[Tkinter] Trying to display a changing variable

[metulburr]

the way you are doing the StringVar is correct. I suspect it is due to your root.after() condition?

import tkinter as tk
import random

root = tk.Tk()
L = tk.Label(root, justify = 'left')
L.pack()
V = tk.StringVar()
L['textvariable'] = V
V.set('Test')

def set_lbl():
	V.set(str(random.randint(0,100)))
	
btn = tk.Button(root, text='change', command=set_lbl).pack()

root.mainloop()