input: Write a function to reverse a list. The function should take a list as input and return the reversed list.
  
  def reverse_list(list): 
      return list[::-1]
  
  assert reverse_list([1,2,3,4,5]) == [5,4,3,2,1]
  assert reverse_list(['a','b','c']) == ['c','b','a']
  assert reverse_list([]) == []
  assert reverse_list([1]) == [1]
  assert reverse_list([1,2]) == [2,1]
output: def reverse_list(list): 
      return list[::-1]