[Numpy-discussion] __array__struct__: about using PyCapsule instead of PyCObject for Python 2.7

[Charles R Harris]

On Wed, Jun 30, 2010 at 10:57 AM, Lisandro Dalcin <dalcinl at gmail.com> wrote:

> On 30 June 2010 02:48, Charles R Harris <charlesr.harris at gmail.com> wrote:
> >
> >
> > On Tue, Jun 29, 2010 at 8:21 PM, Lisandro Dalcin <dalcinl at gmail.com>
> wrote:
> >>
> >> Do we really need this for NumPy 2? What about using the old PyCObject
> >> for all Py 2.x versions? If this is not done, perhaps NumPy 2 on top
> >> of Py 2.x should still accept the __array_struct__ being a PyCObject?
> >>
> >> As reference, Cython still uses PyCObject for Py<3.1
> >> http://hg.cython.org/cython-devel/rev/8a58f1544bd8#l1.33 .
> >>
> >
> > Blame the Python 2.7 developers, those suckers deprecated the PyCObject.
> >
>
> Oh! Sorry! Now I realize that!
>
> > Grrr... I didn't see the point, myself, I'm tempted to deprecate 2.7 just
> to
> > get even. There are some routines in the numpy/core/src includes that you
> > might want to copy, they will allow you to use a common interface for
> > PyCObject and PyCapsule if you need to do that.
> >
>
> I've already fixed my code for PyCapsule. What's not clear to me is
> how to build (i.e, use the old cobject or the new capsules)
> __array_struct__ across NumPy and Python versions combinations. Will
> NumPy 1.x series ever support Python 2.7? In such case, should I use
> cobjects or capsules?
>
>
We do support 2.7, but with PyCapsule. You might want to take a look at f2py
also, as it also uses PyCapsule for Python >= 2.7.

<snip>

Chuck
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