Function that returns true if s is palindrome
def isPalindrome ( s ) : NEW_LINE INDENT i = 0 ; NEW_LINE j = len ( s ) - 1 ; NEW_LINE while ( i < j ) : NEW_LINE INDENT if ( s [ i ] is not s [ j ] ) : NEW_LINE INDENT return False ; NEW_LINE DEDENT i += 1 ; NEW_LINE j -= 1 ; NEW_LINE DEDENT return True ; NEW_LINE DEDENT