fix(debug): Take into account parent handlers for debug logger (getsentry#4133)

sentrivana · web-flow · commit 37930840dcef · 2025-03-13T15:35:27.000Z
We only check `logger.handlers` for existing handlers. This ignores any potential parent handlers. By using `hasHandlers()` ([docs](https://docs.python.org/3/library/logging.html#logging.Logger.hasHandlers)) instead we take those into account as well. Closes getsentry#3944
diff --git a/sentry_sdk/debug.py b/sentry_sdk/debug.py
@@ -19,7 +19,7 @@ def filter(self, record):
 
 def init_debug_support():
     # type: () -> None
-    if not logger.handlers:
+    if not logger.hasHandlers():
         configure_logger()
 
 
