Deliverance is a great library that lets you easily re-theme external websites on the fly. Designed as WSGI middleware, it can be easily combined with some proxying to integrate a bunch of websites together
You can use deliverance plus proxying out-of-the-box using the deliverance-proxy command. However, I was interested in using Deliverance as middleware from code. This turned out to be none too trivial to do — all the examples on the internet seemed to focus on using deliverance-proxy or using it in an ini file.
After much wrestling, most notably with odd issues with gzipped (deflated) content I got it working and you can find a demo implementation (see demo.py and README.txt) here:
http://rufuspollock.org/code/deliverance/
I should also mention the following sources which were all of help in my quest:
- http://codespeak.net/svn/z3/deliverance/sandbox/ianb/ploneconf2008/index.txt
- http://www.gawel.org/weblog/en/2008/12/skinning-with-pyquery-and-deliverance
- http://macadames.wordpress.com/2009/05/23/some-deliverance-tips/
- http://www.coactivate.org/projects/deliverance/lists/deliverance-discussion/archive/2009/05/1241444934295/forum_view
- http://www.sixfeetup.com/blog/2009/4/27/deploying-plone-and-zine-together-with-deliverance-using-repoze
