Need a recursion lesson

[Terry Reedy]

In article <83pdbe$5fj$1 at news07.btx.dtag.de>, nickliz at t-online.de says...

>I have no clue what I'm doing. Does anyone have any pointers to about how to
>walk through something like this? Any help would be a lot.

As RRoy already noted, the wheel is already programmed.

To see how is works, look at the source code in the library path module
(may be macpath, posixpath, ntpath, depeding on system).

TJR