BeautifulSoup一个弱弱的问题

aaa2520

网页中的串是这样的
<div class="ppost" data-field='{"author":{"id":281340474,"name":"是无户",is_private":false,"outer_id":"141251325"},"content":{"id":17628581128,"is_anonym":false,"open_id":"tieba","open_type":"","date":"2012-03-02 20:38","vote_crypt":"","floor":1,"type":"00"}}'>
</div>'
想通过BeautifulSoup获得data-field=后面的这个串
我才接触python
希望高手帮忙说说，

zynong

1. #! /usr/bin/env python
   
2. #coding=utf-8
   
3. import sys
   
4. reload(sys)
   
5. sys.setdefaultencoding('gb2312')
   
6. 
   
7. from BeautifulSoup import BeautifulSoup as BeautifulSoup
   
8. 
   
9. 
   
10. 
    
11. content = '''
    
12. <span class="pipe">|</span>
    
13. <div id="ADV_13039"></div>
    
14. <div class="ppost" data-field='{"author":{"id":281340474,"name":"是无户",is_private":false,"outer_id":"141251325"},"content":{"id":17628581128,"is_anonym":false,"open_id":"tieba","open_type":"","date":"2012-03-02 20:38","vote_crypt":"","floor":1,"type":"00"}}'></div>'
    
15. '''
    
16. soup = BeautifulSoup(content)
    
17. divs = soup('div')
    
18. for div  in divs:
    
19.     if "data-field" in dict(div.attrs):
    
20.         print div['data-field']

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输出
> "C:\Python27\python.exe" -u "E:\script\Untitled 1.py"
{"author":{"id":281340474,"name":"是无户",is_private":false,"outer_id":"141251325"},"content":{"id":17628581128,"is_anonym":false,"open_id":"tieba","open_type":"","date":"2012-03-02 20:38","vote_crypt":"","floor":1,"type":"00"}}

aaa2520

呵呵
十分感谢，
我copy下来 研究研究

ziyunfei

lxml

1. #! /usr/bin/env python
   
2. 
   
3. from lxml import etree
   
4. content = '''
   
5. <span class="pipe">|</span>
   
6. <div id="ADV_13039"></div>
   
7. <div class="ppost" data-field='{"author":{"id":281340474,"name":"是无户",is_private":false,"outer_id":"141251325"},"content":{"id":17628581128,"is_anonym":false,"open_id":"tieba","open_type":"","date":"2012-03-02 20:38","vote_crypt":"","floor":1,"type":"00"}}'>dd </div>'
   
8. '''
   
9. tree = etree.HTML(content)
   
10. print(tree.xpath("//div//@data-field")[0])

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