Closes #18671: Output more information when logging exceptions occur.

Lib/logging/__init__.py

@@ -899,6 +899,9 @@ class Handler(Filterer):
                     # couldn't find the right stack frame, for some reason
                     sys.stderr.write('Logged from file %s, line %s\n' % (
                                      record.filename, record.lineno))
+                # Issue 18671: output logging message and arguments
+                sys.stderr.write('Message: %r\n'
+                                 'Arguments: %s\n' % (record.msg, record.args))
             except OSError: #pragma: no cover
                 pass    # see issue 5971
             finally:

Misc/NEWS

@@ -22,6 +22,8 @@ Core and Builtins
 Library
 -------
 
+- Issue #18671: Output more information when logging exceptions occur.
+
 - Issue #18621: Prevent the site module's patched builtins from keeping
   too many references alive for too long.