human
I am working on the file "Backup/Matching Market v8.ipynb".
The first task is:
Construct the market
For the market two classes are made. The market itself, which controls the buyers and the sellers, and the book. The market has a book where the results of the clearing procedure are stored.
Can you write Python code for it?
 Give me a the Python code you requested?
assistant
#Here is the Python code you requested.

# the book is an object of the market used for the clearing procedure
class Book():
    def __init__(self):
        self.ledger = pd.DataFrame(columns = ("role","name","price","cleared"))

    def set_asks(self,seller_list):
        # ask each seller their name
        # ask each seller their willingness
        # for each willingness append the data frame
        for seller in seller_list:
            seller_name = seller.get_name()
            seller_price = seller.get_asks()
            for price in seller_price:
                self.ledger=self.ledger.append({"role":"seller","name":seller_name,"price":price,"cleared":"in process"},
                                               ignore_index=True)

    def set_bids(self,buyer_list):
        # ask each seller their name
        # ask each seller their willingness
        # for each willingness append the data frame
        for buyer in buyer_list:
            buyer_name = buyer.get_name()
            buyer_price = buyer.get_bids()
            for price in buyer_price:
                self.ledger=self.ledger.append({"role":"buyer","name":buyer_name,"price":price,"cleared":"in process"},
                                               ignore_index=True)

    def update_ledger(self,ledger):
        self.ledger = ledger
        
    def get_ledger(self):
        return self.ledger
    
    def clean_ledger(self):
        self.ledger = pd.DataFrame(columns = ("role","name","price","cleared"))

class Market():
    def __init__(self):
        self.count = 0
        self.last_price = ''
        self.book = Book()
        self.b = []
        self.s = []
        self.buyer_list = []
        self.seller_list = []
        self.buyer_dict = {}
        self.seller_dict = {}
        self.ledger = ''
    
    def update_seller(self):
        for i in self.seller_dict:
            self.seller_dict[i].step += 1
            self.seller_dict[i].set_quantity()

    def update_buyer(self):
        for i in self.buyer_dict:
            self.buyer_dict[i].step += 1
           ...