[Numpy-discussion] please comment on scalar types
oliphant.travis at ieee.org
Mon Aug 14 20:18:04 CDT 2006
Sebastian Haase wrote:
> I have a record array with a field 'mode'
> Mode is a small integer that I use to choose a "PixelType"
> So I did:
>>>> print PixelTypes[ mode ]
> TypeError: tuple indices must be integers
> -> return PixelTypes[ mode ]
> (Pdb) p mode
> (Pdb) p type(mode)
> <type 'int32scalar'>
> (Pdb) p isinstance(mode, int)
> Since numpy introduced special scalar types a simple statement like this
> doesn't work anymore ! Would it work if int32scalar was derived from int ? I
> actually thought it was ...
It does sub-class from int unless you are on a system where a c-long is
64-bit then int64scalar inherits from int.
On my 32-bit system:
isinstance(array([1,2,3]),int) is true.
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