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

Jeff Shannon jeff at ccvcorp.com
Tue Nov 11 22:43:03 EST 2003

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...

Jeff Shannon
Credit International

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