Method once

playwright/_impl/_sync_base.py:128–132

The same as ``self.on``, except that the listener is automatically removed after being called.

(self, event: Any, f: Any)

        self._impl_obj.on(event, self._wrap_handler(f))

    def once(self, event: Any, f: Any) -> None:
        """The same as ``self.on``, except that the listener is automatically
        removed after being called.
        """
        self._impl_obj.once(event, self._wrap_handler(f))

    def remove_listener(self, event: Any, f: Any) -> None:
        """Removes the function ``f`` from ``event``."""