from abc import ABC, abstractmethod
def area(self): return self.width * self.height
class Rectangle(Shape): def __init__(self, width, height): self.width = width self.height = height
Abstract classes and interfaces are used to define a blueprint for other classes to follow. An abstract class is a class that cannot be instantiated on its own and is meant to be inherited by other classes. python 3 deep dive part 4 oop high quality
Inheritance is a mechanism in OOP that allows one class to inherit the properties and behavior of another class. The child class inherits all the attributes and methods of the parent class and can also add new attributes and methods or override the ones inherited from the parent class.
class Shape: def area(self): pass
def start_engine(self): print("The engine is started.") from abc import ABC, abstractmethod def area(self): return
In conclusion, Python 3 provides an excellent platform for implementing OOP principles. By understanding the concepts of classes and objects, inheritance, polymorphism, encapsulation, and abstract classes and interfaces, developers can create robust, scalable, and maintainable software systems. By following best practices and using design patterns, developers can write high-quality code that is easy to understand, modify, and extend.
def area(self): return 3.14 * self.radius ** 2
my_electric_car = ElectricCar("Blue", "Tesla", "Model S", 100) print(my_electric_car.color) # Output: Blue my_electric_car.start_engine() # Output: The engine is started. my_electric_car.charge_battery() # Output: The battery is charging. The child class inherits all the attributes and
A Comprehensive Guide to Object-Oriented Programming in Python 3: A Deep Dive
account = BankAccount("1234567890", 1000) print(account.get_balance()) # Output: 1000 account.deposit(500) print(account.get_balance()) # Output: 1500
In Python 3, a class is a template that defines the properties and behavior of an object. A class is essentially a blueprint or a design pattern that defines the characteristics of an object. An object, on the other hand, is an instance of a class, which has its own set of attributes (data) and methods (functions).
def get_balance(self): return self.__balance
class Car: def __init__(self, color, brand, model): self.color = color self.brand = brand self.model = model