[Python-Dev] Re: REPL output bug

> On 16 Jun 2020, at 08:51, Greg Ewing wrote: > > On 16/06/20 12:20 pm, Steven D'Aprano wrote: >> The whole point of the REPL is to evaluate an >> expression and have the result printed. (That's the P in REPL :-) > > Still, it's a bit surprising that it prints results of > expressions within a

Re: [Python-Dev] Compact ordered set

> On 2019-02-28, at 12:56 , Antoine Pitrou wrote: > > On Thu, 28 Feb 2019 22:43:04 +1100 > Steven D'Aprano wrote: >> On Wed, Feb 27, 2019 at 02:15:53PM -0800, Barry Warsaw wrote: >> >>> I’m just relaying a data point. Some Python folks I’ve worked with do >>> make the connection between

Re: [Python-Dev] Micro-optimizations by adding special-case bytecodes?

> On 2017-05-24, at 20:26 , Xavier Morel <python-...@masklinn.net> wrote: > >> On 2017-05-24, at 20:07 , Ben Hoyt <benh...@gmail.com> wrote: >> >> Hi folks, >> >> I was looking at some `dis` output today, and I was wondering if anyone has >&g

Re: [Python-Dev] Micro-optimizations by adding special-case bytecodes?

> On 2017-05-24, at 20:07 , Ben Hoyt wrote: > > Hi folks, > > I was looking at some `dis` output today, and I was wondering if anyone has > investigated optimizing Python (slightly) by adding special-case bytecodes > for common expressions or statements involving

Re: [Python-Dev] PyWeakref_GetObject() borrows its reference from... whom?

> On 2016-10-10, at 11:05 , Devin Jeanpierre wrote: > The term "borrowed" is supposed to imply a sensible scope during which you're > free to use the object, and weakrefs don't have that (except for what is > granted by the GIL), so this does sound wacky. I bet it was

Re: [Python-Dev] Bug in the DELETE statement in sqlite3 module

> On 2016-06-15, at 08:40 , ninostephen mathew wrote: > > Respected Developer(s), > while writing a database module for one of my applications in python I > encountered something interesting. I had a username and password field in my > table and only one entry which was

Re: [Python-Dev] [python-committers] How are we merging forward from the Bitbucket 3.5 repo?

On 2015-08-16, at 16:08 , Guido van Rossum gu...@python.org wrote: I presume the issue here is that Hg is so complicated that everyone knows a different subset of the commands and semantics. I personally don't know what the commands for cherry-picking a revision would be. graft I also

Re: [Python-Dev] How far to go with user-friendliness

On 2015-07-14, at 14:39 , Nick Coghlan ncogh...@gmail.com wrote: On 14 July 2015 at 22:06, Dima Tisnek dim...@gmail.com wrote: Thus the question, how far should Python go to detect possible erroneous user behaviour? Granted it is in tests only, but why not detect assrte, sasert, saster

Re: [Python-Dev] Improvements for Pathlib

On 2014-11-08, at 16:46 , Ionel Cristian Mărieș cont...@ionelmc.ro wrote: Hello, In the current incarnation Pathlib is missing some key features I need in my usecases. I want to contribute them but i'd like a bit of feedback on the new api before jumping to implementation. The four

Re: [Python-Dev] Improvements for Pathlib

On 2014-11-08, at 20:02 , Ionel Cristian Mărieș cont...@ionelmc.ro wrote: On Saturday, November 8, 2014, Xavier Morel python-...@masklinn.net wrote: Why would pathlib need to provide this when tempfile already does? with tempfile.NamedTemporaryFile(prefix='') as f: tmp

Re: [Python-Dev] Critical bash vulnerability CVE-2014-6271 may affect Python on *n*x and OSX

On 2014-09-27, at 00:11 , Cameron Simpson c...@zip.com.au wrote: On 26Sep2014 13:16, Antoine Pitrou solip...@pitrou.net wrote: On Fri, 26 Sep 2014 01:10:53 -0700 Hasan Diwan hasan.di...@gmail.com wrote: On 26 September 2014 00:28, Matěj Cepl mc...@cepl.eu wrote: Where does your faith that

Re: [Python-Dev] == on object tests identity in 3.x

On 2014-07-07, at 13:22 , Andreas Maier andreas.r.ma...@gmx.de wrote: While discussing Python issue #12067 (http://bugs.python.org/issue12067#msg222442), I learned that Python 3.4 implements '==' and '!=' on the object type such that if no special equality test operations are implemented

