class Book:

    def __init__(self, bookName):
        self.bookName = bookName
        self.sellOrders = []
        self.buyOrders = []

25dd7ee3c0c9aea53c7cd5bd094541cff782cad6
<mask token>

class Book:
    <mask token>

class Book:

    def __init__(self, bookName):
        self.bookName = bookName
        self.sellOrders = []
        self.buyOrders = []
