Daryl Spitzer schrieb:
> The second assertion in the following code fails:
>
> class Value(object):
> def __init__(self, value):
> super(Value, self).__init__()
> self.value = value
> def __cmp__(self, other):
> if self.value > other.value: return 1
> if self.value < other.value: return -1
> return 0
>
> if __name__ == "__main__":
> v1 = Value('one')
> v2 = Value('one')
> assert v1 == v2
> s1 = set([v1])
> s2 = set([v2])
> assert s1 == s2
>
> Is there any way to compare the two sets so that __cmp__ is called (I
> guess this would be called a deep comparison) rather than just
> (shallowly) comparing each object in the set?
You need to overload the __hash__-method as well.
def __hash__(self):
return hash(self.value)
Diez
--
http://mail.python.org/mailman/listinfo/python-list
