How to create a Layers App
Delete all unneeded directories or temporary files from the directory.
This includes copied Recycle Bin info, hidden files, etc.
Rename the .py file you want your app to run on launch to main.py (and refactor code if needed) and create an app_properties directory.
Compress your app_properties, main.py, and all other files in this directory to a .ZIP file.
Rename the .ZIP file from .zip to .japp.