简单计算器实现，包括两个数

​# Filename : test.py# author by : www.dida100.com# 定义函数def add(x, y):   """相加"""   return x + ydef subtract(x, y):   """相减"""   return x - ydef multiply(x, y):   """相乘"""   return x * ydef divide(x, y):   """相除"""   return x / y# 用户输入print("选择运算：")print("1、相加")print("2、相减")print("3、相乘")print("4、相除")choice = input("输入你的选择(1/2/3/4):")num1 = int(input("输入第一个数字: "))num2 = int(input("输入第二个数字: "))if choice == '1':   print(num1,"+",num2,"=", add(num1,num2))elif choice == '2':   print(num1,"-",num2,"=", subtract(num1,num2))elif choice == '3':   print(num1,"*",num2,"=", multiply(num1,num2))elif choice == '4':   print(num1,"/",num2,"=", divide(num1,num2))else:   print("非法输入")​