How can I get this code to output a sorted list instead of "none"

Codecademy problem#5 "Combine Sort"

def combine_sort(lst1, lst2):
  combined = lst1 + lst2
  return combined.sort()

print(combine_sort([1,3,2],[3,1,2]))

This code outputs

none

>Solution :

You could try this instead (once you realize the subtle difference between sorted(L) and L.sort()).

>>> def combined_sort(L1, L2):
    return sorted(L1 + L2)

>>> L1 = [1, 3, 2]
>>> L2 = [5, 9, 6]
>>> combined_sort(L1, L2)
[1, 2, 3, 5, 6, 9]
>>>