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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 clear(self, split):
 """Delete Candidates of each class initialized with the CandidateExtractor from given split the database. :param split: Which split to clear. :type split: int """

        for candidate_class in self.candidate_classes:
            logger.info(
                f"Clearing table {candidate_class.__tablename__} (split {split})"
            )
            self.session.query(Candidate).filter(
                Candidate.type == candidate_class.__tablename__
            ).filter(Candidate.split == split).delete(synchronize_session="fetch")