import time
def convert_time(sec):
  min = sec // 60
  sec = sec % 60
  hrs = min // 60
  min = min % 60
  print("Lapsed Time = {0}:{1}:{2}".format(int(hrs),int(min),sec))
input("Press Enter to start")
start_time = time.time()
input("Press Enter to stop")
end_time = time.time()
lapsed_time = end_time - start_time
convert_time(lapsed_time)
