Re: [Python-Dev] What does a double coding cookie mean?

2016-03-19 Thread Serhiy Storchaka
On 17.03.16 19:23, M.-A. Lemburg wrote: On 17.03.2016 15:02, Serhiy Storchaka wrote: On 17.03.16 15:14, M.-A. Lemburg wrote: On 17.03.2016 01:29, Guido van Rossum wrote: Should we recommend that everyone use tokenize.detect_encoding()? I'd prefer a separate utility for this somewhere, since

Re: [Python-Dev] What does a double coding cookie mean?

2016-03-19 Thread Serhiy Storchaka
On 17.03.16 02:29, Guido van Rossum wrote: I've updated the PEP. Please review. I decided not to update the Unicode howto (the thing is too obscure). Serhiy, you're probably in a better position to fix the code looking for cookies to pick the first one if there are two on the same line (or do

Re: [Python-Dev] What does a double coding cookie mean?

2016-03-19 Thread Stephen J. Turnbull
Guido van Rossum writes: > > Should we recommend that everyone use tokenize.detect_encoding()? +1 ___ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe:

Re: [Python-Dev] What does a double coding cookie mean?

2016-03-19 Thread Guido van Rossum
I've updated the PEP. Please review. I decided not to update the Unicode howto (the thing is too obscure). Serhiy, you're probably in a better position to fix the code looking for cookies to pick the first one if there are two on the same line (or do whatever you think should be done there).

Re: [Python-Dev] What does a double coding cookie mean?

2016-03-19 Thread Glenn Linderman
On 3/16/2016 5:29 PM, Guido van Rossum wrote: I've updated the PEP. Please review. I decided not to update the Unicode howto (the thing is too obscure). Serhiy, you're probably in a better position to fix the code looking for cookies to pick the first one if there are two on the same line (or do

Re: [Python-Dev] PEP 515: Underscores in Numeric Literals (revision 3)

2016-03-19 Thread Nick Coghlan
On 19 March 2016 at 16:44, Georg Brandl wrote: > On the other hand, assuming decimal literals are introduced at some > point, they would almost definitely need to support underscores. > Of course, the decision whether to modify the Decimal constructor > can be postponed until

[Python-Dev] bitfields - short - and xlc compiler

2016-03-19 Thread Michael Felt
a) hope this is not something you expect to be on -list, if so - my apologies! Getting this message (here using c99 as compiler name, but same issue with xlc as compiler name) c99 -qarch=pwr4 -qbitfields=signed -DNDEBUG -O -I. -IInclude -I./Include

[Python-Dev] GSoC: looking for a student to help on FAT Python

2016-03-19 Thread Victor Stinner
Hi, I am now looking for a Google Summer of Code (GSoC) student to help me of my FAT Python project, a new static optimizer for CPython 3.6 using specialization with guards. The FAT Python project is already fully functional, the code is written and tested. I need help to implement new efficient

Re: [Python-Dev] bitfields - short - and xlc compiler

2016-03-19 Thread Michael Felt
Update: Is this going to be impossible? test_short fails om AIX when using xlC in any case. How terrible is this? == FAIL: test_shorts (ctypes.test.test_bitfields.C_Test)

Re: [Python-Dev] What does a double coding cookie mean?

2016-03-19 Thread Terry Reedy
On 3/16/2016 3:14 AM, Serhiy Storchaka wrote: On 16.03.16 02:28, Guido van Rossum wrote: I agree that the spirit of the PEP is to stop at the first coding cookie found. Would it be okay if I updated the PEP to clarify this? I'll definitely also update the docs. Could you please also update

[Python-Dev] Interested in the GSoC idea 'Roundup - GitHub integration'

2016-03-19 Thread Wasim Thabraze
Hello everyone, I am Wasim Thabraze, a Computer Science Undergraduate. I have thoroughly gone through the Core-Python GSoC ideas page and have narrowed down my choices to the project 'Improving Roundup GitHub integration'. I have experience in building stuff that are connected to GitHub.

