Is it bad practice to return a variable and not use it?

[ichabod801]

If the place the function is called from is saving the files you don't want saved, I would add a parameter to that place: save = True. Then have a conditional based on that parameter, and put the saving code in that conditional. That should not change the behavior of your code normally. However, when you loop to refresh the Table widget, you call that place with save = False, preventing duplication of the data.