I have a simple piece of software written up that I'm running off the terminal's command line interface. Very recently, it was asked of me to create a GUI for it. So I basically made one to reflect how I would use the software but I actually haven't "connected" or "associated" the GUI with my software. There are plenty of examples on how to create this and that using Tkinter but I'm finding it very difficult to find information relating to actually getting an existing/working piece of software to mesh with the GUI.
Any ideas, tips or suggestions?