input: Write a function to sort words by their length in descending order.
  assert sort_words_by_length("This is a test sentence") == ['sentence', 'This', 'test', 'is', 'a']
  assert sort_words_by_length("Sorting words by length is fun") == ['Sorting', 'length', 'words', 'fun', 'by', 'is']
  assert sort_words_by_length("Python coding challenges are great") == ['challenges', 'Python', 'coding', 'great', 'are']
output: def sort_words_by_length(sentence):
      words = sentence.split()
      sorted_words = sorted(words, key=len, reverse=True)
      return sorted_words