The minimal example now contains the code:

_, unknown = __import__("argparse").ArgumentParser().parse_known_args()
[__import__("logging").warning(f"unknown arg: {arg}") for arg in unknown]

with no comment or other explanation.

I believe this may be a workaround to keep things from failing in conjunction with the run-all script, but this seems like the wrong approach. This complexity should be moved into the runner, not obscuring the example code.