糗事百科实例
爬取糗事百科段子，假设页面的URL是: http://www.qiushibaike.com/8hr/page/1
要求：
- 使用requests获取页面信息，用XPath/re做数据提取
- 获取每个帖子里的用户头像连接、用户姓名、段子内容、点赞次数和评论次数
- 保存到json文件内
参考代码
#-*- 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)
# 投票次数
vote = site.xpath('.//i')[0].text
# print(vote)
#print site.xpath('.//*[@class="number"]')[0].text
# 评论信息
comments = site.xpath('.//i')[1].text
# print(comments)
print imgUrl, username, content, vote, comments
except Exception, e:
print e演示效果
