htmlmin and html_slimmer are some simple html minifying tools for python. I have millions of html pages stored in my database and running htmlmin, I am able to reduce the page size between 5 and 50%. Neither of them do an optimal job at complete html minification (i.e. the font color #00000 can be reduced to #000), but it's a good start. I have a try/except block that runs htmlmin and then if that fails, html_slimmer because htmlmin seems to provide better compression, but it does not support non ascii characters.

Example Code:

import htmlmin
from slimmer import html_slimmer # or xhtml_slimmer, css_slimmer
try:
    html=htmlmin.minify(html, remove_comments=True, remove_empty_space=True)
except:
    html=html_slimmer( html.strip().replace('\n',' ').replace('\t',' ').replace('\r',' ')  )

Good Luck!