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

Bernhard Herzog bh at intevation.de
Thu Feb 16 20:59:10 CET 2006

"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 PyNumber_index.

Bernhard

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