def __init__()

in jupyter/demo.py [0:0]


    def __init__(self, tb_url: str, stream_key: str, symbol: str, record_type: str, time_widget: widgets.Text, booksize=20):
        self.tb_url = tb_url
        self.stream_key = stream_key
        self.symbol = symbol
        self.record_type = record_type
        self.time_widget = time_widget
        self.booksize = booksize
        self.schema = {
            'key': str,
            'symbol': str,
            'side': str,
            'size': float,
            'price': float,
            'numberOfOrders': int
        }
        self.table = Table(self.schema, limit=1000, index='key')
        self.book = Book(symbol)
        self.last_updated = 0
        self.stop_reading = False
        self.init_book()