input: Write a function to shuffle a list of numbers. The function should return the shuffled list.
  
  import random
  
  def shuffle_list(nums):
   random.shuffle(nums)
   return nums
  
  assert shuffle_list([1, 2, 3, 4, 5])!= [1, 2, 3, 4, 5]
  assert shuffle_list([]) == []
  assert len(shuffle_list([1, 2, 3, 4, 5])) == 5
output: import random
  
  def shuffle_list(nums):
      random.shuffle(nums)
      return nums