Fix format

Author: filmor

tests/test_common.py

@@ -156,6 +156,8 @@ def run_in_subprocess(func, *args, **kwargs):
     p.start()
     p.join()
     try:
-        assert p.exitcode == 0, f"Subprocess {func.__name__!r} failed with exit code {p.exitcode}"
+        assert p.exitcode == 0, (
+            f"Subprocess {func.__name__!r} failed with exit code {p.exitcode}"
+        )
     finally:
         p.close()