input: Write a python function to sort a list of integers in ascending order.
  assert sort_list([3, 1, 6, 9, 10, 5])==[1, 3, 5, 6, 9, 10]
  assert sort_list([10, 5, 3, 1, 4, 2])==[1, 2, 3, 4, 5, 10]
  assert sort_list([20, 10, 30, 5, 15])==[5, 10, 15, 20, 30]
output: def sort_list(lst):
      return sorted(lst)