mod9-py3dstasks

Module 9 - Migrate from Python 2 to 3 and Cloud NDB to Cloud Datastore

This repo folder is the corresponding Python 3 code to the Module 9 codelab (TBD). The tutorial STARTs with the Python 2 code in the Module 8 repo folder and leads developers through migrating from Python 2 to 3, Cloud NDB to Cloud Datastore plus any changes from Cloud Tasks v1 to v2, culminating in the code in this folder. One major addition to look for here vs. Module 8 is that App Engine taskqueue creates a default push queue while Cloud Tasks does not, so that now has to be done in code.

NOTE: Backport to Python 2: When migrating this app to Python 3, we added a Python 3 dependency: the print() function. If for any reason you need to get back on Python 2 App Engine, you would have to:

1. Decide on your logging strategy. The Python 2 App Engine runtime now allows writing to stdout, so you don't have to revert back to logging.info() (or preferred logging level), however writing to stdout defaults to logging.error(). If that is acceptable and to continue with print(), add this import (above all others) at top of main.py:

from __future__ import print_function

2. Revert back to your Python 2 configuration files. For this app, it would be the Module 8 app.yaml and appengine_config.py files.