How to check if a number is a palindrome in Python

How to check if a number is a palindrome in Python.

Here's a step-by-step tutorial on how to check if a number is a palindrome in Python:

Step 1: Start by defining a function named is_palindrome that takes a single parameter num, which represents the number we want to check.

Step 2: Convert the number to a string using the str() function. This will allow us to easily access individual digits.

Step 3: Check if the string representation of the number is equal to its reverse. If they are equal, then the number is a palindrome. You can use string slicing with a step of -1 to reverse the string.

Here's the code for the is_palindrome function:

def is_palindrome(num):
    num_str = str(num)
    reversed_str = num_str[::-1]
    if num_str == reversed_str:
        return True
    else:
        return False

Now, you can call the is_palindrome function and pass in the number you want to check. It will return True if the number is a palindrome and False otherwise.

Here are a few examples of how you can use the is_palindrome function:

print(is_palindrome(12321))   # Output: True
print(is_palindrome(12345))   # Output: False
print(is_palindrome(1221))    # Output: True
print(is_palindrome(987789))  # Output: True

In the first example, the number 12321 is a palindrome, so the function returns True. In the second example, the number 12345 is not a palindrome, so the function returns False. The third and fourth examples are also palindromes, so the function returns True for both.

That's it! You now have a working function to check if a number is a palindrome in Python.