[Numpy-discussion] Determine if numpy is installed from an extension
David Cournapeau
cournape@gmail....
Wed Feb 3 03:41:54 CST 2010
On Wed, Feb 3, 2010 at 5:38 PM, Peter Notebaert <peno@telenet.be> wrote:
> >From an extension? How to import numpy from there and then test if that
> succeeded and that without any annoying message if possible...
One obvious solution would be to simply call PyImport_Import, something like:
#include <Python.h>
PyMODINIT_FUNC initfoo(void)
{
PyObject *m, *mod;
m = Py_InitModule("foo", NULL);
if (m == NULL) {
return;
}
mod = PyImport_ImportModule("numpy");
if (mod == NULL) {
return;
}
Py_DECREF(mod);
}
But I am not sure whether it would cause some issues if you do this
and then import the numpy C API (which is mandatory before using any C
functions from numpy). I know the python import system has some dark
areas, I don't know if that's one of them or not.
cheers,
David
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