使用BeautifulSoup从文本中删除标记
[英]Remove tag from text with BeautifulSoup
问题描述
A lot of questions here with similar title but I'm trying to remove the tag from the soup object itself. 
很多问题在这里有类似的标题，但我试图从汤对象本身删除标签。
I have a page that contains among other things this div : 我有一个页面，其中包含这个div ：
<div id="content">
I want to keep this<br /><div id="blah">I want to remove this</div>
</div>
I can select <div id="content"> with soup.find('div', id='content') but I want to remove the <div id="blah"> from it. 我可以用soup.find('div', id='content')选择<div id="content">但我想从中删除<div id="blah"> 。
2 个解决方案
解决方案1
9 已采纳 2015-07-16 10:32:49
You can use extract if you want to remove a tag or string from the tree. 如果要从树中删除标记或字符串，可以使用extract 。
In [13]: soup = BeautifulSoup("""<div id="content">
I want to keep this<br /><div id="blah">I want to remove this</div>
</div>""")
In [14]: soup = BeautifulSoup("""<div id="content">
....: I want to keep this<br /><div id="blah">I want to remove this</div>
....: </div>""")
In [15]: blah = soup.find(id='blah')
In [16]: _ = blah.extract()
In [17]: soup
Out[17]:
<html><body><div id="content">
I want to keep this<br/>
</div></body></html>
解决方案2
6 2015-07-16 10:36:19
The Tag.decompose method removes tag from the tree. Tag.decompose方法从树中删除tag 。 So find the div tag: 所以找到div标签：
div = soup.find('div', {'id':'content'})
Loop over all the children but the first: 循环所有的孩子，但第一个：
for child in list(div)[1:]:
and try to decompose the children: 并尝试分解孩子们：
try:
child.decompose()
except AttributeError: pass
import bs4 as bs
content = '''<div id="content">
I want to keep this<br /><div id="blah">I want to remove this</div>
</div>'''
soup = bs.BeautifulSoup(content)
div = soup.find('div', {'id':'content'})
for child in list(div)[1:]:
try:
child.decompose()
except AttributeError: pass
print(div)
yields 产量
<div id="content">
I want to keep this
</div>
The equivalent using lxml would be 使用lxml的等价物将是
import lxml.html as LH
content = '''<div id="content">
I want to keep this<br /><div id="blah">I want to remove this</div>
</div>'''
root = LH.fromstring(content)
div = root.xpath('//div[@id="content"]')[0]
for child in div:
div.remove(child)
print(LH.tostring(div))
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