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In theory the programming language is independent from the implementation. You could write an alternate implementation if you wanted.

JIT-ness is a concept related to the implementation, not to the language.

Gotcha, that makes sense. So I'm guessing that java based python vs c based python is an example of theory vs implementation? Thanks for explaining!

Yup

The language is, however, designed to be JITted. Languages are not designed in isolation.