登录千里马招标网站并爬取信息的代码

以下是使用Python爬取千里马招标网站信息的示例代码：

import requests
from bs4 import BeautifulSoup

url = "http://www.qianlima.com/zb/search/index.html"
headers = {
    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Firefox/91.0",
    "Referer": "http://www.qianlima.com/zb/search/index.html",
    "Content-Type": "application/x-www-form-urlencoded; charset=UTF-8",
    "X-Requested-With": "XMLHttpRequest"
}

# 构造请求参数
data = {
    "pg": 1,
    "pSize": 50,
    "orderType": 0,
    "zbType": "",
    "keywords": "数据分析",
    "isShowAll": 0,
    "sdate": "",
    "edate": "",
    "sdate1": "",
    "edate1": "",
    "sdate2": "",
    "edate2": "",
    "sdate3": "",
    "edate3": "",
    "sdate4": "",
    "edate4": "",
    "sdate5": "",
    "edate5": "",
    "sdate6": "",
    "edate6": "",
    "sdate7": "",
    "edate7": "",
    "sdate8": "",
    "edate8": "",
    "sdate9": "",
    "edate9": "",
    "sdate10": "",
    "edate10": "",
    "sdate11": "",
    "edate11": "",
    "sdate12": "",
    "edate12": "",
    "sdate13": "",
    "edate13": "",
    "sdate14": "",
    "edate14": "",
    "sdate15": "",
    "edate15": "",
    "sdate16": "",
    "edate16": "",
    "sdate17": "",
    "edate17": "",
    "sdate18": "",
    "edate18": "",
    "sdate19": "",
    "edate19": "",
    "sdate20": "",
    "edate20": "",
    "sdate21": "",
    "edate21": "",
    "sdate22": "",
    "edate22": "",
    "sdate23": "",
    "edate23": "",
    "sdate24": "",
    "edate24": "",
    "sdate25": "",
    "edate25": "",
    "sdate26": "",
    "edate26": "",
    "sdate27": "",
    "edate27": "",
    "sdate28": "",
    "edate28": "",
    "sdate29": "",
    "edate29": "",
    "sdate30": "",
    "edate30": "",
    "sdate31": "",
    "edate31": ""
}

# 发送post请求获取数据
response = requests.post(url, headers=headers, data=data)
soup = BeautifulSoup(response.text, 'html.parser')
items = soup.select(".zb-search-list .zb-search-item")

# 解析数据
for item in items:
    title = item.select_one(".zb-title a").get_text().strip()
    link = item.select_one(".zb-title a")['href']
    time = item.select_one(".zb-time").get_text().strip()
    print(title, link, time)

代码中，我们首先使用requests库构造POST请求，然后使用BeautifulSoup库解析响应数据，并提取出需要的信息进行展示。需要注意的是，本示例中的请求参数是根据网站的POST请求进行构造的，如果网站有更新，需要根据实际情况适当调整。