Programming Android apps in jython
As long as it compiles to pure java (with some constraints, as some APIs are not available), but I doubt that python will be of much use in  development of android-specific stuff like activities and  UI manipulation code. 
You also have to take care of application size - that is serious constraint for mobile developement.
The other day I came across a Python implementation called Jython.
With Jython you can write Java applications with Python and compile them to pure Java.  
I was wondering: Android programming is done with Java.
So, is it possible to make Android apps with Jython?