[Pyrex] Inheritance for extension types

[Konrad Hinsen]

On Thursday 12 February 2004 13:34, q q wrote:

> This does not compile and i get a traceback from
> Python.

Your example compiles fine for me, and I can import the resulting module. I 
can also create instances of type A. Creating an instance of type B causes a 
crash though.

I guess the reason is that you are calling a superclass method within __new__. 
When the method __new__ is called, the object is not yet in a consistent 
internal state, which means that some operations are not allowed. I don't 
know the details because I don't need to - unless you have a good reason to 
implement __new__, just implement (and override) __init__. In fact, it you 
replace __new__ by __init__ in your code, you should get everything working 
as expected.
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