#07_11_canvas.py from tkinter import * class App: def __init__(self, master): canvas = Canvas(master, width=400, height=200) canvas.pack() canvas.create_rectangle(20, 20, 300, 100, fill='blue') canvas.create_oval(30, 50, 290, 190, fill='#ff2277') canvas.create_line(0, 0, 400, 200, fill='black', width=5) root = Tk() app = App(root) root.mainloop()