Make black formatter happy

src/pip/_internal/utils/misc.py

@@ -133,7 +133,9 @@ def rmtree(dir: str, ignore_errors: bool = False) -> None:
         shutil.rmtree(dir, ignore_errors=ignore_errors, onerror=rmtree_errorhandler)
 
 
-def rmtree_errorhandler(func: Callable[..., Any], path: str, exc_info: Union[ExcInfo, BaseException]) -> None:
+def rmtree_errorhandler(
+    func: Callable[..., Any], path: str, exc_info: Union[ExcInfo, BaseException]
+) -> None:
     """On Windows, the files in .svn are read-only, so when rmtree() tries to
     remove them, an exception is thrown.  We catch that here, remove the
     read-only attribute, and hopefully continue without problems."""