Full Contact Search Code — Lessons in Google Authentication

Here’s the main code file for my Full Contact Search Application:
fullcontactsearch_code
I’m releasing it under the Apache license. Some of it is originally inspired from Google tutorials anyway. The portion of the code you may find useful is the self.GetAuthentication method. Basically, what you need to be able to do to permanently authenticate a user is:

Get [...]

Full Contact Search: Search all the fields of your Gmail contacts

I’ve created a new Web site called Full Contact Search using Google App Engine that allows you to search all fields from your Gmail contacts, not just name and e-mail. Check it out at http://fullcontactsearch.appspot.com.
When Google upgraded to a new version of its contact manager, it bizarrely took away the ability to search fields like [...]