Cannot understand the detailedly the following code

[reachmsn at hotmail.com]

On Apr 11, 10:27 am, "Gabriel Genellina" <gagsl-... at yahoo.com.ar>
wrote:

>
> If you want to understand how recursion works, or how you can actually  
> construct a recursive function step by step, see this excellent post by  
> Neil Cerutti:
>
> http://groups.google.com/group/comp.lang.python/msg/9f0b10631fd47886
>

Hi,

I did read the above post by Cerutti but I'm still having trouble
writing this recursive function. I will be grateful if someone can
kindly guide me.

Regards,
Anshu