import tkinter
root = tkinter.Tk()
root.title('Hello Window')
root.geometry('800x900')
canvasDummy = tkinter.Canvas(root, width = 600, height = 750, bg = "blue")
canvasDummy.place(x=0, y=0)
imgD = tkinter.PhotoImage(file="pygra.png")
canvasDummy.create_image(0, 0, image=imgD)
root.mainloop()