Treasury.make_asset_accounts(['TGA'])
Treasury.make_liability_accounts(['Treasury Securities'])
# Primary Dealer
Primary_Dealer.make_asset_accounts(['Deposits','Treasury Securities'])
Primary_Dealer.make_liability_accounts(['Debts to Fed'])
# Household
Household.make_asset_accounts(['Deposits','Treasury Securities'])
Household.make_liability_accounts(['Loans'])
#Kod0 Banka, hanehalkına kredi verir.
Bank.book(debit=[('Loans',100)],credit=[('Deposits',100)])
Household.book(debit=[('Deposits',100)],credit=[('Loans',100)])
display_svg(SVG(Bank.draw_balance_sheet("Bank", width=500)))
display_svg(SVG(Household.draw_balance_sheet("Household", width=500)))
#Kod1
"""Fed,primary dealers ile repo işlemi yapar. Burada primary dealerslerin repo için teminat verdiği tahvilleri bilanço dışında gösterdiğini varsayıyoruz """
Fed.book(debit=[('Credits to Financial Institutions',200)],credit=[('Reserves',200)])
Bank.book(debit=[('Reserves',200)],credit=[('Deposits',200)])
depository_A = Ledger(residual_account_name="Equity")
depository_B = Ledger(residual_account_name="Equity")
broker_M = Ledger(residual_account_name="Equity")
fi_J = Ledger(residual_account_name="Equity")
fed.make_stock_accounts(['Securities Holdings','Securities belonging to Depository A','Securities belonging to Depository B','Reserves Depository A','Reserves Depository B','Assets'])
depository_A.make_stock_accounts(['Securities Holdings','Securities belonging to Broker M','Reserves','Deposits by Broker M'])
depository_B.make_stock_accounts(['Securities Holdings','Securities belonging to Financial Institution J','Reserves','Deposits by Financial Institution J'])
broker_M.make_stock_accounts(['Securities Holdings','Securities belonging to Customers','Reserves with Depository A','Customer Deposits'])
fi_J.make_stock_accounts(['Securities Holdings','Securities belonging to Customers','Reserves with Depository B','Customer Deposits'])
""" ---------------------------------------------------------------------------
Initialize balance sheets (all symmetric balance sheets with 0 equity, for simplicity)
"""
fed.book(debit=[('Securities Holdings',1000)],credit=[('Securities belonging to Depository A',500),('Securities belonging to Depository B',500)])
fed.book(debit=[('Assets',2000)],credit=[('Reserves Depository A',1000),('Reserves Depository B',1000)])
depository_A.book(debit=[('Securities Holdings',1000)],credit=[('Securities belonging to Broker M',1000)])
depository_A.book(debit=[('Reserves',1000)],credit=[('Deposits by Broker M',1000)])
depository_B.book(debit=[('Securities Holdings',1000)],credit=[('Securities belonging to Financial Institution J',1000)])
depository_B.book(debit=[('Reserves',1000)],credit=[('Deposits by Financial Institution J',1000)])
broker_M.book(debit=[('Securities Holdings',1000)],credit=[('Securities belonging to Customers',1000)])
broker_M.book(debit=[('Reserves with Depository A',1000)],credit=[('Customer Deposits',1000)])
fi_J.book(debit=[('Securities Holdings',1000)],credit=[('Securities belonging to Customers',1000)])
fi_J.book(debit=[('Reserves with Depository B',1000)],credit=[('Customer Deposits',1000)])
print('Initial balance sheets:')
fed.print_balance_sheet()
depository_A.print_balance_sheet()
depository_B.print_balance_sheet()
broker_M.print_balance_sheet()
# Bankaların varlık ve yükümlülük kalemleri tanımlanıyor.
Xbankasi.make_asset_accounts(['Fixed Assets','Reserves'])
Xbankasi.make_liability_accounts(['Goodlife Deposit','Equity'])
Ybankasi.make_asset_accounts(['Reserves'])
Ybankasi.make_liability_accounts(['Goodlife Deposit','Equity'])
