py 代码实现火车票售卖系统

以下是一个简单的火车票售卖系统的 Python 代码实现：

# 定义火车票类
class TrainTicket:
    def __init__(self, start_station, end_station, date, price):
        self.start_station = start_station
        self.end_station = end_station
        self.date = date
        self.price = price
    
    def __str__(self):
        return f"从 {self.start_station} 到 {self.end_station} 的火车票，出发日期为 {self.date}，价格为 {self.price} 元。"

# 定义火车票售卖系统类
class TrainTicketSellingSystem:
    def __init__(self):
        self.tickets = []
    
    # 添加火车票
    def add_ticket(self, ticket):
        self.tickets.append(ticket)
    
    # 查询火车票
    def search_tickets(self, start_station, end_station, date):
        available_tickets = []
        for ticket in self.tickets:
            if ticket.start_station == start_station and ticket.end_station == end_station and ticket.date == date:
                available_tickets.append(ticket)
        return available_tickets

# 测试代码
ticket1 = TrainTicket("北京", "上海", "2021-10-01", 500)
ticket2 = TrainTicket("北京", "广州", "2021-10-01", 800)
ticket3 = TrainTicket("上海", "广州", "2021-10-01", 600)

system = TrainTicketSellingSystem()
system.add_ticket(ticket1)
system.add_ticket(ticket2)
system.add_ticket(ticket3)

tickets = system.search_tickets("北京", "广州", "2021-10-01")
for ticket in tickets:
    print(ticket)

输出结果为：

从 北京 到 广州 的火车票，出发日期为 2021-10-01，价格为 800 元。