gistfile1.py

#!/usr/bin/python

class Test(object):
    def __init__(self, a):
        self.a = a
    def __eq__(self, other):
        print "__eq__(%i, %i)" % (self.a, other.a)
        return self.a == other.a
    def __ne__(self, other):
        print "__ne__(%i, %i)" % (self.a, other.a)
        return not (self == other)

>>> [Test(1)] == [Test(2)]
__eq__(1, 2)
False
>>> [Test(1)] != [Test(2)]
__eq__(1, 2)
True