Android : How to distinguish "Android" from other "Linux" operating systems in Python?

I'm running a Python script on my phone through QPython. The title pretty much explains the question. I basically need to check if the script is running on an android device. I've tried os.name, sys.platform and platform.system() but those just return various kinds of "Linux" or "Posix", which is not specific enough (as far as I know - maybe I am missing some relevant information here).

I considered trying to import the android module, and then use the success or failure of this to determine if the OS is Android. I don't really need the android module though, so this seems a bit excessive.