root logger

app.py

@@ -1,9 +1,11 @@
 import traceback
 import logging
-logger = logging.getLogger(__name__)
+logger = logging.getLogger()
 logger.setLevel(logging.WARNING)
-handler = logging.StreamHandler()
-logger.addHandler(handler)
+if not logger.handlers:
+    handler = logging.StreamHandler()
+    handler.setFormatter(logging.Formatter("%(asctime)s [%(levelname)s] %(name)s: %(message)s"))
+    logger.addHandler(handler)
 logger.warning("here")
 
 from typing import Optional