Python 购物车代码

可以回答这个问题，以下是一个简单的 Python 购物车代码示例：

# 定义商品列表和价格
products = {
    "apple": 5,
    "banana": 3,
    "orange": 4
}

# 初始化购物车
cart = {}

# 添加商品到购物车
def add_to_cart(product, quantity):
    if product in products:
        if product in cart:
            cart[product] += quantity
        else:
            cart[product] = quantity
        print(f"{quantity} {product}(s) added to cart.")
    else:
        print("Sorry, we don't have that product.")

# 显示购物车内容和总价
def show_cart():
    total_price = 0
    print("Your cart:")
    for product, quantity in cart.items():
        price = products[product] * quantity
        print(f"{product}: {quantity} x {products[product]} = {price}")
        total_price += price
    print(f"Total price: {total_price}")

# 测试代码
add_to_cart("apple", 2)
add_to_cart("banana", 3)
add_to_cart("watermelon", 1)
show_cart()

输出结果：

2 apple(s) added to cart.
3 banana(s) added to cart.
Sorry, we don't have that product.
Your cart:
apple: 2 x 5 = 10
banana: 3 x 3 = 9
Total price: 19