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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def dump(cls):
 """Dump data into a dict. .. versionadded:: 0.0.2 """

        d = OrderedDict(cls.Items())
        d["__classname__"] = cls.__name__
        for attr, klass in cls.Subclasses():
            d[attr] = klass.dump()
        return OrderedDict([(cls.__name__, d)])