input: 
  
  def reverse_list(lst):
      """Reverses the given list.
      >>> reverse_list([1, 2, 3, 4, 5])
      [5, 4, 3, 2, 1]
      >>> reverse_list([10, 20, 30, 40])
      [40, 30, 20, 10]
      """
      return lst[::-1]
  
output:     return lst[::-1]