input: Write a python function to reverse words in a sentence that are longer than 5 characters.
  assert reverse_words('This is an example sentence.') == 'This is an elpmaxe .ecnetnes '
  assert reverse_words('Hello world from the other side') == 'olleH world from the rehto edis '
  assert reverse_words('Python programming is fun') == 'nohtyP gnimmargorp is fun '
output: def reverse_words(sentence):
      return ' '.join([word[::-1] if len(word) > 5 else word for word in sentence.split()])