input: Write a function to shuffle a list of numbers using Python's random module. Return the shuffled list. If the input list is empty, return an empty list.
  def shuffle_list(nums):
   if len(nums) == 0:
   return nums
   random.shuffle(nums)
   return nums
  
  import random
  assert shuffle_list([1, 2, 3, 4, 5]) != [1, 2, 3, 4, 5]
  assert shuffle_list([]) == []
output: import random
  
  def shuffle_list(nums):
      if len(nums) == 0:
          return nums
      random.shuffle(nums)
      return nums