input: def sort_words_by_length_and_alphabetical_order(my_string: str) -> str:
      """This function sorts the words in the given string by their length in decreasing order 
      and then alphabetically for words of same length.
      >>> sort_words_by_length_and_alphabetical_order("This is the string which is to be sorted")
      'string sorted which This is to be the'
      """
      words = my_string.split(' ')  # split string into list of words
      words_with_length = [(len(word), word) for word in words]  # create a list of tuples: (length, word)
      words_with_length.sort(reverse=True, key=lambda x: (x[0], x[1]))  # sort by length desc, then alphabetically
      sorted_string = " ".join([i[1] for i in words_with_length])  # join words with space
      return sorted_string  # return sorted string
output:     words = my_string.split(' ')  # split string into list of words
      words_with_length = [(len(word), word) for word in words]  # create a list of tuples: (length, word)
      words_with_length.sort(reverse=True, key=lambda x: (x[0], x[1]))  # sort by length desc, then alphabetically
      sorted_string = " ".join([i[1] for i in words_with_length])  # join words with space
      return sorted_string  # return sorted string