[Tutor] Re: special object method for method calls?

Gonçalo Rodrigues op73418 at mail.telepac.pt
Wed Nov 12 06:24:50 EST 2003

On Tue, 11 Nov 2003 19:43:03 -0800, you wrote:

>Abel Daniel wrote:
>> Jeff Shannon  writes:
>>>def __getattr__(self, attr):
>>>     if iscallable(self.__dict__[attr]):
>>>         # do whatever here
>>>     return self.__dict__[attr]
>> This won't work. From http://python.org/doc/current/ref/attribute-access.html:
>>      "Note that if the attribute is found through the normal
>>      mechanism, __getattr__() is not called."
>> So calling self.__dict__[attr] in __getattr__ will result in a
>> KeyError.
>Hm, you're right.  That's odd, I'd have *sworn* that __getattr__() 
>could be used to intercept lookups of existing attributes.  Or at 
>least that *something* could be.  Unfortunately I don't have time to 
>track this down right now...

What you want is __getattribute__ which intercepts *every* attribute
lookup. It only works with *new-style* classes though.

With my best regards,
G. Rodrigues

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