How do I get a list of namespaces on google app engine?

Question

I would like to make a backup of all user data in the datastore. My application is using the new namespace feature to provide multi tenanting on a per user basis (as per the ex

Answer 1

There is also now a get_namespaces() function:

from google.appengine.ext.db import metadata

namespaces = metadata.get_namespaces() 

get_namespaces() returns a list of Namespace objects. The docs also note that "metadata queries that fetch information on namespaces, kinds, and properties are generally slow to execute."