Method link

traitlets/traitlets.py:401–409

(self)

        self.link()

    def link(self) -> None:
        try:
            setattr(
                self.target[0],
                self.target[1],
                self._transform(getattr(self.source[0], self.source[1])),
            )
        finally:
            self.source[0].observe(self._update, names=self.source[1])

    @contextlib.contextmanager
    def _busy_updating(self) -> t.Any: