input_game.py

from time import sleep, time

loop = input("How many times do you want to try your reaction skills? ")
count = 0

for i in range(int(loop)):
    print("Attempt number " + str(count + 1))
    sleep(5)

    start = time()
    print("Quick, press enter")
    input()
    print("That was fast")
    stop = time()

    reaction_time = (stop - start)
    print("You took "+ str(reaction_time) + " seconds")
    count = count + 1