input: Write a python function to sort a list in descending order.
  assert sortList([5, 4, 3, 2, 1]) == [5, 4, 3, 2, 1]
  assert sortList([10, 3, 8, 2, 9]) == [10, 9, 8, 3, 2]
  assert sortList([0, -1, -2, 3, 1]) == [3, 1, 0, -1, -2]
output: def sortList(lst):
      return sorted(lst, reverse=True)