# Müşterilerin varlık ve yükümlülük kalemleri tanımlanıyor.
MusteriA.make_asset_accounts(['Fixed Assets','Goodlife Deposit'])
MusteriA.make_liability_accounts(['Equity'])
#Başlangıç
Xbankasi.book(debit=[('Reserves',100)],credit=[('Equity',100)])
Ybankasi.book(debit=[('Reserves',100)],credit=[('Equity',100)])
MusteriA.book(debit=[('Fixed Assets',100)],credit=[('Equity',100)])
#Başlangıç- Bilançolar
display_svg(SVG(Xbankasi.draw_balance_sheet("JP Morgan", width=500)))
display_svg(SVG(MusteriA.draw_balance_sheet("Goodlife", width=500)))
display_svg(SVG(Ybankasi.draw_balance_sheet("Citibank", width=500)))
#kod2
#Başlangıç
Xbankasi.book(debit=[('Fixed Assets',100)],credit=[('Goodlife Deposit',100)])
MusteriA.book(debit=[('Goodlife Deposit',100)],credit=[('Fixed Assets',100)])
MusteriB.make_asset_accounts(['Nakit','Mevduat','Banka Tahvili'])
MusteriB.make_liability_accounts(['Kredi'])
MusteriC.make_asset_accounts(['Nakit','Mevduat','Banka Tahvili'])
MusteriC.make_liability_accounts(['Kredi'])
# Hazinenin varlık ve yükümlülük kalemleri tanımlanıyor.
Hazine.make_asset_accounts(['Kamu Mevduatı','Dış Varlıklar']) # Bu satır eklendi.
Hazine.make_liability_accounts(['Devlet Tahvili','Dış Borçlar']) # Bu satır eklendi.
# Merkez Bankasının varlık ve yükümlülük kalemleri tanımlanıyor.
Merkez_Bankasi.make_asset_accounts(['Dış Varlıklar','İç Varlıklar','Degerleme','APİ'])
Merkez_Bankasi.make_liability_accounts(['Hazinenin Döviz Rezervleri','Emisyon','Kamu Mevduatı','Rezervler'])
#Başlangıç
MusteriA.book(debit=[('Mevduat',50)],credit=[('Kredi',50)])
Ybankasi.book(debit=[('Kredi',50)],credit=[('Müşteri A Mevduatı',50)])
Ybankasi.book(debit=[('Rezervler',50)],credit=[('Merkez Bankasına Borçlar',50)])
Xbankasi.book(debit=[('Rezervler',50)],credit=[('Merkez Bankasına Borçlar',50)])
Merkez_Bankasi.book(debit=[('APİ',100)],credit=[('Rezervler',100)])
#Başlangıç- Bilançolar
display_svg(SVG(Xbankasi.draw_balance_sheet("Banka X", width=500)))
display_svg(SVG(Ybankasi.draw_balance_sheet("Banka Y", width=500)))
display_svg(SVG(MusteriA.draw_balance_sheet("Müşteri A", width=500)))
display_svg(SVG(Merkez_Bankasi.draw_balance_sheet("Merkez Bankası", width=500)))
"""
Müşteri A, 30 TL vergi ödemesini Banka Y üzeriden yapıyor.
Banka Y'den çıkan mevduat, Ziraat Bankasına (Banka X) gidiyor.
private_agent = Ledger(residual_account_name="Equity")
central_bank = Ledger(residual_account_name="Equity")
government = Ledger(residual_account_name="Equity")
bank.make_stock_accounts([
'Currency', 'Loans', 'Reserves', 'Bonds', 'Deposits',
'Government Deposits', 'Wholesale Deposits'
])
private_agent.make_stock_accounts(['Currency', 'Deposits', 'Loans', 'Bonds'])
central_bank.make_stock_accounts(
['Assets', 'Reserves', 'Government Reserves', 'Currency'])
government.make_stock_accounts(['Deposits', 'Bonds', 'Reserves'])
""" ---------------------------------------------------------------------------
Initialize agents' balance sheets
"""
private_agent.book(debit=[('Currency', 500)], credit=[('Equity', 500)])
bank.book(debit=[('Currency', 50)], credit=[('Equity', 50)])
central_bank.book(debit=[('Assets', 550)], credit=[('Currency', 550)])
private_agent.book(debit=[('Deposits', 500)], credit=[('Currency', 500)])
bank.book(debit=[('Currency', 500)], credit=[('Deposits', 500)])
bank.book(debit=[('Reserves', 550)], credit=[('Currency', 550)])
central_bank.book(debit=[('Currency', 550)], credit=[('Reserves', 550)])
""" ---------------------------------------------------------------------------
Bank buys a government bond
"""
government.book(debit=[('Reserves', 400)], credit=[('Bonds', 400)])
bank.book(debit=[('Bonds', 400)], credit=[('Reserves', 400)])
central_bank.book(debit=[('Reserves', 400)],
credit=[('Government Reserves', 400)])
MusteriC.make_asset_accounts(['Nakit','Mevduat','Banka Tahvili'])
MusteriC.make_liability_accounts(['Kredi'])
# Hazinenin varlık ve yükümlülük kalemleri tanımlanıyor.
Hazine.make_asset_accounts(['Kamu Mevduatı','Dış Varlıklar']) # Bu satır eklendi.
