Python Program to Check Palindrome Number

Posted in Python Tutorial

Updated on Jan 11, 2024

By Mari Selvan

👁️ 104 - Views

⏳ 4 mins

💬 1 Comment

Python Program to Check Palindrome Number

Photo Credit to CodeToFun

🙋 Introduction

In the realm of programming, tasks involving numbers often include checking for special properties. One interesting property is whether a number is a palindrome.

A palindrome number reads the same backward as forward.

In this tutorial, we will explore a Python program designed to check whether a given number is a palindrome.

The program involves reversing the digits of the number and comparing it with the original number.

📄 Example

Let's delve into the Python code that accomplishes this task.

is_palindrome.py

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# Function to check if a number is a palindrome
def is_palindrome(number):
    original_number = number
    reversed_number = 0

    # Reverse the digits of the number
    while number != 0:
        remainder = number % 10
        reversed_number = reversed_number * 10 + remainder
        number //= 10

    # If the reversed number is equal to the original number, it is a palindrome
    return original_number == reversed_number

# Driver program
if __name__ == "__main__":
    # Replace this value with the number you want to check
    number = 121

    # Call the function to check if the number is a palindrome
    if is_palindrome(number):
        print(f"{number} is a palindrome number.")
    else:
        print(f"{number} is not a palindrome number.")

💻 Testing the Program

To test the program with different numbers, modify the value of number in the code.

Output

121 is a palindrome number.

Run the script to check if the specified number is a palindrome.

🧠 How the Program Works

The program defines a function is_palindrome that takes a number as input and returns True if the number is a palindrome, and False otherwise.
Inside the if __name__ == "__main__": block, replace the value of number with the desired number you want to check.
The program calls the is_palindrome function and prints the result using print().

📏 Between the Given Range

Let's delve into the python code that checks for palindrome numbers in the range 100 to 200.

is_palindrome.py

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# Function to check if a number is palindrome
def is_palindrome(number):
    return str(number) == str(number)[::-1]

# Palindrome numbers in the range 100 to 200
palindrome_numbers = [num for num in range(100, 201) if is_palindrome(num)]

# Output the palindrome numbers
print("Palindrome Numbers in the Range 100 to 200:")
print(" ".join(map(str, palindrome_numbers)))

💻 Testing the Program

Output

Palindrome Numbers in the range 100 to 200:
101 111 121 131 141 151 161 171 181 191

Simply run the Python script to see the palindrome numbers in the range of 100 to 200.

🧠 How the Program Works

The program defines a function is_palindrome that checks if a given number is a palindrome by comparing it to its reversed version.
It then generates a list of palindrome numbers within the range of 100 to 200 using list comprehension.
The program outputs the palindrome numbers in the specified format.