Re: [Python-Dev] What does a double coding cookie mean?

2016-03-19 Thread Guido van Rossum
On Thu, Mar 17, 2016 at 5:04 AM, Serhiy Storchaka wrote: >> Should we recommend that everyone use tokenize.detect_encoding()? > > Likely. However the interface of tokenize.detect_encoding() is not very > simple. I just found that out yesterday. You have to give it a

Re: [Python-Dev] What does a double coding cookie mean?

2016-03-19 Thread Brett Cannon
On Thu, 17 Mar 2016 at 07:56 Guido van Rossum wrote: > On Thu, Mar 17, 2016 at 5:04 AM, Serhiy Storchaka > wrote: > >> Should we recommend that everyone use tokenize.detect_encoding()? > > > > Likely. However the interface of tokenize.detect_encoding() is

Re: [Python-Dev] bitfields - short - and xlc compiler

2016-03-19 Thread MRAB
On 2016-03-18 00:56, Michael Felt wrote: Update: Is this going to be impossible? From what I've been able to find out, the C89 standard limits bitfields to int, signed int and unsigned int, and the C99 standard added _Bool, although some compilers allow other integer types too. It looks like

Re: [Python-Dev] What does a double coding cookie mean?

2016-03-19 Thread Serhiy Storchaka
On 17.03.16 21:11, Guido van Rossum wrote: This will raise SyntaxError if the encoding is unknown. That needs to be caught in mypy's case and then it needs to get the line number from the exception. Good point. "lineno" and "offset" attributes of SyntaxError is set to None by

Re: [Python-Dev] PEP 515: Underscores in Numeric Literals (revision 3)

2016-03-19 Thread Georg Brandl
I'll update the text so that the format() gets promoted from optional to specified. There was one point of discussion in the tracker issue that should be resolved before acceptance: the Decimal constructor is listed as getting updated to allow underscores, but its syntax is specified in the

Re: [Python-Dev] What does a double coding cookie mean?

2016-03-19 Thread M.-A. Lemburg
On 17.03.2016 18:53, Serhiy Storchaka wrote: > On 17.03.16 19:23, M.-A. Lemburg wrote: >> On 17.03.2016 15:02, Serhiy Storchaka wrote: >>> On 17.03.16 15:14, M.-A. Lemburg wrote: On 17.03.2016 01:29, Guido van Rossum wrote: > Should we recommend that everyone use

Re: [Python-Dev] What does a double coding cookie mean?

2016-03-19 Thread Serhiy Storchaka
On 19.03.16 19:36, Glenn Linderman wrote: On 3/19/2016 8:19 AM, Serhiy Storchaka wrote: On 16.03.16 08:03, Serhiy Storchaka wrote: I just tested with Emacs, and it looks that when specify different codings on two different lines, the first coding wins, but when specify different codings on the

[Python-Dev] Summary of Python tracker Issues

2016-03-19 Thread Python tracker
ACTIVITY SUMMARY (2016-03-11 - 2016-03-18) Python tracker at http://bugs.python.org/ To view or respond to any of the issues listed below, click on the issue. Do NOT respond to this message. Issues counts and deltas: open5459 ( +5) closed 32885 (+43) total 38344 (+48) Open issues

Re: [Python-Dev] What does a double coding cookie mean?

2016-03-19 Thread Serhiy Storchaka
On 17.03.16 21:11, Guido van Rossum wrote: I tried this and it was too painful, so now I've just changed the regex that mypy uses to use non-eager matching (https://github.com/python/mypy/commit/b291998a46d580df412ed28af1ba1658446b9fe5). \s* matches newlines. {0,1}? is the same as ??.

Re: [Python-Dev] What does a double coding cookie mean?

2016-03-19 Thread M.-A. Lemburg
On 17.03.2016 15:55, Guido van Rossum wrote: > On Thu, Mar 17, 2016 at 5:04 AM, Serhiy Storchaka wrote: >>> Should we recommend that everyone use tokenize.detect_encoding()? >> >> Likely. However the interface of tokenize.detect_encoding() is not very >> simple. > > I just

Re: [Python-Dev] What does a double coding cookie mean?

