This is an updated version of the ndb client library for use with Google Cloud Datastore. Client Library Documentation - https://googleapis.dev/python/python-ndb/latest Product Documentation - https://cloud.google.com/datastore/docs The original Python 2 version of ndb was designed specifically for the Google App Engine python27 runtime and can be found at https://github.com/GoogleCloudPlatform/datastore-ndb-python. This version of ndb is designed for the Google App Engine Python 3 runtime, and will run on other Python platforms as well.