[Python-Dev] Please comment on PEP 357 -- adding nb_index slot to PyNumberMethods (original) (raw)

Georg Brandl g.brandl at gmx.net
Fri Feb 17 11:00:26 CET 2006

Bernhard Herzog wrote:

"Travis E. Oliphant" <oliphant.travis at ieee.org> writes:

2) The index special method will have the signature

def index(self): return obj Where obj must be either an int or a long or another object that has the index special method (but not self). So int objects will not have an index method (assuming that ints won't return a different but equal int object). However: 4) A new operator.index(obj) function will be added that calls equivalent of obj.index() and raises an error if obj does not implement the special method. So operator.index(1) will raise an exception. I would expect operator.index to be implemented using PyNumberindex.

I'd expect that index won't be called on an int in the first place.

Georg

More information about the Python-Dev mailing list