Python Object-oriented

Properties of the class

• Packaging
• Inherited
• Properties of a polymorphic definition class
• Define directly inside a class
• Define a class with python in the constructor

#!/usr/bin/env python# -*- coding: utf-8 -*-__author__ = ‘wangke‘__time__ = ‘2018-01-26 15:47‘class Programer(object):    hobby = ‘Play Computer!‘    def __init__(self, name, age, weight):        self.name = name        self._age = age        self.__weight = weight    def get_weight(self):        return self.__weightif __name__ == ‘__main__‘:    Programer = Programer(‘xiaoke‘,‘25‘,88) #实例化对象    print(dir(Programer))    print(Programer.__dict__) #打印从构造函数获得的属性    print(Programer.get_weight())    # print(Programer.__weight) 直接获取会出错，使用了__定义的属性相当于私有属性，但是非要访问可以通过下面的方式访问到    print(Programer._Programer__weight)

Execution results are as follows

Python Object-oriented