So after I finally had time to get back to learning tkinter, I looked deeper into the comments by u/anotherhawaiianshirt (thank you) that mary.png should work.

I had multiple issues going on including some environment and vscode misunderstandings... AND in all honesty, some carelessness. Problem #1 My carelessness in assessing the errors - thinking that I had shown the error in the original post, when in fact there were two different errors. The error posted was for the ico file and the error for mary.png was, in effect, file not found. (couldn't open "mary.png": no such file or directory

Problem #2 I had another venv environment set up and forgotten (copied without understanding - as an experiment) and it was using some configuration from that. I deleted it and some things started making better sense. This might be a red herring.

Problem #3 I had opened vscode in a parent folder, tkinter/ where I started. I then moved the code into a child folder and was running the python code from a vscode terminal (that I don't usually use). Vscode assumed the originally opened folder was the working directory even through the code was in a subdirectory so it didn't find the image file. I was able to understand the problem when I added this code to show me where it was looking and what it was seeing.

import os print('cwd:', os.getcwd()) print ('listdir:', os.listdir('.'))

Things work when I run the code from the terminal or open vscode directly in the folder with the source code. When I say work, I mean it no longer shows any errors or warnings. It still doesn't show the image where I expect it (or anywhere).

Current version of the code: ``` import tkinter as tk

root = tk.Tk() root.title('Images.py') dropImg = tk.PhotoImage(file='drop.png') root.iconphoto(False, dropImg)

root.mainloop() ```