PYTHON Free Section Starter Challenge 30 min

10. Object-Oriented Python: Classes, Encapsulation & init

Overview: Model domain entities with classes, instance variables, private attributes, and custom methods.

Concept & Syntax Guide

Classes are blueprints for creating objects. The __init__ constructor initializes instance attributes attached to self. Prefixing attributes with a double underscore (e.g. __balance) invokes name mangling for private encapsulation.

Hands-On Practice Exercise

Construct BankAccount Object

Instantiate BankAccount with owner "Astro User" and deposit 5000, then print account summary.

Target Output: Account Holder: Astro User, Balance: ₹5000

Need a hint? Click here to reveal

Hint: Check syntax carefully and make sure your code contains: Account Holder: Astro User, Balance: ₹5000

PYTHON Code Editor

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class BankAccount:
    def __init__(self, owner, initial_balance=0):
        self.owner = owner
        self._balance = initial_balance

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

acc = BankAccount("Astro User", 0)
acc.deposit(5000)
print(f"Account Holder: {acc.owner}, Balance: ₹{acc._balance}")

10. Object-Oriented Python: Classes, Encapsulation & __init__

Concept & Syntax Guide

Construct BankAccount Object

10. Object-Oriented Python: Classes, Encapsulation & init