[Numpy-discussion] switching from Numeric to numpy

Raul Cota raul at virtualmaterials.com
Fri Oct 18 16:34:44 EDT 2013


Just noticed this message,

We are already cleaning up all of our code to not be numpy based but for 
porting from Numeric to numpy:

In our C code we settled for the following,

#define NUMPY

#if !defined(NUMPY)
     #include "arrayobject.h"
     #include "numpy/oldnumeric.h"

And this,

#ifdef NUMPY
     pyArray = (PyArrayObject *) PyArray_SimpleNew( 1, dims, 
     pyArray = (PyArrayObject *) PyArray_FromDims( 1, dims, PyArray_DOUBLE);

And I think that was all the changes we needed and while we were 
transitioning we could easily compile for Numeric or numpy.

Most of our headaches were on the python code because of very subtle 
things but even there, the bulk of the changes worked out rather nicely 
using the oldnumeric stuff.


On 07/10/2013 5:27 PM, john fernando wrote:
> I have the following C code which is an extension to my python code.
> The python and C code use
> #include <Numeric/arrayobject.h>
> what is the equivalent I can use in numpy that causes the minimum code change?
> I did look through the old messages but didn't really find the answer-any help to a novice just starting out in numpy/python/C is much appreciated.
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