1. # 需求：爬取58二手房中的房源信息
    2. if __name__ == "__main__":
    3.     headers = {
    4.         'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_0) AppleWebKit/537.36 (KHTML, like Gecko) '
    5.                       'Chrome/73.0.3683.103 Safari/537.36 '
    6.     }
    7.     # 爬取到页面源码数据
    8.     url = 'https://bj.58.com/ershoufang/'
    9.     page_text = requests.get(url=url, headers=headers).text
    11.     # 数据解析
    12.     tree = etree.HTML(page_text)
    13.     # 存储的就是li标签对象
    14.     li_list = tree.xpath('//ul[@class="house-list-wrap"]/li')
    15.     fp = open('58.txt', 'w', encoding='utf-8')
    16.     for li in li_list:
    17.         # 局部解析
    18.         title = li.xpath('./div[2]/h2/a/text()')[0]
    19.         print(title)
    20.         fp.write(title + '\n')