从HTML标记中删除某些属性

Question

如何从HTML代码中删除某些属性,如id,style,class等？

我以为我可以使用lxml.html.clean模块,但事实证明我只能删除样式属性Clean(style=True).clean_html(code).我不想在这个任务中使用正则表达式(属性可能会改变).

我想拥有什么:

from lxml.html.clean import Cleaner

code = '<tr id="ctl00_Content_AdManagementPreview_DetailView_divNova" class="Extended" style="display: none;">'

cleaner = Cleaner(style=True, id=True, class=True)
cleaned = cleaner.clean_html(code)

print cleaned
'<tr>'

提前致谢!

Answer 1

cleaner.Cleaner.__call__有一个safe_attrs_only参数.设置为时True,仅clean.defs.safe_attrs保留属性.您可以通过更改删除任何或所有属性clean.defs.safe_attrs.完成后,请务必将其更改回来.

import lxml.html.clean as clean

code = '<tr id="ctl00_Content_AdManagementPreview_DetailView_divNova" class="Extended" style="display: none;">'

safe_attrs = clean.defs.safe_attrs
cleaner = clean.Cleaner(safe_attrs_only=True, safe_attrs=frozenset())
cleansed = cleaner.clean_html(code)

print(cleansed)

产量

<tr></tr>