Why are there no ordered dictionaries?

[Fredrik Lundh]

Tom Anderson wrote:

> Incidentally, can we call that the "Larosa-Foord ordered mapping"?

The implementation, sure.

> Then it sounds like some kind of rocket science discrete mathematics stuff

But math folks usually name things after the person(s) who came
up with the idea, not just some random implementer.  The idea of
combining unordered mappings and ordered sequences is older than
Python itself.

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