bpo-34415: Updated logging.Formatter docstring. (GH-8811)
diff --git a/Lib/logging/__init__.py b/Lib/logging/__init__.py
index 29a7d46..a4a950d 100644
--- a/Lib/logging/__init__.py
+++ b/Lib/logging/__init__.py
@@ -424,7 +424,8 @@
responsible for converting a LogRecord to (usually) a string which can
be interpreted by either a human or an external system. The base Formatter
allows a formatting string to be specified. If none is supplied, the
- default value of "%s(message)" is used.
+ the style-dependent default value, "%(message)s", "{message}", or
+ "${message}", is used.
The Formatter can be initialized with a format string which makes use of
knowledge of the LogRecord attributes - e.g. the default value mentioned