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Palindrome Checker (Python)

A simple interactive Python program that checks whether a word is a palindrome or finds palindromic words within a sentence. The program runs in the terminal and allows repeated checks without restarting.

📌 Features

  • Check if a single word is a palindrome
  • Scan a sentence and detect all palindromic words
  • Case-insensitive comparisons
  • Ignores punctuation in sentence checks
  • User-friendly input validation using pyinputplus
  • Option to rerun the program indefinitely until the user exits

🧠 What Is a Palindrome?

A palindrome is a word that reads the same forwards and backwards.

Examples:

  • racecar
  • level
  • madam

🛠 Requirements

  • Python 3.x
  • pyinputplus module

Install the required dependency with:

pip install pyinputplus

▶️ How to Run

  1. Save the script as palindrome_checker.py
  2. Open a terminal in the same directory
  3. Run:

python palindrome_checker.py

🧪 How It Works

Word Check

  • Prompts the user to enter a word
  • Converts it to lowercase
  • Reverses the word using slicing
  • Compares the original and reversed word

Sentence Check

  • Prompts the user to enter a sentence
  • Converts it to lowercase
  • Removes punctuation
  • Splits the sentence into words
  • Identifies and lists palindromic words

🔁 Program Flow

  1. User selects:
    • [1] Check a word
    • [2] Check a sentence
  2. Program performs the selected check
  3. User is asked whether they want to run another check
  4. Program continues until the user chooses to exit

📂 Example Output

Check a [1] Word or [2] Sentence? 1

What word would you like to check? racecar

The word "racecar" is a palindrome!

📄 License

This project is open-source and free to use for learning or personal projects.