Barry,
I think you were posting in the wrong thread. I was talking about the nirvanix-python library that is hosted at code.google.com not how Nirvanix will interface with Google App Engine. Although, I am very interested in this as well, but the code I was talking about is located at http://code.google.com/p/nirvanix-python/source/browse/trunk/src/nirvanix/rest.py.