importamos los módulos que necesitamos: tkinter... import tkinter root = tkinter.Tk() # crea canvas de 400 x 300 c = tkinter.Canvas(width=400, height=300); c.create_rectangle(50, 100, 150, 280, fill="blue") c.create_rectangle(155, 50, 255, 280, fill="#00aa00") c.create_rectangle(260, 75, 360, 280, fill="#dd0000") c.grid(row=0, column=0) c.mainloop() 50, 100 150, 280 155, 50 255, 280 260, 75 360, 280