Clarify a guarantee of the logging module. (GH-19132)
When no additional arguments are passed to logging.debug() and related
methods, no % operation is performed on the passed in message.
(cherry picked from commit 9b8e74ca77da7167033917d155e5f55c67b92f14)
Co-authored-by: Gregory P. Smith <greg@krypto.org>
diff --git a/Doc/library/logging.rst b/Doc/library/logging.rst
index 4da5778..14e7190 100644
--- a/Doc/library/logging.rst
+++ b/Doc/library/logging.rst
@@ -159,6 +159,7 @@
message format string, and the *args* are the arguments which are merged into
*msg* using the string formatting operator. (Note that this means that you can
use keywords in the format string, together with a single dictionary argument.)
+ No % formatting operation is performed on *msg* when no *args* are supplied.
There are four keyword arguments in *kwargs* which are inspected:
*exc_info*, *stack_info*, *stacklevel* and *extra*.