code: def get_uservars(self, user=None):
          
  
          if user is None:
              # All the users!
              return self._session.get_all()
          else:
              # Just this one!
              return self._session.get_any(user)
docs: Get all variables about a user (or all users).
  
          :param optional str user: The user ID to retrieve all variables for.
              If not passed, this function will return all data for all users.
  
          :return dict: All the user variables.
  
              * If a ``user`` was passed, this is a ``dict`` of key/value pairs
                of that user's variables. If the user doesn't exist in memory,
                this returns ``None``.
              * Otherwise, this returns a ``dict`` of key/value pairs that map
                user IDs to their variables (a ``dict`` of ``dict``).