Blackjack

Blackjack, baby!

Today’s project was to build a simple version of the classic Blackjack card game in Python. And honestly? This was the most fun game I’ve coded so far. It combined everything I’ve learned about functions, loops, conditionals, and logic handling into one single program.

If you’ve never played Blackjack, I will walk you through it. Each player is dealt two cards and the goal is to get as close as possible to 21 without going over. Aces can be either 11 or 1 (depending on what benefits you more), and the face cards (J, Q, K) are worth 10. If you hit 21 with the first two cards, you’ve got yourself a Blackjack and basically win right away. But you know the house always wins so if the dealer has a Blackjack too, then you lose. Talk about having the worst luck.

Now that we have decided to gamble, lets build the game:

• Step 1: Dealing Cards

  I created a deal_card() function which randomly picks a card from a list (values 2–10, plus 10 again for J/Q/K, and 11 for Ace). Simple enough.

• Step 2: Calculating Scores

  This is where it got tricky. The calculate_score() function checks if the player has a natural Blackjack (21 with the first two cards), in which case you win unless the dealer also has a natural Blackjack and then you lose. It also handles the Ace logic. In Blackjack if your score is over 21 and you’ve got an Ace, the program smartly turns that Ace from 11 into 1. That little condition saved many losses during testing.

• Step 3: Comparing Results

  The compare() function determines who wins:

  • If both scores are equal → Draw.

  • If either hits Blackjack → they win.

  • If both hit Blackjack → Dealer wins.

  • If anyone crosses 21 → they lose.

  • Otherwise, whoever is closer to 21 takes the win.

    Writing this part almost felt like setting the rules for a tournament.

• Step 4: Playing the Game

  This was where all the pieces came together. I built a play_game() function to handle the main loop:

  • The user is asked whether they want another card or to pass.
  • The dealer (computer) automatically draws until they reach at least 17 (which is how real Blackjack works).
  • Finally, scores and results are displayed.

• Step 5: Infinite Rounds

  To make it feel like a real game, I wrapped it all in a while loop that keeps asking, if the user wants to continue playing. This way you can keep playing until you’ve either won big or rage-quit after losing to the dealer a few times.

What I loved about this project was how real it felt. You actually play against the computer, make choices, and get immediate feedback. Unlike Hangman or Caesar’s Cipher, this game had multiple decision points, so the logic had to be airtight. I had to debug a few times (especially when my Aces weren’t behaving), but once everything clicked, the program ran beautifully.

Today’s insight: complex programs are just a combination of many simple, small functions working together**.** When I tried to write this game in one go, I did not know where to start and what to do. But like I always say: Use a flowchart. So I quickly sketched a flowchart and then started defining functions which had to be reused. This way, each function had clear jobs defined and then I could use them as building blocks to finish the program.

Also, note to self: building games in Python is way more addictive than scrolling reels on Instagram. Zuckerberg 1 – Me 0 yesterday, but today? I think I won.

Until tomorrow!