Torsten Landschoff, 23.04.2013 10:06:
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?
@cython.final cdef class ExtType: ... You can also declare a class @cython.internal to prevent it from showing up in the module dict. Stefan