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Error on nest_asyncio.apply()

See original GitHub issue

Problem Description

I’m trying to set up a new Mac and get some existing projects running. Specifically, I’m trying to use nest_asyncio in Spyder and getting an error on nest_asyncio.apply() as well as inability to restart the kernel after applying.

What steps reproduce the problem?

import asyncio
import nest_asyncio
nest_asyncio.apply()

Paste Traceback/Error Below (if applicable)

And I get the following error message:

[SpyderKernelApp] ERROR | Exception in message handler:
Traceback (most recent call last):
  File "/Users/me/opt/anaconda3/lib/python3.9/site-packages/spyder_kernels/comms/frontendcomm.py", line 164, in poll_one
    asyncio.run(handler(out_stream, ident, msg))
  File "/Users/me/opt/anaconda3/lib/python3.9/site-packages/nest_asyncio.py", line 33, in run
    task = asyncio.ensure_future(main)
  File "/Users/me/opt/anaconda3/lib/python3.9/asyncio/tasks.py", line 677, 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:
Traceback (most recent call last):
  File "/Users/me/opt/anaconda3/lib/python3.9/site-packages/spyder_kernels/comms/frontendcomm.py", line 164, in poll_one
    asyncio.run(handler(out_stream, ident, msg))
  File "/Users/me/opt/anaconda3/lib/python3.9/site-packages/nest_asyncio.py", line 33, in run
    task = asyncio.ensure_future(main)
  File "/Users/me/opt/anaconda3/lib/python3.9/asyncio/tasks.py", line 677, 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

The error appears to be unique to Spyder. I don’t see any errors when I run it in the terminal, Jupyter notebook, QT console, etc.

Versions

Spyder version: 5.1.5
Python version: 3.9.12

Issue Analytics

State:
Created a year ago
Comments:5 (2 by maintainers)

Top GitHub Comments

1reaction

ccordoba12commented, May 15, 2022

Nop, we don’t have any control over that.

I’m going to close this issue because the bug is solved on our side.

0reactions

jhogg11commented, May 23, 2022

Found the answer. Instead of installing pyqtwebengine through pip, it needed to be installed through conda-forge:

conda install -c conda-forge pyqtwebengine

From one of the comments here: https://stackoverflow.com/questions/71580652/how-to-solve-error-while-installing-pyqtwebengine

@ccordoba12 - Thanks again for your help.

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