Re: [Python-Dev] Negative timedelta strings

On 2014-04-02, at 15:04 , Skip Montanaro s...@pobox.com wrote: On Wed, Apr 2, 2014 at 7:52 AM, M.-A. Lemburg m...@egenix.com wrote: print now() + RelativeDateTime(months=+1, day=1) 2014-05-01 14:49:05.83 I find this sort date arithmetic unintuitive, though I'm at a loss to come up with

Re: [Python-Dev] Negative timedelta strings

On 2014-03-28, at 17:19 , Skip Montanaro s...@pobox.com wrote: (*) As an aside (that is, this belongs in a separate thread if you want to discuss it), in my opinion, attempting to support ISO 8601 formatting is pointless without the presence of an anchor datetime. Otherwise how would you know

Re: [Python-Dev] Reference cycles in Exception.__traceback__

On 2014-03-06, at 16:52 , Antoine Pitrou solip...@pitrou.net wrote: Le 06/03/2014 16:03, Yury Selivanov a écrit : On 2014-03-06, 8:42 AM, Antoine Pitrou wrote: Le 05/03/2014 23:53, Nick Coghlan a écrit : __traceback__ wouldn't change [...] Uh, really? If you want to suppress all

Re: [Python-Dev] Reference cycles in Exception.__traceback__

On 2014-03-06, at 19:32 , Guido van Rossum gu...@python.org wrote: But inspect is in the stdlib. Surely changing inspect.py is less controversial than amending the semantics of frame objects. I've no idea, I'm just giving a case where I could have used the ability to create traceback objects

Re: [Python-Dev] RFC: PEP 460: Add bytes % args and bytes.format(args) to Python 3.5

On 2014-01-06, at 14:44 , Antoine Pitrou solip...@pitrou.net wrote: Then, the following points must be decided to define the complete list of supported features (formatters): * Format integer to hexadecimal? ``%x`` and ``%X`` * Format integer to octal? ``%o`` * Format integer to binary?

Re: [Python-Dev] Bug? http.client assumes iso-8859-1 encoding of HTTP headers

On 2014-01-04, at 17:24 , Chris Angelico ros...@gmail.com wrote: On Sun, Jan 5, 2014 at 2:36 AM, Hugo G. Fierro h...@gfierro.com wrote: I am trying to download an HTML document. I get an HTTP 301 (Moved Permanently) with a UTF-8 encoded Location header and http.client decodes it as

Re: [Python-Dev] PEP 428 - pathlib - ready for approval

On 2013-11-20, at 17:09 , Guido van Rossum gu...@python.org wrote: On Wed, Nov 20, 2013 at 6:01 AM, Ethan Furman et...@stoneleaf.us wrote: On 11/20/2013 04:25 AM, Garth Bushell wrote: I'm also quite uneasy on the case insensitive comparison on Windows as the File system NTFS is case

Re: [Python-Dev] Context management patterns

On 2013-10-19, at 08:38 , Nick Coghlan wrote: The above example, especially if extended beyond two files, begs to used in a loop, like your 5 line version: for name in (somefile.tmp, someotherfile.tmp): with suppress(FileNotFoundError): os.remove(name) which would

Re: [Python-Dev] On suppress()'s trail blazing (was Re: cpython: Rename contextlib.ignored() to contextlib.ignore())

On 2013-10-17, at 18:06 , Barry Warsaw wrote: On Oct 18, 2013, at 01:26 AM, Nick Coghlan wrote: By contrast, suppress() and redirect_stdout() are the *first* general purpose context managers added to contextlib since its incarnation in Python 2.5 (although there have been many various domain

Re: [Python-Dev] On suppress()'s trail blazing (was Re: cpython: Rename contextlib.ignored() to contextlib.ignore())

On 2013-10-17, at 20:55 , Oscar Benjamin wrote: On 17 October 2013 19:40, Xavier Morel python-...@masklinn.net wrote: I think there's already a significant split between context managers which handle the lifecycle of a local resource (file, transaction) and those which purport to locally alter

Re: [Python-Dev] On suppress()'s trail blazing (was Re: cpython: Rename contextlib.ignored() to contextlib.ignore())

On 2013-10-17, at 22:11 , Ethan Furman wrote: On 10/17/2013 01:03 PM, Terry Reedy wrote: class suppress: def __init__(self, *exceptions): self.exceptions = exceptions def __exit__(self, etype, eval, etrace): return etype in self.exceptions This fails when etype is a

Re: [Python-Dev] Optimization

On 2013-10-06, at 12:37 , Stephen J. Turnbull wrote: For me, the point about string += being efficient (sometimes) isn't that it is surprising compared to similar types, it's that it is surprising for any immutable sequence type. It's clearly nitpicking, but ropes are immutable sequences

Re: [Python-Dev] summing integer and class

On 2013-10-03, at 15:45 , Igor Vasilyev wrote: Hi. Example test.py: class A(): def __add__(self, var): print(I'm in A class) return 5 a = A() a+1 1+a Execution: python test.py I'm in A class Traceback (most recent call last): File ../../test.py, line 7, in

Re: [Python-Dev] Why not support user defined operator overloading ?

