When using App Engine Standard with python 3.7, none of the google.xxx libraries are available. You have to build your own, or use standard Python libraries. This goes for: auth
, users
, images
, search
, mail
, taskqueue
, memcache
, urlfetch
, deferred
, etc., and even the ndb
datastore interface.
For datastore, you use google-cloud-datastore
or some 3rd party.
For others, you use a standard Python library, e.g.: google.auth
=> rauth
, google.appengine.api.memcache
=> python-memcached
Read more here: https://cloud.google.com/appengine/docs/standard/python3/python-differences
That page recommends Google Identity Platform or Firebase Authentication to do authorization.