def test_if_splits():
# Test if we can split each duplicate hand
for card in cards:
temp = Hand()
temp.add(Card(card))
temp.add(Card(card))
assert temp.can_be_split()
def test_hand_string_representation(self):
h = Hand()
h.add((2, Deck.CLUBS))
h.add((Deck.ACE, Deck.CLUBS))
self.assertEqual(f"A{Deck.CLUBS} 2{Deck.CLUBS}", str(h))
def test_values_return_possible_hand_values(self):
h = Hand()
h.add((10, Deck.CLUBS))
h.add((Deck.ACE, Deck.CLUBS))
values = h.values()
values.sort()
self.assertEqual(values, [11, 21])
def test_ace_calculation():
temp = Hand()
temp.add(Card("A"))
assert temp.has_ace()
assert temp.value() == 11
temp.add(Card("A"))
assert temp.value() == 12
temp = Hand()
temp.add(Card("9"))
temp.add(Card("A"))
assert temp.value() == 20
temp.add(Card("A"))
assert temp.value() == 21
temp.add(Card("A"))
assert temp.value() == 12
def test_for_soft_values():
temp = Hand()
temp.add(Card("4"))
temp.add(Card("A"))
assert temp.is_soft_value()
temp.add(Card("A"))
assert temp.is_soft_value()
temp.add(Card("4"))
assert temp.is_soft_value()
temp.add(Card("5"))
assert not temp.is_soft_value()
def test_best_value_returns_best_blackjack_hand_value(self):
h = Hand()
h.add((2, Deck.CLUBS))
self.assertEqual(2, h.best_value())
h.add((Deck.ACE, Deck.CLUBS))
self.assertEqual(13, h.best_value())
h.add((Deck.ACE, Deck.HEARTS))
self.assertEqual(14, h.best_value())
def test_splitting():
# Test splitting each hand into two separate ones
for card in cards:
temp = Hand()
temp.add(Card(card))
temp.add(Card(card))
first = Hand()
second = Hand()
first.add(temp.cards.pop())
second.add(temp.cards.pop())
assert first.value() == second.value()
# Make sure split hand is empty
assert len(temp.cards) == 0
def test_add_card(self):
h = Hand()
card = (10, Deck.CLUBS)
h.add(card)
self.assertEqual(h.cards, [card])
def test_blackjack():
temp = Hand()
temp.add(Card("A"))
temp.add(Card("K"))
assert temp.is_blackjack()
def play():
print("Welcome to blackjack!\n=====================")
try:
num_decks = int(input("Number of decks?: "), 10)
except ValueError:
print("You need to give me an integer value!")
return
try:
cash = int(input("Starting cash?: "), 10)
except ValueError:
print("You need to give me an integer value!")
return
deck = Deck(num_decks)
deck.shuffle(20)
times_won = 0
times_drawn = 0
times_lost = 0
print("Let's Play!")
while cash > 0 and len(deck.cards) > num_decks * 16:
print(f"Your cash: ${cash}")
try:
bet = int(input("Place your bet!: "), 10)
except ValueError:
print("You need to give me an integer value!")
break
player_hand = Hand()
dealer_hand = Hand()
player_hand.add(deck.draw())
dealer_hand.add(deck.draw())
player_hand.add(deck.draw())
player_bust = False
player_blackjack = False
player_split = False
while True:
print()
print(f"Dealer shows: {dealer_hand.list()}")
print(f"Your hand: {player_hand.list()}")
print(f"Your current value: {player_hand.value()}")
print()
if player_hand.is_blackjack():
player_blackjack = True
print("B L A C K J A C K !")
break
if player_hand.value() > 21:
player_bust = True
print("You bust!")
break
print("Options")
print("=======")
print("- (h)it")
print("- (s)tay")
if cash >= bet * 2 and player_hand.can_be_split():
print("- s(p)lit")
if cash >= bet * 2 and player_hand.can_double():
print(" - (d)ouble")
action = input("Pick an action: ")
if action == "h":
player_hand.add(deck.draw())
elif action == "p" and player_hand.can_be_split(
) and cash >= bet * 2:
second_hand = Hand()
second_hand.add(player_hand.pop())
player_split = True
first_bet = bet
second_bet = bet
break
elif action == "d" and player_hand.can_double(
) and cash >= bet * 2:
bet = bet * 2
player_hand.add(deck.draw())
if player_hand.value() > 21:
player_bust = True
break
elif action == "s":
break
if player_split:
first_bust = False
second_bust = False
# First hand
player_hand.add(deck.draw())
while True:
print("Playing first hand...\n")
print(f"Dealer shows: {dealer_hand.list()}")
print(f"Your hand: {player_hand.list()}")
print(f"Your current value: {player_hand.value()}")
if player_hand.value() > 21:
first_bust = True
print("Bust!")