On 2013-09-29, at 14:51 , 张佩佩 wrote: Hello: As far as I know, there is not a language support user defined operator overloading. Python3 can overloading belowed operators. - negated + unchanged - minus + add * multiplication / division //true

Re: [Python-Dev] Best practice for documentation for std lib

On 2013-09-22, at 12:16 , Nick Coghlan wrote: It's a bit of a pain, and we do occasionally get bug reports where the docstrings get out of date, but it's the least bad of the currently available options. Is it really less bad than allowing limited fine-grained use of autodoc? Not necessarily

Re: [Python-Dev] Best practice for documentation for std lib

On 22 Sep 2013, at 05:25, Benjamin Peterson benja...@python.org wrote: There's not really much to do but maintain them separately. Truncate the docstrings if it makes life easier. Autodoc could be enabled and allowed in a limited manner. ___

Re: [Python-Dev] Best practice for documentation for std lib

On 2013-09-22, at 21:24 , Westley Martínez wrote: From: gvanros...@gmail.com [mailto:gvanros...@gmail.com] On Behalf Of Guido van Rossum Sent: Sunday, September 22, 2013 11:35 AM You seem to misunderstand the use of autogeneration. It refers to generating the .rst docs from the

Re: [Python-Dev] Use an empty def as a lambda

On 2013-09-19, at 23:17 , Nick Coghlan wrote: On 20 Sep 2013 07:04, Joe Pinsonault joe.pinsona...@gmail.com wrote: I think it's a great idea personally. It's explicit and obvious. lamda is too computer sciencey This suggestion has been made many times, occasionally with the associated

Re: [Python-Dev] DTRACE support

On 2013-09-07, at 05:40 , Jesus Cea wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 06/09/13 20:33, Antoine Pitrou wrote: On Fri, 06 Sep 2013 18:14:26 +0200 Jesus Cea j...@jcea.es wrote: It is intrusive. Yes. I think it must be, by its own nature. Probably room for improvement

Re: [Python-Dev] DTRACE support

On 2013-09-06, at 19:05 , Antoine Pitrou wrote: On Fri, 06 Sep 2013 18:14:26 +0200 Jesus Cea j...@jcea.es wrote: Right now, I agree with Charles-François: your patch is too intrusive. It is intrusive. Yes. I think it must be, by its own nature. Probably room for improvement and code

Re: [Python-Dev] PEP 435: pickling enums created with the functional API

On 2013-05-07, at 17:03 , Nick Coghlan wrote: Specifically, what I'm talking about is some kind of implicit context similar to the approach the decimal module uses to control operations on Decimal instances. Wouldn't it be a good occasion to add actual, full-fledged and correctly implemented

Re: [Python-Dev] Why can't I encode/decode base64 without importing a module?

On 2013-04-25, at 11:25 , Antoine Pitrou wrote: Besides, I would consider a RFC more authoritative than a Wikipedia definition. Base encoding of data is used in many situations to store or transfer data in environments that, perhaps for legacy reasons, are restricted to US-ASCII [1] data.

Re: [Python-Dev] Semantics of __int__(), __index__()

On 2013-04-04, at 16:47 , Chris Angelico wrote: Sure, I could override __new__ to do stupid things Or to do perfectly logical and sensible things, such as implementing cluster classes or using the base class as a factory of sorts. in terms of logical expectations, I'd expect that Foo(x) will

Re: [Python-Dev] Semantics of __int__(), __index__()

On 2013-04-04, at 17:01 , Chris Angelico wrote: On Fri, Apr 5, 2013 at 1:59 AM, Guido van Rossum gu...@python.org wrote: On Thu, Apr 4, 2013 at 7:47 AM, Chris Angelico ros...@gmail.com wrote: Is there any argument that I can pass to Foo() to get back a Bar()? Would anyone expect there to be

Re: [Python-Dev] Semantics of __int__(), __index__()

On 2013-04-03, at 19:46 , Barry Warsaw wrote: On Apr 04, 2013, at 03:04 AM, Steven D'Aprano wrote: On 04/04/13 01:16, Barry Warsaw wrote: the other built-in types-as-functions, so int() calls __int__() which must return a concrete integer. Why must it? I think that's the claim which

