following-sibling 可以得到很多属性吗？

Question

我有这样的结构。

 <li class="Title">This</li>
 <li><a href="">AAA</a></li>
 <li><a href="">BBB</a></li>
 <li><a href="">CCC</a></li>
 <li class="Title">That</li>
 <li><a href="">DDD</a></li>
 <li><a href="">EEE</a></li>

这是我的 xpath：

 sites = sel.xpath("//li[@class='Title']")
 for i,site in enumerate(sites):
      print i
      state = site.xpath("./text()")
      city = site.xpath("./following-sibling::li/a/text()")

结果是

 0
 This 
 AAA
 1
 That 
 DDD

但是我想要也想要select所有兄弟姐妹不只有一个

我怎样才能select li <li class="Title">

下的所有兄弟姐妹

喜欢：

This 
AAA
This 
BBB
This 
CCC

That 
DDD
That 
EEE

Answer 1

试试这个：

import lxml.etree as etree

string = '''
<root>
  <li class="Title">This</li>
  <li><a href="">AAA</a></li>
  <li><a href="">BBB</a></li>
  <li><a href="">CCC</a></li>
  <li class="Title">That</li>
  <li><a href="">DDD</a></li>
  <li><a href="">EEE</a></li>
</root>
'''

st = ", "

tree = etree.fromstring(string)

for i, node in enumerate(tree.xpath('//li[@class="Title"] | //li/a')):
    seq = (str(i), node.text, node.attrib.keys()[0])
    print st.join(seq)

输出：

0, This, class
1, AAA, href
2, BBB, href
3, CCC, href
4, That, class
5, DDD, href
6, EEE, href

注意：

现在，你已经足够启动li的类型来分支你想要的，但是要小心，没有li子元素尽管 POST.

中原始缩进的含义

Answer 2

作为替代方案（要仅检查元素之后的兄弟姐妹，您可以遍历兄弟姐妹并在到达另一个元素时突破. 像这样：

import lxml

# I wrap your sample with an empty div
s = '''<div><li class="Title">This</li>
     <li><a href="">AAA</a></li>
     <li><a href="">BBB</a></li>
     <li><a href="">CCC</a></li>
 <li class="Title">That</li>
     <li><a href="">DDD</a></li>
     <li><a href="">EEE</a></li></div>'''

tree = lxml.etree.fromstring(s)
# search for all <li> with "Title" element
for node in tree.xpath('.//li[@class="Title"]'):
    print '\n'
    # loop in <li class="Title"> to find for any siblings with <a> element
    for sub in node.xpath('.//following-sibling::li'):
        # break out the loop if another <li class="Title"> is found
        # you can implement other logic to break out as well 
        if sub.get('class') == 'Title':
            break
        print node.text
        print ''.join(sub.xpath('./a/text()'))

结果：

This
AAA
This
BBB
This
CCC

That
DDD
That
EEE

following-sibling 可以得到很多属性吗？

Can following-sibling get many attributes?

python

xpath

输出：

注意：