input: Write a python function to shuffle a list of items.
  assert set(shuffle_items(['a', 'b', 'c', 'd'])) == {'a', 'b', 'c', 'd'}
  assert set(shuffle_items([1, 2, 3, 4, 5])) == {1, 2, 3, 4, 5}
  assert set(shuffle_items(['apple', 'banana', 'cherry', 'date'])) == {'apple', 'banana', 'cherry', 'date'}
output: import random
  
  def shuffle_items(items):
      shuffled = items[:]
      random.shuffle(shuffled)
      return shuffled