I'm trying to validate a few python arguments. Until we get the new static typing in Python 3.0, what is the best way of going about this. Here is an example of what I am attempting: class A(object): @accepts(int, int, int) def __init__(a, b, c): pass class B(A): @accepts(int, int, int, int) def __init__(a, b, c, d): A.__init__(a, b, c) As you can see the decorator is nicely performing type checking of the inputs to my class, but I have to define all the arguments to the second class, which gets very nasty when I have multiple levels of inheritance. I can use kwargs with some success, but it's not quite as nice as the above approach for type checking. Essentially I want to pop one argument off the kwargs list and check it's type, then pass the remainder to it's parent, but do this in a very flexible and clean way as this scales. Any suggestions? Continue reading...
