subclassing from OrderedDict and defaultdict

Question

Raymond Hettinger showed a really cool way to combine collection classes:

from collections import Counter, OrderedDict
class OrderedCounter(Counter, OrderedDict)         


        

Answer 1

I've found a way to subclass them both, but not sure if there are bugs:

class OrderedDefaultDict(defaultdict, OrderedDict):
    def __init__(self, default, *args, **kwargs):
        defaultdict.__init__(self, default)
        OrderedDict.__init__(self, *args, **kwargs)