python简单数学运算器

Python是一种高级编程语言，非常适合编写简单的数学运算器。你可以通过基本的算术运算符如加 (+), 减 (-), 乘 (*), 除 (/) 和取余 (%), 来创建功能齐全的计算器程序。以下是一个简单的例子：

# 定义一个函数来进行加法运算
def add(x, y):
    return x + y

# 定义减法、乘法和除法函数类似
def subtract(x, y):
    return x - y

def multiply(x, y):
    return x * y

def divide(x, y):
    if y != 0:
        return x / y
    else:
        return "Error: Division by zero is not allowed."

# 用户输入操作和数字
print("Select operation:")
print("1. Add")
print("2. Subtract")
print("3. Multiply")
print("4. Divide")

choice = input("Enter choice(1/2/3/4): ")

num1 = float(input("Enter first number: "))
num2 = float(input("Enter second number: "))

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':
    result = divide(num1, num2)
    print(num1, "/", num2, "=", result)
else:
    print("Invalid input")