diff --git a/tests/basic/test_commands.py b/tests/basic/test_commands.py
index d11f9a3b2..be592b09e 100644
--- a/tests/basic/test_commands.py
+++ b/tests/basic/test_commands.py
@@ -764,7 +764,9 @@ class TestCommands(TestCase):
                 read_only_files = {coder.get_rel_fname(f) for f in coder.abs_read_only_fnames}
 
                 self.assertEqual(added_files, {str(Path("file1.txt"))})
-                self.assertTrue(any(os.path.samefile(external_file_path, f) for f in read_only_files))
+                self.assertTrue(
+                    any(os.path.samefile(external_file_path, f) for f in read_only_files)
+                )
 
                 # Clean up
                 Path(session_file).unlink()