Google contacts import using oauth2.0

Question

What possible ways to import google contacts using python and oauth2.0 exists?

We successfully got credentials, and our application requests access

Answer 1

Final solution was relatively easy.

Step 1 Obtain oauth2.0 token. It's pretty documented in official docs: http://code.google.com/p/google-api-python-client/wiki/OAuth2

Step 2 Now we have token, but can not discover contacts API. But you can find, that in oauth2.0 playground you can import contacts. https://code.google.com/oauthplayground/

You can find, that you have access token in credentials, obtained in Step 1. To access contacts api you must add to headers following param 'Authorization':'OAuth %s' % access_token

Step 3 Now you must pass to google library token, that will be compatible with oauth1.0 token. It can be done by following code:

from atom.http import ProxiedHttpClient #Google contacts use this client
class OAuth2Token(object):
    def __init__(self, access_token):
        self.access_token=access_token

    def perform_request(self, *args, **kwargs):
        url = 'http://www.google.com/m8/feeds/contacts/default/full'
        http = ProxiedHttpClient()
        return http.request(
            'GET',
            url,
            headers={
                'Authorization':'OAuth %s' % self.access_token
            }
        )
google = gdata.contacts.service.ContactsService(source='appname')
google.current_token = OAuth2Token(oauth2creds.access_token)
feed = google.GetContactsFeed()