# [PYTHON MATRIX-SIG] Bug

**Konrad Hinsen
**
hinsen@ibs.ibs.fr

*Fri, 25 Oct 96 10:21:56 +0100*

>* > and disallowing any
*>* > array-specific operations (especially indexing) on them, to make
*>* > them act just like scalar types?
*>*
*>* This sounds like a good idea in general. The one problem here is that I do
*>* want to provide some way to get the python value out of a scalar. This is
*>* currently done by scalar[0]. This could also be done by scalar.tolist() I
*>* suppose. I'd hate to add a special method just for this one highly unusual
*>* operation.
*
But scalar[0] is inconsistent - you can't index without having an axis.
The proper way to pick something from a rank-0 array (assuming we
want them to exist and behave like arrays) would be scalar[NewAxis][0]
or scalar.flat[0].
However, I see no reason for such trickery. If we decide to make rank-0
arrays act just like scalars, then the obvious way to extract a
"real" scalar would be int(scalar), float(scalar) etc.
Konrad.
--
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Konrad Hinsen | E-Mail: hinsen@ibs.ibs.fr
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