I made a Twnty one game, thanks to mr.Ibrahim Adel for teaching me how to do it go look at his course, it is realy good, i learned all of those things with him.

twenty_one.py

import random

def deal_card(cards):

    return random.choice(cards)

def adjust_for_ace(hand):

    if sum(hand) > 21 and 11 in hand:

        hand[hand.index(11)] = 1

def game():

    print("Welcome to the Twenty-One Game!")

    cards = [11, 2, 3, 4, 5, 6, 7, 8, 9, 10, 10, 10, 10]

    user_cards = [deal_card(cards), deal_card(cards)]

    computer_cards = [deal_card(cards), deal_card(cards)]

    game_over = False

    while not game_over:

        adjust_for_ace(user_cards)

        adjust_for_ace(computer_cards)

        print(f"Your cards: {' '.join(map(str, user_cards))} (Total: {sum(user_cards)})")

        print(f"Computer's first card: {computer_cards[0]}")

        if sum(user_cards) == 21:

            print("You won! It's a BLACKJACK!")

            return

        if sum(computer_cards) == 21:

            print("Computer won! It's a BLACKJACK!")

            return

        choice = input("Do you want to take another card? (y/n)\n--> ").lower()

        if choice == "y":

            user_cards.append(deal_card(cards))

            if sum(user_cards) > 21:

                adjust_for_ace(user_cards)

                if sum(user_cards) > 21:

                    print("You went over 21. You lose.")

                    return

        else:

            game_over = True

    while sum(computer_cards) < 17:

        computer_cards.append(deal_card(cards))

        adjust_for_ace(computer_cards)

    print(f"Your final hand: {user_cards} (Total: {sum(user_cards)})")

    print(f"Computer's final hand: {computer_cards} (Total: {sum(computer_cards)})")

    if sum(computer_cards) > 21:

        print("Computer went over 21. You win!")

    elif sum(user_cards) > sum(computer_cards):

        print("You win!")

    elif sum(user_cards) < sum(computer_cards):

        print("You lose.")

    else:

        print("It's a draw.")

game()

Woow what a project!
I leaned allot form it