# BlackJack # # # # Created by Ole Jensen # # 26 July 2003 # # # # filename BlackJack ver. 0.5.py # # # # location (url) http://dbhome.dk/learningtoprogram/programs/# # BlackJack/ # # # # Catagogy: Card games; # # computer games; # # gambling # ##################################################################### # # # BlackJack ver. 0.5 Alpha # # You can read version history in 'BlackJack Ducumentation.txt' # # Check out the rules of blackjack at # # http://www.blackjackinfo.com/ # # # # Any ideas/recomendations/errors/whatever # # Just mail me at learning.python@dbmail.dk # # # ##################################################################### # importing modules import random from time import sleep import sys # Funcions def hit_or_stand(): print "Do you want to\n1 hit or\n2 stand?" def shuffle(): """deck = shuffle -> deck will be created,\nand consist of 6 decks of cards of 4 colours each.""" deck = [] colour = [ace, 2, 3, 4, 5, 6, 7, 8, 9, 10, jack, queen, king] for i in range(24): deck.append(colour[:]) return deck def deal(hand, deck): """deal(hand, deck) -> one card will be cut from the deck\nand copied to the hand.""" # We need a colour and a value using # random.randrange to get a random card from # the deck colour = random.randrange(0, len(deck)) if len(deck[colour]) == 0: del deck[colour] colour = random.randrange(0, len(deck)) value = random.randrange(0, len(deck[colour])) # Adding the card to hand hand.append(deck[colour][value]) # And deleting the card from the deck del(deck[colour][value]) def sum_(hand): """sum_(hand) -> returns the value that the player holds""" t = i = 0 for x in hand: t += x # This counts the value of the hand, counting ace as 11 if x == ace: i = i + 1 #Counts aces in hand if t == 21 and len(hand) == 2: return "BlackJack" elif i == 0: # If no ace's: do this if len(hand) == 5 and t <= 21: return 21 # If you hold five cards, it counts as 21 but < BJ else: return t elif i > 0: # If you hold ace(s) the sum must be calculated differently # 'Hard sum' is when you have no ace or ace(s) counts as 1 hard = t - i*10 # 'Soft sum' is the sum of hand carrying an ace with the value of 11 soft = t - (i-1)*10 # Hence 'i' is one less then with hard sum if len(hand) == 5 and hard <= 21: return 21 elif t > 21 and soft > 21: return hard else: return hard, soft else: # Just in case return "Out of Bounds" def count(deck): """count(deck) -> returns the amount of cards in the deck.""" i = 0 for x in deck: i += len(x) return i def dealer(hand): """Dealer(hand) -> returns 1 if dealer has to hit""" if (sum_(hand) < 17) or ((type(sum_(hand)) == tuple) and (sum_(hand)[1] <= 17)): return 1 else: return 0 def win_lose(dhand, phand): """Win_lose(dhand, phand) -> returns the hand that wins.\n Dhand is the dealers hand and phand is the players hand.""" play = sum_(phand) deal = sum_(dhand) if type(play) == tuple: play = play[1] if type(deal) == tuple: deal = deal[1] if play == "BlackJack" and play != deal: return "BJ" elif (play > deal) or ((deal > 21) and deal!= "BlackJack"): return 1 elif (play < deal) or (deal == "BlackJack" and deal != play): return 0 else: return 2 # Defining card values # As default ace is 11. Check sum_() above. ace = 11 jack = queen = king = 10 # Starting with a fresh deck of cards deck_cards = shuffle() money = 100 print "Before finding a game, you check your wallet." print "You've got %s$" % money # Bet will be a string until we change it. bet = raw_input("Place your bet, please:\n>") # If the player bets 0, he quits the game. # however the value bet is a raw_input() (a string) and # we haven't change the value to an integer # yet. Therefore bet needs to be different # from the string value 0 (zero) to start # playing. while bet != "0": # Just making sure the player typed what # he was told. So if he didn't enter an # integer he will stay in this loop, until # he does, or 'till the world disolves into # atoms! while type(bet) != int: try: # using eval to check (below) to see if the # player tries to bet a floating number bet = eval(bet) except: if type(bet) == float: # The player might think it is ok to bet # floating numbers, so let's tell him its # not! print "Your need to bet a whole amount of $" elif type != int: print "Your bet should be in US$" bet = raw_input("Place your bet please:\n>") if bet == 0: sys.exit() # Wow we finished that loop. Hence bet must now be an integer! # Well we can't play for free... money = money - bet # minimum bet is 5 and max bet is 50. # So bet should be between those numbers. if 5 <= bet <= 50: # Just reseting the values from last game hand = [] # Player hand is always empty when starting dhand = [] # As well as the dealers hand bust = 0 # And bust is false (for now ;-)) if count(deck_cards) < 20: # if needed: shufle deck_cards = shuffle() print "Shufling" print "." sleep(1) print "." sleep(1) print "." deal(hand, deck_cards) deal(hand, deck_cards) if type(sum_(hand))== tuple: #i.e. more than one value # make sure the string can handle that print "You hold:", hand, "sum: %s/%s" % (sum_(hand)[0], sum_(hand)[1]) else: print "you hold:", hand, "sum: %s" % (sum_(hand)) if sum_(hand) != "BlackJack": hit_or_stand() play = raw_input(">") while play != "2": if play == "1": # Same as in the first loop deal(hand, deck_cards) if sum_(hand) > 21 and type(sum_(hand)) == int: # Thats a bust bust = 1 print "You busted with", hand, "sum: %s" % (sum_(hand)) break if type(sum_(hand))== tuple: # This requires a change in the value of sum as # you cannot concatinate a string and a tupple print "You hold:", hand, "sum: %s/%s" % (sum_(hand)[0], sum_(hand)[1]) else: print "You hold:", hand, "sum: %s" % (sum_(hand)) hit_or_stand() play = raw_input(">") else: hit_or_stand() play = raw_input(">") # Dealers turn: if not bust: deal(dhand, deck_cards) deal(dhand, deck_cards) print dhand sleep(1) while dealer(dhand): deal(dhand, deck_cards) print dhand sleep(1) if win_lose(dhand, hand) == 1: print "Player wins" money = money + (2 * bet) elif win_lose(dhand, hand) == 0: print "Dealer wins" # wave goodbye that bet! elif win_lose(dhand, hand) == 2: print "Push" # its a draw so you get you bet back money = money + bet else: print "You win - holding BlackJack" # BlackJack gives 3:2 # Remember to avoid integer division money = money + bet + float(3 * bet)/2 print "Dealer has:", sum_(dhand), "player has:", sum_(hand) sleep(2) print "" print "" if money < 0: print "You wake up in a dark, cold alley, beaten up and \n\ with broken thumbs, and realise that maybe next time you\n\ shouldn't bet money that you don't have...\n\n\t\t\tGAME OVER" sleep(10) break # place a new bet print "You still have %s$ to play with" % money bet = raw_input("Place your bet please:\n>") else: if 5 > bet: print "Minimum bet is 5$" elif 50 < bet: print "Maximum bet is 50$" else: # this shouldn't happen print "Oh my God what did you do???" # The bet is refused, so give the bet back # to the player. money = money + bet print "You still have %s$ to play with" % money bet = raw_input("Place your bet please:\n>") print "end"