Adding a Robots.txt file
At first it isn't clear how to add a robots.txt or favicon.ico file to your Google App Engine project.
I found the following works nicely.
Create a sub-directory static and add the robots.txt and favicon.ico files there.
Then add the following to your yaml file.
- url: /favicon.ico static_files: static/favicon.ico upload: static/favicon.ico - url: /robots.txt static_files: static/robots.txt upload: static/robots.txt
You can verify after updating your application with a query on the robots.txt file.