用xpath写一个python爬取二手房网页数据

以下是一个简单的Python程序，使用XPath从二手房网站抓取数据：

import requests
from lxml import etree

# 网站地址
url = "http://www.example.com/ershoufang"

# 发送请求
response = requests.get(url)

# 解析HTML
html = etree.HTML(response.text)

# 得到所有房子信息的列表
house_list = html.xpath('//div[@class="house-info"]')

# 遍历列表，提取房子信息
for house in house_list:
    # 房子标题
    title = house.xpath('.//a[@class="house-title"]/text()')[0]
    # 房子总价
    total_price = house.xpath('.//div[@class="total-price"]/text()')[0]
    # 房子单价
    unit_price = house.xpath('.//div[@class="unit-price"]/text()')[0]
    # 房子面积
    area = house.xpath('.//div[@class="area"]/text()')[0]
    # 输出房子信息
    print(title, total_price, unit_price, area)

以上代码仅供参考，具体情况需要根据实际网站进行调整。