28.02.2013 11:15, Eric Snow wrote:
* have the **kwargs param be an OrderedDict rather than a dict * have class definitions happen relative to an OrderedDict by default rather than a dict, and still overridable by a metaclass's __prepare__().
While having class namespace ordered sounds very nice, ordered **kwargs sometimes may not be a desirable feature -- especially when you want to keep a cooperatively used interface as simple as possible (because of the risk that keyword argument order could then be taken into consideration by *some* actors while others would still operate with the assumption that argument order cannot be known...).
Both of these will need OrderedDict in C, which is getting close (issue #16991).
Ad issue #16991: will the present semantics of inheriting from OrderedDict be kept untouched? (I mean: which methods call other methods => which methods you need to override etc.) If not we'll have a backward compatibility issue (maybe not very serious but still...). Cheers. *j