Message 371102 - Python tracker

The 3.7 backport is needed but required a revised example.  The changeset is 4b378acb97a575892c0e372a6bb0c17da1ccdf3e.

PRs 20486, 20639, 20672, and 20673 are the main patch.  PRs 20646 and 20647 for 3.8 and 3.7 backport a test_codeop import change made elsewhere and not backported.  The alternative would have been changing our backport to the older naming convention.