2013/5/15 Don Spaulding <donspauldingii@gmail.com>
Even if the only ordering change that was made was to magically give OrderedDict.__init__ its **kwargs in order, it would clean up these instances, which I initially referred to as literals.

foo = OrderedDict(

Since PEP3115, classes can __prepare__ a custom dict:

from collections import OrderedDict
class OrderedDictBuilder(type):
    def __prepare__(metacls, name, bases):
        return OrderedDict()
    def __new__(cls, name, bases, classdict):
        del classdict['__module__']  # ugh
        return classdict

Then we can (ab)use the Class syntax to preserve the order!

class foo(metaclass=OrderedDictBuilder):
    b = 1
    a = 2

assert repr(foo) == "OrderedDict([('b', 1), ('a', 2)])"

There is probably a way to get rid of the "metaclass=" part.
I'm not sure to like it, though.

Amaury Forgeot d'Arc