Method release

Lib/asyncio/locks.py:127–142

Release a lock. When the lock is locked, reset it to unlocked, and return. If any other tasks are blocked waiting for the lock to become unlocked, allow exactly one of them to proceed. When invoked on an unlocked lock, a RuntimeError is raised. There is no

(self)

        return True

    def release(self):
        """Release a lock.

        When the lock is locked, reset it to unlocked, and return.
        If any other tasks are blocked waiting for the lock to become
        unlocked, allow exactly one of them to proceed.

        When invoked on an unlocked lock, a RuntimeError is raised.

        There is no return value.
        """
        if self._locked:
            self._locked = False
            self._wake_up_first()
        else:
            raise RuntimeError('Lock is not acquired.')

    def _wake_up_first(self):
        """Ensure that the first waiter will wake up."""