James Stroud schrieb: > On Friday 28 October 2005 14:26, Stefan Sonnenberg-Carstens wrote: > >>Hi there, > > [..clip..] > >>Now, I do this: >> >>class T(object): >> def __init__(self,name='',port=80): >> self.name=name >> self.port=port >> def __getattribute__(self,key): >> if key=='somekey': >> return None > > [..snip..] > >>But, then surprise: >> >>> t = T(name="test123",port=443) >> >>> dir(t) >> >>[] >> >>What the hell is going wrong here ? > > > __getattribute__ is returning None in all cases and dir() is converting None > to []. > > Anyway, you should have done this: > > py> class T(object): > .... def __init__(self,name='',port=80): > .... self.name=name > .... def __getattribute__(self,key): > .... if key=='somekey': > .... return None > .... else: > .... return object.__getattribute__(self, key) > .... > py> t = T(name="test123",port=443) > py> dir(t) > ['__class__', '__delattr__', '__dict__', '__doc__', '__getattribute__', > '__hash__', '__init__', '__module__', '__new__', '__reduce__', > '__reduce_ex__', '__repr__', '__setattr__', '__str__', '__weakref__', 'name'] > > James > Sorry, but I am right that you explicitly call a "super" __getattribute__ on object and pass it a reference to self and the desired key ? Only asking for clarification ...
But why does that work under 2.4.1, and even under ActiveState's 2.4.1 ? Was that changed between those 2 releases ? Intuitive behaviour of __getattribute__ would be: If a key is not handeld in that function, return what you already got. Cheers, Stefan -- http://mail.python.org/mailman/listinfo/python-list
