input: Write a python function to classify words based on their length. If a word's length is less than or equal to 7, it goes into the short_dict; otherwise, it goes into the long_dict.
  assert classify_words("Luxury, Ant, Dormitory, Pro") == ({'Luxury': 6, 'Ant': 3, 'Pro': 3}, {'Dormitory': 9})
  assert classify_words("Hello, World, Python, Programming") == ({'Hello': 5, 'World': 5, 'Python': 6}, {'Programming': 11})
  assert classify_words("Sky, Blue, Ocean, Elephant") == ({'Sky': 3, 'Blue': 4, 'Ocean': 5}, {'Elephant': 8})
output: def classify_words(words):
      short_dict = {}
      long_dict = {}
      for word in words.split(", "):
          if len(word) <= 7:
              short_dict[word] = len(word)
          else:
              long_dict[word] = len(word)
      return short_dict, long_dict