title: Using Oauth2 AccessToken of a particular user in gdata for retrieving picasa photos
body: <p>I have implemented python code for authentication user for picasa web albums referring this <a href="https://developers.google.com/api-client-library/python/guide/aaa_oauth#OAuth2WebServerFlow" rel="nofollow">documentation</a>! and I have recieved the user credentials for particular user.</p>
  
  <p>Now I want to use this access token to fetch a user's Picasa Web albums. But I am using gdata python library for it. Gdata has its own authentication process but I wish to use the credentials retrieved from above process.</p>
  
  <p>Is there a way to use this access_token explicitly and fetch Photos using gdata??</p>
  
  <p>The reference doc for gdata is <a href="https://developers.google.com/picasa-web/docs/1.0/developers_guide_python#upgrading-to-a-session-token" rel="nofollow">this</a>!</p>