Python Countdown Timer: Simple Code to Display and Track Time in Real-Time

import time

def countdown(time_sec):

    """

    A function that counts down from a specified number of seconds.

    """

    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("Time Ended")

countdown(100)

Explanation:

• The countdown function takes a parameter time_sec, which represents the number of seconds to count down from.
• Inside the function, there is a while loop that continues until time_sec becomes zero.
• The divmod function is used to calculate the minutes and seconds from the remaining time in seconds.
• The timeformat variable is formatted to display the time in a two-digit format for minutes and seconds (e.g., "03:45").
• The print statement displays the formatted time using the carriage return character (\r) to overwrite the previous output.
• time.sleep(1) pauses the execution for one second, creating a one-second delay between each iteration of the loop.
• After each iteration, time_sec is decremented by one until it reaches zero.
• When the loop finishes, the "Time Ended" message is displayed.