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Author ned.deily
Recipients George Pantazes, Rakesh Singh, ned.deily, terry.reedy, willingc
Date 2019-06-25.15:42:01
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <1561477322.22.0.542856611875.issue37391@roundup.psfhosted.org>
In-reply-to
Content 
> It seems to be compiled using Tcl 8.5 that is installed with the system.

Yes, and that is almost certainly the original poster's problem, as well.  In fact, this same issue was reported in Issue10731 in 2010. The Tcl/Tk 8.5 supplied by Apple in macOS is terribly out-of-date and dangerously buggy; it should never be used.  You should even be seeing a warning message from IDLE when using that system Tcl/Tk. I'm not familiar with how Homebrew manages the Tcl/Tk that their Pythons link with but, if necessary, you should follow up with them to ensure that none of their recipes use the system Tcl/Tk.

More details here:
https://www.python.org/download/mac/tcltk/
History
Date User Action Args
2019-06-25 15:42:02ned.deilysetrecipients: + ned.deily, terry.reedy, willingc, George Pantazes, Rakesh Singh
2019-06-25 15:42:02ned.deilysetmessageid: <1561477322.22.0.542856611875.issue37391@roundup.psfhosted.org>
2019-06-25 15:42:02ned.deilylinkissue37391 messages
2019-06-25 15:42:01ned.deilycreate