Hi,
I've my own Tinywebdb running on google app engine for some years. I adjusted the main.py so next to the App created with App Inventor users can also use a web page. In the past I succeeded to migrate from python 2.5 to 2.7. Before the end of the year a migration to python 3.x has to be done. I'm not a developer and have no clue how to do this (e.g. webapp2 is currently used and it seems I have to use django or flask now for python 3). Did someone already did such a migration and if so could you share the changes in the app.yaml and main.py (and other files if needed)? Hope someone can help!