用python写一个计算器程序支持，加，减，乘，除，幂运算，取整，求余

你可以使用Python编写一个简单的控制台计算器程序，包含基本的算术运算以及取整和求余功能。以下是一个基础版本的示例：

def add(x, y):
    return x + y

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:
        print("Error! Division by zero is not allowed.")
        return None

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

def floor_division(x, y):
    return x // y

def modulus(x, y):
    return x % y

print("Welcome to Simple Calculator!")
while True:
    print("\nOptions:")
    print("1. Add")
    print("2. Subtract")
    print("3. Multiply")
    print("4. Divide")
    print("5. Power (Exponentiation)")
    print("6. Floor Division")
    print("7. Modulus (Remainder)")
    print("8. Exit")

    choice = input("Enter your choice (1-8): ")

    if choice == '8':
        break

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

    if choice in ['1', '2', '3', '4']:
        result = locals()[f"{choice.lower()}"](num1, num2)
        print(f"Result: {result}")
    elif choice == '5':
        result = power(num1, num2)
        print(f"Result: {result}")
    elif choice == '6':
        result = floor_division(num1, num2)
        print(f"Result: {result}")
    elif choice == '7':
        result = modulus(num1, num2)
        print(f"Result: {result}")
    else:
        print("Invalid choice. Please try again.")