Re: [Python-Dev] IDLE in the stdlib

On 2013-03-20, at 20:38 , Barry Warsaw wrote: On Mar 20, 2013, at 12:31 PM, Guido van Rossum wrote: Agreed that the sync into stdlib think should not happen, or should at best be a temporary measure until we can remove idle from the source tarball (maybe at the 3.4 release, otherwise at

Re: [Python-Dev] IDLE in the stdlib

On 2013-03-20, at 20:59 , Brian Curtin wrote: On Wed, Mar 20, 2013 at 2:51 PM, Xavier Morel python-...@masklinn.net wrote: That would be a blow to educators, but also Windows users: while the CLI works very nicely in unices, that's not the case with the win32 console which is as best as I can

Re: [Python-Dev] IDLE in the stdlib

On 2013-03-20, at 21:14 , Eli Bendersky wrote: Agreed that the sync into stdlib think should not happen, or should at best be a temporary measure until we can remove idle from the source tarball (maybe at the 3.4 release, otherwise at 3.5). Right. Ultimately, I think IDLE should be a

Re: [Python-Dev] Difference in RE between 3.2 and 3.3 (or Aaron Swartz memorial)

On 2013-03-07, at 11:08 , Matej Cepl wrote: On 2013-03-06, 18:34 GMT, Victor Stinner wrote: In short, Unicode was rewritten in Python 3.3 for the PEP 393. It's not surprising that minor details like singleton differ. You should not use is to compare strings in Python, or your program will

Re: [Python-Dev] cffi in stdlib

On 2013-02-27, at 14:31 , Antoine Pitrou wrote: Le Wed, 27 Feb 2013 12:15:05 +1300, Greg Ewing greg.ew...@canterbury.ac.nz a écrit : Antoine Pitrou wrote: Or we'll go straight to 5. (or switch to date-based numbering :-)) We could go the Apple route and start naming them after species of

Re: [Python-Dev] Usage of += on strings in loops in stdlib

On 2013-02-13, at 12:37 , Steven D'Aprano wrote: # even less obvious than sum map(operator.add, array) That one does not work, it'll try to call the binary `add` with each item of the array when the map iterator is reified, erroring out. functools.reduce(operator.add, array, '')

Re: [Python-Dev] Marking GC details as CPython-only

On 2013-02-13, at 19:48 , Maciej Fijalkowski wrote: Hi I've tried (and failed) to find what GC details (especially finalizer semantics) are CPython only and which ones are not. The best I could find was the documentation of __del__ here: http://docs.python.org/2/reference/datamodel.html

Re: [Python-Dev] Usage of += on strings in loops in stdlib

On 2013-02-12, at 22:40 , Ned Batchelder wrote: But the only reason .join() is a Python idiom in the first place is because it was the fast way to do what everyone initially coded as s += Just because we all learned a long time ago that joining was the fast way to build a string

Re: [Python-Dev] why do we allow this syntax?

On 2013-02-08, at 16:39 , Chris Withers wrote: Hi All, Just had a bit of an embarrassing incident in some code where I did: sometotal =+ somevalue I'm curious why this syntax is allowed? I'm sure there are good reasons, but thought I'd ask… sometotal = (expression) is valid syntax,

Re: [Python-Dev] why do we allow this syntax?

On 2013-02-08, at 18:45 , Chris Withers wrote: On 08/02/2013 16:17, Oscar Benjamin wrote: Decimal.__pos__ uses it to return a Decimal instance that has the default precision of the current Decimal context: from decimal import Decimal d = Decimal('0.33')

Re: [Python-Dev] Emacs users: hg-tools-grep

On 2012-12-12, at 15:12 , Ross Lagerwall wrote: On Wed, Dec 12, 2012 at 01:27:21PM +0200, Petri Lehtinen wrote: Brandon W Maister wrote: (defconst git-tools-grep-command git ls-files -z | xargs -0 grep -In %s The command used for grepping files using git. See `git-tools-grep'.) What's

Re: [Python-Dev] logging and rotation

On 2012-11-25, at 18:02 , Oleg Broytman wrote: On Sun, Nov 25, 2012 at 01:14:11PM +0100, Matthias Bernt matat...@gmx.de wrote: I'm using the logging module and write my log messages via the FileHandler. I just realized that using an external log rotation mechanism does not work. That is, new

Re: [Python-Dev] type vs. class terminology

On 2012-11-26, at 07:54 , Nick Coghlan wrote: On Mon, Nov 26, 2012 at 3:01 PM, Chris Jerdonek chris.jerdo...@gmail.comwrote: I would like to know when we should use class in the Python 3 documentation, and when we should use type. Are these terms synonymous in Python 3, and do we have a

Re: [Python-Dev] performance of {} versus dict()

