On 10 November 2017 at 17:43, Guido van Rossum <guido@python.org> wrote:Then the next step I propose is a PR with a full implementation. After that I'll likely approve the PEP (or we'll have minor feedback based on trying the implementation).There seem to be some action items from this thread that I haven't seen reflected in the PEP source code yet.[...snip...]Yes, sorry, I wanted to make updates to the PEP and reference implementation,but last two weeks were very busy.Hopefully, I will work on it this weekend.