Message 311148 - Python tracker

This issue tracker has been migrated to GitHub, and is currently read-only.
For more information, see the GitHub FAQs in the Python's Developer Guide.

Content
ISTM that those ought to be separate issues since PEP 560 has been
implemented fully here.

Also I am getting cold feet about Union simplification (esp. this late in
the release cycle). We should probably retreat on the typing tracker and
discuss why we're considering it -- is there evidence (even anecdotal) that
it's harmful?