blackjack.py

import random

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

    def __str__(self):
        return f"{self.rank['rank']} of {self.suit}"


class Deck:
    def __init__(self):
        self.cards = []
        suits = ["♠", "♣️", "♥️", "♦️"]
        ranks = [
                {"rank": "A", "value": 11},
                {"rank": "2", "value": 2},
                {"rank": "3", "value": 3},
                {"rank": "4", "value": 4},
                {"rank": "5", "value": 5},
                {"rank": "6", "value": 6},
                {"rank": "7", "value": 7},
                {"rank": "8", "value": 8},
                {"rank": "9", "value": 9},
                {"rank": "10", "value": 10},
                {"rank": "J", "value": 10},
                {"rank": "Q", "value": 10},
                {"rank": "K", "value": 10},
            ]
        for suit in suits:
          for rank in ranks:
            self.cards.append(Card(suit, rank))

    def deal(self):
        if len(self.cards) > 1:
            return self.cards.pop(0)

    def shuffle(self):
        if len(self.cards) > 1:
            random.shuffle(self.cards)
            

class Hand:
    def __init__(self, dealer=False):
        self.dealer = dealer
        self.cards = []
        self.value = 0

    def add_card(self, card):
        self.cards.append(card)

    def calculate_value(self):
        self.value = 0
        has_ace = False
        for card in self.cards:
            self.value += int(card.rank["value"])
            if card.rank["rank"] == "A":
                has_ace = True

        if has_ace and self.value > 21:
            self.value -= 10

    def get_value(self):
        self.calculate_value()
        return self.value

    def is_blackjack(self):
        return self.get_value() == 21

    def display(self):
        if self.dealer:
            print(self.cards[0]) if self.is_blackjack() else print("hidden")
            print(self.cards[1])
        else:
            for card in self.cards:
                print(card)
            print("Value:", self.get_value())


class Game:
    def play(self):
        playing = True
        game_number = 0
        games_to_play = 0

        while games_to_play <= 0:
            try:
                games_to_play = int(input('How many games do you want to play? '))
            except:
                print('You must enter a number.')
        
        while playing:
            game_number += 1
            deck = Deck()
            deck.shuffle()

            player_hand = Hand()
            dealer_hand = Hand(dealer=True)

            for i in range(2):
                player_hand.add_card(deck.deal())
                dealer_hand.add_card(deck.deal())

            print(f"* Game {game_number} of {games_to_play} *")
            print("Your hand:")
            player_hand.display()
            print()
            print("Dealer's hand:")
            dealer_hand.display()

            game_over = False

            while not game_over:
                if player_hand.is_blackjack() or dealer_hand.is_blackjack():
                    game_over = True
                    self.show_blackjack_results(player_hand.is_blackjack(), dealer_hand.is_blackjack())
                    continue

                choice = input("Please choose 'Hit' or 'Stand' ").lower()
                while choice not in ["h", "s", "hit", "stand"]:
                    choice = input("Please enter 'hit' or 'stand' (or H/S) ").lower()
                if choice in ['hit', 'h']:
                    player_hand.add_card(deck.deal())
                    player_hand.display()
                    if player_hand.get_value() > 21:
                        print("You busted. Dealer wins!")
                        game_over = True
                else:
                    player_hand_value = player_hand.get_value()
                    dealer_hand_value = dealer_hand.get_value()

                    print("Final Results")
                    print("Your hand:", player_hand_value)
                    print("Dealer's hand:", dealer_hand_value)

                    if player_hand_value > dealer_hand_value:
                        print("You win!")
                    elif player_hand_value == dealer_hand_value:
                        print("Tie!")
                    else:
                        print("Dealer wins!")
                    game_over = True
            
            if game_number >= games_to_play:
                print("Thanks for playing!")
                playing = False
            else:
                print()
                game_over = False

    def show_blackjack_results(self, player_has_blackjack, dealer_has_blackjack):
        if player_has_blackjack and dealer_has_blackjack:
            print("Both players have blackjack! Draw!")

        elif player_has_blackjack:
            print("You have blackjack! You win!")

        elif dealer_has_blackjack:
            print("Dealer has blackjack! Dealer wins!")


g = Game()
g.play()