Message 373872 - Python tracker

The PEP was accepted apparently by Guido sometime after the second posting 21-Nov-2017.  Guido added the annotations entry to __future__ on 1/26/2018 with the 'mandatory' version changed to 4.0, which means 'some indefinite undecided future version'.  I consider '4.0' to the intentional and definitive until Guido or Lucasz say otherwise.

When PEP implementations differ from the PEP, we do not usually go back and revise the PEP.  The implementation rules unless clearly buggy.