第六节

Posted 2020-09-30 酷酷的狐狸

类和方法

1.类的作用及析构函数

class role:
    def __init__(self,name,age,life_valie):　　#类的初始化变量
        self.name = name
        self.age = age
        self.__life_value = life_valie

    def __del__(self):
        print("this is 析构函数")

    def got_shot(self):
        self.__life_value -= 50　　#定义私有变量，只能在类的内部调用

    def show_life_value(self):　　　　
        print(self.__life_value)　　#私有变量可以通过调用某些方法来取出

r1=role("jack",18,100)
print(r1.name)
r1.got_shot()
r1.show_life_value()

运行结果：
jack
50
this is 析构函数


2.父类和子类

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

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

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

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

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

m1=man("jack",25)
m1.sleep()
m2=woman("mary",24)
m2.sleep()
运行结果：
jack is sleeping
man jack is sleeping
woman mary is sleeping