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