[ojnabieoot]

I am not qualified to make any technical arguments. There’s a strong security and tech-managerial argument for using the software that’s aligned to the reference implementation. Obviously cython is currently the better choice for risk-adverse organizations that need compiled Python. But I think C-ish level people have a good reason to trust the stability, longevity, and security of a product built by the “most official” Python folks. There would need to be a deeply compelling technological reason to choose cython, not merely chasing a few wasted cycles or nifty features.

Obviously organizations that don’t manage human lives or large amounts of money can use ‘riskier’ tools without as much worry. This isn’t an argument against cython generally. But I worked at a hospital and wrote a lot of Python, and would not have been able to get the security team to support cython on their SELinux servers without a really good argument. Cython is just an unnecessary liability when your job manages identifiers and medical details on servers accessible on a fairly wide (albeit private) network.