您的位置：首页 > 其它

慕课爬虫

2016-06-02 09:56 225 查看
https://www.crummy.com/software/BeautifulSoup/

#!/usr/bin/python
# coding=utf-8

from bs4 import BeautifulSoup
import re

html_doc = """
<html><head><title>The Dormouse's story</title></head>
<body>
<p class="title"><b>The Dormouse's story</b></p>

<p class="story">Once upon a time there were three little sisters; and their names were
<a href="http://example.com/elsie" class="sister" id="link1">Elsie</a>,
<a href="http://example.com/lacie" class="sister" id="link2">Lacie</a> and
<a href="http://example.com/tillie" class="sister" id="link3">Tillie</a>;
and they lived at the bottom of a well.</p>

<p class="story">...</p>
"""

soup = BeautifulSoup(html_doc,'html.parser',from_encoding = 'utf-8')

print '获取所有的链接'
links = soup.find_all('a')
for link in links:
print link.name, link['href'],link.get_text()

print '获取lacie的链接'
link_node = soup.find('a',href='http://example.com/lacie')
print link_node.name, link_node['href'],link_node.get_text()

print '正则匹配 ill'
#r"" ,字符串中反斜线 只用写一次
link_node = soup.find('a',href=re.compile(r"ill") )
print link_node.name, link_node['href'],link_node.get_text()

print '获取p段落文字'
#r"" ,字符串中反斜线 只用写一次
p_node = soup.find('p',class_="title" )
print p_node.name, p_node.get_text()


结果：

获取所有的链接
a http://example.com/elsie Elsie
a http://example.com/lacie Lacie
a http://example.com/tillie Tillie
获取lacie的链接
a http://example.com/lacie Lacie
正则匹配 ill
a http://example.com/tillie Tillie
获取p段落文字
p The Dormouse's story
内容来自用户分享和网络整理，不保证内容的准确性，如有侵权内容，可联系管理员处理 点击这里给我发消息
标签： 
相关文章推荐
新的分享
章节导航