Check If A String Is A Palindrome in Python

Function Definition:
is_palindrome is a recursive function that checks whether a given string s is a palindrome.
String Conversion:
s = s.lower() converts the input string to lowercase. This ensures case-insensitive comparison.
Base Case:
The base case checks if the length of the modified string s is 1 or less.
If true, it means the string is a palindrome (or an empty string), and the function returns True.
Recursive Case:
If the length of the string is greater than 1, it checks if the first and last characters of the string are equal (s[0] == s[-1]).
If true, it calls itself recursively with the substring excluding the first and last characters (is_palindrome(s[1:-1])).
Returning Results:
If any recursive call or the base case returns False, the function returns False.
If all recursive calls and the base case return True, the function returns True.
Example:
The code then applies the is_palindrome function to the string "radar".
The result is printed, indicating whether "radar" is a palindrome.
Output:
Running this code will output True, indicating that "radar" is indeed a palindrome.
This function efficiently checks for palindromes in a case-insensitive manner, making it suitable for various scenarios where case sensitivity is not required.

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