bpo-25612: Add minimal What's New in 3.7 entry (GH-7656)

diff --git a/Doc/whatsnew/3.7.rst b/Doc/whatsnew/3.7.rst
index a7ea0af723a3ae99757d9bfe5cbc84b5c50773bc..bb9c3aba387be83031421331f52bbdef5c11583f 100644 (file)
--- a/Doc/whatsnew/3.7.rst
+++ b/Doc/whatsnew/3.7.rst
@@ -2442,3 +2442,8 @@ Due to a change in the way docstrings are handled by the compiler, the
 implicit ``return None`` in a function body consisting solely of a docstring
 is now marked as occurring on the same line as the docstring, not on the
 function's header line.
+
+The current exception state has been moved from the frame object to the co-routine.
+This simplified the interpreter and fixed a couple of obscure bugs caused by
+having swap exception state when entering or exiting a generator.
+(Contributed by Mark Shannon in :issue:`25612`.)