diff --git a/tests/basic/test_io.py b/tests/basic/test_io.py
index f590194ab..e831fef10 100644
--- a/tests/basic/test_io.py
+++ b/tests/basic/test_io.py
@@ -5,9 +5,9 @@ from unittest.mock import MagicMock, patch
 
 from prompt_toolkit.completion import CompleteEvent
 from prompt_toolkit.document import Document
+from rich.text import Text
 
 from aider.dump import dump  # noqa: F401
-from rich.text import Text
 from aider.io import AutoCompleter, ConfirmGroup, InputOutput
 from aider.utils import ChdirTemporaryDirectory
 
@@ -483,11 +483,7 @@ class TestInputOutputFormatFiles(unittest.TestCase):
         rel_fnames = ["file1.txt", "file[markup].txt", "ro_file.txt"]
         rel_read_only_fnames = ["ro_file.txt"]
 
-        expected_output = (
-            "file1.txt\n"
-            "file[markup].txt\n"
-            "ro_file.txt (read only)\n"
-        )
+        expected_output = "file1.txt\nfile[markup].txt\nro_file.txt (read only)\n"
         # Sort the expected lines because the order of editable vs read-only might vary
         # depending on internal sorting, but the content should be the same.
         # The method sorts editable_files and read_only_files separately.
@@ -499,11 +495,13 @@ class TestInputOutputFormatFiles(unittest.TestCase):
         # output = "\n".join(read_only_files + editable_files) + "\n"
 
         # Correct expected output based on implementation:
-        expected_output_lines = sorted([
-            "ro_file.txt (read only)",
-            "file1.txt",
-            "file[markup].txt",
-        ])
+        expected_output_lines = sorted(
+            [
+                "ro_file.txt (read only)",
+                "file1.txt",
+                "file[markup].txt",
+            ]
+        )
         expected_output = "\n".join(expected_output_lines) + "\n"
 
         actual_output = io.format_files_for_input(rel_fnames, rel_read_only_fnames)
@@ -517,7 +515,9 @@ class TestInputOutputFormatFiles(unittest.TestCase):
     @patch("rich.columns.Columns")
     @patch("os.path.abspath")
     @patch("os.path.join")
-    def test_format_files_for_input_pretty_true_no_files(self, mock_join, mock_abspath, mock_columns):
+    def test_format_files_for_input_pretty_true_no_files(
+        self, mock_join, mock_abspath, mock_columns
+    ):
         io = InputOutput(pretty=True, root="test_root")
         io.format_files_for_input([], [])
         mock_columns.assert_not_called()
@@ -525,7 +525,9 @@ class TestInputOutputFormatFiles(unittest.TestCase):
     @patch("rich.columns.Columns")
     @patch("os.path.abspath")
     @patch("os.path.join")
-    def test_format_files_for_input_pretty_true_editable_only(self, mock_join, mock_abspath, mock_columns):
+    def test_format_files_for_input_pretty_true_editable_only(
+        self, mock_join, mock_abspath, mock_columns
+    ):
         io = InputOutput(pretty=True, root="test_root")
         rel_fnames = ["edit1.txt", "edit[markup].txt"]
 
@@ -544,7 +546,9 @@ class TestInputOutputFormatFiles(unittest.TestCase):
     @patch("rich.columns.Columns")
     @patch("os.path.abspath")
     @patch("os.path.join")
-    def test_format_files_for_input_pretty_true_readonly_only(self, mock_join, mock_abspath, mock_columns):
+    def test_format_files_for_input_pretty_true_readonly_only(
+        self, mock_join, mock_abspath, mock_columns
+    ):
         io = InputOutput(pretty=True, root="test_root")
 
         # Mock path functions to ensure rel_path is chosen by the shortener logic
@@ -553,7 +557,7 @@ class TestInputOutputFormatFiles(unittest.TestCase):
 
         rel_read_only_fnames = ["ro1.txt", "ro[markup].txt"]
         # When all files in chat are read-only
-        rel_fnames = list(rel_read_only_fnames) 
+        rel_fnames = list(rel_read_only_fnames)
 
         io.format_files_for_input(rel_fnames, rel_read_only_fnames)
 
@@ -561,7 +565,7 @@ class TestInputOutputFormatFiles(unittest.TestCase):
         args, _ = mock_columns.call_args
         renderables = args[0]
 
-        self.assertEqual(len(renderables), 3) # Readonly: + 2 files
+        self.assertEqual(len(renderables), 3)  # Readonly: + 2 files
         self.assertIsInstance(renderables[0], Text)
         self.assertEqual(renderables[0].plain, "Readonly:")
         self.assertIsInstance(renderables[1], Text)
@@ -572,7 +576,9 @@ class TestInputOutputFormatFiles(unittest.TestCase):
     @patch("rich.columns.Columns")
     @patch("os.path.abspath")
     @patch("os.path.join")
-    def test_format_files_for_input_pretty_true_mixed_files(self, mock_join, mock_abspath, mock_columns):
+    def test_format_files_for_input_pretty_true_mixed_files(
+        self, mock_join, mock_abspath, mock_columns
+    ):
         io = InputOutput(pretty=True, root="test_root")
 
         mock_join.side_effect = lambda *args: "/".join(args)
@@ -588,12 +594,17 @@ class TestInputOutputFormatFiles(unittest.TestCase):
         # First call for read-only files
         args_ro, _ = mock_columns.call_args_list[0]
         renderables_ro = args_ro[0]
-        self.assertEqual(renderables_ro, [Text("Readonly:"), Text("ro1.txt"), Text("ro[markup].txt")])
+        self.assertEqual(
+            renderables_ro, [Text("Readonly:"), Text("ro1.txt"), Text("ro[markup].txt")]
+        )
 
         # Second call for editable files
         args_ed, _ = mock_columns.call_args_list[1]
         renderables_ed = args_ed[0]
-        self.assertEqual(renderables_ed, [Text("Editable:"), Text("edit1.txt"), Text("edit[markup].txt")])
+        self.assertEqual(
+            renderables_ed, [Text("Editable:"), Text("edit1.txt"), Text("edit[markup].txt")]
+        )
+
 
 if __name__ == "__main__":
     unittest.main()