网络爬虫基础练习
import requests url = 'http://news.gzcc.cn/html/xiaoyuanxinwen/' res = requests.get(url) res.encoding = 'utf-8' res.text from bs4 import BeautifulSoup soup = BeautifulSoup(res.text,'html.parser')
取出h1标签的文本
s=soup.select('h1') s2=s[0].text print(s2)
取出a标签的链接
s=soup.a.attrs['href']
soup.li.a.attrs['href']
print(s)
取出所有li标签的所有内容
s=soup.select('li')[0].text print(s)
取出一条新闻的标题、链接、发布时间、来源
s0=soup.select('.news-list-title')[0].text s3=soup.body.li.a.attrs['href'] s1=soup.select('.news-list-info')[0].contents[0].text s2=soup.select('.news-list-info')[0].contents[1].text
web文件:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Simple DOM Demo</title> </head> <body> <h1>This is the document body</h1> <P ID = "p1Node">This is paragraph 1.</P> <P ID = "p2Node">段落2</P> <a href="http://www.gzcc.cn/">广州商学院</a> <li> <a href="http://news.gzcc.cn/html/2018/xiaoyuanxinwen_0328/9113.html"> <div class="news-list-text"> <div class="news-list-title" style="">我校校长杨文轩教授讲授新学期“思政第一课”</div> <div class="news-list-description">3月27日下午,我校校长杨文轩教授在第四教学楼310室为学生讲授了新学期“思政第一课”。</div> <div class="news-list-info"><span><i class="fa fa-clock-o"></i>2018-03-28</span><span><i class="fa fa-building-o"></i>马克思主义学院</span></div> </div> </a> </li> </body> </html>