How to Check if a String Is a Palindrome Using Stack in Python

Submitted by razormist on Thursday, February 19, 2026 - 22:15.

In this tutorial, we will learn how to program “How to Check if a String Is a Palindrome Using a Stack in Python.” The main objective is to determine whether a given string is a palindrome by utilizing stack operations. This tutorial will guide you step by step through the logic behind pushing and popping characters from a stack to verify the palindrome condition. By the end of this tutorial, you will have a clear understanding of how to implement a stack-based solution for palindrome checking in Python, helping you strengthen your problem-solving abilities and improve your overall coding skills.

This topic is straightforward and easy to understand. By simply following the instructions provided, you will be able to complete it with ease. The program will guide you step by step through the process of checking whether a string is a palindrome using a stack. So, let’s dive into the coding process and start implementing the solution!

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.

class Stack:
    def __init__(self):
        self.items = []
 
    def is_empty(self):
        return self.items == []
 
    def push(self, data):
        self.items.append(data)
 
    def pop(self):
        return self.items.pop()
 
 
# MAIN LOOP
while True:
    print("\n=============== Check if a String Is a Palindrome Using Stack ===============\n")
 
    s = Stack()
    text = input('Please enter the string: ')
 
    for character in text:
        s.push(character)
 
    reversed_text = ''
    while not s.is_empty():
        reversed_text += s.pop()
 
    if text == reversed_text:
        print('The string is a palindrome.')
    else:
        print('The string is not a palindrome.')
 
    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 checks whether a given string is a palindrome by using a stack data structure. It defines a simple `Stack` class with basic operations such as push, pop, and checking if the stack is empty. The user inputs a string, and each character of the string is pushed onto the stack. Since a stack follows the Last-In-First-Out (LIFO) principle, popping all characters from the stack produces the reversed version of the original string. The program then compares the original string with the reversed string to determine whether it reads the same forwards and backwards. The process runs inside a loop, allowing the user to test multiple strings until they choose to exit the program.

Output:

There you have it we successfully created How to Check if a String Is a Palindrome Using Stack 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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