[Python-Dev] Proposal: add odict to collections

[Stephen J. Turnbull]

dbpokorny at gmail.com writes:

 > It is possible to get both ordered dict and sorted dict semantics in
 > the same type if you replace (key, value) pairs for dictionary entries
 > with (key,value,order) triples.

Roundup uses something like this concept for its value choice menus.
I don't actually think it's used, though, except as a way to allow
admin user input that inserts an item at a position.