def test_redundant_multiple_bases():
 class Foo(list, object, ):
  pass
 class Bar(Foo, ):
  pass
 AreEqual(Bar(), [])

def test_redundant_multiple_bases ( ) : class Foo ( list , object , ) : pass class Bar ( Foo , ) : pass AreEqual ( Bar ( ) , [ ] )
specifying an extra base which is implied by a previous one should work ok .