[Python-ideas] working on a PEP for the __preview__ package

[Stephen J. Turnbull]

anatoly techtonik writes:

 > I am afraid that dunders will become a standard thing in many Python
 > packages, because of everybody's natural desire to use latest features that
 > work right.

__preview__ is for the latest features that have not been confirmed to
work right (yet).  Where's the problem?  Newbies certainly should not
be using such in production applications, although it's an excellent
way to learn everything you always wanted to know about Python
internals but were afraid to ask (and more!) <wink/>