Closes #29220: Fixed regression in logging.getLevelName().

1 files changed, 7 insertions, 3 deletions

diff --git a/Lib/logging/__init__.py b/Lib/logging/__init__.py
index d886d35c12..fb866f39d9 100644
--- a/Lib/logging/__init__.py
+++ b/Lib/logging/__init__.py
@@ -131,9 +131,13 @@ def getLevelName(level):
 
     Otherwise, the string "Level %s" % level is returned.
     """
-    # See Issues #22386 and #27937 for why it's this way
-    return (_levelToName.get(level) or _nameToLevel.get(level) or
-            "Level %s" % level)
+    # See Issues #22386, #27937 and #29220 for why it's this way
+    result = _levelToName.get(level)
+    if result is None:
+        result = _nameToLevel.get(level)
+    if result is None:
+        result = "Level %s" % level
+    return result
 
 def addLevelName(level, levelName):
     """