1385         class MySet(Set):  class
1392         self.validate_comparison(MySet())
1410         class MySet(Set):  class
1419         s1 = MySet((1, 2, 3))
1420         s2 = MySet((4, 5, 6))
1421         s3 = MySet((1, 5, 6))
1426         class MySet(Set):  class
1435         s1 = MySet((1,))
1436         s2 = MySet((1, 2))
1437         s3 = MySet((3, 4))
1438         s4 = MySet((3, 4))
1448         class MySet(Set):  class
1457         s1 = MySet((1, 2, 3))
1458         s2 = MySet((3, 4, 5))
1460         self.assertEqual(s3, MySet((3,)))
1478         class MySet(MutableSet):  class
1500         s = MySet([5,43,2,1])