[Python-Dev] PEP 468 (Ordered kwargs)

[Maciej Fijalkowski]

Hi

I would like to point out that we implemented rhettingers idea in PyPy
that makes all the dicts ordered by default and we don't have any
adverse performance effects (in fact, there is quite significant
memory saving coming from it). The measurments on CPython could be
different, but in principle OrderedDict can be implemented as
efficiently as normal dict.

Writeup: http://morepypy.blogspot.com/2015/01/faster-more-memory-efficient-and-more.html

Previous discussion:
https://mail.python.org/pipermail/python-dev/2012-December/123028.html

Cheers,
fijal