diff options
| -rw-r--r-- | Lib/asyncio/tasks.py | 10 | ||||
| -rw-r--r-- | Misc/NEWS.d/next/Library/2018-05-14-18-05-35.bpo-33505.L8pAyt.rst | 1 |
2 files changed, 6 insertions, 5 deletions
diff --git a/Lib/asyncio/tasks.py b/Lib/asyncio/tasks.py index 5df1af6..4a9db2a 100644 --- a/Lib/asyncio/tasks.py +++ b/Lib/asyncio/tasks.py @@ -542,17 +542,17 @@ def ensure_future(coro_or_future, *, loop=None): If the argument is a Future, it is returned directly. """ - if futures.isfuture(coro_or_future): - if loop is not None and loop is not futures._get_loop(coro_or_future): - raise ValueError('loop argument must agree with Future') - return coro_or_future - elif coroutines.iscoroutine(coro_or_future): + if coroutines.iscoroutine(coro_or_future): if loop is None: loop = events.get_event_loop() task = loop.create_task(coro_or_future) if task._source_traceback: del task._source_traceback[-1] return task + elif futures.isfuture(coro_or_future): + if loop is not None and loop is not futures._get_loop(coro_or_future): + raise ValueError('loop argument must agree with Future') + return coro_or_future elif inspect.isawaitable(coro_or_future): return ensure_future(_wrap_awaitable(coro_or_future), loop=loop) else: diff --git a/Misc/NEWS.d/next/Library/2018-05-14-18-05-35.bpo-33505.L8pAyt.rst b/Misc/NEWS.d/next/Library/2018-05-14-18-05-35.bpo-33505.L8pAyt.rst new file mode 100644 index 0000000..201b027 --- /dev/null +++ b/Misc/NEWS.d/next/Library/2018-05-14-18-05-35.bpo-33505.L8pAyt.rst @@ -0,0 +1 @@ +Optimize asyncio.ensure_future() by reordering if checks: 1.17x faster. |