Hazine.make_liability_accounts(['Devlet Tahvili','Dış Borçlar']) # Bu satır eklendi.
# Merkez Bankasının varlık ve yükümlülük kalemleri tanımlanıyor.
Merkez_Bankasi.make_asset_accounts(['Dış Varlıklar','İç Varlıklar','Degerleme','APİ'])
Merkez_Bankasi.make_liability_accounts(['Bankaların Döviz Rezervleri','Hazinenin Döviz Rezervleri','Emisyon','Kamu Mevduatı','Rezervler'])
#Başlangıç
Xbankasi.book(debit=[('Dış Varlıklar',50)],credit=[('Sermaye',50)])
Xbankasi.book(debit=[('Devlet Tahvili',50)],credit=[('Sermaye',50)])
Merkez_Bankasi.book(debit=[('Dış Varlıklar',50)],credit=[('Sermaye',50)])
#Başlangıç- Bilançolar
display_svg(SVG(Xbankasi.draw_balance_sheet("Banka X", width=500)))
display_svg(SVG(Merkez_Bankasi.draw_balance_sheet("Merkez Bankası", width=500)))
"""
Kod1
https://paravefinans595106776.wordpress.com/2021/03/05/
bolum-ii-para-politikasi-islemlerinden-alacaklar-ve-borclar/
bank = Ledger(residual_account_name="equity")
household = Ledger(residual_account_name="equity")
bank_owner = Ledger(residual_account_name="equity")
bank.make_stock_accounts(['loans','reserves','deposits'])
household.make_stock_accounts(['money holdings','loan liabilities'])
bank_owner.make_stock_accounts(['money holdings','participations'])
bank.make_flow_accounts(['income','expenses'])
household.make_flow_accounts(['income','expenses'])
bank_owner.make_flow_accounts(['income','expenses'])
""" ---------------------------------------------------------------------------
Initialize balance sheets (outside money endowments)
"""
household.book(debit=[('money holdings',100)],credit=[('equity',100)],text='Initial endowment')
bank.book(debit=[('reserves',100)],credit=([('deposits',100)]),text='Initial endowment')
""" ---------------------------------------------------------------------------
Granting of a loan
"""
bank.book(debit=[('loans',100)],credit=[('deposits',100)],text='Loan granting')
household.book(debit=[('money holdings',100)],credit=[('loan liabilities',100)],text='Take out loan')
""" ---------------------------------------------------------------------------
Interest payment
"""
bank.book(debit=[('deposits',5)],credit=[('income',5)],text='Interest payment')
household.book(debit=[('expenses',5)],credit=[('money holdings',5)],text='Interest payment')
""" ---------------------------------------------------------------------------
Principal repayment
"""
bank.book(debit=[('deposits',100)],credit=[('loans',100)],text='Principal repayment')
Fed.make_liability_accounts(['Reserves', 'Reverse Repo'])
# HedgeFund
HedgeFund.make_asset_accounts(['Deposits'])
HedgeFund.make_liability_accounts(['Repo', 'Loans'])
# Primary Dealer
Primary_Dealer.make_asset_accounts(['Deposits', 'Reverse Repo'])
Primary_Dealer.make_liability_accounts(['Repo'])
# MMF
MMF.make_asset_accounts(['Reverse Repo', 'Deposits'])
MMF.make_liability_accounts(['Repo', 'Loans'])
#Code0, Fed makes a repo with Primary Dealer.
