Can I use get on a key in a jinja template?
Looks like you're confused between NDB keys and db keys. The db.Key class (here shown as datastore_types.Key) does not have a get() method.  However the NDB Key class (which would be google.appengine.ext.ndb.key.Key) does.
I have a list of keys and I'm trying to get the object(s) in a Jinja2 template:
{{item.cities[0].get().name}}
UndefinedError: 'google.appengine.api.datastore_types.Key object' has no attribute 'get'
I thought one could use get() on a key even in a template but here I get the error. Is it true that it can't be done?