2010/10/14 Stéfan van der Walt <stefan@sun.ac.za>:

Hi all,

Is this behaviour correct?

In [18]: np.issubdtype(np.uint16, np.uint) Out[18]: False

Yes, it's correct. np.uint is a concrete type that is the platform-specific C unsigned long type: |1> np.uint <type 'numpy.uint32'> The abstract base type is np.unsignedinteger: |3> np.issubdtype(np.uint16, np.unsignedinteger) True -- 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