code: def revoke(client_id, client_secret,
          client_email=None, private_key=None,
          access_token=None, refresh_token=None,
          identity=None, prefix=None, suffix=None):
  
      
  
      if client_email and private_key:
          raise ValueError('Two-legged OAuth does not use revokable tokens.')
      
      credentials = oauth.Credentials.find(
          complete=True,
          interactive=False,
          identity=identity,
          client_id=client_id,
          client_secret=client_secret,
          access_token=access_token,
          refresh_token=refresh_token,
          prefix=prefix,
          suffix=suffix,
          )
  
      retval = credentials.revoke()
      keyring.delete(credentials.identity)
      return retval
docs: Given a client id, client secret and either an access token or a refresh token,
      revoke OAuth access to the Google Analytics data and remove any stored credentials
      that use these tokens.