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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 get_cursor(self):
 """Get a cursor for the active connection. The cursor can be used to execute arbitrary queries against the database. This method also checks that the metadata table exists in the schema, and if not, it creates it. :returns: A valid cursor opened against the connection. :rtype: sqlite. :raises: An sqlite.Error will be raised if anything goes wrong. """

        if self.connection is None:
            try:
                self.open_connection()
            except OperationalError:
                raise
        try:
            cursor = self.connection.cursor()
            cursor.execute('SELECT SQLITE_VERSION()')
            data = cursor.fetchone()
            LOGGER.debug("SQLite version: %s" % data)
            # Check if we have some tables, if not create them
            sql = 'select sql from sqlite_master where type = \'table\';'
            cursor.execute(sql)
            data = cursor.fetchone()
            LOGGER.debug("Tables: %s" % data)
            if data is None:
                LOGGER.debug('No tables found')
                sql = (
                    'create table metadata (hash varchar(32) primary key,'
                    'json text, xml text);')
                LOGGER.debug(sql)
                cursor.execute(sql)
                # data = cursor.fetchone()
                cursor.fetchone()
            else:
                LOGGER.debug('metadata table already exists')

            return cursor
        except sqlite.Error as e:
            LOGGER.debug("Error %s:" % e.args[0])
            raise