Best for: Intermediate Python developers who want to truly understand OOP in Python, not just memorize syntax.
Not for: Absolute beginners (you need solid Python basics first).
@abstractmethod
def perimeter(self):
pass
def __post_init__(self):
if self.age < 0:
raise ValueError("Age negative")
class Car: def init(self): self.engine = Engine() self.wheels = Wheels() python 3 deep dive part 4 oop
def __init__(self, quantity, price):
self.quantity = quantity
self.price = price