100 Days of Code: The Complete Python Pro Bootcamp for 2022 - Day 11 (BlackJack)
Published: 2022-04-30 10:16:08

#Blackjack - No Frills
```python
############### Blackjack Project #####################

#Difficulty Normal 😎: Use all Hints below to complete the project.
#Difficulty Hard 🤔: Use only Hints 1, 2, 3 to complete the project.
#Difficulty Extra Hard 😭: Only use Hints 1 & 2 to complete the project.
#Difficulty Expert 🤯: Only use Hint 1 to complete the project.

############### Our Blackjack House Rules #####################

#The deck is unlimited in size. 
#There are no jokers. 
#The Jack/Queen/King all count as 10.
#The 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.

##################### Hints #####################

#Hint 1: Go to this website and try out the Blackjack game: 
https://games.washingtonpost.com/games/blackjack/
#Then try out the completed Blackjack project here:
http://blackjack-final.appbrewery.repl.run

#Hint 2: Read this breakdown of program requirements: 
http://listmoz.com/view/6h34DJpvJBFVRlZfJvxF
then try to create your own flowchart for the program.

#Hint 3: Download and read this flow chart I've created: 
https://drive.google.com/uc?export=download&id=1rDkiHCrhaf9eX7u7yjM1qwSuyEk-rPnt

#Hint 4: Create a deal_card() function that uses the List below to *return* a random card. 11 is the Ace.

import random
from replit import clear
from art import logo
print(logo)
print("Welcome to the game of Blackjack")

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

#Hint 6: Create a function called calculate_score() that takes a List of cards as input and returns the score. Look up the sum() function to help you do this.
def calculate_score(cards):
  """Take a list of cards and return the score calculated from the cards"""

 #Hint 7: Inside calculate_score() 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 in our game.

  if sum(cards) == 21 and len(cards) == 2:
    return 0
 #Hint 8: Inside calculate_score() check for an 11 (ace). If the score is already over 21, remove the 11 and replace it with a 1. You might need to look up append() and remove().

  if 11 in cards and sum(cards) > 21:
    cards.remove(11)
    cards.append(1)
  return sum(cards)

#Hint 13: Create a function called compare() and pass in the user_score and computer_score. If the computer and user both have the same score, then it's a draw. If the computer has a blackjack (0), then the user loses. If the user has a blackjack (0), then the user wins. If the user_score is over 21, then the user loses. If the computer_score is over 21, then the computer loses. If none of the above, then the player with the highest score wins.
def compare(user_score, computer_score):
  #Bug fix. 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():

#Hint 5: Deal the user and computer 2 cards each using

deal_card()
  user_cards = []
  computer_cards = []
  is_game_over = False

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

 #Hint 11: The score will need to be rechecked with every new card drawn and the checks in Hint 9 need to be repeated until the game ends.

  while not is_game_over:
    #Hint 9: Call calculate_score(). If the computer or the user has a blackjack (0) or if the user's score is over 21, then the game ends.

    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: {computer_cards[0]}")

    if user_score == 0 or computer_score == 0 or user_score > 21:
      is_game_over = True
    else:
      #Hint 10: If the game has not ended, ask the user if they want to draw another card. If yes, then use the deal_card() function to add another card to the user_cards List. If no, then the game has ended.

      user_should_deal = input("Type 'y' to get another card, type 'n' to pass: ")
      if user_should_deal == "y":
        user_cards.append(deal_card())
      else:
        is_game_over = True

  #Hint 12: 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))

#Hint 14: 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(f"Do you want to play a game? Type 'y' or 'n': ") == "y":
  clear()
  play_game()
```