class CardDeckModel(models.Model):
    deck_name = models.CharField(max_lenght=100)


class CardModel(models.Model):
    ranks = [str(n) for n in range(2, 11)] + list('JQKA')
    suite = list('CDHS')

    Clubs = 'C'
    Diamonds = 'D'
    Hearts = 'H'
    Spades = 'S'
    COLORS = (
        (Clubs, 'Clubs'),
        (Diamonds, 'Diamonds'),
        (Hearts, 'Hearts'),
        (Spades, 'Spades'),
    )

    ACE = 'A'
    TWO = '2'
    THREE = '3'
    FOUR = '4'
    FIVE = '5'
    SIX = '6'
    SEVEN = '7'
    EIGHT = '8'
    NINE = '9'
    TEN = '10'
    JACK = 'J'
    QUEEN = 'Q'
    KING = 'K'

    RANKS = (
        (ACE, 'Ace'),
        (TWO, '2'),
        (THREE, '3'),
        (FOUR, '4'),
        (FIVE, '5'),
        (SIX, '6'),
        (SEVEN, '7'),
        (EIGHT, '8'),
        (NINE, '9'),
        (TEN, '10'),
        (JACK, 'Jack'),
        (QUEEN, 'Queen'),
        (KING, 'King'),
    )

    deck = models.ForeignKey(CardDeckModel)
    rank = models.CharField(max_lenght=6, choices=RANKS)
    color = models.CharField(max_lenght=1, choices=COLORS)

    def __init__(self, deck):
        cards = [CardModel(deck=deck, rank=card_rank, color=card_suite) for card_rank in ranks
                                                                        for card_suite in suite]
        for i in cards:
            i.save()

    def is_card_exist(self, rank, color):
        try:
            card = CardModel.objects.get(rank=rank, color=color)
        except CardModel.DoesNotExist:
            return False
        else:
            return True

    def save(self, *args, **kwargs):
        if self.is_card_exist():
            raise ValueError('Card is already exist')
        else:
            super(CardModel, self).save(*args, **kwargs)