Fed.book(debit=[('Repo', 200)], credit=[('Reserves', 200)])
Bank.book(debit=[('Reserves', 200)], credit=[('Deposits', 200)])
Primary_Dealer.book(debit=[('Deposits', 200)], credit=[('Repo', 200)])
#Balance Sheet
display_svg(SVG(Fed.draw_balance_sheet("Fed", width=500)))
display_svg(SVG(Bank.draw_balance_sheet("Bank", width=500)))
display_svg(SVG(Primary_Dealer.draw_balance_sheet("Primary Dealer",
width=500)))
#Code1, Fed makes a reverse repo with Primary Dealer
Fed.book(debit=[('Reserves', 50)], credit=[('Reverse Repo', 50)])
Bank.book(debit=[('Deposits', 50)], credit=[('Reserves', 50)])
Primary_Dealer.book(debit=[('Reverse Repo', 50)], credit=[('Deposits', 50)])
#Balance Sheet
# Müşterilerin varlık ve yükümlülük kalemleri tanımlanıyor.
MusteriA.make_asset_accounts(
['Nakit', 'Mevduat/TL', 'Mevduat/$', 'Banka Tahvili'])
MusteriA.make_liability_accounts(['Kredi'])
# Merkez Bankasının varlık ve yükümlülük kalemleri tanımlanıyor.
Merkez_Bankasi.make_asset_accounts(
['Dış Varlıklar', 'İç Varlıklar', 'Degerleme', 'APİ'])
Merkez_Bankasi.make_liability_accounts([
'Hazinenin Döviz Rezervleri', 'Emisyon', 'Kamu Mevduatı/TL',
'Kamu Mevduatı/$', 'Rezervler'
])
#Başlangıç
MusteriA.book(debit=[('Mevduat/TL', 100)], credit=[('Kredi', 100)])
Xbankasi.book(debit=[('Rezervler', 100)], credit=[('Kamu Mevduatı/$', 100)])
Xbankasi.book(debit=[('Kredi', 100)], credit=[('Botaş Mevduatı/TL', 100)])
Merkez_Bankasi.book(debit=[('Dış Varlıklar', 100)],
credit=[('Rezervler', 100)])
Merkez_Bankasi.book(debit=[('İç Varlıklar', 100)],
credit=[('Kamu Mevduatı/TL', 100)])
Merkez_Bankasi.book(debit=[('Dış Varlıklar', 100)],
credit=[('Kamu Mevduatı/$', 100)])
#Başlangıç- Bilançolar
display_svg(SVG(Xbankasi.draw_balance_sheet("Banka X", width=500)))
display_svg(SVG(MusteriA.draw_balance_sheet("Botaş", width=500)))
display_svg(SVG(Merkez_Bankasi.draw_balance_sheet("Merkez Bankası",
width=500)))
"""
def test_banking():
bank = Ledger(residual_account_name="equity")
household = Ledger(residual_account_name="equity")
bank.make_stock_accounts(['reserves','claims','security holdings','deposits','wholesale refinancing'])
household.make_stock_accounts(['money holdings','loan liabilities'])
bank.make_flow_accounts(['interest income','interest expense'])
household.make_flow_accounts(['income','expenses'])
""" ---------------------------------------------------------------------------
Initialize balance sheets (outside money endowments)
"""
household.book(debit=[('money holdings',100)],credit=[('equity',100)],text='Initial endowment')
bank.book(debit=[('reserves',100)],credit=([('deposits',100)]),text='Initial endowment')
print('Bank initial balance sheet')
bank.print_balance_sheet()
print('Household initial balance sheet')
household.print_balance_sheet()
""" ---------------------------------------------------------------------------
Granting of a loan
"""
bank.book(debit=[('claims',10)],credit=[('deposits',10)],text='Loan')
household.book(debit=[('money holdings',10)],credit=[('loan liabilities',10)],text='Loan')
print('Bank balance sheet after granting a loan')
bank.print_balance_sheet()
print('Household balance sheet after granting a loan')
household.print_balance_sheet()
""" ---------------------------------------------------------------------------
Interest payment
"""
bank.book(debit=[('deposits',1)],credit=[('interest income',1)],text='Interest payment')
household.book(debit=[('expenses',1)],credit=[('money holdings',1)],text='Interest payment')
print('Bank PnL after interest payment')
bank.print_profit_and_loss()
print('Household PnL after interest payment')
household.print_profit_and_loss()
bank.book_end_of_period()
household.book_end_of_period()
print('Bank balance sheet after interest payment')
bank.print_balance_sheet()
print('Household balance sheet after interest payment')
household.print_balance_sheet()
""" ---------------------------------------------------------------------------
Principal repayment
"""
bank.book(debit=[('deposits',10)],credit=[('claims',10)],text='Principal repayment')
household.book(debit=[('loan liabilities',10)],credit=[('money holdings',10)],text='Principal repayment')
print('Bank balance sheet after principal repayment')
bank.print_balance_sheet()
print('Household balance sheet after principal repayment')
household.print_balance_sheet()
""" ---------------------------------------------------------------------------
Dividend payment
"""
bank.book(debit=[('equity',1)],credit=[('deposits',1)],text='Dividend payment')
household.book(debit=[('money holdings',1)],credit=[('income',1)],text='Dividend payment')
print('Bank PnL after interest payment')
bank.print_profit_and_loss()
print('Household PnL after interest payment')
household.print_profit_and_loss()
bank.book_end_of_period()
household.book_end_of_period()
print('Bank balance sheet after dividend payment')
bank.print_balance_sheet()
print('Household balance sheet after dividend payment')
household.print_balance_sheet()
