实现计算器的四则运算功能python

您可以使用以下代码实现计算器的四则运算功能：

def calculator():
    a = input("请输入第一个数：")
    b = input("请输入第二个数：")
    operator = input("请输入要执行的四则运算 (+-*/)：")
    
    if operator not in ['+', '-', '*', '/']:
        print('运算符输入有误')
    elif not a.isdigit() or not b.isdigit():
        print('数值输入有误，请按要求输入')
    else:
        a = int(a)
        b = int(b)
        if operator == '+':
            result = a + b
        elif operator == '-':
            result = a - b
        elif operator == '*':
            result = a * b
        else:
            if b == 0:
                print('除数不能为0')
                return
            result = a / b
        print(f'{a} {operator} {b} = {result}')

calculator()