Upgrade black version (#7089)

stdlib/concurrent/futures/_base.pyi

@@ -63,6 +63,7 @@ class Executor:
         def submit(self, __fn: Callable[_P, _T], *args: _P.args, **kwargs: _P.kwargs) -> Future[_T]: ...
     else:
         def submit(self, fn: Callable[_P, _T], *args: _P.args, **kwargs: _P.kwargs) -> Future[_T]: ...
+
     def map(
         self, fn: Callable[..., _T], *iterables: Iterable[Any], timeout: float | None = ..., chunksize: int = ...
     ) -> Iterator[_T]: ...
@@ -70,6 +71,7 @@ class Executor:
         def shutdown(self, wait: bool = ..., *, cancel_futures: bool = ...) -> None: ...
     else:
         def shutdown(self, wait: bool = ...) -> None: ...
+
     def __enter__(self: Self) -> Self: ...
     def __exit__(self, exc_type: Any, exc_val: Any, exc_tb: Any) -> bool | None: ...
 

stdlib/concurrent/futures/process.pyi

@@ -81,6 +81,7 @@ if sys.version_info >= (3, 7):
             def __init__(
                 self, max_size: int | None = ..., *, ctx: BaseContext, pending_work_items: dict[int, _WorkItem[Any]]
             ) -> None: ...
+
         def _on_queue_feeder_error(self, e: Exception, obj: _CallItem) -> None: ...
 
 def _get_chunks(*iterables: Any, chunksize: int) -> Generator[tuple[Any, ...], None, None]: ...
@@ -130,6 +131,7 @@ def _chain_from_iterable_of_lists(iterable: Iterable[MutableSequence[Any]]) -> A
 
 if sys.version_info >= (3, 7):
     from ._base import BrokenExecutor
+
     class BrokenProcessPool(BrokenExecutor): ...
 
 else:
@@ -163,4 +165,5 @@ class ProcessPoolExecutor(Executor):
         def __init__(self, max_workers: int | None = ...) -> None: ...
     if sys.version_info >= (3, 9):
         def _start_executor_manager_thread(self) -> None: ...
+
     def _adjust_process_count(self) -> None: ...

stdlib/concurrent/futures/thread.pyi

@@ -41,6 +41,7 @@ else:
 
 if sys.version_info >= (3, 7):
     from ._base import BrokenExecutor
+
     class BrokenThreadPool(BrokenExecutor): ...
 
 class ThreadPoolExecutor(Executor):
@@ -67,6 +68,7 @@ class ThreadPoolExecutor(Executor):
         ) -> None: ...
     else:
         def __init__(self, max_workers: int | None = ..., thread_name_prefix: str = ...) -> None: ...
+
     def _adjust_thread_count(self) -> None: ...
     if sys.version_info >= (3, 7):
         def _initializer_failed(self) -> None: ...