21点纸牌游戏

21点又名BlackJack，由2到5个人玩，使用4副扑克除大小王之外的208张牌，游戏者的目标是使手中的牌的点数之和不超过21点且尽量大。

art.py

logo = r"""
.------.            _     _            _    _            _
|A_  _ |.          | |   | |          | |  (_)          | |
|( / ).-----.     | |__ | | __ _  ___| | ___  __ _  ___| | __
|   /|K /  |     | '_ | |/ _` |/ __| |/ / |/ _` |/ __| |/ /
|  / | /   |     | |_) | | (_| | (__|   <| | (_| | (__|   <
`-----|   / |     |_.__/|_|__,_|___|_|_ |__,_|___|_|_\
      |  / K|                            _/ |
      `------'                           |__/
"""

main.py

############### Blackjack House Rules #####################
# The deck is unlimited in size.
# There are no jokers.
# The Jack/Queen/King all count as 10.
# The Ace can count as 11 or 1.
# Use the following list as the deck of cards:
# cards = [11, 2, 3, 4, 5, 6, 7, 8, 9, 10, 10, 10, 10]
# The cards in the list have equal probability of being drawn.
# Cards are not removed from the deck as they are drawn.
import random
import os
from art import logo
def deal_card():
"""Returns a random card from the deck."""
cards = [11, 2, 3, 4, 5, 6, 7, 8, 9, 10, 10, 10, 10]
card = random.choice(cards)
return card
def calculate_score(cards):
"""Take a list of cards and return the score calculated from the cards"""
# Check for a blackjack (a hand with only 2 cards: ace + 10) and return 0 instead of the actual score. 0 will represent a blackjack.
if sum(cards) == 21 and len(cards) == 2:
return 0
# If the score is already over 21, remove the 11 and replace it with a 1.
if 11 in cards and sum(cards) > 21:
cards.remove(11)
cards.append(1)
return sum(cards)
def compare(user_score, computer_score):
# If you and the computer are both over, you lose.
if user_score > 21 and computer_score > 21:
return "You went over. You lose ?"
if user_score == computer_score:
    return "Draw ?"
elif computer_score == 0:
    return "Lose, opponent has Blackjack ?"
elif user_score == 0:
    return "Win with a Blackjack ?"
elif user_score > 21:
    return "You went over. You lose ?"
elif computer_score > 21:
    return "Opponent went over. You win ?"
elif user_score > computer_score:
    return "You win ?"
else:
    return "You lose ?"

def play_game():
print(logo)

user_cards = []
computer_cards = []
is_game_over = False

for _ in range(2):
    user_cards.append(deal_card())
    computer_cards.append(deal_card())

while not is_game_over:
    user_score = calculate_score(user_cards)
    computer_score = calculate_score(computer_cards)
    print(f"   Your cards: {user_cards}, current score: {user_score}")
    print(f"   Computer's first card: ")

    if user_score == 0 or computer_score == 0 or user_score > 21:
        is_game_over = True
    else:
        # If the game has not ended, ask the user if they want to draw another card.
        user_should_deal = input("Type 'y' to get another card, type 'n' to pass: ").lower()
        if user_should_deal == "y":
            user_cards.append(deal_card())
        else:
            is_game_over = True

# Once the user is done, it's time to let the computer play. The computer should keep drawing cards as long as it has a score less than 17.
while computer_score != 0 and computer_score < 17:
    computer_cards.append(deal_card())
    computer_score = calculate_score(computer_cards)

print(f"   Your final hand: {user_cards}, final score: {user_score}")
print(f"   Computer's final hand: {computer_cards}, final score: {computer_score}")
print(compare(user_score, computer_score))

Ask the user if they want to restart the game. If they answer yes, clear the console and start a new game of blackjack and show the logo from art.py.
while input("Do you want to play a game of Blackjack? Type 'y' or 'n': ").lower() == "y":
os.system("cls")
play_game()