[Python-Dev] Semantics of __int__(), __index__()

Maciej Fijalkowski fijall at gmail.com
Tue Apr 2 10:58:58 CEST 2013

On Tue, Apr 2, 2013 at 10:53 AM, Mark Dickinson <dickinsm at gmail.com> wrote:
> On Tue, Apr 2, 2013 at 9:33 AM, Mark Shannon <mark at hotpy.org> wrote:
>> Hence my original question: what *should* the semantics be?
> I like Nick's answer to that: int *should* always return something of exact
> type int.  Otherwise you're always left wondering whether you have to do
> "int(int(x))", or perhaps even "int(int(int(x)))", to be absolutely sure of
> getting an int.
> The question is whether / how to fix the current behaviour, given that it
> doesn't conform to those ideal semantics.
> Mark

My 2 cents here is that which one is called seems to be truly random.
Try looking into what builtin functions call (for example list.pop
calls __int__, who knew)

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