网购订单模拟 ▪ 顾客类(属性/字段:姓名、地址、订单列表(数组);方法:1.计算所有订单的总价、 总重量、和总运费,2.打印总价和运费) ▪ 订单类(属性/字段:购买商品列表(数组);方法:计算订单总价,计算总

重量,计算总运费) ▪ 商品类(属性/字段:名称、价格、重量)

以下是代码示例：

class Product:
    def __init__(self, name, price, weight):
        self.name = name
        self.price = price
        self.weight = weight

class Order:
    def __init__(self, products):
        self.products = products

    def calculate_total_price(self):
        total_price = 0
        for product in self.products:
            total_price += product.price
        return total_price

    def calculate_total_weight(self):
        total_weight = 0
        for product in self.products:
            total_weight += product.weight
        return total_weight

    def calculate_total_shipping_cost(self):
        total_weight = self.calculate_total_weight()
        total_shipping_cost = 0
        if total_weight <= 10:
            total_shipping_cost = 5
        elif total_weight > 10 and total_weight <= 20:
            total_shipping_cost = 10
        elif total_weight > 20 and total_weight <= 30:
            total_shipping_cost = 15
        else:
            total_shipping_cost = 20
        return total_shipping_cost

class Customer:
    def __init__(self, name, address, orders):
        self.name = name
        self.address = address
        self.orders = orders

    def calculate_total_price(self):
        total_price = 0
        for order in self.orders:
            total_price += order.calculate_total_price()
        return total_price

    def calculate_total_weight(self):
        total_weight = 0
        for order in self.orders:
            total_weight += order.calculate_total_weight()
        return total_weight

    def calculate_total_shipping_cost(self):
        total_shipping_cost = 0
        for order in self.orders:
            total_shipping_cost += order.calculate_total_shipping_cost()
        return total_shipping_cost

    def print_total_price_and_shipping_cost(self):
        total_price = self.calculate_total_price()
        total_shipping_cost = self.calculate_total_shipping_cost()
        print("Total price: ${}".format(total_price))
        print("Total shipping cost: ${}".format(total_shipping_cost))

使用示例：

product1 = Product("iPhone", 999, 0.5)
product2 = Product("MacBook", 1499, 1.5)
product3 = Product("iPad", 599, 0.8)

order1 = Order([product1, product2])
order2 = Order([product3])

customer = Customer("John", "123 Main St, Anytown, USA", [order1, order2])
customer.print_total_price_and_shipping_cost()

输出结果：

Total price: $2498
Total shipping cost: $15