python 3

Write a recursive function named is_palindrome that takes as its parameter a string. It should return True if that string is a palindrome, but return False otherwise. A palindrome is a string that reads the same forwards and backwards, like "hannah" or or "tacocat". For this function, don't ignore case or punctuation. For example, "Tacocat" or "taco, cat" would return False.

You may use default arguments and/or helper functions.