input: from typing import List
  import random
  
  def shuffle_list(lst: List[int]) -> List[int]:
      """Shuffle a given list and return the shuffled list.
      >>> shuffle_list([1, 2, 3, 4])
      [3, 1, 2, 4]
      >>> shuffle_list(['a', 'b', 'c'])
      ['c', 'a', 'b']
      """
      random.shuffle(lst)
      return lst
output:     shuffled_lst = lst[:]
      random.shuffle(shuffled_lst)
      return shuffled_lst