slackbuilds/python/python3-bleach

Bleach is a whitelist-based HTML sanitizing library that escapes or
strips markup and attributes.

Bleach can also linkify text safely, applying filters that Django's
urlize filter cannot, and optionally setting rel attributes, even on
links already in the text.

Bleach is intended for sanitizing text from untrusted sources. If you
find yourself jumping through hoops to allow your site administrators
to do lots of things, you're probably outside the use cases. Either
trust those users, or don't.