Improve typing of PropagateHandler and InterceptHandler

README.rst

@@ -406,7 +406,7 @@ Need to propagate `Loguru` messages to standard `logging`?
 ::
 
     class PropagateHandler(logging.Handler):
-        def emit(self, record):
+        def emit(self, record: logging.LogRecord) -> None:
             logging.getLogger(record.name).handle(record)
 
     logger.add(PropagateHandler(), format="{message}")
@@ -416,16 +416,17 @@ Want to intercept standard `logging` messages toward your `Loguru` sinks?
 ::
 
     class InterceptHandler(logging.Handler):
-        def emit(self, record):
+        def emit(self, record: logging.LogRecord) -> None:
             # Get corresponding Loguru level if it exists.
+            level: str | int
             try:
                 level = logger.level(record.levelname).name
             except ValueError:
                 level = record.levelno
 
             # Find caller from where originated the logged message.
-            frame, depth = sys._getframe(6), 6
-            while frame and frame.f_code.co_filename == logging.__file__:
+            frame, depth = inspect.currentframe(), 0
+            while frame and (depth == 0 or frame.f_code.co_filename == logging.__file__):
                 frame = frame.f_back
                 depth += 1
 

tests/test_interception.py

@@ -1,5 +1,5 @@
+import inspect
 import logging
-import sys
 
 from loguru import logger
 
@@ -15,8 +15,8 @@ def emit(self, record):
             level = record.levelno
 
         # Find caller from where originated the logged message.
-        frame, depth = sys._getframe(6), 6
-        while frame and frame.f_code.co_filename == logging.__file__:
+        frame, depth = inspect.currentframe(), 0
+        while frame and (depth == 0 or frame.f_code.co_filename == logging.__file__):
             frame = frame.f_back
             depth += 1