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