Kernel error trigerred by an asyncio conflict with SpyderKernelApp

Problem Description

Since the update to 5.1.5 a patch software called nest_asyncio that deals with async issues has stopped working due to a conflict that Spyder raises when it is run. The nest_asyncio code is on github and it patches asyncio to allow nested event loops. I upgraded from Spyder ver 5.0.5 (when everything was working fine) now going back to version Spyder 5.0.5 doesn’t solve the problem because some files have been altered with the upgrade to 5.1.5.

What steps reproduce the problem?

1. pip install nest_asyncio (Install in terminal window)
2. import nest_asyncio
3. nest_asyncio.apply()

What is the expected output?

It solves an API issue with nested event loops. It should not raise any error messages.

Paste Traceback/Error Below (if applicable)

[SpyderKernelApp] ERROR | Exception in message handler: Traceback (most recent call last): File “C:\Users\ynika\anaconda3\lib\site-packages\spyder_kernels\comms\frontendcomm.py”, line 164, in poll_one asyncio.run(handler(out_stream, ident, msg)) File “C:\Users\ynika\anaconda3\lib\site-packages\nest_asyncio.py”, line 32, in run return loop.run_until_complete(future) File “C:\Users\ynika\anaconda3\lib\site-packages\nest_asyncio.py”, line 60, in run_until_complete f = asyncio.ensure_future(future, loop=self) File “C:\Users\ynika\anaconda3\lib\asyncio\tasks.py”, line 680, in ensure_future raise TypeError('An asyncio.Future, a coroutine or an awaitable is ’ TypeError: An asyncio.Future, a coroutine or an awaitable is required [SpyderKernelApp] ERROR | Exception in message handler:

PASTE TRACEBACK HERE
Traceback (most recent call last):
  File "C:\Users\ynika\anaconda3\lib\site-packages\spyder_kernels\comms\frontendcomm.py", line 164, in poll_one
    asyncio.run(handler(out_stream, ident, msg))
  File "C:\Users\ynika\anaconda3\lib\site-packages\nest_asyncio.py", line 32, in run
    return loop.run_until_complete(future)
  File "C:\Users\ynika\anaconda3\lib\site-packages\nest_asyncio.py", line 60, in run_until_complete
    f = asyncio.ensure_future(future, loop=self)
  File "C:\Users\ynika\anaconda3\lib\asyncio\tasks.py", line 680, in ensure_future
    raise TypeError('An asyncio.Future, a coroutine or an awaitable is '
TypeError: An asyncio.Future, a coroutine or an awaitable is required

## Versions
* Spyder version:  5.1.5
* Python version:  3.9.7
* Qt version: 5.9.7
* PyQt version: 5.9.2
* Operating System name/version: Win 10 Pro

### Dependencies

# Mandatory:
atomicwrites >=1.2.0          :  1.4.0 (OK)
chardet >=2.0.0               :  4.0.0 (OK)
cloudpickle >=0.5.0           :  2.0.0 (OK)
cookiecutter >=1.6.0          :  1.7.3 (OK)
diff_match_patch >=20181111   :  20200713 (OK)
intervaltree                  :  None (OK)
IPython >=7.6.0               :  7.27.0 (OK)
jedi >=0.17.2;<0.19.0         :  0.18.0 (OK)
jsonschema >=3.2.0            :  3.2.0 (OK)
keyring >=17.0.0              :  23.2.1 (OK)
nbconvert >=4.0               :  6.1.0 (OK)
numpydoc >=0.6.0              :  1.1.0 (OK)
paramiko >=2.4.0              :  2.7.2 (OK)
parso >=0.7.0;<0.9.0          :  0.8.2 (OK)
pexpect >=4.4.0               :  4.8.0 (OK)
pickleshare >=0.4             :  0.7.5 (OK)
psutil >=5.3                  :  5.8.0 (OK)
pygments >=2.0                :  2.10.0 (OK)
pylint >=2.5.0;<2.10.0        :  2.9.6 (OK)
pyls_spyder >=0.4.0           :  0.4.0 (OK)
pylsp >=1.2.2;<1.3.0          :  1.2.2 (OK)
pylsp_black >=1.0.0           :  None (OK)
qdarkstyle =3.0.2             :  3.0.2 (OK)
qstylizer >=0.1.10            :  0.2.1 (OK)
qtawesome >=1.0.2             :  1.0.3 (OK)
qtconsole >=5.1.0             :  5.1.1 (OK)
qtpy >=1.5.0                  :  1.11.1 (OK)
rtree >=0.9.7                 :  0.9.7 (OK)
setuptools >=49.6.0           :  58.0.4 (OK)
sphinx >=0.6.6                :  4.2.0 (OK)
spyder_kernels >=2.1.1;<2.2.0 :  2.1.1 (OK)
textdistance >=4.2.0          :  4.2.1 (OK)
three_merge >=0.1.1           :  0.1.1 (OK)
watchdog                      :  2.1.5 (OK)
zmq >=17                      :  22.2.1 (OK)

# Optional:
cython >=0.21                 :  0.29.24 (OK)
matplotlib >=2.0.0            :  3.4.3 (OK)
numpy >=1.7                   :  1.19.3 (OK)
pandas >=1.1.1                :  1.3.3 (OK)
scipy >=0.17.0                :  1.7.1 (OK)
sympy >=0.7.3                 :  1.8 (OK)

[ElizabethYHL]

@ccordoba12 Thks for your help! I solve the problem by creating a new environment.

[ccordoba12]

You have two options:

1. Use our Windows installer, which you can find here.

2. Create a new environment with conda-forge packages. For that, please close Spyder, open the Anaconda Prompt and run the following commands there:

    conda create -n spyder-cf -c conda-forge spyder
    conda activate spyder-cf
    spyder
   

Unfortunately, you need to reinstall all modules you already have in both cases.