python火车票售票系统

<code class="python">import sys, os, json, pandas as pd

# 定义火车票类
class TrainTicket:
    def __init__(self, source, destination, date, time, price):
        self.source = source
        self.destination = destination
        self.date = date
        self.time = time
        self.price = price

# 读取火车票数据
with open('train_tickets.json') as f:
    data = json.load(f)
    tickets = [TrainTicket(**ticket) for ticket in data]

# 处理用户界面
while True:
    # 显示菜单
    print("1. 搜索火车票")
    print("2. 预订火车票")
    print("3. 取消火车票")
    print("4. 退出")

    # 获取用户选择
    choice = int(input("Enter your choice: "))

    if choice == 1:
        # 搜索火车票
        ...

    elif choice == 2:
        # 预订火车票
        ...

    elif choice == 3:
        # 取消火车票
        ...

    elif choice == 4:
        # 退出
        break

    else:
        print("Invalid choice!")

# 保存火车票数据
with open('train_tickets.json', 'w') as f:
    json.dump([ticket.__dict__ for ticket in tickets], f)</code>