input: from typing import List
  import random
  
  def shuffle_list(list: List[int]) -> List[int]:
      """ Shuffle a given list and return the shuffled list.
      >>> shuffle_list([1, 2, 3, 4, 5])
      [3, 1, 5, 4, 2]
      >>> shuffle_list([10, 20, 30, 40, 50])
      [50, 20, 40, 10, 30]
      """
output:     random.shuffle(list)
      return list