def get_namespace_keys(app, limit):
 ns_query = datastore.Query('__namespace__', keys_only=True, _app=app)
 return ns_query.Get(limit=limit)

def get_namespace_keys ( app , limit ) : ns_query = datastore . Query ( '__namespace__' , keys_only = True , _app = app ) return ns_query . Get ( limit = limit )
get namespace keys .