Hierarchical treeview in Python GUI application (original) (raw)

`# Python program to illustrate the usage

of hierarchical treeview in python GUI

application using tkinter

Importing tkinter

from tkinter import *

Importing ttk from tkinter

from tkinter import ttk

Creating app window

app = Tk()

Defining title of the app

app.title("GUI Application of Python")

Defining label of the app and calling a geometry

management method i.e, pack in order to organize

widgets in form of blocks before locating them

in the parent widget

ttk.Label(app, text ="Treeview(hierarchical)").pack()

Creating treeview window

treeview = ttk.Treeview(app)

Calling pack method on the treeview

treeview.pack()

Inserting items to the treeview

Inserting parent

treeview.insert('', '0', 'item1', text ='GeeksforGeeks')

Inserting child

treeview.insert('', '1', 'item2', text ='Computer Science') treeview.insert('', '2', 'item3', text ='GATE papers') treeview.insert('', 'end', 'item4', text ='Programming Languages')

Inserting more than one attribute of an item

treeview.insert('item2', 'end', 'Algorithm', text ='Algorithm')
treeview.insert('item2', 'end', 'Data structure', text ='Data structure') treeview.insert('item3', 'end', '2018 paper', text ='2018 paper')
treeview.insert('item3', 'end', '2019 paper', text ='2019 paper') treeview.insert('item4', 'end', 'Python', text ='Python') treeview.insert('item4', 'end', 'Java', text ='Java')

Placing each child items in parent widget

treeview.move('item2', 'item1', 'end')
treeview.move('item3', 'item1', 'end') treeview.move('item4', 'item1', 'end')

Calling main()

app.mainloop()

`