py设计一个Account类表示账户，自行设计该类中的属性和方法，并利用这个类创建一个账号为998866，余额为2000，年利率为4.5%的账户，然后从该账户中存入150，取出1500。打印出账号，余额，年利率，月利率，月息

以下是实现要求的代码：

class Account:
    def __init__(self, account_num, balance, annual_interest_rate):
        self.__account_num = account_num
        self.__balance = balance
        self.__annual_interest_rate = annual_interest_rate

    def get_account_num(self):
        return self.__account_num

    def get_balance(self):
        return self.__balance

    def get_annual_interest_rate(self):
        return self.__annual_interest_rate

    def set_annual_interest_rate(self, annual_interest_rate):
        self.__annual_interest_rate = annual_interest_rate

    def get_monthly_interest_rate(self):
        return self.__annual_interest_rate / 12

    def get_monthly_interest(self):
        return self.__balance * self.get_monthly_interest_rate()

    def withdraw(self, amount):
        self.__balance -= amount

    def deposit(self, amount):
        self.__balance += amount

# 创建账户
account = Account('998866', 2000, 0.045)

# 存入150
account.deposit(150)

# 取出1500
account.withdraw(1500)

# 打印账户信息
print('账号：', account.get_account_num())
print('余额：', account.get_balance())
print('年利率：', account.get_annual_interest_rate())
print('月利率：', account.get_monthly_interest_rate())
print('月息：', account.get_monthly_interest())

输出结果如下：

账号： 998866
余额： 650
年利率： 0.045
月利率： 0.00375
月息： 2.4375