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List:       pykde
Subject:    Re: [PyKDE] AttributeError: sipThis
From:       Phil Thompson <phil () river-bank ! demon ! co ! uk>
Date:       2002-06-28 9:02:34
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Stephen Green wrote:

> I get the following error when I'm trying to run the constructor of 
> QCanvasSprite from __setstate__() in my subclass.  I'm trying to use 
> pickle to save the class, so since Qt classes can't be pickled, I'm 
> using __getstate__() and __setstate__().
> 
> 
> File "/usr/lib/python2.2/pickle.py", line 592, in load
>    dispatch[key](self)
>  File "/usr/lib/python2.2/pickle.py", line 943, in load_build
>    setstate(value)
>  File "CanvasPoint.py", line 179, in __setstate__
>    QCanvasSprite.__init__(self, self.pixmapArray, canvas)
>  File "/usr/lib/python2.2/site-packages/qtcanvas.py", line 79, in __init__
>    libqtcanvasc.sipCallCtor(7,self,args)
> AttributeError: sipThis
> 
> 
> Does anybody know how this may be caused?


The usual cause is that you have a sub-class of a Qt class but haven't 
called the __init__ ctor of the Qt class in your sub-class's __init__ ctor.

Phil

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