[issue11988] special method lookup docs don't address some important details

R. David Murray report at bugs.python.org
Tue May 3 23:43:41 CEST 2011


R. David Murray <rdmurray at bitdance.com> added the comment:

Well, then I suppose my question is why isn't __contains__ looked up?  Other special methods that don't exist on Y do cause __getattr__ to be called.  Why is __contains__ special?  The docs for __getattr__ don't hint at this possibility either.

I think the people that understand this must have a mental model of how the interpreter looks up methods that has some pieces that are missing from mine.  I guess I'd like those bits to be made explicit in the special method lookup docs, or if they are already documented somewhere, for there to be a pointer to them in the special method lookup docs.

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