input: Write a function to sort the list items in descending order.
  assert descending_sort([3, 7, 5, 8, 10])==[10, 8, 7, 5, 3]
  assert descending_sort([1, 2, 3, 4, 5])==[5, 4, 3, 2, 1]
  assert descending_sort([])==[]
  assert descending_sort([-1, -2, -3, -4, -5])==[-1, -2, -3, -4, -5].sort(reverse=True)
  assert descending_sort([100, 99, 101, 98])==[101, 100, 99, 98]
output: def descending_sort(lst):
      return sorted(lst, reverse=True)