[Numpy-discussion] arr.dtype.kind is 'i' for dtype=unit !?
Albert Strasheim
fullung at gmail.com
Tue Sep 19 13:39:23 EDT 2006
Hello all
> -----Original Message-----
> From: numpy-discussion-bounces at lists.sourceforge.net [mailto:numpy-
> discussion-bounces at lists.sourceforge.net] On Behalf Of Sebastian Haase
> Sent: 19 September 2006 19:24
> To: Discussion of Numerical Python
> Subject: [Numpy-discussion] arr.dtype.kind is 'i' for dtype=unit !?
>
> Hi,
> What are the possible values of
> arr.dtype.kind ?
>
> It seems that signed and unsigned are considered to be the same "kind"
> >>> arr=N.arange(10,dtype=N.uint)
> >>> arr.dtype.kind
> 'i'
> >>> arr.dtype.itemsize
> 8
> (OK - this is just showing off our amd64 linux ;-) )
>
> How can I distinguish signed from unsigned without having to list all
> possible
> cases explicitly ?
How about sctypes?
In [16]: numpy.sctypes.keys()
Out[17]: ['int', 'float', 'uint', 'complex', 'others']
So this should work:
sometype in numpy.sctypes['uint']
sometype in numpy.sctypes['int']
Cheers,
Albert
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