Bruno Desthuilliers wrote: > AFAIK, everything you do with old-style classes can be done with new-style > ones.
The only thing I occasionally (or rather rarely) miss about old-style classes is instance-specific special methods: >>> class C: ... def __init__(self,x): ... self.__getitem__ = lambda i: i*x ... >>> c=C(2) >>> c[3] 6 >>> class N(object): ... def __init__(self,x): ... self.__getitem__ = lambda i: i*x ... >>> n=N(2) >>> n[3] Traceback (most recent call last): File "<stdin>", line 1, in ? TypeError: unindexable object Of course this example can be rewritten to work for new style classes; a trickier would be to bind the instance attribute conditionally; here's a silly example: >>> class C: ... def __init__(self,x): ... if random.random() > 0.5: ... self.__getitem__ = lambda i: i*x I'm not sure if this is a conscious choice or a technical limitation of how new-style classes work internally, but I've had a use for it at least once. George -- http://mail.python.org/mailman/listinfo/python-list
