couldn't recognize data in image file
# PIL solution
from tkinter import *
from PIL import ImageTk, Image
tkFenster = Tk()
canv = Canvas(master=tkFenster)
canv.place(x=0, y=0, width=750, height=531)
img = ImageTk.PhotoImage(Image.open("mond.gif")) # <-- PIL
canv.create_image(0, 0, image=img, anchor='nw')
mainloop()