Fix linting

lightrag/utils.py

@@ -706,7 +706,7 @@ class CacheData:
 
 async def save_to_cache(hashing_kv, cache_data: CacheData):
     """Save data to cache, with improved handling for streaming responses and duplicate content.
-    
+
     Args:
         hashing_kv: The key-value storage for caching
         cache_data: The cache data to save
@@ -714,12 +714,12 @@ async def save_to_cache(hashing_kv, cache_data: CacheData):
     # Skip if storage is None or content is a streaming response
     if hashing_kv is None or not cache_data.content:
         return
-    
+
     # If content is a streaming response, don't cache it
     if hasattr(cache_data.content, "__aiter__"):
         logger.debug("Streaming response detected, skipping cache")
         return
-    
+
     # Get existing cache data
     if exists_func(hashing_kv, "get_by_mode_and_id"):
         mode_cache = (
@@ -728,14 +728,16 @@ async def save_to_cache(hashing_kv, cache_data: CacheData):
         )
     else:
         mode_cache = await hashing_kv.get_by_id(cache_data.mode) or {}
-    
+
     # Check if we already have identical content cached
     if cache_data.args_hash in mode_cache:
         existing_content = mode_cache[cache_data.args_hash].get("return")
         if existing_content == cache_data.content:
-            logger.info(f"Cache content unchanged for {cache_data.args_hash}, skipping update")
+            logger.info(
+                f"Cache content unchanged for {cache_data.args_hash}, skipping update"
+            )
             return
-    
+
     # Update cache with new content
     mode_cache[cache_data.args_hash] = {
         "return": cache_data.content,
@@ -750,7 +752,7 @@ async def save_to_cache(hashing_kv, cache_data: CacheData):
         "embedding_max": cache_data.max_val,
         "original_prompt": cache_data.prompt,
     }
-    
+
     # Only upsert if there's actual new content
     await hashing_kv.upsert({cache_data.mode: mode_cache})