2016-03-19 Thread Serhiy Storchaka
On 16.03.16 08:03, Serhiy Storchaka wrote: On 15.03.16 22:30, Guido van Rossum wrote: I came across a file that had two different coding cookies -- one on the first line and one on the second. CPython uses the first, but mypy happens to use the second. I couldn't find anything in the spec or

Re: [Python-Dev] What does a double coding cookie mean?

2016-03-19 Thread M.-A. Lemburg
On 17.03.2016 01:29, Guido van Rossum wrote: > I've updated the PEP. Please review. I decided not to update the > Unicode howto (the thing is too obscure). Serhiy, you're probably in a > better position to fix the code looking for cookies to pick the first > one if there are two on the same line

Re: [Python-Dev] What does a double coding cookie mean?

2016-03-19 Thread Glenn Linderman
On 3/19/2016 2:37 PM, Serhiy Storchaka wrote: On 19.03.16 19:36, Glenn Linderman wrote: On 3/19/2016 8:19 AM, Serhiy Storchaka wrote: On 16.03.16 08:03, Serhiy Storchaka wrote: I just tested with Emacs, and it looks that when specify different codings on two different lines, the first coding

Re: [Python-Dev] bitfields - short - and xlc compiler

2016-03-19 Thread Andrew Barnert via Python-Dev
On Mar 17, 2016, at 18:35, MRAB wrote: > >> On 2016-03-18 00:56, Michael Felt wrote: >> Update: >> Is this going to be impossible? > From what I've been able to find out, the C89 standard limits bitfields to > int, signed int and unsigned int, and the C99 standard

[Python-Dev] Make the warnings module extensible

2016-03-19 Thread Victor Stinner
Hi, I have an API question for you. I would like to add a new parameter the the showwarning() function of the warnings module. Problem: it's not possible to do that without breaking the backward compatibility (when an application replaces warnings.showwarning(), the warnings allows and promotes

Re: [Python-Dev] PEP 515: Underscores in Numeric Literals (revision 3)

2016-03-19 Thread Guido van Rossum
I don't care too much either way, but I think passing underscores to the constructor shouldn't be affected by the context -- the underscores are just removed before parsing the number. But if it's too complicated to implement I'm fine with punting. --Guido (mobile) On Mar 19, 2016 6:24 AM, "Nick

Re: [Python-Dev] What does a double coding cookie mean?

2016-03-19 Thread Glenn Linderman
On 3/16/2016 12:59 AM, Serhiy Storchaka wrote: On 16.03.16 09:46, Glenn Linderman wrote: On 3/16/2016 12:09 AM, Serhiy Storchaka wrote: On 16.03.16 08:34, Glenn Linderman wrote: From the PEP 263: More precisely, the first or second line must match the regular expression

[Python-Dev] PEP 484: updates to Python 2.7 signature syntax

2016-03-19 Thread Guido van Rossum
PEP 484 was already updated to support signatures as type comments in Python 2.7. I'd like to add two more variations to this spec, both of which have already come up through users. First, https://github.com/python/typing/issues/188. This augments the format of signature type comments to allow

Re: [Python-Dev] What does a double coding cookie mean?

2016-03-19 Thread Serhiy Storchaka
On 17.03.16 15:14, M.-A. Lemburg wrote: On 17.03.2016 01:29, Guido van Rossum wrote: Should we recommend that everyone use tokenize.detect_encoding()? I'd prefer a separate utility for this somewhere, since tokenize.detect_encoding() is not available in Python 2. I've attached an example

Re: [Python-Dev] PEP 515: Underscores in Numeric Literals (revision 3)

2016-03-19 Thread Stefan Krah
Guido van Rossum python.org> writes: > I don't care too much either way, but I think passing underscores to the constructor shouldn't be affected by the context -- the underscores are just removed before parsing the number. But if it's too complicated to implement I'm fine with punting. Just

Re: [Python-Dev] What does a double coding cookie mean?

