That's exactly the way OrderedDict works too: https://docs.python.org/2/library/collections.html#collections.OrderedDict https://docs.python.org/2/library/coll

That's exactly the way OrderedDict works too: https://docs.python.org/2/library/collections.html#collections.OrderedDict https://docs.python.org/2/library/collections.html#collectio... > An OrderedDict is a dict that remembers the order that keys were first inserted. If a new entry overwrites an existing entry, the original insertion position is left unchanged. Deleting an entry and reinserting it will move it to the end.