Ned Deily <n...@python.org> added the comment:

> Does IDLE every run long enough with Apple's tk before failure to make 
> continuing useful?

Yes, depending on what you are doing, IDLE *may* run just fine with the system 
Tk.  But you may may run into this issue depending on how you scroll.  Or, 
among the worst bugs, if you try to type in characters not directly available 
on the keyboard by using one of the available composition characters, like 
opt-u followed by a vowel to produced an "umlauted" vowel with the US keyboard 
layout, Tk will immediately crash taking IDLE with it and with no opportunity 
to save any work in progress.  Many people will not run into those bugs but it 
can be very painful to those who do.

> Any comments here before I open a new issue?

I don't think changing the message is going to make much of a difference.  
There isn't much an end user can do other to avoid the known behaviors that 
cause problems, install another version of Python (which may not be an option 
for many novice users), or not use IDLE.  Back when we did not ship our own 
copy of Tcl/Tk with the python.org macOS installers, there *was* something else 
you might be able to do: install a more up-to-date third-party Tcl/Tk that 
would then be automatically used. But that's not longer an option nor is it 
needed.

I think the best thing we can do is help make it easier for people building 
Python to not link with the broken system Python and improve the using Python 
on macOS documentation.  I have issues opened for both of those.

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue37391>
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