Back in 2012 I was looking at Python on Android. It looks like there has been a lot of development since then. In 2012 the only scripting project for Android that I was aware of was sl4a. It did not appear to offer what we really needed and there were alternatives that seemed to have more potential. Essentially when the Raspberry Pi became available there was a low cost system that could interact with hardware and could be accessed via a network and wifi. One could use a web browser on the Android or a Secure Shell (SSH) terminal. The Raspberry Pi itself offers everything available in Debian Linux. Later the Intel Edison became available with Yacto Linux and on board wifi. In 2016 the Raspberry Pi 3 became available with built in WiFi.
The Python for Android project looks to have more possibilities than the older project.