ImportError: No module named wsgiref.handlers
This can be solved by installing the Python Extension wsgiref. I've created an SRPM which can be rebuilt quite easily.
After the installation of WSGI, the google_appengine/dev_appserver.py still does not find the library. This can be solved by configuring the wsgire as a third party module.
ln -s /usr/lib/python-2.4/site-packages/wsgiref
Now it should be possible to run the Google App:
* Google App Engine
* Application Gallery