# Müşterilerin varlık ve yükümlülük kalemleri tanımlanıyor.
MusteriA.make_asset_accounts(['Nakit','Mevduat','Banka Tahvili','Altın'])
MusteriA.make_liability_accounts(['Kredi'])
MusteriB.make_asset_accounts(['Nakit','Mevduat','Banka Tahvili','Altın'])
MusteriB.make_liability_accounts(['Kredi'])
MusteriC.make_asset_accounts(['Nakit','Mevduat','Banka Tahvili','Altın'])
MusteriC.make_liability_accounts(['Kredi'])
# Merkez Bankasının varlık ve yükümlülük kalemleri tanımlanıyor.
Merkez_Bankasi.make_asset_accounts(['Devlet Tahvili','Bankalara Verilen Krediler'])
Merkez_Bankasi.make_liability_accounts(['Nakit','Rezervler'])
#Başlangıç
Xbankasi.book(debit=[('Nakit',50), ('Altın',20)],credit=[('Sermaye',70)])
Ybankasi.book(debit=[('Nakit',50), ('Altın',20)],credit=[('Sermaye',70)])
MusteriA.book(debit=[('Nakit',100),('Altın',0)],credit=[('Sermaye',100)])
Merkez_Bankasi.book(debit=[('Devlet Tahvili',200)],credit=[('Nakit',200)])
#Başlangıç- Bilançolar
display_svg(SVG(Xbankasi.draw_balance_sheet("Banka X", width=500)))
display_svg(SVG(Ybankasi.draw_balance_sheet("Banka Y", width=500)))
display_svg(SVG(MusteriA.draw_balance_sheet("Müşteri A", width=500)))
display_svg(SVG(Merkez_Bankasi.draw_balance_sheet("Merkez Bankası", width=500)))
#Başlangıç- Para Arzı
print_money_stocks()
def test_tdd():
accounts = Ledger('equity')
accounts.make_stock_accounts(['cash', 'claims', 'inventory'])
accounts.make_flow_accounts(['expenditure', 'revenue', 'cost of goods sold', 'depreciation'])
accounts.book(
debit=[('cash', 50), ('claims', 50)],
credit=[('equity', 100)],
text="Start with owners' equity, partially paid in")
assert accounts._check_debit_eq_credit()
assert accounts.get_total_assets() == 100
assert accounts['cash'].get_balance() == (AccountSide.DEBIT, 50)
assert accounts['claims'].get_balance() == (AccountSide.DEBIT, 50)
assert accounts['equity'].get_balance() == (AccountSide.CREDIT, 100)
#print('Initial balance')
#accounts.print_balance_sheet()
#print('Some purchases and operating expenses')
accounts.book(debit=[('expenditure', 20)], credit=[('cash', 20)],text="General expenses")
assert accounts.get_total_assets() == 80, accounts.get_total_assets()
accounts.book(debit=[('inventory',20)],credit=[('cash',20)],text="Purchase of equipment")
accounts.book(debit=[('depreciation',2)],credit=[('inventory',2)],text="Depreciation")
#accounts.print_profit_and_loss()
#print('Balance sheet after first period')
accounts.book_end_of_period()
#accounts.print_balance_sheet()
assert accounts['equity'].get_balance() == (AccountSide.CREDIT, 78)
assert accounts['cash'].get_balance() == (AccountSide.DEBIT, 10),accounts['cash'].get_balance()
#print('Profitable sale')
accounts.book(debit=[('cash',40)],credit=[('revenue',40)],text="Sale of goods")
accounts.book(debit=[('cost of goods sold',10)],credit=[('inventory',10)],text="Sale of goods")
#accounts.print_profit_and_loss()
assert accounts['inventory'].get_balance() == (AccountSide.DEBIT, 8)
#print('Balance sheet after second period')
accounts.book_end_of_period()
#accounts.print_balance_sheet()
assert accounts['equity'].get_balance() == (AccountSide.CREDIT, 108)
MusteriC.make_asset_accounts(['Nakit','Mevduat','Banka Tahvili'])
MusteriC.make_liability_accounts(['Kredi'])
