第六周练习 part2 --- 继承

# class People:  # 经典类
class People(object):  # 新式类, super 也是新式类的写法
    def __init__(self,name,age):
        self.name = name
        self.age = age
        self.friends = []
        print("class People下的__init__ is running.")

    def eat(self):
        print("%s is eating..." % self.name)

    def talk(self):
        print("%s is talking..." % self.name)

    def sleep(self):
        print("%s is sleeping..." % self.name)


class Relation(object):
    def __init__(self, name):
        self.name = name
        print(self.name)

    def make_friends(self, somebody):
        print('%s is making friends with %s.' % (self.name, somebody.name))
        self.friends.append(somebody)  # 将这个人的地址存在 People 下的 friends 里，真正建立起联系


# class Man(Relation, People):  # 调用父类是只走第一个位置的类的，Relation 里的__init__参数不对，那就会报错
class Man(People, Relation):
    def __init__(self, name, age, money):

        # People.__init__(self, name, age)  # 继承自 People. or...
        super(Man, self).__init__(name, age)  # 与上句作用相同

        self.money = money
        print('class Man 下的 __init__ is running.')

    def piao(self):
        print("%s is piaoing ..... 20s later....done." % self.name)

    # Overrides the sleep method in Class People
    def sleep(self):
        People.sleep(self)  # 调用重构前的功能
        print("man is sleeping ")  # 添加新功能


class Woman(People, Relation):
    def __init__(self, name, age, weight):
        super(Woman, self).__init__(name, age)
        print('class Woman 下的 __init__ is running.')

    def eat(self):
        print('%s is eating.' % self.name)

t = Man('Tony', '23', 22334)  # 此步叫初始化，会将参数传给相应类中的__init__()并运行
p = Woman('Sara', '23', 37822)
# t.sleep()
t.make_friends(p)
print(t.friends[0].name)  # 存地址而不直接存名字，好处是即使改了名字，也仍能指到同一个人