Method release

python/python3/tornado/locks.py:540–550

Unlock. The first coroutine in line waiting for `acquire` gets the lock. If not locked, raise a `RuntimeError`.

(self)

        return self._block.acquire(timeout)

    def release(self) -> None:
        """Unlock.

        The first coroutine in line waiting for `acquire` gets the lock.

        If not locked, raise a `RuntimeError`.
        """
        try:
            self._block.release()
        except ValueError:
            raise RuntimeError("release unlocked lock")

    def __enter__(self) -> None:
        raise RuntimeError("Use `async with` instead of `with` for Lock")