input: Write a python function to filter words longer than 6 characters.
  assert filter_long_words(['programming', 'algorithm', 'python', 'coding'])==['programming', 'algorithm']
  assert filter_long_words(['short', 'tiny', 'minuscule', 'large', 'enormous'])==['minuscule', 'enormous']
  assert filter_long_words(['hello', 'world', 'universe'])==['universe']
output: def filter_long_words(words):
      return [word for word in words if len(word) > 6]