treex.Nothing

Source code in treeo/types.py

class Nothing:
    def tree_flatten(self):
        return (), None

    @classmethod
    def tree_unflatten(cls, _aux_data, children):
        return cls()

    def __repr__(self) -> str:
        return "Nothing"

    def __eq__(self, o: object) -> bool:
        return isinstance(o, Nothing)