input: Write a function to sort a list in ascending order.
  assert sort_list([5, 2, 7, 3, 1]) == [1, 2, 3, 5, 7]
  assert sort_list([10, 5, 3, 8, 2]) == [2, 3, 5, 8, 10]
  assert sort_list([4, 9, 1, 6, 7]) == [1, 4, 6, 7, 9]
output: def sort_list(lst):
      return sorted(lst)