Le 28/10/2011 00:19, Steven D'Aprano a écrit :
What, you think it goes against the laws of physics that nobody thought
to mention it in the docs?<wink>
No but I'm expecting from Python documentation to mention the laws of
Python ...
But beside this, how to recognise classes whose object doesn't have a
__dict__ attribute ?
The same way as you would test for any other attribute.
hasattr(42, '__dict__')
False
OK but I'm talking about classes, not instances : 42 has no __dict__
attribute but, may be, 43 _has_ such attribute, who knows in advance ? ;)
Let'have a try :
>>> hasattr(43, '__dict__')
False
>>>
so we have proved by induction that no integer instance has a
dictionnary attribute ;)
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