[Numpy-discussion] Response to PEP suggestions

konrad.hinsen at laposte.net konrad.hinsen at laposte.net
Sat Feb 19 14:57:23 EST 2005

On 19.02.2005, at 15:28, Robert Kern wrote:

> Except that these types probably can't be derived from the builtin  
> int. The C layouts would have to be compatible. They'd probably have  
> to be a separate hierarchy.

They could all derive from a common (yet-to-be-written) base class that  
has no data layout at all.

> True. However, if we introduce a bona fide TypeObject hierarchy for  
> numerical scalars that *can* be profitably used outside of the array  
> context, it's *going* to be used outside of the array context. If it  
> gets into the

True, though I expect its use to be limited to the numeric community.

>  standard library, it can't just be a large number hierarchy for our  
> use; it will have to be *the* number hierarchy for Python and include  
> PyLongObjects and decimals and rationals.

That would be preferable indeed.

> And that's probably a bit more than we care to deal with to get  
> multiarrays into the core.

It all depends on the reaction of the Python developer community. We  
won't know before asking.

Konrad Hinsen
Laboratoire Leon Brillouin, CEA Saclay,
91191 Gif-sur-Yvette Cedex, France
Tel.: +33-1 69 08 79 25
Fax: +33-1 69 08 82 61
E-Mail: khinsen at cea.fr

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