class BankAccount:

	
    def __init__(self, name, start_balance, currency):

    	self.__name = str(name)
        self.__start_balance = balance
        self.__currency = currency

        if balance < 0:
        	raise ValueError("Start balance must be > 0.")
        if not isinstance(balance, int):
        	raise TypeError
    def depposit(self, amount):
    	self.__balance += amount
    def balance:


    


       