[Python-Dev] cffi in stdlib

[Maciej Fijalkowski]

On Tue, Dec 17, 2013 at 7:21 PM, Brett Cannon <brett at python.org> wrote:
> Maybe someone from PyPy should bring this up as an official topic at the
> language summit to figure out the blockers (again). Or it can join regex on
> the list of "module discussed for addition at the language summit but never
> quite pushed to commitment". =)

we're still working on resolving discussed issues before officially
proposing it for inclusion.

>
>
> On Tue, Dec 17, 2013 at 11:43 AM, Stefan Krah <stefan at bytereef.org> wrote:
>>
>> Maciej Fijalkowski <fijall at gmail.com> wrote:
>> > I would like to discuss on the language summit a potential inclusion
>> > of cffi[1] into stdlib. This is a project Armin Rigo has been working
>> > for a while, with some input from other developers.
>>
>> I've tried cffi (admittedly only in a toy script) and find it very nice
>> to use.
>>
>> Here's a comparison (pi benchmark) between wrapping libmpdec using a
>> C-extension (_decimal), cffi and ctypes:
>>
>>
>> +-------------------------------+----------+----------+---------+
>> |                               | _decimal |  ctypes  |   cffi  |
>> +===============================+==========+==========+=========+
>> | cpython-tip (with-system-ffi) |   0.19s  |   5.40s  |  5.14s  |
>> +-------------------------------+----------+----------+---------+
>> | cpython-2.7 (with-system-ffi) |    n/a   |   4.46s  |  5.18s  |
>> +-------------------------------+----------+----------+---------+
>> |      Ubuntu-cpython-2.7       |    n/a   |   3.63s  |    -    |
>> +-------------------------------+----------+----------+---------+
>> |      pypy-2.2.1-linux64       |    n/a   |  125.9s  |  0.94s  |
>> +-------------------------------+----------+----------+---------+
>> |     pypy3-2.1-beta1-linux64   |    n/a   |  264.9s  |  2.93s  |
>> +-------------------------------+----------+----------+---------+
>>
>>
>> I guess the key points are that C-extensions are hard to beat and that
>> cffi performance on pypy-2 is outstanding. Additionally it's worth noting
>> that Ubuntu does something in their Python build that we should do, too.
>>
>>
>> +1 for cffi in the stdlib.
>>
>>
>>
>> Stefan Krah
>>
>>
>>
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>
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