Building a Simple Slot Machine in Python

Eulene
3 min readJan 30, 2024

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Ever wondered how a slot machine works behind the scenes?

Today, we’ll take a closer look at a simple Python program that simulates a basic slot machine. The code is written in Python, uses randomization and user input to create a simple yet engaging game

Getting Started: Constants and Configuration

At the beginning of the code, I set up some constants like `MAX_LINES`, `MAX_BET`, and `MIN_BET`. These help to define the rules – how many lines you can bet on, and the minimum and maximum bet amounts.

We also decide how many rows and columns our virtual slot machine will have. I used cool symbols like ‘A’, ‘B’, ‘C’, and ‘D’, and we say how many of each will appear with `symbol_count`. Then, assigned values to these symbols with `symbol_value`.

Functions: Our Helpers in the Game

Functions are used to keep things organized. There’s a function to check if you won (`check_winnings`), one to spin the slot machine (`get_slot_machine_spin`), and another to display the slot machine grid (`print_slot_machine`).

Talking to the Player: User Interaction

To chat with the player, we have functions like `deposit`, `get_number_of_lines`, and `get_bet`. They ask for the initial deposit, the number of lines to bet on, and the bet amount per line.

Let’s Play: The Main Game Loop

The `spin` function runs one spin of the game. It asks for your bet, checks if you have enough money, spins the slot machine, calculates your winnings, and updates your balance.

The `main` function kicks things off. It sets your starting balance and keeps asking if you want to spin or quit.

Running the Show: Starting the Game

Once you’ve wrapped your head around the code, just call `main()` to start the game. Follow the prompts, make bets, spin the machine, and see your winnings and balance in action.

Wrapping Up

Dive in, have fun, and feel free to tweak the code to make your own unique slot machine experience!

GitHub link to source code: click here .

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