def _get_Four_of_a_kind_cards(self):
        '''
        Get the four of a kind cards among a player's cards
        Returns:
            (list): best five hand cards after sort
        '''
        Four_of_a_Kind = []
        cards_by_rank = self.cards_by_rank
        cards_len = len(cards_by_rank)
        for i in reversed(range(cards_len)):
            if cards_by_rank[i][0] == 4:
                Four_of_a_Kind = cards_by_rank.pop(i)
                break
        # The Last cards_by_rank[The Second element]
        kicker = cards_by_rank[-1][1]
        Four_of_a_Kind[0] = kicker

        return Four_of_a_Kind

        Get the four of a kind cards among a player's cards
        Returns:
            (list): best five hand cards after sort
        
rlcard/games/limitholdem/utils.py