使用BeautifulSoup删除html中的script、注释

##示例1：去除script

#! /usr/bin/env python
# -*- coding: utf-8 -*- 

from BeautifulSoup import BeautifulSoup
html = '''
<script>a</script>
baba
<script>b</script>
<h1>hi, world</h1>
'''
soup = BeautifulSoup('<script>a</script>baba<script>b</script><h1>')
[s.extract() for s in soup('script')]
print soup

输出：

baba<h1></h1>

可使用这种方法去除其余标签、以及其中内容。

也能够将

[s.extract() for s in soup('script')]

替换为：

[s.extract() for s in soup.findAll('script')]

##示例2：去除注释

#! /usr/bin/env python
# -*- coding: utf-8 -*- 

from BeautifulSoup import BeautifulSoup, Comment
data = """<div class="foo">
cat dog sheep goat
<!--
<p>test</p>
-->
</div>"""

soup = BeautifulSoup(data)

for element in soup(text=lambda text: isinstance(text, Comment)):
    element.extract()

print soup.prettify()

输出结果：

<div class="foo">
 cat dog sheep goat
</div>