blackjack.py

import random

suits = ('Hearts', 'Diamonds', 'Spades', 'Clubs')
ranks = ('Two', 'Three', 'Four', 'Five', 'Six', 'Seven', 'Eight', 'Nine', 'Ten', 'Jack', 'Queen', 'King', 'Ace')
values = {'Two':2, 'Three':3, 'Four':4, 'Five':5, 'Six':6, 'Seven':7, 'Eight':8, 'Nine':9, 'Ten':10, 'Jack':10,
         'Queen':10, 'King':10, 'Ace':11}

playing = True

class Card:
    def __init__(self, suit, rank):
        self.suit = suit
        self.rank = rank
    
    def __str__(self):
        return f'{self.rank} of {self.suit}'
    
class Deck:
    def __init__(self):
        self.deck = []  # start with an empty list
        for suit in suits:
            for rank in ranks:
                self.deck.append(Card(suit, rank))
    
    def __str__(self):
        s = ""
        for card in self.deck:
            s += (card.__str__() + "\n")
        return s

    def shuffle(self):
        random.shuffle(self.deck)
        
    def deal(self):
        single_card = self.deck.pop()
        return single_card

class Hand:
    def __init__(self):
        self.cards = []  # start with an empty list as we did in the Deck class
        self.value = 0   # start with zero value
        self.aces = 0    # add an attribute to keep track of aces
    
    def add_card(self,card):
        self.cards.append(card)
        self.value += values[card.rank]
    
        if card.rank == 'Ace':
            self.aces += 1
    
    def adjust_for_ace(self):
        # If total value > 21 and I still have an Ace
        # Then change my Ace to be a 1 instead of 11
        # If self.aces == 0 this will equal False
        while self.value > 21 and self.aces:
            self.value -= 10
            self.aces -= 1

class Chips:
    def __init__(self, total = 100):
        self.total = total  # This can be set to a default value or supplied by a user input
        self.bet = 0
        
    def win_bet(self):
        self.total += self.bet
    
    def lose_bet(self):
        self.total -= self.bet

def take_bet(chips):
    while True:
        try:
            chips.bet = int(input("How many chips would you like to bet? "))
        except:
            print("Sorry, please provide an integer")
        else:
            if chips.bet > chips.total:
                print(f"Sorry, you do not have enough chips! You have: {chips.total} chips")
            else:
                break

def hit(deck,hand):
    hand.add_card(deck.deal())
    hand.adjust_for_ace()

def hit_or_stand(deck,hand):
    global playing  # to control an upcoming while loop
    while True:
        x = input('Hit or Stand? Enter h or s')
        if x[0].lower() == 'h':
            hit(deck, hand)
        elif x[0].lower() == 's':
            print("Player Stands, Dealer's Turn")
            playing = False
        else:
            print("Sorry, I did not understand that, Please enter h or s only!")
            continue
        break

def show_some(player,dealer):
    print('DEALERS HAND:')
    print('one card hidden!')
    print(dealer.cards[1])
    print('\n')
    print('PLAYERS HAND:')
    for card in player.cards:
        print(card)
    
def show_all(player,dealer):  
    print('DEALERS HAND:')
    for card in dealer.cards:
        print(card)
    print('\n')
    print('PLAYERS HAND:')
    for card in player.cards:
        print(card)

def player_busts(player, dealer, chips):
    print("BUST PLAYER!")
    chips.lose_bet()

def player_wins(player, dealer, chips):
    print("PLAYER WINS!")
    chips.win_bet()
    
def dealer_busts(player, dealer, chips):
    print("PLAYER WINS! DEALER BUSTED!")
    chips.win_bet()
    
def dealer_wins(player, dealer, chips):
    print("DEALER WINS!")
    chips.lose_bet()
    
def push(player, dealer):
    print("Dealer and player tie! PUSH")


if __name__ == '__main__':
    while True:
        # Print an opening statement
        print('Welcome to Blackjack')
        
        # Create & shuffle the deck, deal two cards to each player
        deck = Deck()
        deck.shuffle()
        
        player_hand = Hand()
        player_hand.add_card(deck.deal())
        player_hand.add_card(deck.deal())
        
        dealer_hand = Hand()
        dealer_hand.add_card(deck.deal())
        dealer_hand.add_card(deck.deal())
        
        # Set up the Player's chips
        player_chips = Chips()
        
        # Prompt the Player for their bet
        take_bet(player_chips)
        
        # Show cards (but keep one dealer card hidden)
        show_some(player_hand, dealer_hand)
        
        while playing:  # recall this variable from our hit_or_stand function
            
            # Prompt for Player to Hit or Stand
            hit_or_stand(deck, player_hand)
            
            # Show cards (but keep one dealer card hidden)
            show_some(player_hand, dealer_hand)
            
            # If player's hand exceeds 21, run player_busts() and break out of loop
            if player_hand.value > 21:
                player_busts(player_hand, dealer_hand, player_chips)
                break

        # If Player hasn't busted, play Dealer's hand until Dealer reaches 17
        if player_hand.value <= 21:
            while dealer_hand.value <= 17:
                hit(deck, dealer_hand)
        
            # Show all cards
            show_all(player_hand, dealer_hand)
        
            # Run different winning scenarios
            if dealer_hand.value > 21:
                dealer_busts(player_hand, dealer_hand, player_chips)
            elif dealer_hand.value > player_hand.value:
                dealer_wins(player_hand, dealer_hand, player_chips)
            elif dealer_hand.value < player_hand.value:
                player_wins(player_hand, dealer_hand, player_chips)
            else:
                push(player_hand, dealer_hand)
        
        # Inform Player of their chips total 
        print(f'\nPlayers total chips are at:{player_chips.total}')
        
        
        # Ask to play again
        new_game = input("Would you like to play another hand? y/n")
        
        if new_game[0].lower() == 'y':
            playing = True
            continue
        else:
            print("Thank you for playing!")
            break