Palindrome Checker (Code) in Python

Palindrome Checker in Python

About the project: Create a Palindrome Checker project in Python. This will be a self-contained script that checks if a word, phrase, or number reads the same forwards and backward.

This program will ask you to enter a string or a number. It will then tell you if it is a palindrome. The script will run in a continuous loop, so you can check multiple inputs without restarting the program.

How to use this Palindrome Checker:

Run the Python script.
This script is ready to use. When you run it, you can enter a word, phrase, or number. The program will tell you if it's a palindrome and will continue to run until you type q to quit.

Project Level: Beginner

You can directly copy the below snippet code with the help of green copy button, paste it and run it in any Python editor you have.

Steps: Follow these steps

Step 1: Copy below code using green 'copy' button.

Step 2: Paste the code on your chosen editor.

Step 3: Save the code with filename and .py extention.

Step 4: Run (Press F5 if using python IDLE)



# palindrome_checker.py

def is_palindrome(text):
    """
    Checks if a given string is a palindrome.
    
    This function first cleans the text by removing non-alphanumeric
    characters and converting it to lowercase to ensure a proper check.

    Args:
        text (str): The string to check.

    Returns:
        bool: True if the string is a palindrome, False otherwise.
    """
    # Clean the text: remove spaces and punctuation, and convert to lowercase
    # This makes the checker more robust for phrases like "A man, a plan, a canal: Panama"
    cleaned_text = ''.join(char for char in text if char.isalnum()).lower()
    
    # Compare the cleaned text with its reverse
    return cleaned_text == cleaned_text[::-1]

def main():
    """
    Main function to run the Palindrome Checker in a continuous loop.
    """
    print("--- Python Palindrome Checker ---")
    print("Enter a word, phrase, or number to check if it's a palindrome (or 'q' to quit).")

    while True:
        user_input = input("\nEnter your text: ").strip()

        # Check if the user wants to quit
        if user_input.lower() == 'q':
            print("Exiting Palindrome Checker. Goodbye!")
            break
        
        # Check for empty input
        if not user_input:
            print("Please enter some text to check.")
            continue

        if is_palindrome(user_input):
            print(f"Result: '{user_input}' is a palindrome.")
        else:
            print(f"Result: '{user_input}' is not a palindrome.")

# This ensures that main() is called only when the script is executed directly.
if __name__ == "__main__":
    main()