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Until 3.8 py3 was slower than py2 in practically all benchmarks, and 3.8 is a marginal improvement at best. So I’m slapping a massive <citation needed> on your “massive” performance improvements

We switched a service from 2.7 to 3.5 and saw an immediate 45% reduction in memory usage and 20% reduction in runtime. That's massive IMO. We saw further (but smaller) performances benefits upgrading to 3.6, again when upgrading to 3.7, and expect to see even more with 3.8.

https://youtu.be/0kXaLh8Fz3k?t=322

People can and have been fine without those things for a long time. Many of them could have been added to Python2 without any trouble. And yet we still have a GIL.

Was there something about the design of Python2 that would have prevented these features? Honest question.

Probably not, but I’m still glad they did clean up. They could have done more.