Neal Norwitz wrote:
> [Georg]
> This is modeled after the principle that for new-style objects, __special__
> methods are looked up on the type, not the instance.
>
> -----
>
> 1) I didn't remember this, do we have it documented somewhere?
> 2) Assuming #1 is correct, is this rule consistently applied?
> 3) How does (should) this affect 2.6 and migration to 3.0, if at all?
The principle isn't consistently applied - the with statement generates
standard GET_ATTR opcodes, so it checks the instance first when looking
for __enter__ and __exit__.
It was questioned at the time, and Guido was OK with it - I believe his
position was that defining special methods on instances may or may not
affect behaviour, and whether or not it does so is implementation dependent.
Cheers,
Nick.
--
Nick Coghlan | [EMAIL PROTECTED] | Brisbane, Australia
---------------------------------------------------------------
http://www.boredomandlaziness.org
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