OOP入門

OOP入門

オブジェクト指向プログラミングとは

オブジェクトとクラス

クラスの定義

class ClassName:
    def __init__(self, attribute1, attribute2):
        self.attribute1 = attribute1
        self.attribute2 = attribute2

    def method_name(self):
        # Code for method
        pass

オブジェクトの作成

# Defines the Car class
class Car:
    def __init__(self, make, model):
        self.make = make  # Sets the make of the car
        self.model = model  # Sets the model of the car

    def display_info(self):
        print("Car Make:", self.make)  # Prints the make of the car
        print("Car Model:", self.model)  # Prints the model of the car

# Creates an object of the Car class
my_car = Car("Toyota", "Corolla")

# Calls the display_info method of the object
my_car.display_info()

クラスの属性とメソッド

例: シンプルなクラスの作成

# Defines the Dog class
class Dog:
    def __init__(self, name, breed):
        self.name = name  # Sets the name of the dog
        self.breed = breed  # Sets the breed of the dog

    def bark(self):
        print(self.name + " says Woof!")  # Dog barks

# Creates an object of the Dog class
my_dog = Dog("Buddy", "Golden Retriever")

# Calls the bark method
my_dog.bark()

インスタンス変数とクラス変数

# Defines the Student class with a class variable
class Student:
    school = "XYZ High School"  # Class variable

    def __init__(self, name):
        self.name = name  # Instance variable

    def display_info(self):
        print(self.name + " attends " + Student.school)  # Prints student info

# Creates two objects of the Student class
student1 = Student("Alice")
student2 = Student("Bob")

# Calls the display_info method for both students
student1.display_info()
student2.display_info()

よくできました！