Hello, I noticed that bultin types like list, set, dict, tuple don't seem to adhere to the convention of using super() in constructor to correctly allow diamond-shaped inheritance (through MRO). For instance:
>>> class A(object): ... def __init__(self): ... print "A.__init__" ... super(A, self).__init__() ... >>> class B(A, list): ... def __init__(self): ... print "B.__init__" ... super(B, self).__init__() ... >>> B.__mro__ (<class '__main__.B'>, <class '__main__.A'>, <type 'list'>, <type 'object'>) >>> B() B.__init__ A.__init__ [] >>> class C(list, A): ... def __init__(self): ... print "C.__init__" ... super(C, self).__init__() ... >>> C.__mro__ (<class '__main__.C'>, <type 'list'>, <class '__main__.A'>, <type 'object'>) >>> C() C.__init__ [] It seems weird to me that I have to swap the order of bases to get the expected behaviour. Is there a reason for this, or is it simply a bug that should be fixed? -- Giovanni Bajo -- http://mail.python.org/mailman/listinfo/python-list
