Python 3 Deep Dive Part 4 Oop High Quality Apr 2026

account = BankAccount("1234567890", 1000) print(account.get_balance()) # Output: 1000 account.deposit(500) print(account.get_balance()) # Output: 1500

print(rectangle.area()) # Output: 20 print(circle.area()) # Output: 28.26 python 3 deep dive part 4 oop high quality

stripe_gateway = StripePaymentGateway() paypal_gateway = PayPalPaymentGateway() account = BankAccount("1234567890", 1000) print(account

class PaymentGateway(ABC): @abstractmethod def process_payment(self, amount): pass account = BankAccount("1234567890"

class Rectangle(Shape): def __init__(self, width, height): self.width = width self.height = height

Encapsulation is the concept of hiding the internal implementation details of an object from the outside world. This is achieved by using access modifiers such as public, private, and protected.

class BankAccount: def __init__(self, account_number, balance): self.__account_number = account_number self.__balance = balance