Why Isn't My Image Showing With Tkinter?

Question

Following this answer, I am trying to get an image to display, yet when I go and run it (nearly exactly as it is in the answer), the window doesn't display the image.

from PIL import Image
import tkinter

window = tkinter.Tk()
window.title("Join")
window.geometry("300x300")
window.configure(background='grey')
imageFile = "/Users/glennsha/Desktop/APCS_Create/Rank_icons/champion1.jpg"
window.im1 = Image.open(imageFile)

input()
window.mainloop()

Answer 1

Just follow the answer in the same link you have quoted. I have added explanations to the relevant sections to help your understanding. You can read more about Image and ImageTk here.

from PIL import Image, ImageTk # I have added the import of ImageTk 
import tkinter

window = tkinter.Tk()
window.title("Join")
window.geometry("300x300")
window.configure(background='grey')
imageFile = "/Users/glennsha/Desktop/APCS_Create/Rank_icons/champion1.jpg"

#Creates a Tkinter-compatible photo image, which can be used everywhere Tkinter expects an image object.
im1 = ImageTk.PhotoImage(Image.open(imageFile))

#Next, you need to put your image into a widget before it can be visible.
# Your reference answer used a Label widget. We will use the same here.
# This Label widget is a child of "window" which is the Tk() window. 
panel = tkinter.Label(window, image = im1)

#Next you need to put the widget into the Tk() window before the widget can be made visible.
# Here, the Pack geometry manager is used to put/locate the widget containing
# the images into the Tk() Window.
panel.pack(side = "bottom", fill = "both", expand = "yes")

window.mainloop()