[Numpy-discussion] question about the data entry in the __array_interface__

Chris Barker - NOAA Federal chris.barker at noaa.gov
Sun Apr 7 16:49:41 EDT 2013

On Sun, Apr 7, 2013 at 6:26 AM, Valentin Haenel <valentin at haenel.co> wrote:
> I am currently working with a C extension that wraps a C library.
> The library contains a function that takes, amongst others, a 'void *'
> as an argument. Now, I would like for that function to be able to read
> the 'data' buffer of a numpy array and thus need to pass address from
> Python down into the C-extension.

I can't help but put in a plug for Cython for this kind of thing:


Cython comes woth build-in support for numpy arrays, so they have
figured all this out for you.



Christopher Barker, Ph.D.

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Chris.Barker at noaa.gov

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