Fix nit in comment.
diff --git a/Lib/Queue.py b/Lib/Queue.py
index 0f80584..79b0abf 100644
--- a/Lib/Queue.py
+++ b/Lib/Queue.py
@@ -26,7 +26,7 @@
self._init(maxsize)
# mutex must be held whenever the queue is mutating. All methods
# that acquire mutex must release it before returning. mutex
- # is shared between the two conditions, so acquiring and
+ # is shared between the three conditions, so acquiring and
# releasing the conditions also acquires and releases mutex.
self.mutex = threading.Lock()
# Notify not_empty whenever an item is added to the queue; a