bpo-40721: add note about enum member name case (GH-22231)

ethanfurman · web-flow · commit 542e1df2b018 · 2020-09-14T13:32:44.000-07:00
* UPPER_CASE preferred as enum members are constants
diff --git a/Doc/library/enum.rst b/Doc/library/enum.rst
@@ -19,6 +19,12 @@ An enumeration is a set of symbolic names (members) bound to unique,
 constant values.  Within an enumeration, the members can be compared
 by identity, and the enumeration itself can be iterated over.
 
+.. note:: Case of Enum Members
+
+    Because Enums are used to represent constants we recommend using
+    UPPER_CASE names for enum members, and will be using that style
+    in our examples.
+
 
 Module Contents
 ---------------
