DRAW 3D Objects in Tkinter

[greenpy]

I am using python 2.7 on windows 7.
Drawing is wonderful in tkinter canvas widget.
Now i need draw 3D objects in tkinter and make a z cords in tkinter. I know tkinter have only x and y cords.
I try so. But i get errors

[bvdet]

It would help if you posted your code and the complete error traceback.