Countdown timer

countdown.py

import time
import sys
import winsound


def countdown(t):
	print()

	while t:
		mins, secs = divmod(t, 60)
		if mins >= 60:
			hours, mins = divmod(mins, 60)
		else:
			hours = 0

		timeformat = '{:02d}:{:02d}:{:02d}'.format(hours, mins, secs)

		print(timeformat, end='\r')

		time.sleep(1)
		t -= 1


def usage():
	print("\nCountdown timer v0.1, (c)gkiryaziev 2017")
	print("\nUsage:")
	print("    python countdown.py [sec.]")
	print("    countdown.exe [sec.]")
	sys.exit()


def main(t):	
		try:
			countdown(int(t))

			print("Time's up!")

			for i in range(3):
				winsound.Beep(1500, 500)
				time.sleep(0.5)

		except KeyboardInterrupt:
			print("Stop and quit.")
		except ValueError:
			print("\n\tError: Argv must be an integer value.")
		except:
			print(sys.exc_info()[0])

			
if __name__ == "__main__":
	if len(sys.argv) == 1:
		print()
		data = input("Enter interval [sec.]: ")
		main(data)
	elif len(sys.argv) == 2:
		if sys.argv[1] == "--help":
			usage()
		if sys.argv[1] == "--version":
			print("v0.1")
			sys.exit()

		main(sys.argv[1])
	else:
		usage()