I know there are various tools for creating android apps using python eg python-for-android, android-scripting-evrironment, SL4A etc.
What I need to know is which of these would be helpful if I need my application to use the Bluetooth module of the device.
There is a BluetoothFacade that has been implemented for the upcoming release 5 of SL4A.
The API reference is located at http://code.google.com/p/android-scripting/wiki/unofficial_apiref
I don’t believe that access to Bluetooth services is (at present) available via Kivy or any Kivy-derived project.