Use lxml.html.clean! It's VERY easy!
from lxml.html.clean import clean_html
print clean_html(html)
Suppose the following html:
html = '''
<html>
<head>
<script type="text/javascript" src="evil-site"></script>
<link rel="alternate" type="text/rss" src="evil-rss">
<style>
body {background-image: url(javascript:do_evil)};
div {color: expression(evil)};
</style>
</head>
<body onload="evil_function()">
<!-- I am interpreted for EVIL! -->
<a href="javascript:evil_function()">a link</a>
<a href="#" onclick="evil_function()">another link</a>
<p onclick="evil_function()">a paragraph</p>
<div style="display: none">secret EVIL!</div>
<object> of EVIL! </object>
<iframe src="evil-site"></iframe>
<form action="evil-site">
Password: <input type="password" name="password">
</form>
<blink>annoying EVIL!</blink>
<a href="evil-site">spam spam SPAM!</a>
<image src="evil!">
</body>
</html>'''
The results...
<html>
<body>
<div>
<style>/* deleted */</style>
<a href="">a link</a>
<a href="#">another link</a>
<p>a paragraph</p>
<div>secret EVIL!</div>
of EVIL!
Password:
annoying EVIL!
<a href="evil-site">spam spam SPAM!</a>
<img src="evil!">
</div>
</body>
</html>
You can customize the elements you want to clean and whatnot.
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