[Chore] Separate out vllm.utils.importlib (#27022)

Signed-off-by: DarkLight1337 <tlleungac@connect.ust.hk>

vllm/model_executor/model_loader/tensorizer.py

@@ -26,7 +26,8 @@ from vllm.config import ModelConfig, ParallelConfig, VllmConfig, set_current_vll
 from vllm.logger import init_logger
 from vllm.model_executor.layers.vocab_parallel_embedding import VocabParallelEmbedding
 from vllm.platforms import current_platform
-from vllm.utils import FlexibleArgumentParser, PlaceholderModule
+from vllm.utils import FlexibleArgumentParser
+from vllm.utils.import_utils import PlaceholderModule
 
 if TYPE_CHECKING:
     from vllm.engine.arg_utils import EngineArgs

vllm/model_executor/model_loader/weight_utils.py

@@ -34,7 +34,7 @@ from vllm.model_executor.layers.quantization import (
     get_quantization_config,
 )
 from vllm.platforms import current_platform
-from vllm.utils import PlaceholderModule
+from vllm.utils.import_utils import PlaceholderModule
 
 try:
     from runai_model_streamer import SafetensorsStreamer