jupyterlab 使用jupyter-scheduler 发生This event loop is already running

文章描述了一个Python编程中遇到的问题,具体是nbclient库在使用时抛出了RuntimeError:Thiseventloopisalreadyrunning的错误。解决方案是通过升级nbclient库至最新版本(0.7.2)来修复问题。

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查看一下报错原因:

 File "/home/hadoop/mambaforge/lib/python3.10/site-packages/nbclient/client.py", line 561, in setup_kernel
    self.start_new_kernel(**kwargs)
  File "/home/hadoop/mambaforge/lib/python3.10/site-packages/nbclient/util.py", line 84, in wrapped
    return just_run(coro(*args, **kwargs))
  File "/home/hadoop/mambaforge/lib/python3.10/site-packages/nbclient/util.py", line 62, in just_run
    return loop.run_until_complete(coro)
  File "/home/hadoop/mambaforge/lib/python3.10/asyncio/base_events.py", line 625, in run_until_complete
    self._check_running()
  File "/home/hadoop/mambaforge/lib/python3.10/asyncio/base_events.py", line 584, in _check_running
    raise RuntimeError('This event loop is already running')
RuntimeError: This event loop is already running

只需要更新nbclient即可

pip install nbclient  --upgrade

原来为:nbclient                          0.5.13

升级后为:

nbclient                 0.7.2
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