This does NOT mean Python will get Tail Call Optimization, as Guido cannot be shown The Light, and has decided.
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Looking at python from the outside a lot of changes since GvR stepped down seem like stuff he'd not have been fond of.
Moreover, Guido is in favour of ongoing addition of major new features (like pattern matching), worrying that without them Python would become a “legacy language”:
https://discuss.python.org/t/pep-8012-frequently-asked-quest...
If you look at the feature in detail, and especially how it clashes with the rest of the language, it's awful. For example:
Given that one of the fundamental rules of programming is "don't use magic numbers, prefer named constants", that's terrible language design.