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For Python people, I believe the Sorbet Compiler is basically to Ruby what Cython is to Python. Although, Cython is happy to compile things without types attached.

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No, it's more like this: Mypy is to Python what Sorbet is to Ruby and mypyc is basically a Python compiler, like the Sorbet compiler.

CPython is just like Ruby MRI. It does not do type checking or use type annotations and it's basically an interpreter not a compiler.

To clear up a possible misunderstanding, CPython != Cython.

And for more context: Cython/mypyc differences - https://mypyc.readthedocs.io/en/latest/introduction.html#dif...

Also mypyc is still very alpha, while cython is production-usable for years now.

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