Method class_init

traitlets/traitlets.py:1291–1293

(self, cls: type[HasTraits], name: str | None)

        self.trait_name = name

    def class_init(self, cls: type[HasTraits], name: str | None) -> None:
        super().class_init(cls, name)
        cls._trait_default_generators[self.trait_name] = self


class HasDescriptors(metaclass=MetaHasDescriptors):