[Tkinter] Image with pillow on macos not showing

[rhoekstra]

Hi there,

I'm fairly new to programming in Python and was going through a tutorial which came across GUI programming with tkinter (Python3).

I was entering the code, pressed the button which should, as per the tutorial, show the image on the canvas, but it failed. the image (size) was drawn and removed quickly, I only saw a slight black square being drawn before everything was white again.

As this is no new issue, I found I had to keep a reference to the image for garbage collection not to get rid of it, but that wasn't helping. So I came across this code as shown below as a very simple example showing an image.

To change platform (I'm on MacOS), I installed Python and pillow on a Windows VM of mine and the very same code ran without any problems. So I figured it's got something to do with MacOS and these versions of code.

I'm running:
* MacOS Mojave 10.14.4
* Python 3.7.3
* Pillow 6.0.0

Is this quite the same issue? or is there some difference in platforms how to get the image to show? Any pointers to the solution would be greatly appreciated, thanks in advance.

#!/usr/local/bin/python3
import tkinter
from PIL import Image, ImageTk
img = Image.open('images/img.jpg')
root = tkinter.Tk()
canvas = tkinter.Canvas(root, width=img.width, height=img.height,
    background='blue', borderwidth=0, )
canvas.pack()
tkimg = ImageTk.PhotoImage(img)
imagesprite = canvas.create_image(0, 0, anchor=tkinter.NW, image=tkimg)
root.mainloop()

Result on MacOS:


Result on Windows: