Setzen Sie den Symboltitel TKinter

# my problme was that, i didnt know that the image format must be .ico
# you can convert your images in https://convertico.com/ and then:

from tkinter import *

root = Tk()
root.title('this is program title')
# icon
root.iconbitmap('image_name.ico')

root.mainloop()
Depressed Dingo