Since when builtin dict preserve key order?

Sat Mar 24 08:47:03 EDT 2018

Chris Angelico <rosuav at gmail.com>:
> On Sat, Mar 24, 2018 at 10:48 PM, Marko Rauhamaa <marko at pacujo.net> wrote:
>> I take it, then, that the Language Specification follows CPython's
>> version numbering. I wonder how other Python implementations declare
>> their standards compliance.
>> Have you thought to look?
>> $ pypy
> Python 2.7.12 (5.6.0+dfsg-4, Nov 20 2016, 10:43:30)
> [PyPy 5.6.0 with GCC 6.2.0 20161109] on linux2
>> Tada.

FTFY:
 Yes, that's how it works. For example PyPy prints out this initial
 prompt:
 $ pypy
 Python 2.7.12 (5.6.0+dfsg-4, Nov 20 2016, 10:43:30)
 [PyPy 5.6.0 with GCC 6.2.0 20161109] on linux2
Marko