At Tuesday 19/12/2006 11:49, Larry Bates wrote:
> I would like to have it that when I ask for p, method _get_p is always
> called so that attribute can be updated. How can I have this
> functionality here? thanks
>
Something like this?
class A:
def __init__(self):
self.t=4
return
def __getattr__(self, name):
if name == 'p': return self.t
else: return self.__dict__[name]
__getattr__ is called *after* normal lookup has failed, so using
__dict__ here is useless (and wrong, because this method should raise
AttributeError but will raise KeyError instead)
A property is more convenient in this case.
--
Gabriel Genellina
Softlab SRL
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