Using variable from one method in another method in Python

Question

In Python, I am trying to assigne a value to a variable in one method and then add a another value to the same variable in another method. Both methods are within the same class. Here is what I am trying to achieve:

class Account_Balance(Account_General):
    def __init__(self, first_name, middle_name, last_name, PIN, DoB, city, address, phone_number, email):
        super().__init__(first_name, middle_name, last_name, PIN, DoB, city, address, phone_number, email)
    
    def account_balance(self):
        self.balance = 10.0 
        return self.balance
    
    def account_deposite(self, amount):
        self.amount = amount
        self.balance += self.amount

The output is: Attribute Error: 'Account_Balance' object has no attribute 'balance'

Where do you think I am getting it wrong? Thank you!

BTables · Accepted Answer · 2021-08-22 05:11:48Z

1

You're calling account_deposite before self.balance has been initialized. Attributes like this should be declared and initialized in __init__. Try this

class Account_Balance(Account_General):
    def __init__(self, first_name, middle_name, last_name, PIN, DoB, city, address, phone_number, email):
        super().__init__(first_name, middle_name, last_name, PIN, DoB, city, address, phone_number, email)
        self.balance = 0.0
    
    def account_balance(self):
        self.balance = 10.0 
        return self.balance
    
    def account_deposite(self, amount):
        self.amount = amount
        self.balance += self.amount

answered Aug 22, 2021 at 5:11

BTables

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