That blog post seems a lot more involved - it adds code to the bytecode compiler as well as to the parser. I suspect that’s mostly because the `until` statemen

That blog post seems a lot more involved - it adds code to the bytecode compiler as well as to the parser. I suspect that’s mostly because the `until` statement is more complex - but another factor seems to be Python’s change in parsing technology from LL(1) to PEG.