How i follow tree folders from url

[catalinfest at gmail.com]

Hello !

I wanna use python to follow the tree folders from one url.
Example :
If url is "www.site.com/first/ and "
"first" is first folder with next subfolders "01","02","03"
The result of script should be :

www.site.com/first/01/
www.site.com/first/02/
www.site.com/first/03/
Maybe urllib has some functions , but i don't know them.

Please help me !
Thank you !