2016-03-19 Thread Glenn Linderman
On 3/19/2016 8:19 AM, Serhiy Storchaka wrote: On 16.03.16 08:03, Serhiy Storchaka wrote: On 15.03.16 22:30, Guido van Rossum wrote: I came across a file that had two different coding cookies -- one on the first line and one on the second. CPython uses the first, but mypy happens to use the

Re: [Python-Dev] PEP 515: Underscores in Numeric Literals (revision 3)

2016-03-19 Thread Guido van Rossum
So should the preprocessing step just be s.replace('_', ''), or should it reject underscores that don't follow the rules from the PEP (perhaps augmented so they follow the spirit of the PEP and the letter of the IBM spec)? Honestly I think it's also fine if specifying this exactly is left out of

Re: [Python-Dev] PEP 515: Underscores in Numeric Literals (revision 3)

2016-03-19 Thread Brett Cannon
Where did this PEP leave off? Anything blocking its acceptance? On Sat, 13 Feb 2016 at 00:49 Georg Brandl wrote: > Hi all, > > after talking to Guido and Serhiy we present the next revision > of this PEP. It is a compromise that we are all happy with, > and a relatively

Re: [Python-Dev] What does a double coding cookie mean?

2016-03-19 Thread Stephen J. Turnbull
Glenn Linderman writes: > On 3/19/2016 8:19 AM, Serhiy Storchaka wrote: > > Therefore current CPython behavior can be correct, and the regular > > expression in PEP 263 should be changed to use greedy repetition. > > Just because emacs works that way (and even though I'm an emacs user),

Re: [Python-Dev] PEP 515: Underscores in Numeric Literals (revision 3)

2016-03-19 Thread Stefan Krah
Guido van Rossum python.org> writes: > So should the preprocessing step just be s.replace('_', ''), or should > it reject underscores that don't follow the rules from the PEP > (perhaps augmented so they follow the spirit of the PEP and the letter > of the IBM spec)? > > Honestly I think it's

Re: [Python-Dev] PEP 484: updates to Python 2.7 signature syntax

2016-03-19 Thread Andrew Barnert via Python-Dev
On Mar 19, 2016, at 18:18, Guido van Rossum wrote: > > Second, https://github.com/python/typing/issues/186. This builds on > the previous syntax but deals with the other annoyance of long > argument lists, this time in case you *do* care about the types. The > proposal is to

[Python-Dev] PEP 484 update: add Type[T]

2016-03-19 Thread Guido van Rossum
There's a more fundamental PEP 484 update that I'd like to add. The discussion is in https://github.com/python/typing/issues/107. Currently we don't have a way to talk about arguments and variables whose type is itself a type or class. The only annotation you can use for this is 'type' which says

[Python-Dev] PEP 484 update: allow @overload in regular module files

2016-03-19 Thread Guido van Rossum
Here's another proposal for a change to PEP 484. In https://github.com/python/typing/issues/72 there's a long discussion ending with a reasonable argument to allow @overload in (non-stub) modules after all. This proposal does *not* sneak in a syntax for multi-dispatch -- the @overload versions

Re: [Python-Dev] PEP 484: updates to Python 2.7 signature syntax

2016-03-19 Thread Guido van Rossum
Heh. I could add an example with a long list of parameters with long names, but apart from showing by example what the motivation is it wouldn't really add anything, and it's more to type. :-) On Sat, Mar 19, 2016 at 6:43 PM, Andrew Barnert wrote: > On Mar 19, 2016, at 18:18,

Re: [Python-Dev] PEP 515: Underscores in Numeric Literals (revision 3)

2016-03-19 Thread Guido van Rossum
All that sounds fine! On Sat, Mar 19, 2016 at 11:28 AM, Stefan Krah wrote: > Guido van Rossum python.org> writes: >> So should the preprocessing step just be s.replace('_', ''), or should >> it reject underscores that don't follow the rules from the PEP >> (perhaps