组合||抽象类||多态||鸭子类型

Posted 2020-10-27 Mr。yang

组合

软件重用的重要方式除了继承之外还有另外一种方式，即：组合

组合指的是，在一个类中以另外一个类的对象作为数据属性，称为类的组合

class People:
    def __init__(self,name,age,sex):
        self.name = name
        self.age  = age
        self.sex  = sex

class Renwen(People):
    def __init__(self,name,age,sex,weapon):
        super().__init__(name,age,sex)
        self.weapon = weapon
        self.attribute = [] #锐雯的属性列表
    def skill(self):
        print(‘%s is skill‘%self.name)

class Teacher(People):
    def __init__(self,name,age,sex,level):
        super().__init__(name,age,sex)
        self.level = level

    def teach(self):
        print("%s is teaching" %self.name)

class Attribute:
    def __init__(self,damage,spell,armor):
        self.danage = damage
        self.spell = spell
        self.armor =armor

    def tell_info(self):
        print("生命值:%s,法术:%s,护甲:%s"%(self.danage,self.spell,self.armor))

rewen = Renwen(‘锐雯‘,22,‘female‘,"砍刀")
teacher1 =Teacher(‘林书行‘,30,‘male‘,20)

a = Attribute(200,20,100)#创建属性对象

rewen.attribute.append(a) #添加属性值

#打印出属性值
for i in rewen.attribute:
    i.tell_info()

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