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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 _default_dict(self):
 """Return a dictionary with the default for each option."""

        options = {}
        for attr, _, _, default, multi, _ in self._optiondict.values():
            if multi and default is None:
                options[attr] = []
            else:
                options[attr] = default
        return options