break
print("Options")
print("=======")
print("- (h)it")
print("- (s)tay")
if cash >= (first_bet *
2) + second_bet and player_hand.can_double():
print(" - (d)ouble")
action = input("Pick an action: ")
if action == "h":
player_hand.add(deck.draw())
elif action == "d" and player_hand.can_double(
) and cash >= (first_bet * 2) + second_bet:
first_bet = first_bet * 2
player_hand.add(deck.draw())
if player_hand.value() > 21:
first_bust = True
break
elif action == "s":
break
# Second hand
second_hand.add(deck.draw())
while True:
print("Playing second hand...\n")
print(f"Dealer shows: {dealer_hand.list()}")
print(f"Your hand: {second_hand.list()}")
print(f"Your current value: {second_hand.value()}")
if second_hand.value() > 21:
second_bust = True
print("Bust!")
break
print("Options")
print("=======")
print("- (h)it")
print("- (s)tay")
if cash >= (second_bet *
2) + first_bet and second_hand.can_double():
print("- (d)ouble")
action = input("Pick an action: ")
if action == "h":
second_hand.add(deck.draw())
elif action == "d" and second_hand.can_double(
) and cash >= (second_bet * 2) + first_bet:
second_bet = second_bet * 2
second_hand.add(deck.draw())
if second_hand.value() > 21:
second_bust = True
break
elif action == "s":
break
if player_blackjack:
cash += bet
print("You win!")
times_won += 1
continue
if player_bust:
print("Dealer wins!")
cash -= bet
times_lost += 1
continue
dealer_bust = False
while True:
print(f"Dealer: {dealer_hand.list()} Value: {dealer_hand.value()}")
if dealer_hand.value() < 17:
print("Dealer hits!")
dealer_hand.add(deck.draw())
elif dealer_hand.value() > 21:
print("Dealer busts!")
dealer_bust = True
break
elif dealer_hand.value() == 17 and dealer_hand.has_ace():
print("Dealer hits!")
dealer_hand.add(deck.draw())
else:
break
if player_split:
print()
print(
f"Dealer hand: {dealer_hand.list()}, Value: {dealer_hand.value()}"
)
print(f"Your first hand: {player_hand.list()}")
print(f"Your second hand: {second_hand.list()}")
if first_bust:
print("First hand busted...")
cash -= first_bet
times_lost += 1
elif dealer_bust or player_hand.value() > dealer_hand.value():
print("First hand wins!")
cash += first_bet
times_won += 1
elif player_hand.value() < dealer_hand.value():
print("First hand loses...")
cash -= first_bet
times_lost += 1
else:
print("First hand PUSH!")
times_drawn += 1
if second_bust:
print("Second hand busted...")
cash -= second_bet
times_lost += 1
elif dealer_bust or second_hand.value() > second_hand.value():
print("Second hand wins!")
cash += second_bet
times_won += 1
elif second_hand.value() < dealer_hand.value():
print("Second hand loses...")
cash -= second_bet
times_lost += 1
else:
print("Second hand PUSH!")
times_drawn += 1
else:
print()
print("Result:")
print(
f"Dealer hand: {dealer_hand.list()}, Value: {dealer_hand.value()}"
)
print(
f"Your hand: {player_hand.list()}, Value: {player_hand.value()}"
)
if dealer_bust or player_hand.value() > dealer_hand.value():
print(f"You win ${bet}!")
times_won += 1
cash += bet
elif player_hand.value() < dealer_hand.value():
print("You lose!")
times_lost += 1
cash -= bet
else:
print("PUSH!")
times_drawn += 1
print("Thanks for playing!")
print(f"You won {times_won} hands.")
print(f"You lost {times_lost} hands.")
print(f"You pushed {times_drawn} hands.")