设计以下类 .飞机 发动机 .鸟 翅膀 .火箭 空气动力 .热气球 氢气 通过多态,演示各种飞行行为

以下是对应的类设计：

class Vehicle:
    def fly(self):
        pass

class Airplane(Vehicle):
    def __init__(self, engine):
        self.engine = engine

    def fly(self):
        print("Airplane is flying with the engine.")

class Bird(Vehicle):
    def __init__(self, wings):
        self.wings = wings

    def fly(self):
        print("Bird is flying with its wings.")

class Rocket(Vehicle):
    def __init__(self, air_thrust):
        self.air_thrust = air_thrust

    def fly(self):
        print("Rocket is flying with the air propulsion.")

class HotAirBalloon(Vehicle):
    def __init__(self, gas):
        self.gas = gas

    def fly(self):
        print("Hot air balloon is flying using hydrogen gas.")

# 示例使用

engine = "Jet Engine"
airplane = Airplane(engine)
airplane.fly()

wings = "Feathers"
bird = Bird(wings)
bird.fly()

air_thrust = "Rocket Engine"
rocket = Rocket(air_thrust)
rocket.fly()

gas = "Hydrogen"
hot_air_balloon = HotAirBalloon(gas)
hot_air_balloon.fly()

在上面的示例代码中，定义了一个基类 `Vehicle`，它有一个 `fly` 方法。然后分别定义了 `Airplane`、`Bird`、`Rocket` 和 `HotAirBalloon` 这四个类，它们都继承自 `Vehicle`。每个子类都实现了 `fly` 方法，分别展示了不同的飞行行为。通过多态，我们可以调用相同的方法名 `fly`，但根据对象的不同，会执行对应类中的方法。