Just a small suggestion to consider: If the title was "Zero-Cost Exceptions and Error Interfaces in Python" I would have received it in my personal Hacker News feed in Telegram (https://github.com/lawxls/HackerNews-personalized) as I do have "Python" keyword added. And there's also email notification services people use which might have Python as a keyword.

Thanks for providing further resources btw, added Sebastian Witowski presentation to "watch later" list :)