python - 账户存款和取款

Question

我的代码询问用户是否想通过在菜单上输入数字 (5) 或数字 (6) 从已输入的余额中存入或提取金额。我认为我的代码可以工作，但是当我存款或取款并在菜单上输入 (1) 来检查我的余额时，它给我的是原始余额，而不是取款或存款金额。我还以为我的月利率和利率会起作用，但事实并非如此。我已经编写了计算以获得月利率，但当我想显示它们时它似乎也不起作用。

主模块:

from Account import Account

id = float(input("Enter User ID: "))
annual_interest_rate = float(input("Enter Interest Rate: "))
balance = float(input("Enter balance: "))

def apply_actions(action, account):
    if action == 0:      # display ID
        print(f"Your id is {id}")
    elif action == 1:    # display balance
        print(f"Your balance is {balance}")
    elif action == 2:     # display annual interest rate
        print(f"Your Annual Interest Rate is {annual_interest_rate}")
    elif action == 3:     # display monthly interest rate
        print(f"Your monthly interest rate is {Account.monthly_interest_rate}")
    elif action == 4:     # display monthly interest
        print(f"Your Monthly Interest is {Account.get_monthly_interest}")
    elif action == 5:     # ask for money to withdraw
        to_withdraw = float(input("How much money do you want to Withdraw?"))
        account.withdraw(to_withdraw)
    elif action == 6:     # ask for money to deposit
        amount = float(input("How much money do you want to deposit?"))
        account.deposit(amount)
    elif action == 7:     # ask to exit
        exit(7)
    else:
        print("Bad index")

if __name__ == '__main__':
    acc = Account(id, balance, annual_interest_rate)

    actions = ["Display ID",
               "Display Balance",
               "Display Annual Interest Rate",
               "Display Monthly Interest Rate",
               "Display Monthly Interest",
               "Withdraw Money",
               "Deposit Money",
               "Exit"]
    while True:
        choice = int(input("Choose index in " + str(list(enumerate(actions)))))
        apply_actions(choice, acc)

帐户.py

class Account:

    def __init__(self, id, balance, annual_interest_rate):
        self.id = id
        self.balance = balance
        self.annual_interest_rate = annual_interest_rate


    def monthly_interest_rate(self):
        return self.annual_interest_rate / 12

    def id(self):
        return self.id

    def balance(self):
        return self.balance

    def annual_interest_rate(self):
        return self.annual_interest_rate


    def get_monthly_interest(self):
        return self.balance * self.monthly_interest_rate

    def withdraw(self, amount):
        if self.balance < amount:
            raise ValueError(f"Overdraft, balance less than {amount}")

        self.balance -= amount

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

Answer 1

对此感到抱歉。我在打电话时犯了一个错误。

这应该可以修复弹出的错误。

class Account:

    def __init__(self, id, balance, annual_interest_rate):
        self.id = id
        self.balance = balance
        self.annual_interest_rate = annual_interest_rate


    def monthly_interest_rate(self):
        return self.annual_interest_rate / 12

    def id(self):
        return self.id

    def balance(self):
        return self.balance

    def annual_interest_rate(self):
        return self.annual_interest_rate


    def get_monthly_interest(self):
        # NOTE: You need the () after self.balance to tell Python to use the method and not the variable, or after self.monthtly_interest_rate. Otherwise, Python takes this as a function instead of a value.
        return self.balance() * self.monthly_interest_rate

    def withdraw(self, amount):
        if self.balance < amount:
            raise ValueError(f"Overdraft, balance less than {amount}")

        self.balance -= amount

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

id = float(input("Enter User ID: "))
annual_interest_rate = float(input("Enter Interest Rate: "))
balance = float(input("Enter balance: "))

def apply_actions(action, account):
    if action == 0:      # display ID
        print(f"Your id is {account.id}")
    elif action == 1:    # display balance
        print(f"Your balance is {account.balance}")
    elif action == 2:     # display annual interest rate
        print(f"Your Annual Interest Rate is {account.annual_interest_rate}")
    elif action == 3:     # display monthly interest rate
        print(f"Your monthly interest rate is {account.monthly_interest_rate()}")
    elif action == 4:     # display monthly interest
        print(f"Your Monthly Interest is {account.get_monthly_interest()}")
    elif action == 5:     # ask for money to withdraw
        to_withdraw = float(input("How much money do you want to Withdraw?"))
        account.withdraw(to_withdraw)
    elif action == 6:     # ask for money to deposit
        amount = float(input("How much money do you want to deposit?"))
        account.deposit(amount)
    elif action == 7:     # ask to exit
        exit(7)
    else:
        print("Bad index")

if __name__ == '__main__':
    acc = Account(id, balance, annual_interest_rate)

    actions = ["Display ID",
               "Display Balance",
               "Display Annual Interest Rate",
               "Display Monthly Interest Rate",
               "Display Monthly Interest",
               "Withdraw Money",
               "Deposit Money",
               "Exit"]
    while True:
        choice = int(input("Choose index in " + str(list(enumerate(actions)))))
        apply_actions(choice, acc)