diff --git a/examples/di/interacting_with_human.py b/examples/di/interacting_with_human.py
index c0ce02a40..a02f7c3bc 100644
--- a/examples/di/interacting_with_human.py
+++ b/examples/di/interacting_with_human.py
@@ -1,4 +1,5 @@
 import fire
+
 from metagpt.environment.mgx.mgx_env import MGXEnv
 from metagpt.logs import logger
 from metagpt.roles.di.team_leader import TeamLeader
diff --git a/examples/write_design.py b/examples/write_design.py
index 7eaa1a87b..fbbe9e1f0 100644
--- a/examples/write_design.py
+++ b/examples/write_design.py
@@ -1,10 +1,10 @@
 import asyncio
 
+from metagpt.environment.mgx.mgx_env import MGXEnv
 from metagpt.logs import logger
 from metagpt.roles.architect import Architect
-from metagpt.environment.mgx.mgx_env import MGXEnv
-from metagpt.schema import Message
 from metagpt.roles.di.team_leader import TeamLeader
+from metagpt.schema import Message
 
 
 async def main():
diff --git a/tests/metagpt/roles/test_architect.py b/tests/metagpt/roles/test_architect.py
index 9a834ffbe..cb636b6a1 100644
--- a/tests/metagpt/roles/test_architect.py
+++ b/tests/metagpt/roles/test_architect.py
@@ -8,18 +8,19 @@
         distribution feature for message handling.
 """
 import uuid
+from pathlib import Path
 
 import pytest
 
 from metagpt.actions import WritePRD
+from metagpt.actions.di.run_command import RunCommand
 from metagpt.const import PRDS_FILE_REPO
 from metagpt.logs import logger
 from metagpt.roles import Architect
 from metagpt.schema import Message
 from metagpt.utils.common import any_to_str, awrite
 from tests.metagpt.roles.mock import MockMessages
-from pathlib import Path
-from metagpt.actions.di.run_command import RunCommand
+
 
 @pytest.mark.asyncio
 async def test_architect(context):
diff --git a/tests/metagpt/roles/test_engineer.py b/tests/metagpt/roles/test_engineer.py
index c340e910f..18b297ae5 100644
--- a/tests/metagpt/roles/test_engineer.py
+++ b/tests/metagpt/roles/test_engineer.py
@@ -9,6 +9,7 @@
 """
 import json
 from pathlib import Path
+from types import SimpleNamespace
 
 import pytest
 
@@ -19,9 +20,8 @@ from metagpt.roles.engineer import Engineer
 from metagpt.schema import CodingContext, Message
 from metagpt.utils.common import CodeParser, any_to_name, any_to_str, aread, awrite
 from metagpt.utils.git_repository import ChangeType
-from tests.metagpt.roles.mock import STRS_FOR_PARSING, TASKS, MockMessages
 from metagpt.utils.project_repo import ProjectRepo
-from types import SimpleNamespace
+from tests.metagpt.roles.mock import STRS_FOR_PARSING, TASKS, MockMessages
 
 
 @pytest.mark.asyncio