Method __init__

src/_pytest/runner.py:470–480

(self)

    """

    def __init__(self) -> None:
        # The stack is in the dict insertion order.
        self.stack: Dict[
            Node,
            Tuple[
                # Node's finalizers.
                List[Callable[[], object]],
                # Node's exception, if its setup raised.
                Optional[Union[OutcomeException, Exception]],
            ],
        ] = {}

    def setup(self, item: Item) -> None:
        """Setup objects along the collector chain to the item."""