I have written a Python code which imports libraries like numpy, scipy, keras (deep learning). 
Is it possible to convert it to mobile .apk using say kivy?
I couldn't find any documentation specifying it is possible or not possible. Kindly help.
While there is a numpy recipe, i believe there is no scipy or keras one, and it's certainly going to be quite some work to do them, so while theorically yes, python-for-android would do the job, in practice, you'll have to get your hands dirty to get that going.
Converting Python Code to apk for Android?