Does Python optimize function calls from loops?

Question

Say, I have a code which calls some function millions time from loop and I want the code to be fast:

def outer_function(file):
    for line in file:
        inne         


        

Answer 1

If by "Python" you mean CPython, the generally used implementation, no.

If by "Python" you happened to mean any implementation of the Python language, yes. PyPy can optimise a lot and I believe its method JIT should take care of cases like this.