[PyKDE] Suggestions for approach on GUI design for CLI program

[Frank Aune]

Hello,

Im currently working on a python CLI program, which output the result in XML. 
Im also going to design and write a GUI frontend in PyQt for this program, 
and in that respect Im wondering if someone has any good guidelines or clever 
approaches on how to do interact with CLI backend etc.

I dont know if this is enough information, so perhaps more directly what Im 
wondering about is how GUI frontends in general are written for CLI programs?

Regards,
Frank Aune