On 11/09/2014 03:38 AM, Gregory Ewing wrote:
Ethan Furman wrote:
And the thing going on is the normal python behavior (in __getattribute__, I
believe) of examining the returned
attribute to see if it is a descriptor, and if so invoking it.
Only if you look it up through the instance, though.
Normally, if you look up an attribute on a class,
the descriptor protocol doesn't get triggered.
Hrmm, maybe we're not talking about the same thing. I was responding to your
comment:
(BTW, I'm actually surprised that this technique makes c callable.
There must be more going on that just "look up __call__ in the class
object", because evaluating C.__call__ just returns the descriptor
and doesn't invoking the descriptor mechanism.)
which seems to clash with what you just said.
--
~Ethan~
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