[Numpy-discussion] Response to PEP suggestions

Darren Dale dd55 at cornell.edu
Thu Feb 17 11:39:18 EST 2005

On Thursday 17 February 2005 02:11 pm, Fernando Perez wrote:
>  The danger with:
> if mystr[0] in ('a','b','c'): ...
> is that if mystr is empty, this blows up.  Thanks to Python's acceptance of
> invalid indices in slices, I used
> if mystr[0:1] in ('a','b','c'): ...

Has Numeric or numarray considered allowing assignment to invalid indices? I 
sometimes miss being able to do this:

in order to get this:

I guess it is not consistent with the list operations in python, but it is a 
really handy shortcut for constructing arrays interactively.


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