I'm inclined to agree that a Python 3.8 PEP in the spirit of the PEP 3003 language moratorium could be a very good idea. Between matrix multiplication, enhanced tuple unpacking, native coroutines, f-strings, and type hinting for variable assignments, we've had quite a bit of syntactic churn in the past few releases, and the rest of the ecosystem really hasn't caught up on it all yet (and that's not just other implementations - it's training material, online courses, etc, etc).

If we're going to take such a step, now's also the time to do it, since 3.8 feature development is only just getting under way, and if we did decide to repeat the language moratorium, we could co-announce it with the Python 3.7 release.

Cheers,

Nick.