[Numpy-discussion] Inconsistency in dtype.arrdescr?

Travis Oliphant oliphant.travis at ieee.org
Mon Jan 16 12:08:01 CST 2006


Francesc Altet wrote:

>Hi,
>
>I find the next a bit misleading:
>  
>
>>>>numpy.array((3,), dtype='u4').dtype.arrdescr
>>>>        
>>>>
>[('', '<u4')]
>
>but...
>
>  
>
>>>>numpy.zeros((3,), dtype='u4,u2').dtype.arrdescr
>>>>        
>>>>
>[('f1', '<u4'), ('f2', '<u2')]
>
>I think it would be more consistent if the former expression would give
>as output:
>
>[('f1', '<u4')]
>
>  
>
The problem is these are two separate circumstances.  In the first case 
you have no fields defined and so no field names.   In the second case, 
you have two fields which receive default field names.

-Travis






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