python 类中 __dict__ 方法 和 dir() 方法的区别

代码:

#!/usr/bin/env python
#-*- coding:utf-8 -*-


class A(object):

    def __init__(self,a,b):
        self.a = a
        self.b = b
        self.ss = (1, 2)
        self.ll = [1, 2]

    def add(self):
        return (1,)


# 测试
if __name__ == "__main__":

    demo = A(1, 2)
    
    print('