[Python] How slow is it to check a constant boolean in a long simulation loop?

Discussão em 'Python' iniciado por Stack, Julho 11, 2025.

  1. Stack

    Stack Membro Participativo

    In a simulation loop (python), I have something like this:

    def run(extra_stuff = False):
    for step in range(num_steps):
    do_thing()
    if extra_stuff:
    do_another_thing()


    Here, extra_stuff is a boolean that I control when I run the simulation, but is often set to false (I use it for debugging occasionally say)

    If extra_stuff == False, will Python still check the if statement on every iteration?

    Is the interpreter smart enough to remove or "optimize away" that dead code?

    If not, how much of a performance penalty does this cause?

    I'm running a simulation with around a hundred thousand iterations, so even small optimizations might help. I'm using standard Python in jupyter notebooks.

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