input: Write a python function to get the longest words from a list of words.
  assert get_longest_words(["one", "two", "three", "four", "five", "six"]) == ["three"]
  assert get_longest_words(["cat", "bat", "ant", "elephant", "dog", "hawk"]) == ["elephant"]
  assert get_longest_words(["a", "aa", "aaa", "aaaa", "bb", "bbbb"]) == ["aaaa", "bbbb"]
output: def get_longest_words(words):
      max_length = max(len(word) for word in words)
      return [word for word in words if len(word) == max_length]