I’m sorry for not being clear. This problem appears with Tk 8.6, even in
Python 3.5 (compiled by me).
I’ve succeeded to reproduce only once the @autorelease pool error (it
appeared after several open/close of the preferences or about window). Did
anyone else see it?

Le lun. 30 juil. 2018 à 02:51, Terry J. Reedy <report@bugs.python.org> a
écrit :

>
> Terry J. Reedy <tjreedy@udel.edu> added the comment:
>
> On idledev thread "Mac IDLE 3.7.0 freezes when accessing Preferences",
> Walter Schnyder reported something similar.  Combining two posts:
>
> "using python.org Python 3.7.0 (v3.7.0:1bf9cc5093, Jun 26 2018, 23:26:24)
> [Clang 6.0 (clang-600.0.57)] on darwin [64-bit] and came across these [new]
> bugs on several Macs, all running OS X v 10.13.5.
> [Has run IDLE before, back to 3.4.]
>
> Bug A:
> 1. From the shell select Preferences in the IDLE menu.
> 2. Cancel the Preferences to get back to the Shell
> 3. The shell is frozen. It doesn’t even react to CONTROL-D.
>
> The only way I found to resurrect it is to control-click the shell window
> and select “Go to file/line” causing an error message to appear. Click OK
> and the shell comes back to life.
>
> Note: This doesn’t only happen when accessing preferences. It also happens
> when selecting “About IDLE” in the IDLE menu."
>
> After starting with 'python3 -m idlelib'
>
> "The same problems occur. There is no error in the terminal window.
> But I learned something new: after running the steps for bug A, IDLE is
> frozen (no blinking cursor, not responding to Control+D. However, if I
> bring another application’s window to the front (by clicking on it) then
> click back on IDLE’s window, this resurrects IDLE, the cursor blinks and
> Control+D quits."
>
> test_idle passes.  When running 'python3 -m idlelib.configdialog' or
> 'idlelib.help_about', which run a human-viewed test, there is no problem
> when closing either dialog.
>
> Vlad, if I understand your post, you *do* see the problem with 3.5? With
> the python.org installer and tk 8.5? As far as I know, no one has had a
> problem with this.  Or only with a private compile with tk 8.6?
>
> This is important because 3.5 IDLE has not been touched since about 18
> months, and if there is only a problem when using tk 8.6, then I have to
> suspect that this and other new problems are result of tk 8.6 on Mac or
> tkinter needing a patch to support it.
>
> ----------
> components: +macOS
> nosy: +ned.deily, rhettinger, ronaldoussoren, taleinat, walters
> stage:  -> needs patch
> title: IDLE Caret/Focus Lost -> IDLE: Freeze when closing Settings (&
> About) dialog on MacOS
> versions: +Python 3.8
>
> _______________________________________
> Python tracker <report@bugs.python.org>
> <https://bugs.python.org/issue34120>
> _______________________________________
>