Is there any example of such move that does not ends with enshittyfication?

So PSF folks are doing to us the same as the US govt is doing to them. There is no difference. Oh the irony is sweet.

This is pure relativism… No good, no bad, all is the same…

Does not seems to work on 3.12:

Python 3.12.11 (main, Jun 29 2025, 16:18:35) [MSC v.1944 64 bit (AMD64)] on win32
>>> def toto(tata=>[]):
  File "<stdin>", line 1
    def toto(tata=>[]):
                  ^
SyntaxError: invalid syntax

This is the way you’re supposed to write it in Python.

It is something you get used to, yet I think it’s sad.

Python typing system is the reason of its huge flexibility, but as many other scripting language, it’s also what makes it so hard to optimize.

I have no idea how you can change that without bringing some “JIT-oriented” features inside the Python language itself.

I still hope for the best, but I’m unsure we will be able to see an efficient JIT system inside CPython soon.

PyPy had to rewrite the whole Python implementation in a JIT focused way, and even with that, they are (not uncommon) cases when PyPy is slower.

Most of my objects are actually dataclasses.