Issue #16231: Allow false values other than None to be used as persistent IDs.
diff --git a/Misc/NEWS b/Misc/NEWS
index e894f3e..0581dd2 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -15,6 +15,11 @@
Library
-------
+- Issue #16231: Fixed pickle.Pickler to only fallback to its default pickling
+ behaviour when Pickler.persistent_id returns None, but not for any other
+ false values. This allows false values other values other than None to be
+ used as persistent IDs. This behaviour is consistent with cPickle.
+
- Issue #11508: Fixed uuid.getnode() and uuid.uuid1() on environment with
virtual interface. Original patch by Kent Frazier.