Updating Tkinter Label with an Image

Question

Well I got a \"small\" problem with updating a label using Tkinter and PIL.

As soon as I press the cheese Button it should display foo2, but it just

Answer 1

Well, I think that the reason is self.show which is None when you press the button. This is because this line:

self.show = Label(self.root, image = self.mask).pack(side = "left")

should be:

self.show = Label(self.root, image = self.mask)
self.show.pack(side = "left")

This happens, because pack, grid etc. return None.