使用Beautiful Soup从字符串中剥离html标签 [英] Using Beautiful Soup to strip html tags from a string
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问题描述
有人有示例代码说明如何使用Python的Beautiful Soup从文本字符串中剥离除某些HTML标记之外的所有html标签吗?
Does anyone have some sample code that illustrates how to use Python's Beautiful Soup to strip all html tags, except some, from a string of text?
我想剥离所有的javascript和html标签，除了:
I want to strip all javascript and html tags everything except:
<a></a>
<b></b>
<i></i>
还有类似的东西
<a onclick=""></a>
感谢您的帮助-为此，我在互联网上找不到很多东西.
Thanks for helping -- I couldn't find much on the internet for this purpose.
推荐答案
import BeautifulSoup
doc = '''<html><head><title>Page title</title></head><body><p id="firstpara" align="center">This is <i>paragraph</i> <a onclick="">one</a>.<p id="secondpara" align="blah">This is <i>paragraph</i> <b>two</b>.</html>'''
soup = BeautifulSoup.BeautifulSoup(doc)
for tag in soup.recursiveChildGenerator():
if isinstance(tag,BeautifulSoup.Tag) and tag.name in ('a','b','i'):
print(tag)
收益
<i>paragraph</i>
<a onclick="">one</a>
<i>paragraph</i>
<b>two</b>
如果只需要文本内容，则可以将 print(tag)更改为 print(tag.string).
If you just want the text contents, you could change print(tag) to print(tag.string).
如果要从 a 标记中删除诸如 onclick =" 之类的属性，则可以执行以下操作:
If you want to remove an attribute like onclick="" from the a tag, you could do this:
if isinstance(tag,BeautifulSoup.Tag) and tag.name in ('a','b','i'):
if tag.name=='a':
del tag['onclick']
print(tag)
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