Countdown time in Python
import time
def countdown(time_sec):
    while time_sec:
        mins, secs = divmod(time_sec, 60)
        timeformat = '{:02d}:{:02d}'.format(mins, secs)
        print(timeformat, end='\r')
        time.sleep(1)
        time_sec -= 1
    print("stop")
countdown(5)
- The 
divmod()method takes two numbers and returns a pair of numbers (a tuple) consisting of their quotient and remainder. end='\r'overwrites the output for each iteration.- The value of 
time_secis decremented at the end of each iteration. 
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