Re: [Numpy-discussion] ctypes: how does load_library work ?

[Stefan v. d. W. <st...@su...>]

On Fri, Aug 18, 2006 at 01:54:44PM +0900, David Cournapeau wrote:
> import numpy as N
> from ctypes import cdll, POINTER, c_int, c_uint
>=20
> _hello =3D cdll.LoadLibrary('libhello.so')
>=20
> _hello.sum.restype    =3D c_int
> _hello.sum.artype     =3D [POINTER(c_int), c_uint]
>=20
> def sum(data):
>     return _hello.sum(data.ctypes.data_as(POINTER(c_int)), len(data))
>=20
> n       =3D 10
> data    =3D N.arange(n)
>=20
> print data
> print "sum(data) is " + str(sum(data))
>=20
>=20
> That works OK, but to avoid the platform dependency, I would like to us=
e=20
> load_library from numpy: I just replace the cdll.LoadLibrary by :
>=20
> _hello =3D N.ctypeslib.load_library('hello', '.')

Shouldn't that be 'libhello'?  Try

_hello =3D N.ctypes_load_library('libhello','__file__')

Cheers
St=E9fan