import time
  import argparse

  def main(mins):
    print(f"Starting pomodoro timer: {mins} minutes.")

    for m in range(mins, 0, -1):
        secs = 60
        for s in range(secs, 0, -1):
            print(f"{m-1}:{s-1}    ", end='\r')
            time.sleep(1)

    print("Timer finished - take a break!\a")
    time.sleep(2)
    print("\a")
    time.sleep(2)
    print("\a")
    time.sleep(2)


  if __name__ == "__main__":
      parser = argparse.ArgumentParser(description="Pomodoro Timer.")
    parser.add_argument("mins", type=int, help="minutes to time.")

    args = parser.parse_args()
    main(args.mins)