In this tutorial, you’ll learn how to create a Python dice roll simulator. The tutorial guides you through building a text-based user interface (TUI) application that simulates rolling dice using Python’s random module. You’ll learn to gather and validate user input, use random.randint() for dice rolling, and display results with ASCII art.
By the end of this tutorial, you’ll understand that:
- To simulate dice-rolling events, you can use
random.randint(). - To get the user’s input, you use the built-in
input()function. - To display dice in Python, you generate ASCII art representations of dice faces and use
print(). - To manipulate strings, you use methods such as
.center()and.join().
Building small projects, like a text-based user interface (TUI) dice-rolling application, will help you level up your Python programming skills. You’ll learn how to gather and validate the user’s input, import code from modules and packages, write functions, use for loops and conditionals, and neatly display output by using strings and the print() function.
Click the link below to download the entire code for this dice-rolling application and follow along while you build the project yourself:
Get Source Code: Click here to get the source code you’ll use to build your Python dice-rolling app.
Demo
In this step-by-step project, you’ll build an application that runs dice-rolling simulations. The app will be able to roll up to six dice, with each die having six faces. After every roll, the application will generate an ASCII diagram of dice faces and display it on the screen. The following video demonstrates how the app works:

When you run your dice-rolling simulator app, you get a prompt asking for the number of dice you want to roll. Once you provide a valid integer from 1 to 6, inclusive, then the application simulates the rolling event and displays a diagram of dice faces on the screen.
Project Overview
Your dice-rolling simulator app will have a minimal yet user-friendly text-based user interface (TUI), which will allow you to specify the number of six-sided dice that you’d like to roll. You’ll use this TUI to roll the dice at home without having to fly to Las Vegas.
Here’s a description of how the app will work internally:
| Tasks to Run | Tools to Use | Code to Write |
|---|---|---|
| Prompt the user to choose how many six-sided dice to roll, then read the user’s input | Python’s built-in input() function |
A call to input() with appropriate arguments |
| Parse and validate the user’s input | String methods, comparison operators, and conditional statements | A user-defined function called parse_input() |
| Run the dice-rolling simulation | Python’s random module, specifically the randint() function |