糗事百科實例

爬取糗事百科段子，假設頁面的URL是: http://www.qiushibaike.com/8hr/page/1

要求：

1. 使用requests獲取頁面信息，用XPath/re做數據提取
2. 獲取每個帖子裏的用戶頭像連接、用戶姓名、段子內容、點贊次數和評論次數
3. 保存到json文件內

參考代碼

#-*- coding:utf-8 -*-

import requests
from lxml import etree

page = 1
url = 'http://www.qiushibaike.com/8hr/page/' + str(page) 
headers = {
    'User-Agent'
 
: 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36',
    'Accept-Language': 'zh-CN,zh;q=0.8'}

try:
    response = requests.get(url, headers=headers)
    resHtml = response.text

    html = etree.HTML(resHtml)
    result =
 
 html.xpath('//div[contains(@id,"qiushi_tag")]')

    for site in result:
        item = {}

        imgUrl = site.xpath('./div//img/@src')[0].encode('utf-8')

        # print(imgUrl)
        username = site.xpath('./div//h2')[0].text
        # print(username)
        content =
 
 site.xpath('.//div[@class="content"]/span')[0].text.strip().encode('utf-8')
        # print(content)
        # 投票次數
        vote = site.xpath('.//i')[0].text
        # print(vote)
        #print site.xpath('.//*[@class="number"]')[0].text
        # 評論信息
        comments = site.xpath('.//i')[1].text
        # print(comments)
        print imgUrl, username, content, vote, comments

except Exception, e:
    print e

演示效果

Python爬蟲(十七)_糗事百科案例