input: Write a python function to sort a list of integers in ascending order.
  assert my_function([3, 1, 4, 1, 5, 9, 2, 6, 5]) == [1, 1, 2, 3, 4, 5, 5, 6, 9]
  assert my_function([10, 20, 5, 7, 3, 8, 2]) == [2, 3, 5, 7, 8, 10, 20]
  assert my_function([1, 2, 3, 4, 5]) == [1, 2, 3, 4, 5]
output: def my_function(lst):
      return sorted(lst)