[Numpy-discussion] Properties of fields in numpy

Travis Oliphant oliphant at ee.byu.edu
Mon Feb 6 11:21:01 EST 2006

Francesc Altet wrote:

>I don't specially like the 'void*' typecasting that are receiving the
>types in fields in situations like:
>In [143]:dtype = numpy.dtype([
>   .....:    ('x', '<i4', (2,)),
>   .....:    ('Info',[
>   .....:        ('name', '<U120'),
>   .....:        ('weight', '<f4')])])
>In [147]:dtype.fields['x'][0].name
>were you can see that we have lost the information about the native type
>of the 'x' field. Rather, I'd expect something like:
Well, it's actually there.   Look at


The issue is that the base data-type of the 'x' field is void-64 (that's 
the dtype object the array "sees"). 


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