I gotta say that as number cruncher, iteration in python is my biggest nightmare. I do what is possible with numpy, but element by element processing is a hassle. My programming experience is still pretty fresh at a year, so "exotics" as such are not in play yet. I also wish python looping/iterative features could be improved as best possible (what ever extent that may be). Generators are a friend, but not as performance friendly as when I am able to do all the needed work in numpy. I dunno I guess I got spoiled :)
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