On 04/23/2013 08:01 AM, Stefan Behnel wrote: > Greg Ewing, 23.04.2013 01:16: >> Only if subclassing of Slot and Context are forbidden. > Right. Subtypes of a non-GC type can happily add attributes and start > supporting cyclic garbage collection, including Python subclasses. So this > only applies to "final" types and builtins. Not entirely uncommon, > especially in the "keep this private thing alive until all referrers have > died" use case, but I's say this restriction drops the priority a bit. > Does Cython have an equivalent of the "final class DoNoExtend { ... }" of the Java world? In any case, Greg has a good point. I seriously did not think about it just because I did not plan to derive from those classes.
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