Python 3 Deep Dive Part 4 Oop Repack Info

@property def year(self): return self._year

You can access the attributes and methods of the object using dot notation, like this: python 3 deep dive part 4 oop

Python’s Object-Oriented Programming (OOP) is often introduced via simple concepts: classes, objects, inheritance, and polymorphism. However, beneath this surface lies a highly sophisticated and flexible model. In this deep dive, we explore: @property def year(self): return self

class ElectricCar(Car): def __init__(self, color, model, year, battery_capacity): super().__init__(color, model, year) self.battery_capacity = battery_capacity and polymorphism. However

class MetaSingleton(type): _instances = {} def __call__(cls, *args, **kwargs): if cls not in cls._instances: cls._instances[cls] = super().__call__(*args, **kwargs) return cls._instances[cls]

With these, len(catalog), iteration, and membership worked naturally.

@year.setter def year(self, value): if not isinstance(value, int) or value < 0: raise ValueError("year must be a non-negative int") self._year = value