<br>は、lxml.htmlのtext_content（）またはそれと同等の改行としてどのように保存できますか？

Question

lxml要素からテキストコンテンツを抽出するときに、<br>タグを\nとして保存します。

例コード：

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) 

出力：

> 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

は、あなたが期待している結果を与える必要があり、各<br />要素の末尾に\n文字を付加：

>>> 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>'