import Tkinter
from Tkconstants import *
def window(tk):

    global photo       

    frame=Tkinter.Frame(tk)

    frame.pack()

    

    canvas=Tkinter.Canvas(frame,bg ='white', width=500,height=500)

    canvas.pack()

    

    photo=Tkinter.PhotoImage(file="background.gif")
    canvas.create_image(200, 250, image=photo)

    


root = Tkinter.Tk()

root.title("Simulation of infectious diseases")

window(root)

root.mainloop()