Method _start

src/_pytest/capture.py:936–943

(self)

        self._captured_err: AnyStr = self.captureclass.EMPTY_BUFFER

    def _start(self) -> None:
        if self._capture is None:
            self._capture = MultiCapture(
                in_=None,
                out=self.captureclass(1, **self._config),
                err=self.captureclass(2, **self._config),
            )
            self._capture.start_capturing()

    def close(self) -> None:
        if self._capture is not None: