Timer for Python game

Question

I\'m trying to create a simple game where the point is to collect as many blocks as you can in a certain amount of time, say 10 seconds. How can I get a timer to begin ticking a

Answer 1

1. Asks you when to stop [seconds]
2. Adds '0' at starting [1-9]

import time
import sys

stop = int(input('> '))
second = 0
print('> Stopwatch Started.')

while stop > second:
    if second < 9:
        second = second + 1
        time.sleep(1)
        sys.stdout.write('\r> ' + '0' + str(second))
    else:
        second += 1
        time.sleep(1)
        sys.stdout.write('\r' + '> ' + str(second))

print('\n> Stopwatch Stopped.')