def __init__(self, card_type, trait):
        ''' Initialize the class of MahjongCard

        Args:
            card_type (str): The type of card
            trait (str): The trait of card
        '''
        self.type = card_type
        self.trait = trait
        self.index_num = 0
 Initialize the class of MahjongCard

        Args:
            card_type (str): The type of card
            trait (str): The trait of card
        
rlcard/games/mahjong/card.py