字符串之时间续1s
timeStr = input("请输入时间：\n")
timeList = timeStr.split(":")
hour = int(timeList[0])
minute = int(timeList[1])
seconed = int(timeList[2])
while hour >= 24 or minute >= 60 or seconed >= 60:
print("输入错误，请重新输入：\n")
timeStr = input()
timeList = timeStr.split(":")
hour = int(timeList[0])
minute = int(timeList[1])
seconed = int(timeList[2])
seconed += 1
if seconed == 60:
seconed -= 60
minute += 1
if minute == 60:
minute -= 60
hour += 1
if hour == 24:
hour -= 24
print("%.2d:%.2d:%.2d"%(hour, minute, seconed))
