Re: [Numpy-discussion] Fwd: PyArray_DescrConverter segfault

Robert, If I import numpy and then import a 3rd party extension module, why does the extension module still have to call import_array if numpy sets this array in the first place? I assume that there's a single array of API functions in a single python process with multiple extension modules. Igor. On Thu, Jan 1, 2009 at 4:11 PM, Robert Kern wrote:

On Thu, Jan 1, 2009 at 14:21, Igor Sylvester wrote:

...

I realize I need to call import_array() in the module initialization module. Why isn't this equivalent to importing numpy before importing my module?

In 3rd party extension modules, all of the PyArray_* API functions are actually #define macros pointing to an array of function pointers. import_array() imports numpy.core.multiarray and sets up this array. If you don't do this, then trying to call one of the PyArray_* functions will result in a segfault because it tries to dereference a pointer in the array that is not set up.

-- Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth." -- Umberto Eco _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion