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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 _members(self):
 """ Return a dict of non-private members. """

        return {
            key: value
            for key, value in self.__dict__.items()
            # NB: ignore internal SQLAlchemy state and nested relationships
            if not key.startswith("_") and not isinstance(value, Model)
        }