[Python] Last element in OrderedDict

I have od of type OrderedDict. I want to access its most recently added (key, value) pair. od.popitem(last = True) would do it, but would also remove the pair from od which I don't want.

What's a good way to do that? Can /should I do this:

class MyOrderedDict(OrderedDict):
def last(self):
return next(reversed(self))

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