09.python类

范例，前面加__就设置成为private类型了self.__age = age

#coding:utf-8


class Student:
    '''学生类'''
    #类的属性(C++:静态成员变量)
    school = "myschool"

    def __init__(self, name, age):
        '''构造函数'''
        print "__init__()..."
        #对象的属性(C++：普通的成员属性)
        self.name = name
        self.age = age

    #(C++:普通成员方法) 在python中 对象的方法
    def showMe(self):
        print "__showme is called..."
        print self.name
        print self.age
        print Student.school

    #c++中静态方法和普通方法最大的区别 静态方法没有this指针,不能访问对象成员
    #python中类的方法
    @classmethod
    def getSchool(cls):
        #print self.name
        return cls.school

    #析构
    def __del__(self):
        print "__del___"


if __name__ == "__main__":

    print "************"
    s1 = Student("aaa", 18)
    s1.showMe()
    s1.age = 100
    s1.showMe()

    print "************"



    Student.school = "hust"

    s2 = Student("akali", 20)
    s2.showMe()

    
    print "************"
    print Student.getSchool()

输出：

__init__()...
__showme is called...
aaa
18
hust
__init()__
__showme is called...
akali
20
hust
***********
school
__del__
__del__