diff --git a/tests/metagpt/actions/test_invoice_ocr.py b/tests/metagpt/actions/test_invoice_ocr.py
index b3b93cf9f..12b1b4b30 100644
--- a/tests/metagpt/actions/test_invoice_ocr.py
+++ b/tests/metagpt/actions/test_invoice_ocr.py
@@ -34,10 +34,7 @@ async def test_invoice_ocr(invoice_path: str):
 @pytest.mark.parametrize(
     ("invoice_path", "expected_result"),
     [
-        (
-            "../../data/invoices/invoice-1.pdf",
-            [{"收款人": "小明", "城市": "深圳市", "总费用/元": "412.00", "开票日期": "2023年02月03日"}]
-        ),
+        ("../../data/invoices/invoice-1.pdf", [{"收款人": "小明", "城市": "深圳市", "总费用/元": "412.00", "开票日期": "2023年02月03日"}]),
     ],
 )
 async def test_generate_table(invoice_path: str, expected_result: list[dict]):
diff --git a/tests/metagpt/roles/test_invoice_ocr_assistant.py b/tests/metagpt/roles/test_invoice_ocr_assistant.py
index 48abb9eb8..500d93a77 100644
--- a/tests/metagpt/roles/test_invoice_ocr_assistant.py
+++ b/tests/metagpt/roles/test_invoice_ocr_assistant.py
@@ -37,12 +37,10 @@ from metagpt.schema import Message
             Path("../../data/invoices/invoice-3.jpg"),
             Path("../../../data/invoice_table/invoice-3.xlsx"),
             {"收款人": "夏天", "城市": "福州", "总费用/元": 2462.00, "开票日期": "2023年08月26日"},
-        )
+        ),
     ],
 )
-async def test_invoice_ocr_assistant(
-    query: str, invoice_path: Path, invoice_table_path: Path, expected_result: dict
-):
+async def test_invoice_ocr_assistant(query: str, invoice_path: Path, invoice_table_path: Path, expected_result: dict):
     invoice_path = Path.cwd() / invoice_path
     role = InvoiceOCRAssistant()
     await role.run(Message(content=query, instruct_content=InvoicePath(file_path=invoice_path)))
@@ -56,4 +54,3 @@ async def test_invoice_ocr_assistant(
     assert expected_result["城市"] in resp["城市"]
     assert int(expected_result["总费用/元"]) == int(resp["总费用/元"])
     assert expected_result["开票日期"] == resp["开票日期"]
-
diff --git a/tests/metagpt/roles/test_tutorial_assistant.py b/tests/metagpt/roles/test_tutorial_assistant.py
index 4455e1bf6..ca54aaff5 100644
--- a/tests/metagpt/roles/test_tutorial_assistant.py
+++ b/tests/metagpt/roles/test_tutorial_assistant.py
@@ -6,6 +6,7 @@
 @File    : test_tutorial_assistant.py
 """
 import shutil
+
 import aiofiles
 import pytest