On 2012-11-14, at 17:42 , Richard Oudkerk wrote: On 14/11/2012 4:23pm, Serhiy Storchaka wrote: PEP 8 recommends: a_dict = dict( x=1, y=2, z=3, ... ) and a_dict = { 'x': 1, 'y': 2, 'z': 3, ... } In which section? I can't see such a

Re: [Python-Dev] performance of {} versus dict()

On 2012-11-14, at 18:08 , Mark Adam wrote: That's not a recommendation to use the **kwargs style. And nobody said it was. It's a recommendation to not put spaces around the equals sign when using keyword arguments which is the correction Serhiy applied to the original code (along with adding a

Re: [Python-Dev] performance of {} versus dict()

On 2012-11-14, at 18:10 , Mark Adam wrote: Try the canonical {'x':1}. Only dict allows the special initialization above. Other collections require an iterable. Other collections don't have a choice, because it would often be ambiguous. Dicts do not have that issue. I'm guessing **kwargs

Re: [Python-Dev] performance of {} versus dict()

On 2012-11-14, at 19:54 , Mark Adam wrote: Merging of two dicts is done with dict.update. No, dict.update merges one dict (or two) into a third one. How do you do it on initialization? This doesn't make sense. dict(d1, **d2) ___ Python-Dev

Re: [Python-Dev] performance of {} versus dict()

On 2012-11-14, at 21:53 , Mark Adam wrote: On Wed, Nov 14, 2012 at 1:37 PM, Xavier Morel catch-...@masklinn.net wrote: On 2012-11-14, at 19:54 , Mark Adam wrote: Merging of two dicts is done with dict.update. No, dict.update merges one dict (or two) into a third one. No. I think you

Re: [Python-Dev] performance of {} versus dict(), de fmd(**kw): return kw trumps all ; -)

On 2012-11-14, at 23:43 , Chris Withers wrote: On 14/11/2012 22:37, Chris Withers wrote: On 14/11/2012 10:11, mar...@v.loewis.de wrote: def xdict(**kwds): return kwds Hah, good call, this trumps both of the other options: $ python2.7 -m timeit -n 100 -r 5 -v

Re: [Python-Dev] ctypes is not an acceptable implementation strategy for modules in the standard library?

On 2012-11-05, at 10:32 , Ronald Oussoren wrote: My arguments for ctypes: 1. doesn't require compilation 2. easier to maintain (no C/toolchain knowledge/ownership needed) 3. pure Python is impossible to exploit (unlike pure C) That's not not quite true, python code that uses ctypes can

Re: [Python-Dev] Sign of bytes

On 2012-10-31, at 18:44 , anatoly techtonik wrote: I wonder why Python uses signed chars for bytes http://docs.python.org/2/library/ctypes.html#ctypes.c_byte That's not Python, that's ctypes. struct[0] has no bytes it uses char for everything. If I had to guess, it would be because char is

Re: [Python-Dev] [BUG] Trailing spaces in pretty-printed JSON

On 2012-10-13, at 08:40 , Leo wrote: Use this script on a json file and observe all the trailing spaces generated. (screenshot attached.) 1. Why didn't you report that on the tracker? 2. Why are you rewriting json.tool? ___ Python-Dev mailing list

Re: [Python-Dev] Stdlib and timezones, again

On 2012-10-01, at 17:32 , Terry Reedy wrote: On 10/1/2012 10:06 AM, Lennart Regebro wrote: Actually, that's not a bad idea. My original idea was to warn if it *was* outdated, but since there is no way to check that, I scratched that idea. Is there really no way to get a 'last updated'

Re: [Python-Dev] Stdlib and timezones, again

On 2012-09-30, at 15:15 , Antoine Pitrou wrote: On Sun, 30 Sep 2012 15:10:06 +0200 Dirkjan Ochtman dirk...@ochtman.nl wrote: On Sun, Sep 30, 2012 at 3:03 PM, Antoine Pitrou solip...@pitrou.net wrote: Can't we simply include the Olson database in Windows installers? We probably can, but the

Re: [Python-Dev] 3.3 str timings

On 21 août 2012, at 19:25, Steven D'Aprano st...@pearwood.info wrote: On 21/08/12 23:04, Victor Stinner wrote: I don't like the timeit module for micro benchmarks, it is really unstable (default settings are not written for micro benchmarks). [...] I wrote my own benchmark tool, based on

Re: [Python-Dev] Introduction

On 2012-08-02, at 09:28 , Shanth Kumar wrote: Hi I am Shanthkumar from Bangalore, India, working for a software firm. Good to see the mailing group, as i am new to python curious to ask you people couple of queireis. I fear that is very likely the wrong mailing list for that: python-dev is

