GDG-Url is a sample application written in python to help illustrate the use of Google App Engine. It includes a demonstration of:
- How to configure and deploy a simple application to the App Engine Infrastructure.
- The use of jinja2 templating to create a consistent and maintainable user interface.
- Implementing persistence with the underlying datastore.
- Defining code that uses the underlying webapp2 application to appropriately redirect or error when given a request.