list modification subclassing

[manstey]

Hi,

I have a simple subclass of a list:

class CaListOfObj(list):
    """ subclass of list """
    def __init__(self, *args, **kwargs):
        list.__init__(self, *args, **kwargs)

a= CaListOfObj([1,2,3])

How do I write a method that does something EVERY time a is modified?

Thanks

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