How to preserve inline CSS style with lxml.html.clean.Cleaner() in Python?
lxml, lxml.html, python
Solution
It works if you set `cleaner.safe_attrs_only = False`.
The set of "safe" attributes (`Cleaner.safe_attrs`) is defined in the `lxml.html.defs` module (source code) and `style` is not included in the set.
But even better than `cleaner.safe_attrs_only = False` is to use `Cleaner(safe_attrs=lxml.html.defs.safe_attrs | set(['style']))`. This will preserve `style` and at the same time protect from other unsafe attributes.
Demo code:
from lxml import html
from lxml.html import clean
s ='<marquee><span style="color: #008800;">67.51</span></marquee>'
doc = html.fromstring(s)
cleaner = clean.Cleaner(safe_attrs=html.defs.safe_attrs | set(['style']))
print html.tostring(cleaner.clean_html(doc))
Output:
<div><span style="color: #008800;">67.51</span></div>
Problem
I am trying to clean up an HTML table using lxml.html.clean.Cleaner(). I need to strip JavaScript attributes, but would like to preserve inline CSS style. I thought style=False is the default setup: ``` import lxml.html.clean cleaner = lxml.html.clean.Cleaner() ``` however when I call `cleaner.clean_html(doc)` ``` <span style="color:#008800;">67.51</span> ``` will become ``` <span>67.51</span> ``` Basically, style is not preserved. I tried to add: ``` cleaner.style= False ``` It doesn't help. Update: I am using Python 2.6.6 + lxml 3.2.4 on Dreamhost, and Python 2.7.5 + lxml 3.2.4 on local Macbook. Same results. Another thing: there is a javacript-related attribute in my html: `<td style="cursor:pointer;">Ticker</td>` Could it be lxml stripped this JavaScript related style and treated other styles the same? I hope not.