Terry J. Reedy <tjre...@udel.edu> added the comment:
Looking at the animated .gif, Jim's problem has nothing to do with IDLE in
particular, and is as least partly specific to his system, as I do not have the
same problem on my system. (That does not mean that improvements are not
possible, so that reboots are not needed after updates.)
If one runs a file with python.exe that does not exit immediately, the taskbar
icon is the 'Python Console icon, a dark console with blue title bar and text
and the Python double snake overlaid. If on runs a file with pythonw.exe (no
console) that does not exit immediately, the taskbar icon should be the 'Python
GUI' icon, a spiral-bound notebook page with folded upper right corner and the
Python double snake overlaid. The expected use case is a GUI program, such as
a tkinter program, that runs an event loop until closed. IDLE is just the
prime example of such. Another example is the test program for this issue.
import tkinter as tk
r = tk.Tk()
r.mainloop()
When I name this file tem.py or tem.pyw and double-click, I get the respective
Python icons.
Jim, the 'blank' icon you see when you double-click *.pyw is a white sheet of
paper with the upper right corner folded. It is the first one shown when the
builtin icons are displayed. It is used when Windows cannot find the proper
icon for an application (or perhaps also when there is None).
Some while ago, after an update, my pinned Skype icon visually changed from the
blue blob with white S to this default. Yesterday, I right-clicked the folded
page icon, right-clicked 'Skype, selected Properties, and then [Change Icon] on
the Shortcut tab.
An error box popped up with a message similar to
"%SystemRoot%\Installer\{3B7E914A-93D5-4A29-92BB-AF8C3F66C431}\SkypeIcon.exe
cannot be found". My guess is that an update changed the uuid without updating
the pinned icon, so the default folded page is the substitute. When I clicked
'OK', the Change Icon dialog appeared. When I browsed to the Skype directory,
I did not find an icon file, so I clicked on Skype.exe instead, and that
worked, and I again have the Skype icon on my taskbar.
Jim, I suggest you try the same, except navigate to 3.6 pythonw.exe. Running
'import sys; sys.executable' shows the location. If pythonw.exe has the proper
icon, I expect that this should work.
----------
type: enhancement -> behavior
versions: +Python 3.6 -Python 3.8
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue32611>
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