如何用python BeautifulSoup模块分析网页信息?

发布时间:2020-01-25编辑:脚本学堂
python分析网页信息的例子,python中使用BeautifulSoup模块分析网页信息,学习下BeautifulSoup模块的用法,查找网页上的所有链接,分析其中的标签、样式等信息。

python使用BeautifulSoup分析网页信息

功能:查找网页上的所有链接,分析所有的span标签,并查找class包含titletext的span的内容

代码:
 

复制代码 代码示例:
#import the library used to query a website
import urllib2
#specify the url you want to query
url = "http://www.python.org"
#Query the website and return the html to the variable 'page'
page = urllib2.urlopen(url)
#import the Beautiful soup functions to parse the data returned from the website
from BeautifulSoup import BeautifulSoup
#Parse the html in the 'page' variable, and store it in Beautiful Soup format
soup = BeautifulSoup(page)
#to print the soup.head is the head tag and soup.head.title is the title tag
print soup.head
print soup.head.title
#to print the length of the page, use the len function
print len(page)
#create a new variable to store the data you want to find.
tags = soup.findAll('a')
#to print all the links
print tags
#to get all titles and print the contents of each title
titles = soup.findAll('span', attrs = { 'class' : 'titletext' })
for title in allTitles:
print title.contents