[Stackless] Inheritence bug

Christian Tismer tismer at stackless.com
Thu Jan 8 15:38:20 CET 2004


Tom Locke wrote:

> Am I not supposed to inherit from channel? 
> 
> ----------
> class MyChan(stackless.channel):
>     def __init__(self, x): pass
> 
> x = MyChan(1)
> 
> TypeError: channel() takes exactly 0 arguments (1 given)
> ------------

Sure you are.
But since you change the call arguments of __init__,
you also change the arguments of __new__, but the
underlying channel class doesn'Ät want a paramemert.
So you are supposed to also supply a __new__ method
that does an explicit __new__ call without the extra x.

 >>> class C(channel):
... 	def __init__(self, x):
... 		pass
... 	def __new__(self, x):
... 		return channel.__new__(self)
... 	
 >>> c=C(5)
 >>>

ciao - chris

-- 
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