Problems with subclassing

[Gerrit]

Alexander Stante wrote:
> I have the following problem. I want to subclass from the pygame class
> Surface, but I can't get it working:
> 
> class sprite(Surface):
> def __init__(self, image_array, palette):
> "some code here"
> 
> when I want to create a instance with:
> 
> gfx.sprite(arrayi, palette)
> 
> 
> I get the following error message:
> TypeError: argument 1 must be sequence of length 2, not 100
> 
> It seems that the constructor of Surface is not overrided by the one in
> sprite, but why?

I think you want to override __new__, not __init__, if if could be
working at all that is. GvR wrote a lengthy introduction to this (among
other things) when Py 2.2 was released: google for "descriptor" and it
should end up somewhere.

It's also possible that Surface is not a viable baseclass at all. You
may want to consult the Pygame mailing list about that.

yours,
Gerrit.

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-- 
Gerrit Holl - 2nd year student of Applied Physics, Twente University, NL.
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