面向对象进阶

面向对象高级语法部分

通过 @staticmethod 装饰器即可把其装饰的方法变为一个 静态方法 ，什么是静态方法呢？其实不难理解，普通的方法，可以在实例化后直接调用，并且在方法里可以通过self.调用实例变量或类变量，但静态方法是不可以访问实例变量或类变量的，一个不能访问实例变量和类变量的方法，其实相当于跟类本身已经没什么关系了，它与类唯一的关联就是需要通过类名来调用这个方法。

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

    member_nums = 0def introduce(self):
        print("My name is %s,and I am %s year old." %(self.name,self.age))

    @staticmethod
    def talk():
        print("I like to study python")class Teacher(SchoolMember):
    def __init__(self,name,age,sex,course,salary):
        super(Teacher,self).__init__(name,age,sex)
        self.course = course
        self.salary = salary

    def Teaching(self):
        print("Teacher %s is teaching %s." %(self.name,self.course))



s1 = Teacher("alex",22,"Femal","python",10000)

print("before:",s1.member_nums)
SchoolMember.member_nums = 12print("before:",s1.member_nums)


s1.member_nums = 666     #是在类中重新生成一个变量

print("after:",s1.member_nums)
SchoolMember.member_nums = 12print("after:",s1.member_nums) 

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