帮我写一个订单系统的核心模块代码
时间: 2023-08-28 16:18:18 浏览: 35
好的,以下是一个简单的订单系统的核心模块代码示例:
```python
class Order:
def __init__(self, order_id, customer, items):
self.order_id = order_id
self.customer = customer
self.items = items
self.total_price = sum(item.price for item in items)
class Customer:
def __init__(self, customer_id, name, address, phone):
self.customer_id = customer_id
self.name = name
self.address = address
self.phone = phone
class Item:
def __init__(self, item_id, name, price):
self.item_id = item_id
self.name = name
self.price = price
class OrderSystem:
def __init__(self):
self.customers = {}
self.items = {}
self.orders = {}
def add_customer(self, customer_id, name, address, phone):
customer = Customer(customer_id, name, address, phone)
self.customers[customer_id] = customer
return customer
def get_customer(self, customer_id):
return self.customers.get(customer_id)
def add_item(self, item_id, name, price):
item = Item(item_id, name, price)
self.items[item_id] = item
return item
def get_item(self, item_id):
return self.items.get(item_id)
def place_order(self, order_id, customer_id, items):
customer = self.get_customer(customer_id)
if not customer:
raise Exception(f"Customer with ID {customer_id} not found")
items_list = []
for item_id, quantity in items.items():
item = self.get_item(item_id)
if not item:
raise Exception(f"Item with ID {item_id} not found")
items_list.extend([item] * quantity)
order = Order(order_id, customer, items_list)
self.orders[order_id] = order
return order
def get_order(self, order_id):
return self.orders.get(order_id)
```
以上代码定义了三个类:`Order`、`Customer`、`Item`,以及一个`OrderSystem`类用于管理订单、顾客和商品。在`OrderSystem`类中,我们可以添加顾客、商品和订单,也可以获取顾客、商品和订单的详细信息。
`Order`类表示一个订单,包含订单 ID、顾客信息、商品信息和订单总价。`Customer`类表示一个顾客,包含顾客 ID、姓名、地址和电话号码。`Item`类表示一个商品,包含商品 ID、名称和价格。
`OrderSystem`类包含了添加顾客、商品和订单的方法,也包含了获取顾客、商品和订单的方法。在`place_order`方法中,我们首先检查顾客和商品是否存在,然后创建一个新的订单对象,并将其添加到订单列表中。最后,返回订单对象。
当然,这只是一个简单的示例代码,实际的订单系统可能会更加复杂,需要根据实际需求进行设计和实现。