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from tkinter import *
import tkinter as tk
from tkinter import ttk
from tkinter.messagebox import showinfo
root = tk.Tk()
root.title('Treeview demo')
root.geometry('620x200')
# define columns
columns = ('first_name', 'last_name', 'email')
tree = ttk.Treeview(root, columns=columns, show='headings')
# define headings
tree.heading('first_name', text='First Name')
tree.heading('last_name', text='Last Name')
tree.heading('email', text='Email')
# generate sample data
contacts = []
for n in range(1, 100):
contacts.append((f'first {n}', f'last {n}', f'email{n}@example.com'))
# add data to the treeview
for contact in contacts:
tree.insert('', tk.END, values=contact)
def item_selected(event):
for selected_item in tree.selection():
item = tree.item(selected_item)
record = item['values']
# show a message
showinfo(title='Information', message=','.join(record))
tree.bind('<<TreeviewSelect>>', item_selected)
tree.grid(row=0, column=0, sticky='nsew')
# add a scrollbar
scrollbar = ttk.Scrollbar(root, orient=tk.VERTICAL, command=tree.yview)
tree.configure(yscroll=scrollbar.set)
scrollbar.grid(row=0, column=1, sticky='ns')
# run the app
root.mainloop()
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