1236         class MySet(Set):  class
1243         self.validate_comparison(MySet())
1261         class MySet(Set):  class
1270         s1 = MySet((1, 2, 3))
1271         s2 = MySet((4, 5, 6))
1272         s3 = MySet((1, 5, 6))
1277         class MySet(Set):  class
1286         s1 = MySet((1,))
1287         s2 = MySet((1, 2))
1288         s3 = MySet((3, 4))
1289         s4 = MySet((3, 4))
1299         class MySet(Set):  class
1308         s1 = MySet((1, 2, 3))
1309         s2 = MySet((3, 4, 5))
1311         self.assertEqual(s3, MySet((3,)))
1329         class MySet(MutableSet):  class
1351         s = MySet([5,43,2,1])