How to Extract Unique Values from a Dictionary in Python

Submitted by razormist on Monday, February 24, 2025 - 23:28.

In this tutorial, we’ll learn how to program “How to Extract Unique Values from a Dictionary in Python.” The objective is to safely extract only unique values from a dictionary. This tutorial will guide you through the process step by step to identify and extract all unique values. So, let’s get started!

This topic is straightforward to understand. Just follow the instructions I provide, and you’ll complete it with ease. The program I’ll demonstrate will illustrate the proper way to find and extract unique values from a dictionary. 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.

my_dict = {'set1' : [1, 2, 3, 8],
                        'set2' : [10, 13, 5],
                        'set3' : [6, 12, 8],
                        'set4' : [4, 2, 7]}
 
 
while True:
        print("\n================= Extract Unique Values from a Dictionary =================\n\n")
 
 
        print("Current List : " + str(my_dict))
 
        x=list(my_dict.values())
        y=[]
        res=[]
        for i in x:
                y.extend(i)
        for i in y:
                if i not in res:
                        res.append(i)
        res.sort()
 
 
        print("The unique values : " + str(res))
 
        opt = input("\nDo you want to try again?(yes/no): ")
 
        if opt.lower() == 'yes':
                ret=False
        elif opt.lower() == 'no':
                ret=True
                print("Exiting program....")
        else:
                print("Please enter yes/no:")
                break
 
        if ret == False:
                continue

This program extracts unique values from a dictionary where the values are lists of numbers. It first gathers all the values, flattens them into a single list, removes duplicates, sorts the result, and displays the unique numbers. The loop allows users to run the program multiple times until they choose to exit.

Output:

There you have it we successfully created How to Extract Unique Values from a Dictionary 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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