RuntimeError: await wasn't used with future
Closed this issue · 13 comments
Running the example.py script (or using this lib via a home assistant integration) results in an immediate error (I'm not really familiar with python asyncio to try to fix this myself):
$ python example.py 172.17.2.17
DEBUG:asyncio:Using selector: EpollSelector
DEBUG:brother:Initializing device 172.17.2.17
Traceback (most recent call last):
File "/srv/homeassistant/example.py", line 50, in <module>
loop.run_until_complete(main())
File "/usr/lib/python3.9/asyncio/base_events.py", line 642, in run_until_complete
return future.result()
File "/srv/homeassistant/example.py", line 31, in main
brother = await Brother.create(
File "/srv/homeassistant/lib/python3.9/site-packages/brother/__init__.py", line 95, in create
await instance.initialize()
File "/srv/homeassistant/lib/python3.9/site-packages/brother/__init__.py", line 120, in initialize
_, errstatus, errindex, _ = await hlapi.getCmd(*request_args, *tuple(oids))
RuntimeError: await wasn't used with future
ERROR:asyncio:Task was destroyed but it is pending!
task: <Task pending name='Task-2' coro=<BaseEventLoop.create_datagram_endpoint() running at /usr/lib/python3.9/asyncio/base_events.py:1380> wait_for=<Future pending cb=[<TaskWakeupMethWrapper object at 0x7fbb365fa0>()]>>
ERROR:asyncio:Task was destroyed but it is pending!
task: <Task pending name='Task-3' coro=<AsyncioDispatcher.handle_timeout() running at /srv/homeassistant/lib/python3.9/site-packages/pysnmp/carrier/asyncio/dispatch.py:55> wait_for=<Future pending cb=[<TaskWakeupMethWrapper object at 0x7fbb365f10>()]>>
Exception ignored in: <coroutine object BaseEventLoop.create_datagram_endpoint at 0x7fbb472340>
Traceback (most recent call last):
File "/usr/lib/python3.9/asyncio/base_events.py", line 1382, in create_datagram_endpoint
File "/usr/lib/python3.9/asyncio/selector_events.py", line 700, in close
File "/usr/lib/python3.9/asyncio/base_events.py", line 746, in call_soon
File "/usr/lib/python3.9/asyncio/base_events.py", line 510, in _check_closed
RuntimeError: Event loop is closed
I tried both 2.0.0 and current git with python 3.9 in home assistant virtual environment and 3.11 in a clean Fedora 37 installation, the error is always the same.
Yes, I know about the issue, it is related to pysnmplib. I was too quick with merging branch and release new version. Please use version 1.2.3.
Hmm, I see the same error even with 1.2.3:
$ pip install brother
...
Installing collected packages: pysnmp-pyasn1, pycryptodomex, pysnmp-pysmi, pysnmplib, brother
Successfully installed brother-1.2.3 pycryptodomex-3.16.0 pysnmp-pyasn1-1.1.2 pysnmp-pysmi-1.1.10 pysnmplib-5.0.20
$ wget https://raw.githubusercontent.com/bieniu/brother/1.2.3/example.py
$ python example.py 172.17.2.17
DEBUG:asyncio:Using selector: EpollSelector
DEBUG:brother:Using host: 172.17.2.17
Traceback (most recent call last):
File "/home/test/example.py", line 48, in <module>
loop.run_until_complete(main())
File "/usr/lib64/python3.11/asyncio/base_events.py", line 650, in run_until_complete
return future.result()
^^^^^^^^^^^^^^^
File "/home/test/example.py", line 32, in main
data = await brother.async_update()
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/test/.local/lib/python3.11/site-packages/brother/__init__.py", line 98, in async_update
if not (raw_data := await self._get_data()):
^^^^^^^^^^^^^^^^^^^^^^
File "/home/test/.local/lib/python3.11/site-packages/brother/__init__.py", line 232, in _get_data
await self._init_device()
File "/home/test/.local/lib/python3.11/site-packages/brother/__init__.py", line 302, in _init_device
errindication, errstatus, errindex, _ = await hlapi.getCmd(*request_args, *oids)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
RuntimeError: await wasn't used with future
ERROR:asyncio:Task was destroyed but it is pending!
task: <Task pending name='Task-2' coro=<BaseEventLoop.create_datagram_endpoint() running at /usr/lib64/python3.11/asyncio/base_events.py:1389> wait_for=<Future pending cb=[Task.task_wakeup()]>>
Exception ignored in: <coroutine object BaseEventLoop.create_datagram_endpoint at 0x7f365aa428f0>
Traceback (most recent call last):
File "/usr/lib64/python3.11/asyncio/base_events.py", line 1391, in create_datagram_endpoint
File "/usr/lib64/python3.11/asyncio/selector_events.py", line 831, in close
File "/usr/lib64/python3.11/asyncio/base_events.py", line 758, in call_soon
File "/usr/lib64/python3.11/asyncio/base_events.py", line 519, in _check_closed
RuntimeError: Event loop is closed
ERROR:asyncio:Task was destroyed but it is pending!
task: <Task pending name='Task-3' coro=<AsyncioDispatcher.handle_timeout() running at /home/test/.local/lib/python3.11/site-packages/pysnmp/carrier/asyncio/dispatch.py:55> wait_for=<Future pending cb=[Task.task_wakeup()]>>
Version 1.2.3 is not compatible with Python 3.11.
And you have to downgrade pysnmplib.
Oh, that would be the missing part as 1.2.3 was reporting the same error even with python 3.9.0. Anyway everything works well with pysnmplib 5.0.19.
Thanks.
Is this the same issue I am having? https://www.reddit.com/r/homeassistant/comments/zfnsu6/brother_printers/
Yeah, looks like it's the same issue.
Even after adding that package and the .20 version I still get the same response about invalid host. I know the host is correct.
@lionslair If you have problem with Home Assistant, please open an issue in HA repository. HA is using brother==2.0.0 and pysnmplib==5.0.15 and this problem should not accur.
@jirkade I published brother=2.0.1 with pinned pysnmplib version. This version works with Python<3.11.
Sorry. I was just following the links for HA
I will try those explicit modules