[issue27024] IDLE shutdown glitch when started by import

[Terry J. Reedy]

Terry J. Reedy added the comment:

I applied to 2.7 after changing the file name.  I still get
F:\Python\dev\27>pcbuild\python_d.exe -m test.regrtest -ugui test_idle
[1/1] test_idle
can't invoke "event" command:  application has been destroyed
    while executing
"event generate $w <<ThemeChanged>>"
    (procedure "ttk::ThemeChanged" line 6)
    invoked from within
"ttk::ThemeChanged"
can't invoke "event" command:  application has been destroyed
    while executing
"event generate $w <<ThemeChanged>>"
    (procedure "ttk::ThemeChanged" line 6)
    invoked from within
"ttk::ThemeChanged"

This is the only instance left in all three versions after using root.update_idletasks where needed.  It does not occur when running the particular test file by itself.  Mark Roseman say something similar running test.test_idle with 3.6 on Mac.  I do not running same on Windows.

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<http://bugs.python.org/issue27024>
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