--- a
+++ b/mmseg/utils/__init__.py
@@ -0,0 +1,9 @@
+# Copyright (c) OpenMMLab. All rights reserved.
+from .collect_env import collect_env
+from .logger import get_root_logger
+from .checkpoint import load_checkpoint
+from .optimizer import (ApexOptimizerHook, GradientCumulativeOptimizerHook, GradientCumulativeFp16OptimizerHook)
+from .customized_text import CustomizedTextLoggerHook
+from .layer_decay_optimizer_constructor import LearningRateDecayOptimizerConstructor
+
+__all__ = ['get_root_logger', 'collect_env', 'load_checkpoint', 'ApexOptimizerHook', 'GradientCumulativeOptimizerHook', 'GradientCumulativeFp16OptimizerHook', 'CustomizedTextLoggerHook', 'LearningRateDecayOptimizerConstructor']