如何访问私有方法

# -*- coding: utf-8 -*-
#python 27
#xiaodeng
#如何访问私有方法


class Securityp(object):
    
    def __my(self):
        print "Bet you can't see me..."

b=Securityp()
print dir(b) #打印出所有的方法和属性等信息
print b.__dict__  #没有打印结果
b._Securityp__my()
'''
['_Securityp__my', '__class__', '__delattr__', '__dict__', '__doc__', '__format__', '__getattribute__', '__hash__', '__init__', '__module__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__']
{}
Bet you can't see me...
'''