input: 
  def reverse_list(list):
      """Reverses the given list.
      
      >>> reverse_list([1, 2, 3, 4, 5])
      [5, 4, 3, 2, 1]
      >>> reverse_list([7, 3, 9, 2])
      [2, 9, 3, 7]
      """
      return list[::-1]
  
output:     return list[::-1]