Re: [Python-Dev] backporting stdlib 2.7.x from pypy to cpython

On 2012-06-08, at 20:29 , Brett Cannon wrote: On Fri, Jun 8, 2012 at 2:21 PM, fwierzbi...@gmail.com fwierzbi...@gmail.com wrote: On Fri, Jun 8, 2012 at 10:59 AM, Brett Cannon br...@python.org wrote: R. David already replied to this, but just to reiterate: tests can always get updated, and

Re: [Python-Dev] Possible rough edges in Python 3 metaclasses (was Re: Language reference updated for metaclasses)

On 5 juin 2012, at 14:24, Nick Coghlan ncogh...@gmail.com wrote: On Tue, Jun 5, 2012 at 8:25 PM, Nick Coghlan ncogh...@gmail.com wrote: On Tue, Jun 5, 2012 at 7:11 PM, Michael Foord fuzzy...@voidspace.org.uk wrote: On 5 Jun 2012, at 08:53, Nick Coghlan wrote: [snip...] Now, one minor

Re: [Python-Dev] c/ElementTree XML serialisation

On 2012-05-09, at 01:41 , Alex Leach wrote: True. I might not need the CDATA tag to wrap the javascript then, but I still need and symbols. I have no idea how to write a loop in javascript without one. Erm… you have them? What do you think `lt;` and `gt;` are? As to writing a loop in

Re: [Python-Dev] Add a frozendict builtin type

On 2012-02-27, at 19:53 , Victor Stinner wrote: Rationale = A frozendict type is a common request from users and there are various implementations. There are two main Python implementations: * blacklist: frozendict inheriting from dict and overriding methods to raise an

Re: [Python-Dev] hash randomization in 3.3

On 2012-02-21, at 21:24 , Brett Cannon wrote: On Tue, Feb 21, 2012 at 15:05, Barry Warsaw ba...@python.org wrote: On Feb 21, 2012, at 02:58 PM, Benjamin Peterson wrote: 2012/2/21 Antoine Pitrou solip...@pitrou.net: Hello, Shouldn't it be enabled by default in 3.3? Yes. Should

Re: [Python-Dev] folding cElementTree behind ElementTree in 3.3

On 2012-02-20, at 12:36 , Eli Bendersky wrote: On Mon, Feb 20, 2012 at 01:12, Martin v. Löwis mar...@v.loewis.de wrote: The change of backing ElementTree by cElementTree has already been implemented in the default branch (3.3) by Florent Xicluna with careful review from me and others. etree

Re: [Python-Dev] folding cElementTree behind ElementTree in 3.3

On 2012-02-14, at 08:58 , Stefan Behnel wrote: These days, other Python implementations already provide the cElementTree module as a bare alias for ElementTree.py anyway, without emitting any warnings. Why should CPython be the only one that shouts at users for importing it? Since all

Re: [Python-Dev] Backwards incompatible sys.stdout.write() behavior in Python 3 (Was: [Python-ideas] Pythonic buffering in Py3 print())

On 2012-01-13, at 16:34 , anatoly techtonik wrote: Posting to python-dev as it is no more relates to the idea of improving print(). sys.stdout.write() in Python 3 causes backwards incompatible behavior that breaks recipe for unbuffered character reading from stdin on Linux -

Re: [Python-Dev] Backwards incompatible sys.stdout.write() behavior in Python 3 (Was: [Python-ideas] Pythonic buffering in Py3 print())

On 2012-01-13, at 17:19 , Antoine Pitrou wrote: -u forces line-buffering mode for stdout/stderr, which is already the default if they are wired to an interactive device (isattr() returning True). Oh, I had not noticed the documentation had changed in Python 3 (in Python 2 it stated that `-u`

Re: [Python-Dev] Python as a Metro-style App

On 2012-01-08, at 01:27 , Antoine Pitrou wrote: When you say MoveFile is absent, is MoveFileEx supported instead? WinRT strongly prefers asynchronous methods for all lengthy operations. The most likely call to use for moving files is StorageFile.MoveAsync.

