Warning thrown: Corutine was never waited

[j0hn]

Sorry if this is not the place to ask but i'm getting a warning on prompt-toolkit but being thrown using ipdb.

I'm trying to use ipdb inside a flask application and im getting the following warning on every command or after pressing the autocomplete key:

ipdb>                                                                                                                                                                                                                  
/Users/gonzalo/.pyenv/versions/3.10.11/envs/boostup/lib/python3.10/site-packages/prompt_toolkit/application/application.py:1207: RuntimeWarning: coroutine 'Application.run_async.<locals>._run_async.<locals>.auto_flush_input' was never awaited                                                                                  
  await asyncio.wait(                                                                                                                                                                                                   
RuntimeWarning: Enable tracemalloc to get the object allocation traceback
                                                                                                            
ipdb>

I have Python 3.10.11 with prompt_toolkit==3.0.47 installed and ipdb==0.13.13

Any ideas how to get rid of this warning?

[dmedvinsky]

I'm facing the same issue with my Django app when running ./manage.py shell with ipython as the REPL. Any time I use autocompletion or even just hit enter with any command, I get a bunch of these RuntimeWarnings.

My env: python==3.12.3, ipython==8.26.0, prompt-toolkit==3.0.47.

When I hit autocomplete, I get

/usr/local/lib/python3.12/asyncio/base_events.py:1972: RuntimeWarning: coroutine 'Buffer._create_completer_coroutine.<locals>.async_completer.<locals>.refresh_while_loading' was never awaited
  handle = self._ready.popleft()

When I hit enter with an empty prompt, I get

/home/djangousr/.local/lib/python3.12/site-packages/prompt_toolkit/application/application.py:1207: RuntimeWarning: coroutine 'Application.run_async.<locals>._run_async.<locals>.auto_flush_input' was never awaited
  await asyncio.wait(
RuntimeWarning: Enable tracemalloc to get the object allocation traceback

/home/djangousr/.local/lib/python3.12/site-packages/prompt_toolkit/key_binding/key_processor.py:414: RuntimeWarning: coroutine 'KeyProcessor._start_timeout.<locals>.wait' was never awaited
  self._flush_wait_task = app.create_background_task(wait())
RuntimeWarning: Enable tracemalloc to get the object allocation traceback

With tracemalloc enabled:

/home/djangousr/.local/lib/python3.12/site-packages/prompt_toolkit/application/application.py:1207: RuntimeWarning: coroutine 'Application.run_async.<locals>._run_async.<locals>.auto_flush_input' was never awaited
  await asyncio.wait(
Object allocated at (most recent call last):
  File "/home/djangousr/.local/lib/python3.12/site-packages/prompt_toolkit/application/application.py", lineno 704
    flush_task = self.create_background_task(auto_flush_input())

/home/djangousr/.local/lib/python3.12/site-packages/prompt_toolkit/key_binding/key_processor.py:414: RuntimeWarning: coroutine 'KeyProcessor._start_timeout.<locals>.wait' was never awaited
  self._flush_wait_task = app.create_background_task(wait())
Object allocated at (most recent call last):
  File "/home/djangousr/.local/lib/python3.12/site-packages/prompt_toolkit/key_binding/key_processor.py", lineno 414
    self._flush_wait_task = app.create_background_task(wait())

/usr/local/lib/python3.12/asyncio/base_events.py:1972: RuntimeWarning: coroutine 'Buffer._create_completer_coroutine.<locals>.async_completer.<locals>.refresh_while_loading' was never awaited
  handle = self._ready.popleft()
Object allocated at (most recent call last):
  File "/home/djangousr/.local/lib/python3.12/site-packages/prompt_toolkit/buffer.py", lineno 1734
    refresh_task = asyncio.ensure_future(refresh_while_loading())

It is very difficult to use shell (especially when debugging something with pdb), so any help would be greatly appreciated.

[tdickman]

I am facing the same errors as @dmedvinsky.

My env: python==3.12.5, ipython==8.10.0, prompt-toolkit=3.0.47

[swong-wavefin]

It's not a solution, but you can filter the warning by running filterwarnings in shell_plus

import warnings
warnings.filterwarnings("ignore", category=RuntimeWarning, message="coroutine")