diff options
Diffstat (limited to 'contrib/tools/python3/src/Lib/asyncio/taskgroups.py')
| -rw-r--r-- | contrib/tools/python3/src/Lib/asyncio/taskgroups.py | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/contrib/tools/python3/src/Lib/asyncio/taskgroups.py b/contrib/tools/python3/src/Lib/asyncio/taskgroups.py index bfdbe63049f..d264e51f1fd 100644 --- a/contrib/tools/python3/src/Lib/asyncio/taskgroups.py +++ b/contrib/tools/python3/src/Lib/asyncio/taskgroups.py @@ -2,7 +2,7 @@ # license: PSFL. -__all__ = ["TaskGroup"] +__all__ = ("TaskGroup",) from . import events from . import exceptions @@ -162,8 +162,14 @@ class TaskGroup: else: task = self._loop.create_task(coro, context=context) tasks._set_task_name(task, name) - task.add_done_callback(self._on_task_done) - self._tasks.add(task) + # optimization: Immediately call the done callback if the task is + # already done (e.g. if the coro was able to complete eagerly), + # and skip scheduling a done callback + if task.done(): + self._on_task_done(task) + else: + self._tasks.add(task) + task.add_done_callback(self._on_task_done) return task # Since Python 3.8 Tasks propagate all exceptions correctly, |