Play black jack against the computer
Python, 99 lines
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Copy to clipboard1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 | # a very simple blackjack game
# in the game the cards have the following values ...
# ace 11 or 1
# J, Q, K are 10
# the rest of the cards 2 - 10 are face value
# you start with two cards and add them up
# if you have 21, then you have the best score, a blackjack
# if you have between 18 and 21, you should stand (no more cards)
# if you have less then 18, you can hit (one more card at a time)
# once you stand the computer plays
# the better score not exceeding 21 wins
# equal scores is a draw (no winner)
# any score over 21 is a bust (busted player loses, both bust --> no winner)
# casino blackjack games have additional options and rules
from random import choice as rc
def total(hand):
# how many aces in the hand
aces = hand.count(11)
# to complicate things a little the ace can be 11 or 1
# this little while loop figures it out for you
t = sum(hand)
# you have gone over 21 but there is an ace
if t > 21 and aces > 0:
while aces > 0 and t > 21:
# this will switch the ace from 11 to 1
t -= 10
aces -= 1
return t
# a suit of cards in blackjack assume the following values
cards = [2, 3, 4, 5, 6, 7, 8, 9, 10, 10, 10, 10, 11]
# there are 4 suits per deck and usually several decks
# this way you can assume the cards list to be an unlimited pool
cwin = 0 # computer win counter
pwin = 0 # player win counter
while True:
player = []
# draw 2 cards for the player to start
player.append(rc(cards))
player.append(rc(cards))
pbust = False # player busted flag
cbust = False # computer busted flag
while True:
# loop for the player's play ...
tp = total(player)
print "The player has these cards %s with a total value of %d" % (player, tp)
if tp > 21:
print "--> The player is busted!"
pbust = True
break
elif tp == 21:
print "\a BLACKJACK!!!"
break
else:
hs = raw_input("Hit or Stand/Done (h or s): ").lower()
if 'h' in hs:
player.append(rc(cards))
else:
break
while True:
# loop for the computer's play ...
comp = []
comp.append(rc(cards))
comp.append(rc(cards))
# dealer generally stands around 17 or 18
while True:
tc = total(comp)
if tc < 18:
comp.append(rc(cards))
else:
break
print "the computer has %s for a total of %d" % (comp, tc)
# now figure out who won ...
if tc > 21:
print "--> The computer is busted!"
cbust = True
if pbust == False:
print "The player wins!"
pwin += 1
elif tc > tp:
print "The computer wins!"
cwin += 1
elif tc == tp:
print "It's a draw!"
elif tp > tc:
if pbust == False:
print "The player wins!"
pwin += 1
elif cbust == False:
print "The computer wins!"
cwin += 1
break
print
print "Wins, player = %d computer = %d" % (pwin, cwin)
exit = raw_input("Press Enter (q to quit): ").lower()
if 'q' in exit:
break
print
print
print "Thanks for playing blackjack with the computer!"
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