data design

[Szabolcs Nagy]

> Hurray for yaml! A perfect fit for my need! And a swell tool!
> Thanks a lot!

i warn you against yaml
it looks nice, but the underlying format is imho too complex (just 
look at their spec.)

you said you don't want python source because that's too complex for 
the users.
i must say that yaml is not easier to use than python data structures.

if you want userfriedly config files then ConfigParser is the way to 
go.

if you want somthing really simple and fast then i'd recommend s-
expressions of lisp

also here is an identation based xml-like tree/hierarchical data 
structure syntax:
http://www.scottsweeney.com/projects/slip/