8:13 pm
Aug 20, 2015 at 6:08 pm

0	[Python-ideas] pip moduletree new argument

pip list only shows the name of package which auther wants which cant be imported for import we have to search for internet in which package format auther has written what i want to introduce is a ...

Shiva prasanth
Aug 17, 2015 at 5:19 pm
Aug 17, 2015 at 5:19 pm

16	[Python-ideas] Map to Many Function

Currently, when the function for map() returns a list, the resulting object is an iterable of lists: [[1, 1], [2, 2], [3, 3], [4, 4]] However, a function to convert each element to multiple elements, ...

Mark Tse
Aug 15, 2015 at 7:18 pm
Aug 18, 2015 at 12:30 am

3	[Python-ideas] Draft PEP: Automatic Globbing of Filenames in argparse on Windows

PEP: XXX Title: Automatic Globbing of Filenames in argparse on Windows Version: $Revision$ Last-Modified: $Date$ Author: Kef Schecter <furrykef at gmail.com Status: Draft Type: Standards Track ...

Kef Schecter
Aug 14, 2015 at 9:32 am
Aug 14, 2015 at 1:47 pm

32	[Python-ideas] More "ensure*" packages

I'd like to propose expanding the list of 3rd-party packages we bundle and install by default. (Obviously this does not apply to platforms that repackage Python and can do whatever they want, but on ...

Steve Dower
Aug 13, 2015 at 5:06 pm
Aug 19, 2015 at 9:37 am

13	[Python-ideas] Yet More Unpacking Generalizations (or, Dictionary Literals as lvalues)

Hi All, Occasionally I find myself wanting to unpack the values of a dictionary into local variables of a function. This most often occurs when marshalling values to/from some serialization format ...

Scott Sanderson
Aug 12, 2015 at 1:57 pm
Aug 13, 2015 at 6:36 am

1	[Python-ideas] PEP 487

Has there been any progress with PEP 487? I am finding myself writing a lot of boilerplate because of Python's so-called "metaclass hell". What are the problems with PEP 487? Best, Neil An HTML ...

Neil Girdhar
Aug 12, 2015 at 8:29 am
Aug 12, 2015 at 12:25 pm

8	[Python-ideas] [Python-Dev] PEP-498: Literal String Formatting

So, again, I am -1000 on (both of these PEPs) because they are just another way of making it too easy to do the wrong thing. * #1 most prevalent security vulnerability: *1**CWE-89 ...

Wes Turner
Aug 11, 2015 at 6:22 pm
Aug 12, 2015 at 5:47 am

50	[Python-ideas] PEP 501 - i18n with marked strings

Hi, I haven't done i18n recently, so bare with me. I'm not sure about bolting this on to "format strings", in that it feels like an orthogonal concept. However, what if we had i18n strings as well, ...

Mike Miller
Aug 10, 2015 at 8:31 pm
Aug 22, 2015 at 4:25 am

8	[Python-ideas] Outside the box string formatting idea

While the discussion of string formatting has focused on the concept of "format strings", it seems to me they are really format expressions. The expressions in this case are a bit like comprehensions ...

Ron Adam
Aug 9, 2015 at 9:20 pm
Aug 11, 2015 at 8:09 pm

9	[Python-ideas] PEP-499: "python -m foo" should bind to both "__main__" and "foo" in sys.modules

I was recently bitten by the fact that the command: python -m foo pulls in the module and attaches it as sys.modules['__main__'], but not to sys.modules['foo']. Should the program also: import foo it ...

Cameron Simpson
Aug 8, 2015 at 9:49 am
Aug 10, 2015 at 10:49 am

7	[Python-ideas] Making concurrent.futures.Futures awaitable

There's an open issue for adding support for awaiting for concurrent.futures.Futures here: http://bugs.python.org/issue24383 This is about writing code like this: async def handler(self): result = ...

