Hrvoje Niksic: > You're right. The OP states he implements __eq__, so he also needs a > matching __hash__, such as: > > def __hash__(self, other): > return (hash(self.xcoord) ^ hash(self.ycoord) ^ > hash(self.streetname) ^ hash(self.streetno))
The hash function by Otten is better because it considers the order of the items too (while I think the xor doesn't): return hash((self.xcoord, self.yccord, self.streetname, self.streetno)) Bye, bearophile -- http://mail.python.org/mailman/listinfo/python-list
