[Cython] Cython 0.16

Vitja Makarov vitja.makarov at gmail.com
Thu Nov 3 21:42:15 CET 2011


2011/11/4 mark florisson <markflorisson88 at gmail.com>:
> On 29 October 2011 17:40, Vitja Makarov <vitja.makarov at gmail.com> wrote:
>> 2011/10/29 Stefan Behnel <stefan_ml at behnel.de>:
>>> mark florisson, 28.10.2011 22:59:
>>>>
>>>> On 28 October 2011 21:55, Robert Bradshaw wrote:
>>>>>
>>>>> With Mark's fused types and memory views going in, I think it's about
>>>>> time for a new release.
>>>
>>> Agreed.
>>>
>>>
>>>>> Thoughts?
>>>
>>> I still haven't investigated the decorator issue that appeared in the Sage
>>> tests. I think it's related to decorators on module level def functions,
>>> which would suggest that it's best to eventually fix it as part of the
>>> function implementation changes that Vitja has started. But there may still
>>> be a simpler work-around somewhere that I'm not seeing yet.
>>>
>>
>> Recently I've implemented py3k-super and dynamic default args if we
>> have time. I would see this in release also.
>>
>> Can you please point me to sage decorators related failure?
>>
>>
>>> I basically broke the Sage tests by resolving a bug (593 IIRC), and both
>>> don't currently work together. So, a variant would be to revert my changes
>>> for 0.16 and just leave the bug in, if that keeps us from breaking existing
>>> code for now.
>>>
>>> But even leaving that out, the Sage tests look seriously broken currently:
>>>
>>> https://sage.math.washington.edu:8091/hudson/view/All/job/sage-tests/lastCompletedBuild/consoleFull
>>>
>>>
>>>> That'd be cool. However there are a few outstanding issues:
>>>>     a) the compiler is somewhat slower (possible solution: lazy utility
>>>> codes)
>>>>     b) there's a potential memory leak problem for memoryviews with
>>>> object dtype that contain themselves, this still needs investigation.
>>>>
>>>> As for a), Stefan mentioned code spending a lot of time in sub.
>>>> Stefan, could you post the code for this that made Cython compile very
>>>> slowly?
>>>
>>> At the time, I just ran cProfile on runtests.py with something like
>>> "withstat with_stat" or so as tests - basically all with-statement related
>>> ones. It took about 20 seconds or so to build the utility code, just to
>>> throw it away unused afterwards. The compile/test run itself then took about
>>> 3 seconds.
>>>
>>
>>
>> --
>> vitja.
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>>
>
> With Vitja's super() ready and with fused classmethods and
> staticmethods ready, I think we're almost ready for a release. I also
> supported cdef class static methods (previously it gave compiler
> crashes).
>

That's nice. I've also implemented support for dynamic default args

http://trac.cython.org/cython_trac/ticket/674

I think it could be merged either.

> I think we should also merge pull requests 'casting to template
> pointer' (after a test is added), and probably 'Makefile: rework repo
> creation target' (although I haven't looked at it closely). I think
> cythonize() is also worth documenting better, as it's a pretty neat
> feature that should be more prominent and easier to find for users
> (including examples of some of the #distutils directives).
>



-- 
vitja.


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