Re: [Python-Dev] cpython (3.2): don't mention implementation detail

On 2011-12-20, at 11:08 , Antoine Pitrou wrote: But that's basically the only reason to invoke the `operator.attrgetter(foo)` ugliness, instead of writing the explicit and obvious `lambda x: x.foo`. I don't agree with this, an attrgetter in the current namespace can be clearer than an explicit

Re: [Python-Dev] Fixing the XML batteries

On 2011-12-14, at 20:41 , Stefan Behnel wrote: I meant: lack of interest in improving them. It's clear from the discussion that there are still users and that new code is still being written that uses MiniDOM. However, I would argue that this cannot possibly be performance critical code and

Re: [Python-Dev] Fixing the XML batteries

On 2011-12-11, at 23:03 , Martin v. Löwis wrote: People are still using PyXML, despite it's not being maintained anymore. Telling them to replace 4DOM with minidom is much more appropriate than telling them to rewrite in ET. From my understanding, Stefan's suggestion is mostly aimed at new

Re: [Python-Dev] [PATCH] Adding braces to __future__

On 2011-12-10, at 12:14 , francis wrote: (I thing that 'go' has some autoformater or a standard way of formatting). `gofmt` yes, it simply reformats all the code to match the style decided by the core go team, it does not provide support formatting- independent edition. Think of it as pep8.py

Re: [Python-Dev] Fixing the XML batteries

On 2011-12-09, at 09:41 , Martin v. Löwis wrote: a) The stdlib documentation should help users to choose the right tool right from the start. Instead of using the totally misleading wording that it uses now, it should be honest about the performance characteristics of MiniDOM and should

Re: [Python-Dev] Fixing the XML batteries

On 2011-12-09, at 19:15 , Bill Janssen wrote: I use ElementTree for parsing valid XML, but minidom for producing it. Could you expand on your reasons to use minidom for producing XML? ___ Python-Dev mailing list Python-Dev@python.org

Re: [Python-Dev] [PATCH] Adding braces to __future__

On 2011-12-09, at 21:26 , Cedric Sodhi wrote: IF YOU THINK YOU MUST REPLY SOMETHING WITTY, ITERATE THAT THIS HAD BEEN DISCUSSED BEFORE, REPLY THAT IT'S SIMPLY NOT GO'NNA HAPPEN, THAT WHO DOESN'T LIKE IT IS FREE TO CHOOSE ANOTHER LANGUAGE OR SOMETHING SIMILAR, JUST DON'T. Otherwise, read on.

Re: [Python-Dev] Deprecation policy

On 2011-11-28, at 10:30 , Raymond Hettinger wrote: On Oct 24, 2011, at 5:58 AM, Ezio Melotti wrote: How about we agree that actually removing things is usually bad for users. It will be best if the core devs had a strong aversion to removal. Instead, it is best to mark APIs as obsolete with a

Re: [Python-Dev] Deprecation policy

On 2011-11-28, at 13:06 , Nick Coghlan wrote: On Mon, Nov 28, 2011 at 7:53 PM, Xavier Morel catch-...@masklinn.net wrote: Not being too eager to kill APIs is good, but giving rise to this kind of living-dead APIs is no better in my opinion, even more so since Python has lost one of the few

Re: [Python-Dev] Long term development external named branches and periodic merges from python

On 2011-11-24, at 21:55 , Nick Coghlan wrote: I've never been able to get the Create Patch button to work reliably with my BitBucket repo, so I still just run hg diff -r default locally and upload the patch directly. Wouldn't it be simpler to just use MQ and upload the patch(es) from the

Re: [Python-Dev] Promoting Python 3 [was: PyPy 1.7 - widening the sweet spot]

On 2011-11-22, at 17:41 , Stephen J. Turnbull wrote: Barry Warsaw writes: Hopefully, we're going to be making a dent in that in the next version of Ubuntu. This is still a big mess in Gentoo and MacPorts, though. MacPorts hasn't done anything about ceating a transition infrastructure

Re: [Python-Dev] Promoting Python 3 [was: PyPy 1.7 - widening the sweet spot]

On 2011-11-23, at 04:51 , Stephen J. Turnbull wrote: Xavier Morel writes: On 2011-11-22, at 17:41 , Stephen J. Turnbull wrote: Barry Warsaw writes: Hopefully, we're going to be making a dent in that in the next version of Ubuntu. This is still a big mess in Gentoo and MacPorts, though

Re: [Python-Dev] order of Misc/ACKS

On 2011-11-12, at 10:24 , Georg Brandl wrote: Am 12.11.2011 08:03, schrieb Stephen J. Turnbull: Eli Bendersky writes: special locale. It makes me wonder whether it's possible to have a contradiction in the ordering, i.e. have a set of names that just can't be sorted in any order acceptable

Re: [Python-Dev] Hg tips

On 2011-09-29, at 12:07 , Victor Stinner wrote: * I disabled the merge GUI: I lose a lot of work because I'm unable to use a GUI to do merge, I don't understand what are the 3 versions of the same file (which one is the merged version!?) Generally none. By default, mercurial (and most

