求Python函数与异常《时间的输入与显示》

完整的程序参考（python3.x)# -*- coding: utf-8 -*-try: h=int(input("时:")) if h<0 or h>23: raise Exception("无效的时") m=int(input("分:")) if m<0 or m>59: raise Exception("无效的分") s=int(input("秒:")) if s<0 or s>59: raise Exception("无效的秒") except Exception as err: print(err)else: print("%d:%d:%d"%(h,m,s))