[Python-Dev] Fixing _PyEval_SliceIndex so that integer-like objects can be used

[Travis Oliphant]

Hello again,

There is a great discussion going on the numpy list regarding a proposed 
PEP for multidimensional arrays that is in the works.

During this discussion as resurfaced regarding slicing with objects that 
are not IntegerType objects but that
have a tp_as_number->nb_int method to convert to an int. 

Would it be possible to change

_PyEval_SliceIndex  in ceval.c

so that rather than throwing an error if the indexing object is not an 
integer, the code first checks to see if the object has a
tp_as_number->nb_int method and calls it instead.

If this is acceptable, it is an easy patch.

Thanks,

-Travis Oliphant