Method item_from_string

traitlets/traitlets.py:3570–3571

(s: str, index: int | None = None)

        else:
            # backward-compat: allow item_from_string to ignore index arg
            def item_from_string(s: str, index: int | None = None) -> T | str:
                return self.item_from_string(s)

        return self.klass(  # type:ignore[call-arg]
            [item_from_string(s, index=idx) for idx, s in enumerate(s_list)]