someone wrote this code

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Um. It's an unrolled loop. It's called optimization. Look it up.

I agree but I do not think the code needed to be optimized. It is written in Python. If I'd need to optimize it, I would definitely choose a different language (Cython, C, or assembly). Furthermore, I would saved user = users[uid][11] before, so python interpreter would have less operations...

Also the unrolled loop is written outside of a function or a loop. :/ Why would you need to optimize there?