How to Add Random Numbers 1 to 20 to a List in Python

Submitted by razormist on Wednesday, January 7, 2026 - 23:08.

In this tutorial, we will learn how to program "How to Add Random Numbers 1 to 20 to a List in Python." The objective is to add random numbers from 1 to 20 to a list. This tutorial will guide you step by step through the process of generating and adding random numbers to a list. By the end of this tutorial, you will have a solid understanding of how to implement random numbers in a list, helping you strengthen your problem-solving abilities and improve your coding skills.

This topic is straightforward and easy to understand. Simply follow the instructions provided, and you will complete it with ease. The program will guide you step by step through the process of adding random numbers from 1 to 20 to a list. So, let's dive into the coding process!

Getting Started:

First you will have to download & install the Python IDLE's, here's the link for the Integrated Development And Learning Environment for Python https://www.python.org/downloads/.

Creating Main Function

This is the main function of the application. The following code will display a simple GUI in terminal console that will display program. To do this, simply copy and paste these blocks of code into the IDLE text editor.

import random
 
while True:
    print("\n============= Add Random Numbers 1 to 20 to a List =============\n")
 
    a = []
    n = int(input("Enter number of elements: "))
 
    for j in range(n):
        a.append(random.randint(1, 20))
 
    print("Randomized list is:", a)
 
    # Ask user if they want to try again
    opt = input("\nDo you want to try again? (yes/no): ").strip().lower()
    if opt == "no":
        print("Exiting program...")
        break
    elif opt != "yes":
        print("Invalid choice. Exiting program...")
        break

This program generates a list of random integers between 1 and 20. The user specifies how many elements the list should have, and the program fills it with random numbers in that range. After displaying the randomized list, the user can choose to generate a new list or exit the program.

Output:

There you have it we successfully created How to Add Random Numbers 1 to 20 to a List in Python. I hope that this simple tutorial help you to what you are looking for. For more updates and tutorials just kindly visit this site. Enjoy Coding!

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