Hello, I need to have a dictionary of dictionaries of numbers, and I would like the dictionaries to be defaultdicts, because it makes the code much nicer (I want to be able to do: d['foo']['bar']+=1 ).
So naturally, I used: d = defaultdict(lambda :defaultdict(int)) It works great, but now I can not pickle it. I could ofcourse used a real function and not a lambda, but this would make things (a) somewhat slower and (b) a bit ugly. Is there another way of achieving the same behaviour, that allow for pickling? Thanks, Yoav
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