How do I get the Application ID at runtime

Question

I need the Application ID to construct the correct <applicationid>.appspotmail.com address, and I'm having a hard time finding out how to retrieve it at runtime.

Answer 1

The recommended approach now is to use app_identity.get_application_id():

http://code.google.com/appengine/docs/python/appidentity/functions.html#get_application_id

See the warning box here for details:

http://code.google.com/appengine/docs/python/runtime.html#Requests_and_Domains

Answer 2

You can get it using:

os.environ['APPLICATION_ID']