(self)
return list(tz.unique(tz.concatv(
            util.columns_in_filters(self.fit_filters),
            util.columns_in_filters(self.predict_filters),
            util.columns_in_formula(self.model_expression))))
Returns all the columns used in this model for filtering
        and in the model expression.
Returns all the columns used in this model for filtering
        and in the model expression.
Returns all the columns used in this model for filtering and in the model expression .
def columns_used(self):
        """
        Returns all the columns used in this model for filtering
        and in the model expression.

        """
        return list(tz.unique(tz.concatv(
            util.columns_in_filters(self.fit_filters),
            util.columns_in_filters(self.predict_filters),
            util.columns_in_formula(self.model_expression))))
def columns_used ( self ) : return list ( tz . unique ( tz . concatv ( util . columns_in_filters ( self . fit_filters ) , util . columns_in_filters ( self . predict_filters ) , util . columns_in_formula ( self . model_expression ) ) ) )