我該如何保存？ <br> 作為lxml.html text_content（）或等效的換行符？

Question

我想在從lxml元素中提取文本內容時將<br>標記保留為\\n 。

示例代碼：

fragment = '<div>This is a text node.<br/>This is another text node.<br/><br/><span>And a child element.</span><span>Another child,<br> with two text nodes</span></div>'

h = lxml.html.fromstring(fragment)

輸出：

> h.text_content()
'This is a text node.This is another text node.And a child element.Another child, with two text nodes'

Answer 1

將\\n字符添加到每個<br />元素的尾部應該給出您期望的結果：

>>> import lxml.html as html
>>> fragment = '<div>This is a text node.<br/>This is another text node.<br/><br/><span>And a child element.</span><span>Another child,<br> with two text nodes</span></div>'
>>> doc = html.document_fromstring(fragment)
>>> for br in doc.xpath("*//br"):
        br.tail = "\n" + br.tail if br.tail else "\n"

>>> doc.text_content()
'This is a text node.\nThis is another text node.\n\nAnd a child element.Another child,\n with two text nodes'
>>> fragment
'<div>This is a text node.<br/>This is another text node.<br/><br/><span>And a child element.</span><span>Another child,<br> with two text nodes</span></div>'