blackjack.py

# IMPORT MODULES AND DEFINE VARIABLES

import random

playing = True


# CLASSES

class Card:  # Creates all the cards

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

    def __str__(self):
        return self.rank + ' of ' + self.suit


class Deck:  # creates a deck of cards

    suits = ('Hearts', 'Diamonds', 'Spades', 'Clubs')
    ranks = ('Two', 'Three', 'Four', 'Five', 'Six', 'Seven',
             'Eight', 'Nine', 'Ten', 'Jack', 'Queen', 'King', 'Ace')

    def __init__(self):
        self.deck = []  # haven't created a deck yet
        for suit in Deck.suits:
            for rank in Deck.ranks:
                self.deck.append(Card(suit, rank))

    def __str__(self):
        deck_comp = ''
        for card in self.deck:
            deck_comp += '\n ' + card.__str__()
        return 'The deck has: ' + deck_comp

    def shuffle(self):  # shuffle all the cards in the deck
        random.shuffle(self.deck)

    def deal(self):  # pick out a card from the deck
        single_card = self.deck.pop()
        return single_card


class Hand:   # show all the cards that the dealer and player have

    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}

    def __init__(self):
        self.cards = []
        self.value = 0
        self.aces = 0  # keep track of aces

    def add_card(self, card):  # add a card to the player's or dealer's hand
        self.cards.append(card)
        self.value += Hand.values[card.rank]
        if card.rank == 'Ace':
            self.aces += 1

    def adjust_for_ace(self):
        while self.value > 21 and self.aces:
            self.value -= 10
            self.aces -= 1


class Chips:   # keep track of chips

    def __init__(self):
        self.total = 100
        self.bet = 0

    def win_bet(self):
        self.total += self.bet

    def lose_bet(self):
        self.total -= self.bet


# FUNCTIONS

def take_bet(chips):  # ask for user's bet

    while True:
        try:
            chips.bet = int(input("How many chips would you like to bet? "))
        except ValueError:
            print("Sorry! Please can you type in a number: ")
        else:
            if chips.bet > chips.total:
                print("You bet can't exceed 100!")
            else:
                break


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


def hit_or_stand(deck, hand):   # hit or stand
    global playing

    while True:
        ask = input(
            "\nWould you like to hit or stand? Please enter 'h' or 's': ")

        if ask[0].lower() == 'h':
            hit(deck, hand)
        elif ask[0].lower() == 's':
            print("Player stands, Dealer is playing.")
            playing = False
        else:
            print("Sorry! I did not understand that! Please try again!")
            continue
        break


def show_some(player, dealer):
    print("\nDealer's Hand: ")
    print(" <card hidden>")
    print("", dealer.cards[1])
    print("\nPlayer's Hand: ", *player.cards, sep='\n ')


def show_all(player, dealer):
    print("\nDealer's Hand: ", *dealer.cards, sep='\n ')
    print("Dealer's Hand =", dealer.value)
    print("\nPlayer's Hand: ", *player.cards, sep='\n ')
    print("Player's Hand =", player.value)


# Game endings

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


def player_wins(player, dealer, chips):
    print("PLAYER WINS!")
    chips.win_bet()


def dealer_busts(player, dealer, chips):
    print("DEALER BUSTS!")
    chips.win_bet()


def dealer_wins(player, dealer, chips):
    print("DEALER WINS!")
    chips.lose_bet()


def push(player, dealer):
    print("Its a push! Player and Dealer tie!")


# Gameplay!

while True:
    print("Welcome to BlackJack!")

    # create an shuffle deck
    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()

    # ask player for bet
    take_bet(player_chips)

    # show cards
    show_some(player_hand, dealer_hand)

    while playing:

        hit_or_stand(deck, player_hand)
        show_some(player_hand, dealer_hand)

        if player_hand.value > 21:
            player_busts(player_hand, dealer_hand, player_chips)
            break

    if player_hand.value <= 21:

        while dealer_hand.value < 17:
            hit(deck, dealer_hand)

        show_all(player_hand, dealer_hand)

        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)

        if player_hand.value > 21:
            player_busts(player_hand, dealer_hand, player_chips)

    print("\nPlayer's winnings stand at", player_chips.total)

    new_game = input("\nWould you like to play again? Enter 'y' or 'n': ")
    if new_game[0].lower() == 'y':
        playing = True
        continue
    else:
        print("\nThanks for playing!")
        break