sorted object in list

[ichabod801]

Your student example works for me. It gave me [('dave', 'B', 10), ('jane', 'B', 12), ('john', 'A', 15)]. Note that sorted creates a new list, it does not modify the original list. To sort the original list you would want the sort method of the list: student_objects.sort(key=lambda student: student.age).