input: def sort_words_by_length_and_alphabet(my_string: str) -> str:
      """Sort words in a given string by their length in decreasing order and by their alphabetical order in case of a tie.
      >>> sort_words_by_length_and_alphabet("This is the string which is to be sorted")
      'which string sorted This is to be the'
      """
      words = my_string.split(' ')
      words_with_length = [(len(word), word) for word in words]
      words_with_length.sort(key=lambda x: (-x[0], x[1]))
      sorted_string = " ".join([i[1] for i in words_with_length])
      return sorted_string
output:     words = my_string.split(' ')
      words_with_length = [(len(word), word) for word in words]
      words_with_length.sort(key=lambda x: (-x[0], x[1]))
      sorted_string = " ".join([i[1] for i in words_with_length])
      return sorted_string