Method initialize

python/python3/tornado/ioloop.py:347–356

(self, make_current: Optional[bool] = None)

        return AsyncIOLoop

    def initialize(self, make_current: Optional[bool] = None) -> None:
        if make_current is None:
            if IOLoop.current(instance=False) is None:
                self.make_current()
        elif make_current:
            current = IOLoop.current(instance=False)
            # AsyncIO loops can already be current by this point.
            if current is not None and current is not self:
                raise RuntimeError("current IOLoop already exists")
            self.make_current()

    def close(self, all_fds: bool = False) -> None:
        """Closes the `IOLoop`, freeing any resources used.