diff --git a/lightrag/base.py b/lightrag/base.py
index a4a9a10f..ac0545ce 100644
--- a/lightrag/base.py
+++ b/lightrag/base.py
@@ -74,13 +74,19 @@ class QueryParam:
     If None, defaults to top_k value.
     """
 
-    max_entity_tokens: int = int(os.getenv("MAX_ENTITY_TOKENS", str(DEFAULT_MAX_ENTITY_TOKENS)))
+    max_entity_tokens: int = int(
+        os.getenv("MAX_ENTITY_TOKENS", str(DEFAULT_MAX_ENTITY_TOKENS))
+    )
     """Maximum number of tokens allocated for entity context in unified token control system."""
 
-    max_relation_tokens: int = int(os.getenv("MAX_RELATION_TOKENS", str(DEFAULT_MAX_RELATION_TOKENS)))
+    max_relation_tokens: int = int(
+        os.getenv("MAX_RELATION_TOKENS", str(DEFAULT_MAX_RELATION_TOKENS))
+    )
     """Maximum number of tokens allocated for relationship context in unified token control system."""
 
-    max_total_tokens: int = int(os.getenv("MAX_TOTAL_TOKENS", str(DEFAULT_MAX_TOTAL_TOKENS)))
+    max_total_tokens: int = int(
+        os.getenv("MAX_TOTAL_TOKENS", str(DEFAULT_MAX_TOTAL_TOKENS))
+    )
     """Maximum total tokens budget for the entire query context (entities + relations + chunks + system prompt)."""
 
     hl_keywords: list[str] = field(default_factory=list)
@@ -111,7 +117,9 @@ class QueryParam:
     If proivded, this will be use instead of the default vaulue from prompt template.
     """
 
-    enable_rerank: bool = os.getenv("ENABLE_RERANK", str(DEFAULT_ENABLE_RERANK).lower()).lower() == "true"
+    enable_rerank: bool = (
+        os.getenv("ENABLE_RERANK", str(DEFAULT_ENABLE_RERANK).lower()).lower() == "true"
+    )
     """Enable reranking for retrieved text chunks. If True but no rerank model is configured, a warning will be issued.
     Default is True to enable reranking when rerank model is available.
     """
diff --git a/lightrag/operate.py b/lightrag/operate.py
index 8de3a1da..47bc2b3e 100644
--- a/lightrag/operate.py
+++ b/lightrag/operate.py
@@ -1964,17 +1964,23 @@ async def _build_query_context(
         max_entity_tokens = getattr(
             query_param,
             "max_entity_tokens",
-            text_chunks_db.global_config.get("MAX_ENTITY_TOKENS", DEFAULT_MAX_ENTITY_TOKENS),
+            text_chunks_db.global_config.get(
+                "MAX_ENTITY_TOKENS", DEFAULT_MAX_ENTITY_TOKENS
+            ),
         )
         max_relation_tokens = getattr(
             query_param,
             "max_relation_tokens",
-            text_chunks_db.global_config.get("MAX_RELATION_TOKENS", DEFAULT_MAX_RELATION_TOKENS),
+            text_chunks_db.global_config.get(
+                "MAX_RELATION_TOKENS", DEFAULT_MAX_RELATION_TOKENS
+            ),
         )
         max_total_tokens = getattr(
             query_param,
             "max_total_tokens",
-            text_chunks_db.global_config.get("MAX_TOTAL_TOKENS", DEFAULT_MAX_TOTAL_TOKENS),
+            text_chunks_db.global_config.get(
+                "MAX_TOTAL_TOKENS", DEFAULT_MAX_TOTAL_TOKENS
+            ),
         )
 
         # Truncate entities based on complete JSON serialization
@@ -2692,7 +2698,9 @@ async def naive_query(
     # Calculate dynamic token limit for chunks
     # Get token limits from query_param (with fallback to global_config)
     max_total_tokens = getattr(
-        query_param, "max_total_tokens", global_config.get("MAX_TOTAL_TOKENS", DEFAULT_MAX_TOTAL_TOKENS)
+        query_param,
+        "max_total_tokens",
+        global_config.get("MAX_TOTAL_TOKENS", DEFAULT_MAX_TOTAL_TOKENS),
     )
 
     # Calculate conversation history tokens