(self, *args)
return dict(chain(*[d.items() for d in args]))
Args:
            dictionaries with disjoint keys.

        Returns:
            a single dictionary that has the union of these keys.
Args:
            dictionaries with disjoint keys.
Args : dictionaries with disjoint keys .
def _join_dicts(self, *args):
        """
        Args:
            dictionaries with disjoint keys.

        Returns:
            a single dictionary that has the union of these keys.
        """
        return dict(chain(*[d.items() for d in args]))
def _join_dicts ( self , * args ) : return dict ( chain ( * [ d . items ( ) for d in args ] ) )