Not all code is the same. Who's using the code? You, your department internally, or your clients? How many times does the code run? Daily, monthly, once and ma

Not all code is the same. Who's using the code? You, your department internally, or your clients? How many times does the code run? Daily, monthly, once and maybe never repeated again? How resource intensive is it? Does it take a second or a month to execute? Do you know from the start where you're going to end up? If it's a research problem, probably no. Then you don't need to prematurely optimise the code.