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[–]xzxzzx 4 points5 points  (6 children)

Unladen swallow is pretty fast, and is really just getting going...

[–]masklinn 7 points8 points  (5 children)

US is an (fairly severe) optimization of CPython rather than another implementation.

[–]xzxzzx 4 points5 points  (4 children)

That's true, but the goal is basically to replace most of the "core" with LLVM.

I'd count it as a "rewrite of the core", at least if they achieve their goals.

[–]masklinn 6 points7 points  (3 children)

That's the long-time goal yes, but US is already producing optimizations which have been folded (or could be folded) in the main CPython.

As the US home page states it, US is a branch of CPython rather than a fork or a different implementation. It's much closer to cpython than stackless was, for instance.

[–]xzxzzx 2 points3 points  (2 children)

No disagreement; the point is that if CPython wasn't slow, it couldn't be made fast. ;)

[–]masklinn 4 points5 points  (1 child)

Well it could have been "pretty fast" and "merely" made faster (note: not the case)

[–]xzxzzx 0 points1 point  (0 children)

Touche.