#!/usr/local/bin/python2
class C(object):
  def __init__(self, name):
    self.name = name

  def __eq__(self, o):
    return self.name == o.name if isinstance(o, C) else NotImplemented

  def __hash__(self):
    return hash((C, self.name))

c = C(1)
c2 = C(1)
c3 = C(3)
d = {c: 1, c3: 3, c2: 2, 1: 3}
print d