Re: [Python-Dev] Hg tips

On 2011-09-29, at 12:50 , Victor Stinner wrote: Le 29/09/2011 12:34, Xavier Morel a écrit : Generally none. By default, mercurial (and most similar tools) sets up LOCAL, BASE and OTHER. BASE is the... Sorry, but I'm unable to remember the meaning of LOCAL, BASE and OTHER. In meld, I have

Re: [Python-Dev] Heads up: Apple llvm gcc 4.2 miscompiles PEP 393

On 2011-09-28, at 13:24 , mar...@v.loewis.de wrote: The gcc that Apple ships with the Lion SDK (not sure what Xcode version that is) Xcode 4.1 I'm not aware of a work-around in the code. My work-around is to use gcc-4.0, which is still available on my system from an earlier Xcode

Re: [Python-Dev] Heads up: Apple llvm gcc 4.2 miscompiles PEP 393

On 2011-09-28, at 19:49 , Martin v. Löwis wrote: Thanks for the advise - I didn't expect that Apple ships thhree compilers… Yeah I can understand that, they're in the middle of the transition but Clang is not quite there yet so... ___ Python-Dev

Re: [Python-Dev] range objects in 3.x

On 2011-09-23, at 20:23 , Guido van Rossum wrote: Also, Ethan, I hope you're familiar with the reason why there is no range() support for floats currently? (Briefly, things like range(0.0, 0.8, step=0.1) could include or exclude the end point depending on rounding, which makes for troublesome

Re: [Python-Dev] PEP 393 Summer of Code Project

On 2011-08-23, at 10:55 , Martin v. Löwis wrote: - “The UTF-8 decoding fast path for ASCII only characters was removed and replaced with a memcpy if the entire string is ASCII.” The fast path would still be useful for mostly-ASCII strings, which are extremely common (unless UTF-8 has

Re: [Python-Dev] PEP 3154 - pickle protocol 4

On 2011-08-12, at 12:58 , Antoine Pitrou wrote: Current protocol versions export object sizes for various built-in types (str, bytes) as 32-bit ints. This forbids serialization of large data [1]_. New opcodes are required to support very large bytes and str objects. How about changing object

Re: [Python-Dev] GIL removal question

On 2011-08-11, at 21:11 , Sturla Molden wrote: (b) another threading model (e.g. one interpreter per thread, as in Tcl, Erlang, or .NET app domains). Nitpick: this is not correct re. erlang. While it is correct that it uses another threading model (one could even say no threading model),

Re: [Python-Dev] GIL removal question

On 2011-08-12, at 20:59 , Sturla Molden wrote: Den 12.08.2011 18:51, skrev Xavier Morel: * Erlang uses erlang processes, which are very cheap preempted *processes* (no shared memory). There have always been tens to thousands to millions of erlang processes per interpreter source contention

Re: [Python-Dev] Python 3.x and bytes

On 2011-05-19, at 07:28 , Georg Brandl wrote: On 19.05.2011 00:39, Greg Ewing wrote: Ethan Furman wrote: some_var[3] == b'd' 1) a check to see if the bytes instance is length 1 2) a check to see if i) the other object is an int, and 2) 0 = other_obj 256 3) if 1 and 2, make the

Re: [Python-Dev] Python 3.x and bytes

On 2011-05-19, at 09:49 , Nick Coghlan wrote: On Thu, May 19, 2011 at 5:10 AM, Eric Smith e...@trueblade.com wrote: On 05/18/2011 12:16 PM, Stephen J. Turnbull wrote: Robert Collins writes: Its probably too late to change, but please don't try to argue that its correct: the continued

Re: [Python-Dev] Python 3.x and bytes

On 2011-05-19, at 11:25 , Łukasz Langa wrote: Wiadomość napisana przez Stefan Behnel w dniu 2011-05-19, o godz. 10:37: But why wouldn't they expect `b'de' + 1` to work as well in this case? If a 1-byte bytes is equivalent to an integer, why not an arbitrary one as well? The result of

Re: [Python-Dev] Linus on garbage collection

On 2011-05-07, at 03:39 , Glyph Lefkowitz wrote: I don't know if there's a programming language and runtime with a real-time, VM-cooperating garbage collector that actually exists today which has all the bells and whistles required to implement an OS kernel, so I wouldn't give the Linux

Re: [Python-Dev] Status of json (simplejson) in cpython

On 2011-04-16, at 16:52 , Antoine Pitrou wrote: Le samedi 16 avril 2011 à 16:42 +0200, Dirkjan Ochtman a écrit : On Sat, Apr 16, 2011 at 16:19, Antoine Pitrou solip...@pitrou.net wrote: What you're proposing doesn't address the question of who is going to do the ongoing maintenance. Bob

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