The problem is not the code, but the icon. I tried creating an xbm
with another program than Gimp (some KDE icon editor), and although it looks terrifyingly ugly, it does show an icon.
I guess I have to find a creator that gives an "understandable" icon for my Python program.
Edit
The iconbitmap
method turned out to be black and white only, so it was useless after all.
After a long search, I found the solution to set the color of an application's icon for Python 3 (on Linux). I found it here:
root = Tk()
img = PhotoImage(file='your-icon')
root.tk.call('wm', 'iconphoto', root._w, img)
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