It is depending on the classes you try to compare, and on how the comparison functions (see http://docs.python.org/ref/customization.html) are implemented in these, see example below:
py> class wrong(object): ... def __init__(self, x): ... self.x = x ... def __cmp__(self, other): ... if self.x < other.x: ... return -1 ... else: ... return 1 ... py> class right(object): ... def __init__(self, x): ... self.x = x ... def __cmp__(self, other): ... if self.x < other.x: ... return -1 ... elif self.x > other.x: ... return 1 ... else: ... return 0 ... py> w1 = wrong(1) py> w2 = wrong(1) py> cmp(w1, w2) 1 py> py> r1 = right(1) py> r2 = right(1) py> cmp(r1, r2) 0 -- http://mail.python.org/mailman/listinfo/python-list
