Time.py

import time
#for real time
from time import time as my_timer
# below gives actual elapsed time
#from time import perf_counter as my_timer
#from time import monotonic as my_timer
#CPU time from below for process
#from time import process_time as my_timer

import random

input("press enter to start")
wait_time = random.randint(1,6)
time.sleep(wait_time)
start_time = my_timer()

input("press enter to stop")

end_time = my_timer()

print("started at: " + time.strftime("%X", time.localtime(start_time)))
print("ended at: " + time.strftime("%X", time.localtime(end_time)))

print("your reaction time was {} seconds".format(end_time - start_time))

print()