> Awesome!  Thanks for doing this, Victor.  I'll take a look when I can and adjust the changes for bpo-33608.  If you'll recall, I made a similar change as part of the solution for that issue, which we later reverted due to problems we discovered with daemon threads during runtime finalization.

I recall the revert dance, yeah. It took one year to fix the daemon threads and related issues! So far, buildbots look happy. I also ran many manual tests which makes me confident that the code is now reliable even with all recent changes done for isolating thread states.