Is there a Python REPL for the Google App Engine?

Clojure / Compojure people have a replacement for the Google App Engine, do Python people have something similar? I quite often use a replica in the development of "vanilla" python, and it would be very useful if I could use it in the Google App Engine Python.

I saw the following demo from http://shell.appspot.com/ , and I mostly hoped that a replacement could happen for any Python App Engine project that gave me an answer; even if repl only works with the dev server. Does anyone know about this?

here is the source code for this demo, just for completeness.