Python中方法定义与方法调用举例详解

class Car:
    def __init__(self, brand, model):
        self.brand = brand
        self.model = model

class Car:
    def __init__(self, brand, model):
        self.brand = brand
        self.model = model

    def start_engine(self):
        print(f"The {self.model} by {self.brand} has started.")

my_car = Car("Tesla", "Model S")
my_car.start_engine()

class Car:
    def __init__(self, brand, model):
        self.brand = brand
        self.model = model

    @classmethod
    def get_class_info(cls):
        print(f"Class: {cls.__name__}")

    @staticmethod
    def check_speed(speed):
        print(f"Speed: {speed} km/h")

# 创建Car对象
my_car = Car("Toyota", "Corolla")

# 调用类方法
Car.get_class_info()

# 调用静态方法
Car.check_speed(120)

class Car:
    def __init__(self, brand, model):
        self.brand = brand
        self.model = model

    def drive(self, distance, speed=60):
        print(f"Driving {distance} km at {speed} km/h")

    def drive_to(self, destination, **kwargs):
        print(f"Driving to {destination} with settings {kwargs}")

# 调用drive方法
my_car.drive(100)

# 调用drive方法并指定速度
my_car.drive(200, speed=80)

# 调用drive_to方法并传递关键字参数
my_car.drive_to("Beijing", distance=1000, speed=100)

class Calculator:
    def add(self, a, b):
        return a + b

    def multiply(self, a, b):
        return a * b

# 创建Calculator对象
calc = Calculator()

# 调用方法并获取返回值
result = calc.add(5, 3)
print(f"The sum is: {result}")

product = calc.multiply(4, 5)
print(f"The product is: {product}")