fix event loop conflict

lightrag/lightrag.py

@@ -1,6 +1,5 @@
 import asyncio
 import os
-import importlib
 from dataclasses import asdict, dataclass, field
 from datetime import datetime
 from functools import partial
@@ -24,18 +23,15 @@ from .storage import (
     NanoVectorDBStorage,
     NetworkXStorage,
 )
- 
-from .kg.neo4j_impl import (
-    Neo4JStorage 
-)
-#future KG integrations
+
+from .kg.neo4j_impl import Neo4JStorage
+# future KG integrations
 
 # from .kg.ArangoDB_impl import (
 #     GraphStorage as ArangoDBStorage
 # )
 
 
-
 from .utils import (
     EmbeddingFunc,
     compute_mdhash_id,
@@ -52,6 +48,7 @@ from .base import (
     QueryParam,
 )
 
+
 def always_get_an_event_loop() -> asyncio.AbstractEventLoop:
     try:
         loop = asyncio.get_event_loop()
@@ -64,7 +61,6 @@ def always_get_an_event_loop() -> asyncio.AbstractEventLoop:
 
 @dataclass
 class LightRAG:
-    
     working_dir: str = field(
         default_factory=lambda: f"./lightrag_cache_{datetime.now().strftime('%Y-%m-%d-%H:%M:%S')}"
     )
@@ -74,8 +70,6 @@ class LightRAG:
     current_log_level = logger.level
     log_level: str = field(default=current_log_level)
 
-
-
     # text chunking
     chunk_token_size: int = 1200
     chunk_overlap_token_size: int = 100
@@ -130,8 +124,10 @@ class LightRAG:
         _print_config = ",\n  ".join([f"{k} = {v}" for k, v in asdict(self).items()])
         logger.debug(f"LightRAG init with param:\n  {_print_config}\n")
 
-        #@TODO: should move all storage setup here to leverage initial start params attached to self.
-        self.graph_storage_cls: Type[BaseGraphStorage] = self._get_storage_class()[self.kg]
+        # @TODO: should move all storage setup here to leverage initial start params attached to self.
+        self.graph_storage_cls: Type[BaseGraphStorage] = self._get_storage_class()[
+            self.kg
+        ]
 
         if not os.path.exists(self.working_dir):
             logger.info(f"Creating working directory {self.working_dir}")
@@ -185,6 +181,7 @@ class LightRAG:
                 **self.llm_model_kwargs,
             )
         )
+
     def _get_storage_class(self) -> Type[BaseGraphStorage]:
         return {
             "Neo4JStorage": Neo4JStorage,
@@ -328,4 +325,4 @@ class LightRAG:
             if storage_inst is None:
                 continue
             tasks.append(cast(StorageNameSpace, storage_inst).index_done_callback())
-        await asyncio.gather(*tasks)
+        await asyncio.gather(*tasks)