Woah! That is very cool indeed. Time to start using SymPy Gamma instead of Wolfram|Alpha. Surprising that their GitHub repo has so few stars. Only 400 stars at the time of this writing. I mean, 400 stars is respectable of course, but seeing how cool this is I think they ought to have a lot more stars.
Just wanted to give a star but I saw the Google-junk and will wait until I know how you need to use Google stuff to use it because I've never read enough about GAE.