$ pip install bleach
python
import bleach
ALLOWED_TAGS = ['p', 'h1', 'h2', 'h3', 'a', 'img']
ALLOWED_ATTRIBUTES = {
'a': ['href', 'title'],
'img': ['src', 'alt']
}
clean_input = bleach.clean(user_input, tags=ALLOWED_TAGS, attributes=ALLOWED_ATTRIBUTES)
print(clean_input)