Question

我找不到任何有此问题的源代码，所以我很困惑我的代码没有参考点。基本上，我想做的是从get_interest_rate（）获得回报利息，并将其放入get_interest（）的括号中。我不太确定是否有可能？我一直在互联网上寻找可以找到如何执行此操作的资源，但找不到任何东西。谢谢！

class BankAccount:
    def __init__(self, a, b, c):
        self.account = "%d - %d - %d" %(a, b, c)
        self.balance = 0

    def get_account(self):
        print("Your account number is", self.account)
        return self.account

    def get_balance(self):
        print("You have %.2f" %self.balance)
        return self.balance

    def deposit(self):
        dep = float(input("Enter deposit amount: "))
        self.balance = self.balance + dep

    def withdraw(self):
        while True:
            draw = float(input("Enter withdrawal amount: "))
            if draw > self.balance:
                print("You have insufficient amount to withdraw")
                continue
            else:
                break
        self.balance = self.balance - draw
        print("You are left with %.2f" %self.balance)
        return self.balance

    def get_interest_rate(self):
        interest = 0
        if self.account[0] == '1':
            interest = 0.01
            print("Your interest rate is", interest)


       elif self.account[0] == '0':
            interest = 0.05
            print("Your interest rate is", interest)

        return interest

    def get_interest(self, interest):
        earned = self.balance * interest
        print("Your interest earned is %.2f" % earned)
        return earned


account1 = BankAccount(00, 12345, 11)
account1.get_account()
account1.deposit()
account1.get_balance()
account1.withdraw()
account1.get_interest_rate()
account1.get_interest()

这是我一直收到的输出/错误：

Your interest rate is 0.05
Traceback (most recent call last):
  File "/Users/kovitan/PycharmProjects/Object-Oriented Programming/venv/Practical 2/Qn 4.py", line 51, in <module>
    account1.get_interest()
TypeError: get_interest() missing 1 required positional argument: 'interest'

Answer 1

要返回account1.get_interest(..)来呼叫account1.get_interest_rate()，请输入：

account1.get_interest(account1.get_interest_rate())

Answer 2

您可以尝试类似的方法吗？

class Account:
    def __init__(self, balance):
        self.account = ['0']
        self.balance = balance

    def get_interest_rate(self):
        interest = 0
        if self.account[0] == '1':
            interest = 0.01
            print("Your interest rate is", interest)

        elif self.account[0] == '0':
            interest = 0.05
            print("Your interest rate is", interest)
        return interest

    def get_interest(self, interest):
        earned = self.balance * interest
        return "Your interest earned is %.2f" % earned


account = Account(1000)
print(account.get_interest(account.get_interest_rate()))

使用返回值放入另一个函数的括号

2 个答案: