How can I access a deeply nested dictionary using tuples?

Question

I would like to expand on the autovivification example given in a previous answer from nosklo to allow dictionary access by tuple.

nosklo\'s solution looks like th

Answer 1

This seems to work

def __setitem__(self, key, value):
    if isinstance(key, tuple):
        node = self
        for i in key[:-1]:
            try:
                node = dict.__getitem__(node, i)
            except KeyError:
                node = node[i] = type(self)()
        return dict.__setitem__(node, i, value)
    return dict.__setitem__(self, key, value)