python extended slicing

[Greg Landrum]

I'm looking to implement a class which should behave like a 2D array,
so I'd like to be able to use extended slicing to make this go.
i.e. I'd like to be able to do:
  result = myInstance[0:-1,3:-1]
and the like and have it behave nicely.

I have figured out how to do this in __getitem__ and __setitem__,
but the code ends up being awfully long and non-pythonic (well, it
looks non-pythonic to me).

I was wondering if anyone knowns of an example of some good
__getitem__/__setitem__ code lying around that I could take a look
at.


thanks!
-greg



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