Hello, This (below) caught my eye and I'm wondering what further information is available? I very much value the ability to wrap underlying array data from numpy for processing in non-python libraries, as well as the ability to wrap numpy arrays around array data allocated by non-python libraries. Is this capability going to be removed? Gordon

Message: 6 Date: Sat, 11 Feb 2012 13:31:51 -0700 From: Charles R Harris <[email protected]> Subject: [Numpy-discussion] @Dag re numpy.pxd To: numpy-discussion <[email protected]> Message-ID: <CAB6mnxJVERqK64UpG3GOmaWDQHUn-z-=WJMQju0iU4KO9sefTg@mail.gmail.com> Content-Type: text/plain; charset="iso-8859-1"

Hi Dag,

This probably needs to be on the cython mailing list at some point, but I thought I'd start the discussion here. Numpy is going to begin deprecating direct access to ndarray/dtype internals, ala arr->data etc. There are currently macros/functions for many of these operations in the numpy development branch and I expect more to go in over the coming year. Also, some of the macros have been renamed. I don't know the best way for Cython to support this, but the current version (0.15 here) generates code that will fail if the deprecated things are excluded. Ideally, numpy.pxd would have numpy version dependent parts but I don't know if that is possible. In any case, I'd like your thoughts on the best way to coordinate this migration with Cython.

Chuck