input: Write a python function to shuffle a list randomly.
  assert shuffle_list([5, 2, 7, 1, 8]) != [5, 2, 7, 1, 8]
  assert shuffle_list([1, 2, 3, 4, 5]) != [1, 2, 3, 4, 5]
  assert shuffle_list([10, 20, 30, 40, 50]) != [10, 20, 30, 40, 50]
output: import random
  
  def shuffle_list(lst):
      random.shuffle(lst)
      return lst