input: from typing import List
  
  def is_palindrome(s: str) -> bool:
      """ Determine if a given string is a palindrome, i.e., reads the same backward as forward.
      >>> is_palindrome('racecar')
      True
      >>> is_palindrome('hello')
      False
      """
      return s == s[::-1]
output:     return s == s[::-1]