#-*- coding: UTF-8 -*-
class TestClass(object):
    def __init__(self):
        self.X = 10
        self._Y = 10
        self.__Z = 10
    
    def GetX(self):
        if hasattr(self, "X"):
            print "X: True"
    
    def GetY(self):
        if hasattr(self, "_Y"):
            print "_y: True"
    
    def GetZ(self):
        if hasattr(self, "__Z"):  #私有變數，通過物件無法訪問，返回False，實際屬性存在
            print "__Z: False"
        elif hasattr(self, "_TestClass__Z"):
            print "__Z: True"

if __name__ == '__main__':
    print "start main"
    test = TestClass()
    test.GetX()
    test.GetY()
    test.GetZ()