Python代码http://www.cndba.cn/hbhe0316/article/107783

def func():
    try:
        n1 = int(input("Please input the firest one:"))
        n2 = int(input("Please input the secend one:"))
        per = input("Please input + - * /")
        result = 0
        if per == '+':
            result = n1 + n2
        elif per == '-':
            result = n1 - n2
        elif per == '*':
            result = n1 * n2
        elif per == '/':
            result = n1 / n2
        else:
            print('输入有误！！')
        print('result is:', result)
    except ZeroDivisionError:
        print('You must input int type.')
    except ValueError:
        print('Must input int type')
func()

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Python