I found error in primer at page<https://developers.google.com/appengine/docs/python/ndb/queries#projection> .
Incorrect version: qry = Article.query(projection=[Article.author, Article.tags]) articles = qry.fetch(20) Correct version of primer qo = ndb.QueryOptions(projection=['author', 'tags']) qry = Article.query() articles = qry.fetch(20, options=qo) Maybe that help someone. Sorry for my english. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-appengine/-/mIYyrcVPATgJ. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
