How can I cause my python program to "sleep" without the sleep function-CodePudding

I've been asked the question:
Define a second function which, when called, will “sleep” for approximately three seconds, and while doing so will display a “z” on the screen about every ½ a second. Do not use the sleep function to accomplish this task as we have not studies.

I do not know how to do this, please help

CodePudding user response：

You could use the time module:

from time import time

start_time = time()
end_time = start_time   3
next_z = start_time   0.5

while next_z < end_time:
    if time() > next_z:
        print('z')
        next_z  = 0.5