I want to read a Google Spreadsheet from a python App Engine application. I have used the Google APIs Client Library for Python for a few things. https://developers.google.com/api-client-library/python/start/installation
I see how I could use that with the Drive API. However, for spreadsheets, it seems that the old gdata Google Spreadsheets API using OAUTH 2.0 has the right api / features. https://developers.google.com/google-apps/spreadsheets/#authorizing_requests_with_oauth_20
So I am a little confused. Currently (May 2014), what is the correct and best api to use for this case of reading spreadsheets?