From 4a9d03f1b11917a82a540c6166cd4d5b4767d185 Mon Sep 17 00:00:00 2001 From: Harshit28j Date: Wed, 11 Mar 2026 17:01:16 +0530 Subject: [PATCH] Fix FocusLogger dedup to use exact type match in litellm_logging.py Use `type(cb) is FocusLogger` instead of `isinstance(cb, FocusLogger)` in both _init_custom_logger_compatible_class and get_custom_logger_compatible_class so that a VantageLogger already in _in_memory_loggers is not incorrectly returned for a "focus" lookup. This ensures users with both "vantage" and "focus" in success_callbacks get separate loggers for each export destination. Co-Authored-By: Claude Opus 4.6 --- litellm/litellm_core_utils/litellm_logging.py | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/litellm/litellm_core_utils/litellm_logging.py b/litellm/litellm_core_utils/litellm_logging.py index 7157f4cb633..81f85e3d5b9 100644 --- a/litellm/litellm_core_utils/litellm_logging.py +++ b/litellm/litellm_core_utils/litellm_logging.py @@ -3868,7 +3868,7 @@ def _init_custom_logger_compatible_class( # noqa: PLR0915 from litellm.integrations.focus.focus_logger import FocusLogger for callback in _in_memory_loggers: - if isinstance(callback, FocusLogger): + if type(callback) is FocusLogger: # exact match; exclude subclasses like VantageLogger return callback # type: ignore focus_logger = FocusLogger() _in_memory_loggers.append(focus_logger) @@ -4250,7 +4250,7 @@ def get_custom_logger_compatible_class( # noqa: PLR0915 from litellm.integrations.focus.focus_logger import FocusLogger for callback in _in_memory_loggers: - if isinstance(callback, FocusLogger): + if type(callback) is FocusLogger: # exact match; exclude subclasses like VantageLogger return callback elif logging_integration == "vantage": from litellm.integrations.vantage.vantage_logger import VantageLogger