input: Write a function to shuffle a list of numbers. Use the built-in shuffle function from the random module to achieve this. If the input list is empty, return an empty list.
  
  import random
  
  def shuffle_list(nums):
   if not nums:
    return []
   random.shuffle(nums)
   return nums
  
  assert shuffle_list([1, 2, 3, 4, 5]) != [1, 2, 3, 4, 5]
  assert shuffle_list([]) == []
output: def shuffle_list(nums):
   if not nums:
    return []
   random.shuffle(nums)
   return nums