def init_book()

in jupyter/demo.py [0:0]

• 19 lines of code
• 3 McCabe index (conditional complexity)

    def init_book(self):
        db = tbapi.TickDb.createFromUrl(self.tb_url)
        try:
            db.open(True)
            stream = db.getStream(self.stream_key)
            options = tbapi.SelectionOptions()
            try:
                cursor = db.select(current_milli_time() - 10000, [stream], options, 
                                   [self.record_type], 
                                   [self.symbol])
                while cursor.next():
                    msg = cursor.getMessage()
                    if msg.packageType == 'PERIODICAL_SNAPSHOT':
                        self.process_snapshot(msg.entries)
                        break
            finally:
                cursor.close()
        finally:
            db.close()