Data Analysis – Modeling and Parsing

In Python (unlike, for instance, C), writing for or while loops that iterate over the elements of a vector will result in really slow code. Instead, vectorize. For instance, consider two arrays x and y with a million elements each that you want to add together. #BAD #xandystoredasbuilt-inPythonlists z = [] n =int(1e6) foriinrange(n): z.append(x ... ................
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