Python 3 Deep Dive Part 4 Oop High Quality May 2026

def area(self): return self.width * self.height

class Car: def __init__(self, color, brand, model): self.color = color self.brand = brand self.model = model python 3 deep dive part 4 oop high quality

def get_balance(self): return self.__balance def area(self): return self

class BankAccount: def __init__(self, account_number, balance): self.__account_number = account_number self.__balance = balance python 3 deep dive part 4 oop high quality

class PayPalPaymentGateway(PaymentGateway): def process_payment(self, amount): print(f"Processing payment of ${amount} using PayPal.")

A Comprehensive Guide to Object-Oriented Programming in Python 3: A Deep Dive