blackjack_game.py

class Card:
    def __init__(self, value, suit):
        self.value = value
        self.suit = suit

    def __str__(self):
        return f"{self.value} of {self.suit}"
    
    def __repr__(self):
        return f"{self.value} of {self.suit}"
    
    def __eq__(self, other):
        return self.value == other.value and self.suit == other.suit
    
    def __ne__(self, other):
        return self.value != other.value or self.suit != other.suit
    
    def __lt__(self, other):
        return self.value < other.value
    
    def __le__(self, other):
        return self.value <= other.value
    
    def __gt__(self, other):
        return self.value > other.value
    
    def __ge__(self, other):
        return self.value >= other.value
    
    def __add__(self, other):
        return self.value + other.value
    
    def __sub__(self, other):
        return self.value - other.value
    

class Deck:
    def __init__(self):
        self.cards = []
        for suit in ['Hearts', 'Diamonds', 'Clubs', 'Spades']:
            for value in range(1, 14):
                self.cards.append(Card(value, suit))
    
    def __str__(self):
        return f"{len(self.cards)} cards in deck"
    
    def __repr__(self):
        return f"{len(self.cards)} cards in deck"
    
    def __len__(self):
        return len(self.cards)
    
    def shuffle(self):
        import random
        random.shuffle(self.cards)
    
    def deal(self):
        import random
        return random.choice(self.cards)
    
    
class Hand:

    def __init__(self):
        self.cards = []
    
    def __str__(self):
        return f"{len(self.cards)} cards in hand"
    
    def __repr__(self):
        return f"{len(self.cards)} cards in hand"
    
    def add_card(self, card):
        self.cards.append(card)
    
    def score(self):
        score = 0
        num_aces = 0
        for card in self.cards:
            if card.value == 1:
                score += 11
                num_aces += 1
            elif card.value in [11, 12, 13]:
                score += 10
            else:
                score += card.value
        while score > 21 and num_aces > 0:
            score -= 10
            num_aces -= 1
        return score
    
    def __lt__(self, other):
        return self.score() < other.score()
    
    def __le__(self, other):
        return self.score() <= other.score()
    
    def __gt__(self, other):
        return self.score() > other.score()
    
    def __ge__(self, other):
        return self.score() >= other.score()
    
    def __eq__(self, other):
        return self.score() == other.score()
    
    def __ne__(self, other):
        return self.score() != other.score()
    
    def __add__(self, other):
        return self.score() + other.score()
    
    def __sub__(self, other):
        return self.score() - other.score()
    
    def __len__(self):
        return len(self.cards)
    
    def __getitem__(self, key):
        return self.cards[key]
    
    def __setitem__(self, key, value):
        self.cards[key] = value


class BlacjackGame:
    def __init__(self):
        self.deck = Deck()
        self.deck.shuffle()
        self.player = Hand()
        self.dealer = Hand()

        self.game_over = False
        self.player_busted = False
        self.dealer_busted = False
        self.player_blackjack = False
        self.dealer_blackjack = False
        self.player_stands = False
        self.dealer_stands = False
        self.player_wins = False
        self.dealer_wins = False
        self.tie = False

        self.player.add_card(self.deck.deal())
        self.player.add_card(self.deck.deal())

        self.dealer.add_card(self.deck.deal())
        self.dealer.add_card(self.deck.deal())



    def player_hit(self):
        if not self.player_busted and not self.player_blackjack and not self.player_stands:
            self.player.add_card(self.deck.deal())
            if self.player_score() > 21:
                self.player_busted = True
                self.dealer_wins = True
                self.game_over = True
            elif self.player_score() == 21:
                self.player_blackjack = True
                self.player_wins = True
                self.game_over = True

    def player_stand(self):
        if not self.player_busted and not self.player_blackjack:
            self.player_stands = True

    def dealer_turn(self):
        while not self.dealer_busted and not self.dealer_blackjack and not self.dealer_stands and self.dealer_score() < 17:
            self.dealer_hit()

        if not self.dealer_busted and not self.dealer_blackjack and not self.dealer_stands:
            self.dealer_stand()

    def dealer_hit(self):
        if not self.dealer_busted and not self.dealer_blackjack and not self.dealer_stands:
            self.dealer.add_card(self.deck.deal())
            if self.dealer_score() > 21:
                self.dealer_busted = True
                self.player_wins = True
                self.game_over = True
            elif self.dealer_score() == 21:
                self.dealer_blackjack = True
                self.dealer_wins = True
                self.game_over = True

    def dealer_stand(self):
        if not self.dealer_busted and not self.dealer_blackjack:
            self.dealer_stands = True

    def check_winner(self):
        if self.player_stands and self.dealer_stands:
            if self.player_score() > self.dealer_score():
                self.player_wins = True
                self.game_over = True

            elif self.player_score() < self.dealer_score():
                self.dealer_wins = True
                self.game_over = True

            else:
                self.tie = True
                self.game_over = True

    def player_score(self):
        return self.player.score()
    
    def dealer_score(self):
        return self.dealer.score()

    def __str__(self):
        return f"Player score: {self.player_score()}\nDealer score: {self.dealer_score()}"
    
    def __repr__(self):
        return f"Player score: {self.player_score()}\nDealer score: {self.dealer_score()}"
    
    def __len__(self):
        return len(self.deck)
    
    def __getitem__(self, key):
        return self.deck[key]
    
    def __setitem__(self, key, value):
        self.deck[key] = value

    def __eq__(self, other):
        return self.player_score() == other.player_score() and self.dealer_score() == other.dealer_score()
    
    def __ne__(self, other):
        return self.player_score() != other.player_score() or self.dealer_score() != other.dealer_score()
    
    def __lt__(self, other):
        return self.player_score() < other.player_score() and self.dealer_score() < other.dealer_score()
    
    def __le__(self, other):
        return self.player_score() <= other.player_score() and self.dealer_score() <= other.dealer_score()
    
    def __gt__(self, other):
        return self.player_score() > other.player_score() and self.dealer_score() > other.dealer_score()
    
    def __ge__(self, other):
        return self.player_score() >= other.player_score() and self.dealer_score() >= other.dealer_score()
    
    def __add__(self, other):
        return self.player_score() + other.player_score() + self.dealer_score() + other.dealer_score()
    

def user_plays(game):
    print(f"Player hand: {game.player_score()}")
    for card in game.player:
        print(card)

    print("Dealer hand:")
    print(game.dealer[0])

    action = input("Do you want to hit or stand? ")
    if action == "hit":
        game.player_hit()
    elif action == "stand":
        game.player_stand()


def best_strategy_game(game):

    if game.player_score() < 17:
        game.player_hit()
    else:
        game.player_stand()


if __name__ == "__main__":
    game = BlacjackGame()

    while not game.game_over:

        print(game)
        print("")

        if game.player_stands:
            game.dealer_turn()
            game.check_winner()

        if not game.game_over:
            best_strategy_game(game)
        

    print(game)

    if game.player_wins:
        print("Player wins!")

    elif game.dealer_wins:
        print("Dealer wins!")