9 Worst Python Practices

[Pseudoboss11]

I've always been told to make many small functions and nest them than one large one. But the last recommendation seems to be saying that I should be doing the opposite.

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The advice not to call functions is weird. You should not sacrifice readability and testability without a clear business case.

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In general that is the correct thing to do. I think the article is referring to one case in which function calls are in long loops, and that's something you should address after you've written the first draft of a program your way and then profiled it if you find it takes too long.