def _has_high_card(self):
        '''
        Check the existence of high cards
        Returns:
            True: exist
            False: not exist
        '''
        if self.product == 1:
            return True
        else:
            return False

        Check the existence of high cards
        Returns:
            True: exist
            False: not exist
        
rlcard/games/limitholdem/utils.py