python 3

Write Python functions named is palindrome and palindrome length that each take a string named word as their only parameter is palindrome must behave as follows: . If the length of word is less than or equal to 1: return True If the length of word is greater than 1 and the first character of word is different to the last character of word: return False In all other cases: return the result of is palindromeO with the parameter of word with its first and last characters removed. palindrome length must behave as follows: . If word is a palindrome (determined using is palindrome): return the length of word In all other cases: return -1 For example, the following code should run without error: assert is_palindrome("") assert is_palindrome("a") assert is_palindrome("aa") assert is_palindrome("aba") assert is_palindrome("abba") assert not is_palindrome("ab") assert not is_palindrome("Aba") assert not is_palindrome( "abca") assert 0palindrome_length("") assert 1palindrome_length("a") assert 2palindrome_length("aa") assert 3palindrome_length( "aba") assert 4palindrome_length("abba") assert -palindrome_length("ab") assert -1palindrome_length("Aba") assert -1palindrome_length("abca")