🐧 [$] "Structural pattern matching" for Python, part 2

We left the saga of PEP 622 ("Structural Pattern Matching") at the end of June, but the discussion of a Python "match" statement—superficially similar to a C switch but with extra data-matching features—continued. At this point, the next steps are up to the Python steering council, which will determine the fate of the PEP. But there is lots of discussion to catch up on from the last two months or so. ...