At some point my application needs to do administrative tasks like creating a file in /etc or running commands with root priveleges. I know just could do a Q&D: os.popen("pkexec foo bar") But ...
There are two general ways to run applications graphically as root (or, more generally, as another user). Programs like gksu, gksudo, and kdesudo are graphical frontends for sudo. In contrast, pkexec ...