[issue14117] Turtledemo: exception and minor glitches.

[Terry J. Reedy]

Terry J. Reedy added the comment:

#22053 added main(), eliminated 'while RUN', and fixed this a 3.x debug shutdown message.

The main remaining problem I am aware of now is that some demos 'print' messages to the console (or shell), which would be a problem if there were not one (as with pythonw).  Except for one demo, the messages would fit on the demo window message button. A possible fix would be to call demo.main with the button, so mainloop demos could write back to it.
(Normal demo returns are put there now.)

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versions: +Python 2.7

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<http://bugs.python.org/issue14117>
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