Alex Grönholm
Aug 7, 2015 at 4:51 pm
Aug 13, 2015 at 6:53 am

120	[Python-ideas] String interpolation for all literal strings

In the "Briefer string format" thread, Guido suggested [1] in passing that it would have been nice if all literal strings had always supported string interpolation. I've come around to this idea as ...

Eric V. Smith
Aug 5, 2015 at 6:56 pm
Aug 10, 2015 at 11:49 am

12	[Python-ideas] proposal: "python -m foo" should bind sys.modules['foo']

Hello all, This is a writeup of a proposal I floated here: https://mail.python.org/pipermail/python-list/2015-August/694905.html last Sunday. If the response is positive I wish to write a PEP ...

Cameron Simpson
Aug 5, 2015 at 2:03 am
Aug 10, 2015 at 10:32 pm

31	[Python-ideas] Use the plus operator to concatenate iterators

Concatenation is the most fundamental operation that can be done on iterators. In fact, we already do that with lists. [1, 2, 3] + [4, 5, 6] # evaluates to [1, 2, 3, 4, 5, 6] I propose: iter([1, 2, ...

Grayson, Samuel Andrew
Aug 5, 2015 at 12:22 am
Aug 5, 2015 at 4:48 pm

39	[Python-ideas] fork

Thanks everybody for the feedback on 'fork'. Let me address the issues and specify it further: 1) Process vs. Thread vs. Coroutine From my understanding, the main fallacy here is that the caller ...

Sven R. Kunze
Aug 1, 2015 at 5:36 pm
Aug 21, 2015 at 4:21 am

6	[Python-ideas] fork - other approaches

Thanks everybody for inspiring me with alternative ways of working with pools. I am very certain that any them will work as intended. However, they do not zero in 100% on my main intentions: 1) easy ...

Sven R. Kunze
Aug 1, 2015 at 5:29 pm
Aug 4, 2015 at 6:34 pm

3	[Python-ideas] fork

Hi everybody, well during the discussion of the concurrency capabilities of Python, I found this article reading worthwhile: http://chriskiehl.com/article/parallelism-in-one-line/ His statement ...

Sven R. Kunze
Jul 29, 2015 at 4:46 pm
Jul 30, 2015 at 7:24 am

10	[Python-ideas] Additional datetime-like module

(Apologies, I've gotten a bit lost in the recent PEP-431 discussion on -dev. To recap, it concerns changing datetime to use UTC internally.) When doing datetime calculations, I read two major use ...

Mike Miller
Jul 28, 2015 at 8:10 pm
Jul 29, 2015 at 6:08 pm

10	[Python-ideas] Loop manager syntax

Following the discussion of the new "async" keyword, I think it would be useful to provide a generic way to alter the behavior of loops. My idea is to allow a user to take control over the operation ...

Todd
Jul 28, 2015 at 1:28 pm
Jul 29, 2015 at 5:16 pm

40	[Python-ideas] Syntax for key-value iteration over mappings

Hello, Currently, the way to iterate over keys and values of a mapping is to call items() and iterate over the resulting view:: for key, value in a_dict.items(): print(key, value) I believe that ...

Petr Viktorin
Jul 26, 2015 at 4:09 pm
Jul 29, 2015 at 5:09 pm

1	[Python-ideas] Class introspection by pydoc vs. attributes on meta classes

Hi, Pydoc (and AFAIK loads of other introspection tools as well) currently ignores attributes on metaclasses. I wonder if it would be better to teach pydoc (and possibly inspect as well) about those, ...

Ronald Oussoren
Jul 25, 2015 at 11:47 am
Jul 26, 2015 at 2:09 pm

0	[Python-ideas] Add SMTPS support to logging.handlers.SMTPHandler

Example of modification: old: smtp = smtplib.SMTP(self.mailhost, port, timeout=self._timeout) new: if self.smtps: smtp = smtplib.SMTP_SSL(self.mailhost, port, *self.smtps, timeout=self._timeout) ...

Jakedrummond
Jul 24, 2015 at 2:49 am
Jul 24, 2015 at 2:49 am

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