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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 _connect(self):
 """Connect to the MySQL database. """


        try:
            db = pymysql.connect(user=self.user, passwd=self.passwd,
                                 host=self.host, port=self.port,
                                 db=self.shdb, use_unicode=True)
            return db, db.cursor()
        except Exception:
            logger.error("Database connection error")
            raise