# Merkez Bankasının varlık ve yükümlülük kalemleri tanımlanıyor.
Merkez_Bankasi.make_asset_accounts(['Devlet Tahvili','Bankalara Verilen Krediler'])
Merkez_Bankasi.make_liability_accounts(['Nakit','Rezervler','Kamu Mevduatı']) # Kamu Mevduatı eklendi.
# Hazinenin varlık ve yükümlülük kalemleri tanımlanıyor.
Hazine.make_asset_accounts(['Kamu Mevduatı']) # Bu satır eklendi.
Hazine.make_liability_accounts(['Devlet Tahvili']) # Bu satır eklendi.
#Banka Y, M.B'dan Borç Alır.
Ybankasi.book(debit=[('Rezervler',100)],credit=[('Merkez Bankasına Borçlar',100)])
Merkez_Bankasi.book(debit=[('Bankalara Verilen Krediler',100)],credit=[('Rezervler',100)])
#Bilançolar
display_svg(SVG(Ybankasi.draw_balance_sheet("Banka Y", width=500)))
display_svg(SVG(Merkez_Bankasi.draw_balance_sheet("Merkez Bankası", width=500)))
#Para Arzı
print_money_stocks()
#kod2 Banka Y, Hazineden "Devlet Tahvili" alır.
#Banka Y, Hazineden "Devlet Tahvili" alır.
Ybankasi.book(debit=[('Devlet Tahvili',100)],credit=[('Rezervler',100)])
Hazine.book(debit=[('Kamu Mevduatı',100)],credit=[('Devlet Tahvili',100)])
Merkez_Bankasi.book(debit=[('Rezervler',100)],credit=[('Kamu Mevduatı',100)])
MusteriB.make_liability_accounts(['Kredi'])
MusteriC.make_asset_accounts(['Nakit','Mevduat','Banka Tahvili'])
MusteriC.make_liability_accounts(['Kredi'])
# Merkez Bankasının varlık ve yükümlülük kalemleri tanımlanıyor.
Merkez_Bankasi.make_asset_accounts(['Devlet Tahvili','Bankalara Verilen Krediler'])
Merkez_Bankasi.make_liability_accounts(['Nakit','Rezervler','Kamu Mevduatı']) # Kamu Mevduatı eklendi.
# Hazinenin varlık ve yükümlülük kalemleri tanımlanıyor.
Hazine.make_asset_accounts(['Kamu Mevduatı']) #Bu satırı ekledik.
Hazine.make_liability_accounts(['Devlet Tahvili']) #Bu satırı ekledik.
#Hazine’nin TCMB’den Borçlanması İşlemi
Hazine.book(debit=[('Kamu Mevduatı',100)],credit=[('Devlet Tahvili',100)]) #Bu satırı ekledik.
Merkez_Bankasi.book(debit=[('Devlet Tahvili',100)],credit=[('Kamu Mevduatı',100)]) #Bu satırı ekledik.
#Başlangıç- Bilançolar
display_svg(SVG(Hazine.draw_balance_sheet("Hazine", width=500)))
display_svg(SVG(Merkez_Bankasi.draw_balance_sheet("Merkez Bankası", width=500)))
#Başlangıç- Para Arzı
print_money_stocks()
#kod2 Hazine Müşteri A'ya ödeme yapar
#Hazine Müşteri A'ya ödeme yapar.
Hazine.book(debit=[('Sermaye',100)],credit=[('Kamu Mevduatı',100)])
Merkez_Bankasi.book(debit=[('Kamu Mevduatı',100)],credit=[('Rezervler',100)])
Xbankasi.book(debit=[('Rezervler',100)],credit=[('Müşteri A Mevduatı',100)])