The `SimpleTreeview.py` only show how to implement a simple ttk.Treeview. (the [output image](https://github.com/r2123b/tkinter-ttk-Treeview-Simple-Demo/issues/1) is ...

Introduction:- Tkinter is the most commonly used library for developing GUI (Graphical User Interface) in Python. It is a standard Python interface to the Tk GUI toolkit shipped with Python. As Tk and ...