[Python-Dev] Guarantee ordered dict literals in v3.7? (original) (raw)

Steven D'Aprano steve at pearwood.info
Mon Nov 6 08:14:35 EST 2017

On Mon, Nov 06, 2017 at 12:27:54PM +0100, Antoine Pitrou wrote:

The ordered-ness of dicts could instead become one of those stable CPython implementation details, such as the fact that resources are cleaned up timely by reference counting, that people nevertheless should not rely on if they're writing portable code.

Given that (according to others) none of IronPython, Jython, Batavia, Nuitka, or even MicroPython, should have trouble implementing an insertion-order preserving dict, and that PyPy already has, why should we say it is a CPython implementation detail?

-- Steve

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