Terry J. Reedy added the comment:
My thoughts on this. Overall, +.something (and increasing as I look at it more
;-).
I am opposed to adding this to the relatively long file menu. It has nothing to
do with manipulating or editing files. If it is to go in, please put it on the
help menu, at least for now, as the intention is to somehow help beginners. If
we ever add a demo section or submenu to the Help menu or Demo to the top-level
level menu, we can move this.
Any patch should be applied to both 3.4 and 3.5. Turtledemo apparently does not
exist in 2.7.
Idle NEWS items first go into the Idle section of the regular NEWS file. They
are supposed to be copied into the idlelib/NEWS with each release. That has
sometimes happened but not always. (I should open separate issue to fix both
the idlelib files and the procedure.) In any case, NEWS entries should not be
added to a patch until it is about to be committed. Otherwise, merge conflicts
are possible or even likely.
With the main code in turtledemo.__main__ wrapped in a function, we could pass
an 'idle' argument so that the demo could modify its behavior when run from
Idle. I mention a possibility below.
The patch runs turtledemo within the Idle process. It might be better to run it
in a separate subprocess:
python -c "from turtledemo.__main__ import main; main('idle')"
One reason, aside from not leaving all the imports around, is that 3 of the
demos print to console.
* When clock is stopped, a traceback is printed; this in mentioned in a tracker
issue (and should be fixed).
* Penrose prints each info about each round; this text could/should be put in a
popup text window.
* Tree prints '1024'; this could be eliminated or put on the status bar under
the text window, as another demo does.
When Idle is run windowless with pythonw on Windows, attempts to print to the
non-existent console crash the process. There have been several bug issues
about this. The current patch should not be pushed with turtledemo as is unless
tested with installed 3.4.1 by hand-patching idlelib. Or, all console prints
should be eliminated.
However, a future addition to turtledemo could create a problem. That is why I
think it better that only idlelib code run within the idle process.
I am bothered a bit that there is little relationship between Idle and
turtledemo. Both using tkinter seems not too relevant. That both tend to be
used by less experienced Python users seems a bit thin. The relationship would
be stronger if there were other demos (which I would like) or if there were
option in the demo to load the code for a particular example into an Idle
editor window. (Each demo will run independently in an Idle user process - text
output, including tracebacks resulting from ungracefully closing an example
before it is done, appears in the Shell window.)
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versions: +Python 3.5
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<http://bugs.python.org/issue17172>
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