Closes issue 12767: document the argument of threading.Condition.notify
diff --git a/Doc/library/threading.rst b/Doc/library/threading.rst
index 9544466..28a3f81 100644
--- a/Doc/library/threading.rst
+++ b/Doc/library/threading.rst
@@ -573,20 +573,21 @@
interface is then used to restore the recursion level when the lock is
reacquired.
- .. method:: notify()
+ .. method:: notify(n=1)
- Wake up a thread waiting on this condition, if any. If the calling thread
- has not acquired the lock when this method is called, a
+ By default, wake up one thread waiting on this condition, if any. If the
+ calling thread has not acquired the lock when this method is called, a
:exc:`RuntimeError` is raised.
- This method wakes up one of the threads waiting for the condition
- variable, if any are waiting; it is a no-op if no threads are waiting.
+ This method wakes up at most *n* of the threads waiting for the condition
+ variable; it is a no-op if no threads are waiting.
- The current implementation wakes up exactly one thread, if any are
- waiting. However, it's not safe to rely on this behavior. A future,
- optimized implementation may occasionally wake up more than one thread.
+ The current implementation wakes up exactly *n* threads, if at least *n*
+ threads are waiting. However, it's not safe to rely on this behavior.
+ A future, optimized implementation may occasionally wake up more than
+ *n* threads.
- Note: the awakened thread does not actually return from its :meth:`wait`
+ Note: an awakened thread does not actually return from its :meth:`wait`
call until it can reacquire the lock. Since :meth:`notify` does not
release the lock, its caller should.