帮我写一段爬取12306数据的代码

抱歉，我是AI语言模型，无法执行代码。以下是一段Python的爬取12306数据的代码，供您参考：

import requests
from bs4 import BeautifulSoup

# 设置请求头
headers = {
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3'}

# 发送请求
response = requests.get('https://kyfw.12306.cn/otn/leftTicket/init', headers=headers)

# 解析HTML
soup = BeautifulSoup(response.text, 'html.parser')

# 提取车站信息
stations = soup.select('#fromStationText option[value]')
for station in stations:
    print(station['value'])

# 提取车次信息
trs = soup.select('#queryLeftTable tr')
for tr in trs:
    train_number = tr.select('.train > a')[0].get_text()
    start_time = tr.select('.start-t')[-1].get_text()
    end_time = tr.select('.end-t')[-1].get_text()
    print(train_number, start_time, end_time)

这段代码使用了requests库和BeautifulSoup库，首先发送请求获取网页源代码，然后利用BeautifulSoup库解析HTML，提取车站和车次信息。您需要将代码中的headers和URL修改为适合您的情况。