diff --git a/test_lightrag_ollama_chat.py b/test_lightrag_ollama_chat.py
index d17d50fc..08ecad67 100644
--- a/test_lightrag_ollama_chat.py
+++ b/test_lightrag_ollama_chat.py
@@ -19,18 +19,23 @@ from datetime import datetime
 from pathlib import Path
 from enum import Enum, auto
 
+
 class ErrorCode(Enum):
     """Error codes for MCP errors"""
+
     InvalidRequest = auto()
     InternalError = auto()
 
+
 class McpError(Exception):
     """Base exception class for MCP errors"""
+
     def __init__(self, code: ErrorCode, message: str):
         self.code = code
         self.message = message
         super().__init__(message)
 
+
 DEFAULT_CONFIG = {
     "server": {
         "host": "localhost",
@@ -660,13 +665,17 @@ def test_generate_concurrent() -> None:
         try:
             async with session.post(url, json=data) as response:
                 if response.status != 200:
-                    error_msg = f"Request {request_id} failed with status {response.status}"
+                    error_msg = (
+                        f"Request {request_id} failed with status {response.status}"
+                    )
                     if OutputControl.is_verbose():
                         print(f"\n{error_msg}")
                     raise McpError(ErrorCode.InternalError, error_msg)
                 result = await response.json()
                 if "error" in result:
-                    error_msg = f"Request {request_id} returned error: {result['error']}"
+                    error_msg = (
+                        f"Request {request_id} returned error: {result['error']}"
+                    )
                     if OutputControl.is_verbose():
                         print(f"\n{error_msg}")
                     raise McpError(ErrorCode.InternalError, error_msg)
@@ -679,21 +688,23 @@ def test_generate_concurrent() -> None:
 
     async def run_concurrent_requests():
         prompts = ["第一个问题", "第二个问题", "第三个问题", "第四个问题", "第五个问题"]
-        
+
         async with get_session() as session:
-            tasks = [make_request(session, prompt, i+1) for i, prompt in enumerate(prompts)]
+            tasks = [
+                make_request(session, prompt, i + 1) for i, prompt in enumerate(prompts)
+            ]
             results = await asyncio.gather(*tasks, return_exceptions=True)
-            
+
             # 收集成功和失败的结果
             success_results = []
             error_messages = []
-            
+
             for i, result in enumerate(results):
                 if isinstance(result, Exception):
                     error_messages.append(f"Request {i+1} failed: {str(result)}")
                 else:
-                    success_results.append((i+1, result))
-            
+                    success_results.append((i + 1, result))
+
             # 如果有任何错误,在打印完所有结果后抛出异常
             if error_messages:
                 # 先打印成功的结果
@@ -701,14 +712,14 @@ def test_generate_concurrent() -> None:
                     if OutputControl.is_verbose():
                         print(f"\nRequest {req_id} succeeded:")
                         print_json_response(result)
-                
+
                 # 打印所有错误信息
                 error_summary = "\n".join(error_messages)
                 raise McpError(
                     ErrorCode.InternalError,
-                    f"Some concurrent requests failed:\n{error_summary}"
+                    f"Some concurrent requests failed:\n{error_summary}",
                 )
-            
+
             return results
 
     if OutputControl.is_verbose():
@@ -721,7 +732,7 @@ def test_generate_concurrent() -> None:
         for i, result in enumerate(results, 1):
             print(f"\nRequest {i} result:")
             print_json_response(result)
-    except McpError as e:
+    except McpError:
         # 错误信息已经在之前打印过了,这里直接抛出
         raise