Countdown_Timer.py

# Python Program to Create a Countdown Timer.
import time

def countdown(sec):
    while sec:
        mins, secs = divmod(sec, 60)
        time_format = "{:02d}:{:02d}".format(mins, secs)
        print(time_format)
        time.sleep(1)
        sec -= 1

    print("Stop")

countdown(9)