[Tutor] recursivity and lists

[Danny Yoo]

>
> Problem is that python complains that he cannot know the type of the
result of this function (list). In C++ I would specify the type, but from
what I understood, Python should not need this. What did I miss ?

Can you copy the exact stack trace of the error?  It'll help: you've
interpreted what the error means, which is useful, but it's also important
to show the unvarnished output too.  It will let us look and make our own
interpretations.

Good luck!