How to Remove Duplicate Word from a String in Python

Submitted by razormist on Thursday, October 10, 2024 - 23:43.

In this tutorial, we will learn how to program "How to Remove Duplicate Words from a String in Python." We will focus on identifying and removing any duplicate words from a string. The objective is to safely and accurately detect duplicate words within the string and remove them. A sample program will be provided to demonstrate the coding process.

This topic is very easy to understand. Just follow the instructions I provide, and you'll be able to do it yourself with ease. The program I’ll show you demonstrates the proper way to remove duplicate words from a string. I’ll also provide a simple and efficient method to achieve this. So, let's start coding!

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 re
 
def removeDupe(input):
 
    regex = r'\b(\w+)(?:\W+\1\b)+'
 
    return re.sub(regex, r'\1', input, flags=re.IGNORECASE)
 
 
ret = False
 
while True:
    print("\n================= Remove Duplicate Word from a String =================\n\n")
    
    my_str = "Lets enjoy the code code"
 
    print("Original String: ", my_str)
 
    print("\nRemoving Duplicate word: ", removeDupe(my_str))
 
    
    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 Python script removes duplicate words from a given string using regular expressions. The removeDupe() function defines a regex pattern that matches consecutive duplicate words, ignoring case, and replaces them with just one instance of the word. The program demonstrates this with a predefined string "Lets enjoy the code code", prints both the original and the modified string, and then prompts the user to try again or exit. It continues in a loop until the user decides to stop.

Output:

There you have it we successfully created How to Remove Duplicate Word from a String 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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