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Tue Sep 5 09:22:48 EDT 2017 · https://mail.python.org/pipermail/python-dev/2017-September/149153.html

On Tue, 5 Sep 2017 17:38:06 +0900
INADA Naoki <songofacandy at gmail.com> wrote:
> 
> Like that, how about removing OrderedDict Pure Python implementation
> from stdlib and require it to implementation?

I don't like this.  The C version of OrderedDict is probably very hard
to read, while the Python version helps understand the semantics.
Also, when devising a new API, it's much easier to first try it out on
the Python version.

> I'm considering adding `OrderedDict.lru_get(key, default=None)`  which
> atomically lookup key and move the key to end if found.

The Python version needn't have the same atomicity requirements as the
C version.

Regards

Antoine.

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Showing content from https://mail.python.org/pipermail/python-dev/2017-September/149153.html below:

[Python-Dev] [RFC] Removing pure Python implementation of OrderedDict