lxml xpath 表达式，用于选择给定 child 节点下的所有文本，包括他的 children

Question

前提是我有一个XML如下：

<node1>
    <text title='book'>
       <div chapter='0'>
          <div id='theNode'>
              <p xml:id="40">
               A House that has:
                   <p xml:id="45">- a window;</p>
                   <p xml:id="46">- a door</p>
                   <p xml:id="46">- a door</p>
               its a beuatiful house
               </p>
          </div>
       </div>
    </text>
</node1>

我想定位文本标题并从出现在文本标题书节点内的第一个 p 标签中获取所有文本

到目前为止我知道：

from lxml import etree
XML_tree = etree.fromstring(XML_content,parser=parser)
text = XML_tree.xpath('//text[@title="book"]/div/div/p/text()')

得到："A house that has is a beautiful house"

但我还想要

下第一个

的所有可能 children 和伟大 children 的所有文本

基本上；查找然后查找第一个

并给我该 p 标签下的所有文本，无论嵌套如何。

伪代码：

text = XML_tree.xpath('//text[@title="book"]/... any number of nodes.../p/ ....all text under p')

谢谢。

Answer 1

尝试使用 string() or normalize-space()...

from lxml import etree

XML_content = """
<node1>
    <text title='book'>
       <div chapter='0'>
          <div id='theNode'>
              <p xml:id="x40">
               A House that has:
                   <p xml:id="x45">- a window;</p>
                   <p xml:id="x46">- a door</p>
                   <p xml:id="x47">- a door</p>
               its a beuatiful house
               </p>
          </div>
       </div>
    </text>
</node1>
"""

XML_tree = etree.fromstring(XML_content)
text = XML_tree.xpath('string(//text[@title="book"]/div/div/p)')
# text = XML_tree.xpath('normalize-space(//text[@title="book"]/div/div/p)')
print(text)

输出使用string()...


               A House that has:
                   - a window;
                   - a door
                   - a door
               its a beuatiful house

输出使用normalize-space()...

A House that has: - a window; - a door - a door its a beuatiful house

Answer 2

另一种选择：

XML_tree = etree.fromstring(XML_content)
text = [el.strip() for el in XML_tree.xpath('//text()[ancestor::text[@title="book"]][normalize-space()]')]
print(" ".join(text))
print("\n".join(text))

输出：

A House that has: - a window; - a door - a door its a beuatiful house
A House that has:
- a window;
- a door
- a door
its a beuatiful house

lxml xpath 表达式，用于选择给定 child 节点下的所有文本，包括他的 children

lxml xpath expression for selecting all text under a given child node including his children

python

xml

xpath

lxml

children