A nit to make Fred proud.
diff --git a/Lib/exceptions.py b/Lib/exceptions.py
index af752d9..56eed92 100644
--- a/Lib/exceptions.py
+++ b/Lib/exceptions.py
@@ -42,6 +42,7 @@
       +-- NameError
       |    |
       |    +-- UnboundLocalError(*)
+      |
       +-- AttributeError
       +-- SyntaxError
       +-- TypeError