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我正在制作一个程序,使用类帐户来打印accountA的月利息金额等.我遇到了getMonthlyInterestRate()和getMonthlyInterest定义的问题.这是迄今为止的计划:

Account.py

class Account:
    def __init__(self,id=0,balance=100.0,annualInterestRate=0.0):
        self.__id=id
        self.__balance=balance
        self.__annualInterestRate=annualInterestRate
    def getId(self):
        return self.__id
    def getBalance(self):
        return self.__balance
    def getAnnualInterest(self):
        return self.__annualInterestRate
    def setId(self,newid):
        self.__id=newid
    def setBalance(self,newbalance):
        self.__balance=newbalance
    def setAnnualInterestRate(self,newannualInterestRate):
        self.__annualInterestRate=newannualInterestRate
    def getMonthlyInterestRate(self,getAnnualInterest):
        return(getAnnualInterest(self)/12)
    def getMonthlyInterest(self,getBalance,getMonthly):
        return(getBalance(self)*getMonthlyInterestRate(self))

    def withdraw(self,amount):
        if(amount<=self.__balance):
            self.__balance=self.__balance-amount
    def deposit(self,amount):
        self.__balance=self.__balance+amount
    def __str__(self):
        return "Account ID : "+str(self.__id)+" Account Balance : "+str(self.__balance)+" Annual Interest Rate : "+str(self.__annualInterestRate)

下一个

文件test.py

from Account import Account

def main():
    accountA=Account(0,100,0)
    accountA.setId(1234)
    accountA.setBalance(20500)
    accountA.setAnnualInterestRate(0.375)
    print(accountA.__str__())
    accountA.withdraw(500)
    accountA.deposit(1500)
    print(accountA.__str__())
    print(accountA.getMonthlyInterest(accountA.getBalance(),accountA.getAnnualInterest())) 
main()

我无法弄清楚如何使getMonthlyInterestRate()和getMonthlyInterest()定义能够输出正确的输出,即:

Account ID …