阅读元素 -​​

Question

我有以下HTML：

<tr style='background:#DDDDDD;'> 
    <td><b>ASD</b></td> 
    <td colspan='3'>1231</td> 
</tr> 

此元素不重复的页面上，所以它是独一无二的。我想把单元格的内容（1231）变成一些变量。我尝试使用HTML.parser，但它不工作

Answer 1

看使用beautifulsoup这是伟大的，

from BeautifulSoup import BeautifulSoup 

soup = BeautifulSoup(html) ## feed your html page to beautifulsoup 

pleaseFind = soup.find(text="ASD") 

whatINeed = pleaseFind.findNext('td') 

print whatINeed.text 

Answer 2

你可以使用的urllib2（你没有安装任何新的（至少在Windows版本的蟒蛇））：http://docs.python.org/2/howto/urllib2.html

例子：

import urllib2 
response = urllib2.urlopen('your URL') 
html = response.read() 
#html is a string containing everything on your page 

#this line (it could be a bit cleaner) finds substring "<td colspan='3'>" and 
#searches between it's position and the next "</td>" 
pos=html.find("<td colspan='3'>") 
print html[pos+len("<td colspan='3'>")+1:html.find("</td>", pos))]