Method class_init

traitlets/traitlets.py:459–470

Part of the initialization which may depend on the underlying HasDescriptors class. It is typically overloaded for specific types. This method is called by :meth:`MetaHasDescriptors.__init__` passing the class (`cls`) and `name` under which the descriptor ha

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

    this_class: type[HasTraits] | None = None

    def class_init(self, cls: type[HasTraits], name: str | None) -> None:
        """Part of the initialization which may depend on the underlying
        HasDescriptors class.

        It is typically overloaded for specific types.

        This method is called by :meth:`MetaHasDescriptors.__init__`
        passing the class (`cls`) and `name` under which the descriptor
        has been assigned.
        """
        self.this_class = cls
        self.name = name

    def subclass_init(self, cls: type[HasTraits]) -> None:
        # Instead of HasDescriptors.setup_instance calling