You could probably also do this as a factory function, rather than as a class (also untested!):
def Wrapper(func): def wrapped(self, *args, **kwargs): s, r = func(self, *args, **kwargs) if s != 'OK': raise NotOK((s,r)) return r return wrapped
I believe that this will be semantically almost equivalent, but conceptually slightly simpler.
Jeff Shannon
This is a nice example. I have used sub-functions (functions within functions) recently with some code, but I've wondered how proper it is to do this. Is this type of thing frowned upon?
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