Set environment variables in GAE control panel
You can store your keys in datastore. Later when you need them in the code, you can fetch them from datastore and cache them by memcache.
I deploy my project to GAE over Github. There is some foreign API-key which I don't want to save in repository and make them public. Is it possible to set an environment variable for a project in GAE control panel so I can catch it in my application?