Module 15b - Usage of App Engine blobstore with Flask framework in Python 3

This repo folder is the corresponding Python 3 version of the Module 15 app.

• All files in this folder are identical to the Python 2 code in the Module 15 repo folder except:
  1. app.yaml was modified for the Python 3 runtime.
  2. appengine_config.py is unused and thus deleted.
• The Python 3 version of the Module 15 app (Module 15 repo folder) features the use of Blobstore handlers classes.