Question

我想在LI标签及其属性之间找到span标签。试着用漂亮的肥皂，但没有运气。我的代码详情。是否有人指出我的方法

在这段代码中，我的getId函数应该返回id =“0_False-2”

任何人都知道正确的方法吗？

from BeautifulSoup import BeautifulSoup as bs
import re

html = '<ul>\
<li class="line">&nbsp;</li>\
<li class="folder-open-last" id="0">\
<img style="float: left;" class="trigger" src="/media/images/spacer.gif" border="0">\
<span class="text" id="0_False">NOC</span><ul style="display: block;"><li class="line">&nbsp;</li><li class="doc" id="1"><span class="active text" id="0_False-1">PNQAIPMS1</span></li><li class="line">&nbsp;</li><li class="doc-last" id="2"><span class="text" id="0_False-2">PNQAIPMS2</span></li><li class="line-last"></li></ul></li><li class="line-last"></li>\
</ul>' 


def getId(html, txt):
 soup = bs(html)
 soup.findAll('ul',recursive=False)
 head = soup.contents[0]
 temp = head
 elements = {}
 while True:
    # It temp  is None that means no HTML tags are available 
  if temp == None:
   break
  #print temp
  if re.search('li', str( temp)) != None:
   attr = str(temp.attrs).encode('ascii','ignore')
   attr = attr.replace(' ', '')
   attr = attr.replace('[', '')
   attr = attr.replace(']', '')
   attr = attr.replace(')', '')
   attr = attr.replace('(', '')
   attr = attr.replace('u\'', '')
   attr = attr.replace('\'', '')
   attr  = attr.split(',')
   span = str(temp.text)

   if span == txt:
    return attr[3]

   temp = temp.next
  else:
   temp = temp.next


id = getId(html,"PNQAIPMS2")
print "ID = " + id

Answer 1

我相信有人可以告诉你BS方式，但这是我的方法。只是简单的旧Python字符串操作。

html = '<ul>\
<li class="line">&nbsp;</li>\
<li class="folder-open-last" id="0">\
<img style="float: left;" class="trigger" src="/media/images/spacer.gif" border="0">\
<span class="text" id="0_False">NOC</span><ul style="display: block;"><li class="line">&nbsp;</li><li class="doc" id="1"><span class="active text" id="0_False-1">PNQAIPMS1</span></li><li class="line">&nbsp;</li><li class="doc-last" id="2"><span class="text" id="0_False-2">PNQAIPMS2</span></li><li class="line-last"></li></ul></li><li class="line-last"></li>\
</ul>'


def getId( html, txt):
    for LI in html.split("</li>"):
        if "span" in LI:
            for CL in LI.split("span"):
                  if "class" in CL and "id" in CL and "text" in CL and txt in CL:
                       return CL.split("id=")[-1].split('">')[0].replace('"',"")

print "id for PNQAIPMS2: " , getId(html,"PNQAIPMS2")
print "id for NOC: ",getId(html, "NOC")
print "id for PNQAIPMS1: ",getId(html, "PNQAIPMS1")

输出

$ ./python.py
id for PNQAIPMS2:  0_False-2
id for NOC:  0_False
id for PNQAIPMS1:  0_False-1

我想在LI标签及其属性之间找到span标签，但没有运气

1 个答案: