How to show data in simple gui like Tkinter

[maharzan]

I am new to Pi and Python so have been trying to set this up in my 16s JBD. I have successfully run the first command after some tries and its showing the cell details partially in the command prompt (if that is what is called). But I want to set this up in a gui and simplest one seems to be Tkinter. I have a 4 in LCD so want to show only things I need so I can set this up in my car. I am not sure where to put the Tkinter code or how I can make a separate file so it pulls data every second and shows it on the screen. I tried to add to functions like cellinfo1(data) but it seems it pops up window every second. I also tried to add window code outside of function and only change text in the cellinfo function but that doesn't seem to work. Any clue would be very helpful. I didn't know where to ask so put it up here.. hoping for a reply. Thanks.

Just to add, I don't need to save the data in the db.. I just want to check the data realtime.