$ uname -a Linux raspberrypi 4.19.42-v7+ #1218 SMP Tue May 14 00:48:17 BST 2019 armv7l GNU/Linux ...
The SimpleTreeview.py only show how to implement a simple ttk.Treeview. (the output image is shown in Issues Tab) The ComplexTreeview.py exhibits an application that you can filter what you want to ...