gistfile1.txt

    def __eq__(self, other):
        _NOTFOUND = object()
        for attr in ['user', 'street', 'street2', 'city', 'region', 'zip', 'country']:
            v1, v2 = [getattr(obj, attr, _NOTFOUND) for obj in [self, other]]
            if v1 is _NOTFOUND or v2 is _NOTFOUND:
                return False
            elif v1 != v2:
                return False
        return True