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