设计模式 - 帮我看看下面的代码算是python策略模式的实现吗

Question

最近在看head first设计模式，第一章时策略模式，但我对java代码一窍不通，根据文字描述用python实现了一下，不知道是否正确，大家帮我看看，谢谢

#!/usr/bin/env python
# encoding: utf-8

class FlyBehavior(object):

    def fly(self):
        pass


class QuackBehavior(object):

    def quack(self):
        pass

class FlyWithWings(FlyBehavior):
    def fly(self):
        print("can fly")

class FlyNoWay(FlyBehavior):
    def fly(self):
        print("can't fly")

class Quack(QuackBehavior):
    def quack(self):
        print("quacccccck")

class Squeak(QuackBehavior):
    def quack(self):
        print("squeaaaaak")

class MuteQuack(QuackBehavior):
    def quack(self):
        print("mute")

class Duck(object):
    def __init__(self, *behavior):
        self.flyBehavior, self.quackBehavior = behavior
    def display(self):
        pass

    def performFly(self):
        "{0}".format(self.flyBehavior.fly())

    def performQuack(self):
        "{0}".format(self.quackBehavior.quack())

class ModelDuck(Duck):
    def __init__(self):
        super(ModelDuck, self).__init__(FlyNoWay(), MuteQuack())

m1 = ModelDuck()
m1.performFly()

Answer 1

Yes, typical strategy pattern implementation. Many strategy patterns will have default strategies. If your implementation does not include them, you can consider adding them.