diff options
Diffstat (limited to 'Lib/asyncio/taskgroups.py')
| -rw-r--r-- | Lib/asyncio/taskgroups.py | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/Lib/asyncio/taskgroups.py b/Lib/asyncio/taskgroups.py index 9fa772ca9d0..8af199d6dcc 100644 --- a/Lib/asyncio/taskgroups.py +++ b/Lib/asyncio/taskgroups.py @@ -205,7 +205,12 @@ class TaskGroup: else: self._tasks.add(task) task.add_done_callback(self._on_task_done) - return task + try: + return task + finally: + # gh-128552: prevent a refcycle of + # task.exception().__traceback__->TaskGroup.create_task->task + del task # Since Python 3.8 Tasks propagate all exceptions correctly, # except for KeyboardInterrupt and SystemExit which are |