input: 
  from typing import List
  
  def sort_words_by_length(sentence: str) -> str:
      """ Sort words in a given string by their length in decreasing order while preserving alphabetical order for words of the same length.
      >>> sort_words_by_length("This is the string which is to be sorted")
      'which string sorted is be the to is This'
      >>> sort_words_by_length("Python programs are fun")
      'programs Python fun are'
      """
      words = sentence.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 = sentence.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