Question

You want to implement a class Wallet with a private attribute __amount that can be read from outside but only modified via a method add_money(). Which code snippet correctly achieves this?

Accepted Answer

class Wallet:
    def __init__(self):
        self.__amount = 0
    def add_money(self, value):
        self.__amount += value
    def get_amount(self):
        return self.__amount

Answer

class Wallet:
    def __init__(self):
        self.amount = 0
    def add_money(self, value):
        self.amount += value

Answer

class Wallet:
    def __init__(self):
        self.__amount = 0
    def add_money(self, value):
        self.amount += value
    def get_amount(self):
        return self.__amount

Answer

class Wallet:
    def __init__(self):
        self.__amount = 0
    def add_money(self, value):
        self.__amount = value
    def get_amount(self):
        return self.__amount

You want to implement a class Wallet with a private attribute __amount that can be read from outside but only modified via a method add_money(). Which code snippet correctly achieves this?

Step 1: Private attribute initialization

Step 2: Controlled modification

Step 3: Provide read access

Final Answer:

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