发布时间:2019-08-29 07:40:28编辑:auto阅读(1966)
#coding=gbk def yunsuan(userA,userB,operate): '运算函数' try: A = int(userA) B = int(userB) operate_list = { '+':(A+B),'-':(A-B),'*':(A * B),'/':(A / B)} return operate_list[operate] except KeyError: return '%s 没有这个运算' % operate except ValueError: return '请给我个数字!' except ZeroDivisionError: return '%s 不能为除数!' % userB def user_input(): '获取用户输入' userA = raw_input('请输入数字A: ') userB = raw_input('请输入数字B: ') operate = raw_input('请选择运算符号(+、-、*、/):') return yunsuan(userA,userB,operate) print user_input()
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