Why isn't .ico file defined when setting window's icon?

Question

When I tried to change the window icon in the top left corner from the ugly red \"TK\" to my own favicon using the code below, Python threw an error:

from tk         


        

Answer 1

from tkinter import *
from PIL import ImageTk, Image

Tk.call('wm', 'iconphoto', Tk._w, ImageTk.PhotoImage(Image.open('./resources/favicon.ico')))

The above worked for me.