Issue #17521: Corrected non-enabling of logger following two calls to fileConfig().
diff --git a/Lib/logging/config.py b/Lib/logging/config.py
index e3c9324..37729d8 100644
--- a/Lib/logging/config.py
+++ b/Lib/logging/config.py
@@ -260,8 +260,8 @@
             logger.level = logging.NOTSET
             logger.handlers = []
             logger.propagate = 1
-        elif disable_existing_loggers:
-            logger.disabled = 1
+        else:
+            logger.disabled = disable_existing_loggers