Sleep for exact time in python

Question

I need to wait for about 25ms in one of my functions. Sometimes this function is called when the processor is occupied with other things and other times it has the processor

Answer 1

Because you're working with a preemptive operating system, there's no way you can guarantee that your process will be able to have control of the CPU in 25ms.

If you'd still like to try, it would be better to have a busy loop that polls until 25ms has passed. Something like this might work:

import time
target_time = time.clock() + 0.025
while time.clock() < target_time:
    pass