windows help files ?

["Martin v. Löwis"]

> 1. how can I launch the windows help file (CHM), from python  with a
> keyword as argument ?

Run hh.exe. If you want it to navigate to specific page, also pass that
page on the command line (finding out the exact syntax is left as an
exercise)

> 2. now when my program should also run under Linux/Mac,  how should I
> call the help file  under Linux/Mac.

Provide an HTML tree of the documentation, and use the webbrowser module
to start a browser on it.

Regards,
Martin