Notice: Over the next few months, we're reorganizing the App Engine documentation site to make it easier to find content and better align with the rest of Google Cloud products. The same content will be available, but the navigation will now match the rest of the Cloud products.

Python 3.10 is now available in preview.


Check if this property can be stored.

request_trusted If the request is trusted.
request_app_id The application ID of the app making the request.
prop entity_pb2.Property
indexed Whether the property is indexed.

apiproxy_errors.ApplicationError if the property is invalid