Predict the class label of DataFrame df

def predict_df(self, df, pstate_col=PSTATE_COL):
        """
        Predict the class label of DataFrame df
        """
        scores = {}
        for label, pohmm in self.pohmms.items():
            scores[label] = pohmm.score_df(df, pstate_col=pstate_col)
        max_score_label = max(scores.items(), key=itemgetter(1))[0]
        return max_score_label, scores