input: def get_stats_for_string(string: str) -> tuple:
      """Given a string, calculate and return the maximum, minimum and mean of its characters.
      >>> get_stats_for_string("abcdef")
      ('f', 'a', 101.5)
      >>> get_stats_for_string("a")
      ('a', 'a', 97.0)
      """
      num_elements = len(string)
      max_element = max(string)
      min_element = min(string)
      mean_element = sum(ord(char) for char in string) / num_elements
      return (max_element, min_element, mean_element)
output:     num_elements = len(string)
      max_element = max(string)
      min_element = min(string)
      mean_element = sum(ord(char) for char in string) / num_elements
      return (max_element, min_element, mean_element)