private class members and hasattr

[Dragos Chirila]

Hi

I have the following class:

class PropTest:

    def __init__(self):
        self.prop1 = 1
        self._prop2 = 2
        self.__prop3 = 3

    def testprops(self):
        print 'has prop1 %s' % hasattr(self, 'prop1')
        print 'has _prop2 %s' % hasattr(self, '_prop2')
        print 'has __prop3 %s' % hasattr(self, '__prop3')


and the following test lines:

a = PropTest()
a.testprops()

The output of this is:

has prop1 1
has _prop2 1
has __prop3 0

Why hasattr method doesn't return 1(true) for private member '__prop3' ??

I tested it with Python 2.2.1 and 2.1.3 .

Thanks

Dragos