tornado.auth
These classes implement the OpenID and OAuth standards. They will generally need to be subclassed to use them with any particular site. The degree of customization required will vary, but in most cases overridding the class attributes (which are named beginning with underscores for historical reasons) should be sufficient.
OpenIdMixin
OAuthMixin
authorize_redirect
get_authenticated_user
_oauth_consumer_token
_oauth_get_user_future
get_auth_http_client
OAuth2Mixin
GoogleMixin
GoogleOAuth2Mixin
FacebookGraphMixin
FacebookMixin
TwitterMixin
FriendFeedMixin