def add_metric_names(self, names):
        "Add `names` to the inner metric names."
        if hasattr(self, '_added_met_names'): self._added_met_names += names
        else:                                 self._added_met_names  = names
def add_metric_names ( self , names ) : if hasattr ( self , '_added_met_names' ) : self . _added_met_names += names else : self . _added_met_names = names
Add `names` to the inner metric names.