Bruce wrote:
>>>> class A:
> ... def __init__(self):
> ... self.t = 4
> ... self.p = self._get_p()
> ... def _get_p(self):
> ... return self.t
> ...
>>>> a = A()
>>>> a.p
> 4
>>>> a.t += 7
>>>> a.p
> 4
>
> 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]
if __name__ == "__main__":
a=A()
print a.p
a.t+=7
print a.p
--
http://mail.python.org/mailman/listinfo/python-list
