Method from_string

traitlets/traitlets.py:2657–2660

(self, s: str)

        return _validate_bounds(self, obj, value)  # type:ignore[no-any-return]

    def from_string(self, s: str) -> G:
        if self.allow_none and s == "None":
            return None  # type:ignore[return-value]
        return int(s)  # type:ignore[return-value]

    def subclass_init(self, cls: type[t.Any]) -> None:
        pass  # fully opt out of instance_init