如何在初始余額上添加金額后列印新余額？

我正在學習 Python，并使用了一個簡單的 ATM 代碼。我已經對其進行了測驗，下游一切正常——我的意思是：

1. 初始化課程時，我有幾個選項 - 余額、存款、取款、退出。
2. 當我運行 Balance 時，我會收到設定的金額。

2.1. 我選擇存款 - 它顯示了此人帳戶中的新金額

2.2. 當我使用提款時，我也會得到正確的金額

3. 問題 - 當我存款然后輸入余額時，我得到了用戶的初始余額 - 這是預期的。如何在存款后更改代碼并選擇余額以顯示新余額？

這是否可以在不使代碼復雜化的情況下執行？

編碼：

class User:

    def __init__(self):
        self.fname = input('Enter your first name: ')
        self.lname = input('Enter your last name: ')
        self.age = input('Enter your age: ')

    def user_details(self):
        print('Details:')
        print(f"First Name: {self.fname}")
        print(f"Last Name: {self.lname}")
        print(f"User age: {self.age}")

    def deposit_money(self):
        self.deposit_amount = 100
        return self.deposit_amount
    
    def withdraw_money(self, withdraw_amount):
        self.withdraw_amount = withdraw_amount
        return self.withdraw_amount
    
class ATM:
    
    atm_balance = 10000

    def __init__(self):
        self.machine_balance = self.atm_balance
    
    def user_bank_balance(self):
        self.user_balance = 300
        print ('Your current balance is ${}'.format(self.user_balance))

    def deposit_atm(self, user):
        self.total_savings = 0
        deposit_m = float(input('How much do you want to deposit? '))
        if deposit_m > user.deposit_money():
            print('You do not have enough money to deposit')
        elif deposit_m == user.deposit_money():
            print('Amount deposited: ${}'.format(deposit_m))
        self.total_savings = self.user_balance   deposit_m
        print('Total amount in your account: ${}'.format(self.total_savings))

    def withdraw_atm(self):
        savings_left = 0
        sum_to_withdraw = float(input('How much do you want to withdraw? '))
        if self.atm_balance > sum_to_withdraw and self.user_balance > sum_to_withdraw:
            savings_left = self.total_savings - sum_to_withdraw
            print("You have withdraw {}".format(sum_to_withdraw))
            print('You balance is {}'.format(savings_left))
        elif self.atm_balance > sum_to_withdraw and self.user_balance < sum_to_withdraw:
            print('Daily limit eceeded')
        else:
            print('ATM out of service')



class ATMUsage:
    @classmethod
    def run(cls):
        
        print('Bulbank ATM')
        instructions = print(""" 
        Type 'Balance' to check your current balance,
        Type  'Deposit' to deposit amount into your account,
        Type  'Withdraw' to withdraw from your account,
        Type  'Exit' to exit from your account,
            """)
        active = True
        user1 = User()
        atm1 = ATM()
        user1.user_details()
        while active:
            selection = input("What would you like to do: 'Balance', 'Deposit', 'Withdraw', 'Exit': ") 
            if selection == 'Balance'.lower():
                atm1.user_bank_balance()
            elif selection == 'Deposit'.lower():
                atm1.deposit_atm(user1)
            elif selection == "Withdraw".lower():
                atm1.withdraw_atm()
            elif selection == 'Exit'.lower():
                print('Thanks for passing by. Have a good one!')
                break
            else:
                print('Wrong selection. Please, try again')


ATMUsage.run()

uj5u.com熱心網友回復：

那是因為每次呼叫該user_bank_balance方法時，都會將user_balance屬性設定為 300。因此無論您對 進行了哪些更新user_balance，無論何時呼叫該user_bank_balance方法，您都會得到 300

class ATM:

    atm_balance = 10000

    def __init__(self):
        self.machine_balance = self.atm_balance
        self.user_balance = 300

    def user_bank_balance(self):
        print ('Your current balance is ${}'.format(self.user_balance))

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