How to update the image of a Tkinter Label widget?

Question

I would like to be able to swap out an image on a Tkinter label, but I'm not sure how to do it, except for replacing the widget itself.

Currently, I can display an image like so:

import Tkinter as tk import ImageTk  root = tk.Tk() img = ImageTk.PhotoImage(Image.open(path)) panel = tk.Label(root, image = img) panel.pack(side = "bottom", fill = "both", expand = "yes") root.mainloop() 

However, when the user hits, say the ENTER key, I'd like to change the image.

import Tkinter as tk import ImageTk  root = tk.Tk()  img = ImageTk.PhotoImage(Image.open(path)) panel = tk.Label(root, image = img) panel.pack(side = "bottom", fill = "both", expand = "yes")  def callback(e):     # change image  root.bind("<Return>", callback) root.mainloop() 

Is this possible?

Answer 1

The method label.configure does work in panel.configure(image=img).

What I forgot to do was include the panel.image=img, to prevent garbage collection from deleting the image.

The following is the new version:

import Tkinter as tk import ImageTk   root = tk.Tk()  img = ImageTk.PhotoImage(Image.open(path)) panel = tk.Label(root, image=img) panel.pack(side="bottom", fill="both", expand="yes")  def callback(e):     img2 = ImageTk.PhotoImage(Image.open(path2))     panel.configure(image=img2)     panel.image = img2  root.bind("<Return>", callback) root.mainloop() 

The original code works because the image is stored in the global variable img.