Coding Quiz - Implementing BankAccount Class

In this coding quiz, you are tasked with implementing a BankAccount class providing simple deposit and withdrawal functionality, and completing a function called solution.

The BankAccount class should contain a private variable __balance representing the account balance, and provide methods for depositing deposit and withdrawing withdraw funds.

The solution function should create a BankAccount object, perform deposits and withdrawals as specified, and return the final balance.

Copy
class BankAccount:
    # Write your code here

def solution(initial_balance, deposit_amount, withdraw_amount):
    # Write your code here
    return

---

• The _balance attribute should not be directly accessible from outside the class.

• You must implement the deposit (deposit) and withdrawal (withdraw) methods.

• When attempting to withdraw more than the current balance, the withdrawal should be refused and the current balance returned.

---

• Example 1: Initial balance 0, deposit 100, withdrawal 50 → Final balance 50

• Example 2: Initial balance 0, deposit 200, withdrawal 250 → Final balance 200 (withdrawal refused)

Copy