As mentioned in comments for your second part of question:
The processing time is depends on the machine(computer and its configuration) you are working with and active processes on it. There isnt fixed amount of time for an operation.
It's been a long time since you could get a reliable delay out of just trying to execute code that would take a certain time to complete. Computers don't work like that any more.
But to answer your first question: you can use system calls and open a os process to sleep 1 second like:
import subprocess
subprocess.run(["sleep", "1"])