import collections from time import sleep from random import shuffle # TODO Add input checks to bets # TODO Only print one of the dealer's cards before player has a turn # TODO Add logic for double and split # TODO Make dealer's hit cards print one at a time, slowly, for dramatic effect Card = collections.namedtuple('Card', ['rank', 'suit']) CARD_VALS = {'2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9, '10': 10, 'J': 10, 'Q': 10, 'K': 10, 'A': 11} class Player: """ A class representing a player of blackjack. If no name or bankroll are set, __init__ retrieves from the console. """ cards = [] hand_value = 0 bet_amount = 0 def __init__(self, name='', bankroll=-1, is_dealer=False): if name != '': self.name = name else: self.name = self.input_name() if bankroll > 0: self.bankroll = bankroll else: self.bankroll = self.input_bankroll(self.name) self.is_dealer = is_dealer def reset(self, deck): self.cards = deck.get_start_cards() self.hand_value = self.get_hand_value() def adjust_bankroll(self,blackjack=False, double_down=False): if blackjack: multiplier = 2.5 elif double_down: multiplier = 4 else: multiplier = 2 self.bankroll = self.bet_amount * multiplier def input_bet_amount(self): print("CURRENT BANKROLL: $%s" % self.bankroll) self.bet_amount = int(input("Enter your bet amount: ")) self.bankroll -= self.bet_amount def input_name(self): """ Gets the player's name from the console. """ return input("Hello! What is your name? ") def input_bankroll(self, name=''): """ Gets the player's bankroll from the console. """ return int(input("What is your starting bankroll, %s? " % name)) def get_hand_value(self): hand_value = 0 aces = [c for c in self.cards if c.rank == 'A'] for card in self.cards: hand_value += CARD_VALS[card.rank] if hand_value > 21 and len(aces): for card in self.cards: if card.rank == 'A' and hand_value > 21: hand_value -= 10 return hand_value def print_cards(self, hide_card=True): if len(self.cards) <= 2 and hide_card and self.is_dealer: print(self.cards[0]) print("---*****-----*****----*****---") else: for card in self.cards: print(card) def print_name(self): print("-------- %s -----------\n" % self.name.upper()) def hit(self, deck): """ Add a card to player cards """ self.cards.append(deck.pop()) self.hand_value = self.get_hand_value() def print_hand_value(self, hide_card=True): if len(self.cards) <= 2 and hide_card and self.is_dealer: value = "**" else: value = self.hand_value print("\n============%s==============\n" % value) class Deck: """ A class that represents a deck of cards. Implements getitem, setitem, len, repr""" ranks = [str(n) for n in range(2, 11)] + list('JQKA') suits = 'spades diamonds clubs hearts'.split() def __init__(self): self._cards = [Card(rank, suit) for suit in self.suits for rank in self.ranks] def __len__(self): return len(self._cards) def __getitem__(self, position): return self._cards[position] def __setitem__(self, position, card): self._cards[position] = card def __repr__(self): outstr = '' for card in self: outstr += str(card) + '\n' return outstr def pop(self): """ Pops off the top card in the deck """ return self._cards.pop() def get_start_cards(self): return [self._cards.pop(), self._cards.pop()] def print_welcome(): print("Welcome to blackjack!") def get_start_cards(deck): """ Returns a list of two cards """ return [deck.pop(), deck.pop()] def play_hand(player_cards, dealer_cards): """ Play a hand of blackjack until player busts or stays """ pass def print_cards(*players): for p in players: p.print_name() p.print_cards() p.print_hand_value() def main(): """ MAIN """ print_welcome() player = Player() # Uncomment to get input from console #player = Player(name='Brent', bankroll=1000) dealer = Player(name='Dealer', bankroll=1, is_dealer=True) while player.bankroll > 0: print("\nHere we go, %s!\n" % player.name) deck = Deck() shuffle(deck) player.input_bet_amount() player.reset(deck) dealer.reset(deck) print_cards(dealer, player) if player.hand_value == 21: print("Blackjack!") player.win_hand(blackjack=True) else: answer = 'h' while answer == 'h' and player.hand_value <= 21: print("Your current hand value: %s" % player.hand_value) answer = input('Enter h for hit, d for double down, or s for stand: ') print("\n") if answer == 'h' or answer == 'd': player.hit(deck) print_cards(dealer, player) else: pass if player.hand_value > 21: print("Too bad, you lose. Sorry!") else: # IMPLEMENT DEALER HITS AND STANDS print("It's the dealer's turn.") print("You have %s." % player.hand_value) print("Dealer has %s." % dealer.hand_value) print("Good luck! Dealer's turn...") dealer.print_cards(hide_card=False) while dealer.hand_value < 17: sleep(2) dealer.hit(deck) print(dealer.cards[-1]) sleep(1) dealer.print_hand_value(hide_card=False) sleep(2) if dealer.hand_value > 21 or player.hand_value > dealer.hand_value: print("You win!") player.win_hand() elif dealer.hand_value > player.hand_value: print("You lose :(") if answer == 'd': player.bankroll -= player.bet_amount else: print("Tie!") player.bankroll += player.bet_amount if __name__ == '__main__': main()