Starting from release 20180723 and engine 4.20 you can deploy the UnrealEnginePython plugin on android devices (both for launching and for packaging).

Packaging is a bit more complex as Unreal generates a fake .obb file along the .apk file.

This .obb file is a simple .zip file containing the .pak file as well as your Scripts directory. As this is not a true android .obb file, we cannot mount it as a filesystem (using the android StorageManager api) so we need to treat it as a simple zip file.

Lucky enough, python supports getting modules from a zip file, so just adding the .obb file to its modules search path will be more than enough (the UnrealEnginePython plugin does it automatically).

The problem is that python does not support zip files into zip files (stdlib.zip is into the .obb file) so to allow packaged games to run we need to decompress stdlib.zip in the Scripts directory. This will result in our Scripts directory being clobbered with additional .py files (feel free to propose better solutions).

Once the stdlib.zip file is decompressed you can package your project and upload it to the device.

Try to use python 3.5 even for the editor, otherwise the files extracted from stdlib.zip could cause problems (the SRE exception is the first you should get in such a case)

Python 3.6, albeit not tested, should work.

Any python 3 release built from the Crystax NDK should work too. Just compile it, copy the related files into the repository android/ directory and change https://github.com/20tab/UnrealEnginePython/blob/master/Source/UnrealEnginePython/UnrealEnginePython_APL.xml and

https://github.com/20tab/UnrealEnginePython/blob/master/Source/UnrealEnginePython/UnrealEnginePython.Build.cs accordingly.