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Anaconda更新后Jupyter笔记本死机内核

jupyter-notebook anaconda kernel python

default_settings · 技术社区 · 6 年前

我遇到了以下问题。更新Anaconda后,因为导入skimage时出错。在Jupyter Notebook中的一个项目中,io出现了一个更大的错误—内核死机。目前,我无法启动项目,因为Jupyter给出的错误如下:

Copy/paste this URL into your browser when you connect for the first time,
to login with a token:
    http://localhost:8888/? 
token=aaf85a5e18489792c87cce65d7a53a0263cd5c08cc7248b 6
[I 00:55:13.451 NotebookApp] Accepting one-time-token-authenticated 
connection from ::1
[I 00:55:31.607 NotebookApp] Kernel started: 608d2190-59e6-4888-b09a- 
e616f67bd5b4
Traceback (most recent call last):
ERROR:tornado.general:Uncaught exception in ZMQStream callback
Traceback (most recent call last):
File "C:\Program Files\Anaconda3\lib\site- 
packages\zmq\eventloop\zmqstream.py", line 432, in _run_callback
callback(*args, **kwargs)
File "C:\Program Files\Anaconda3\lib\site- 
packages\tornado\stack_context.py", line 276, in null_wrapper
return fn(*args, **kwargs)
File "C:\Program Files\Anaconda3\lib\site-packages\ipykernel\kernelbase.py", 
line 283, in dispatcher
return self.dispatch_shell(stream, msg)
File "C:\Program Files\Anaconda3\lib\site-packages\ipykernel\kernelbase.py", 
line 233, in dispatch_shell
self.pre_handler_hook()
File "C:\Program Files\Anaconda3\lib\site-packages\ipykernel\kernelbase.py", 
line 248, in pre_handler_hook
self.saved_sigint_handler = signal(SIGINT, default_int_handler)
File "C:\Program Files\Anaconda3\lib\signal.py", line 47, in signal
handler = _signal.signal(_enum_to_int(signalnum), _enum_to_int(handler))
ValueError: signal only works in main thread  File "C:\Program 
Files\Anaconda3\lib\runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)

File "C:\Program Files\Anaconda3\lib\runpy.py", line 85, in _run_code
exec(code, run_globals)
File "C:\Program Files\Anaconda3\lib\site-packages\ipykernel_launcher.py", 
line 16, in <module>
app.launch_new_instance()
File "C:\Program Files\Anaconda3\lib\site- 
packages\traitlets\config\application.py", line 658, in launch_instance
app.start()
File "C:\Program Files\Anaconda3\lib\site-packages\ipykernel\kernelapp.py", 
line 477, in start
ioloop.IOLoop.instance().start()
File "C:\Program Files\Anaconda3\lib\site- 
packages\tornado\platform\asyncio.py", line 112, in start
self.asyncio_loop.run_forever()
ERROR:tornado.general:Uncaught exception in zmqstream callback
Traceback (most recent call last):
File "C:\Program Files\Anaconda3\lib\site- 
packages\zmq\eventloop\zmqstream.py", line 450, in _handle_events
self._handle_recv()
File "C:\Program Files\Anaconda3\lib\site- 
packages\zmq\eventloop\zmqstream.py", line 480, in _handle_recv
self._run_callback(callback, msg)
File "C:\Program Files\Anaconda3\lib\site- 
packages\zmq\eventloop\zmqstream.py", line 432, in _run_callback
callback(*args, **kwargs)
File "C:\Program Files\Anaconda3\lib\site- 
packages\tornado\stack_context.py", line 276, in null_wrapper
return fn(*args, **kwargs)
File "C:\Program Files\Anaconda3\lib\site-packages\ipykernel\kernelbase.py", 
line 283, in dispatcher
return self.dispatch_shell(stream, msg)
File "C:\Program Files\Anaconda3\lib\site-packages\ipykernel\kernelbase.py", 
line 233, in dispatch_shell
self.pre_handler_hook()
File "C:\Program Files\Anaconda3\lib\site-packages\ipykernel\kernelbase.py", 
line 248, in pre_handler_hook
self.saved_sigint_handler = signal(SIGINT, default_int_handler)
File "C:\Program Files\Anaconda3\lib\signal.py", line 47, in signal
handler = _signal.signal(_enum_to_int(signalnum), _enum_to_int(handler))
ValueError: signal only works in main thread  File "C:\Program   
Files\Anaconda3\lib\asyncio\base_events.py", line 409, in run_forever

10 回复 | 直到 6 年前

anothernode David Joel Lukombo 6 年前

以下程序包是 全新的 安装jupyter笔记本电脑(5.6版),带有 conda ,因此 tornado is 5.1。

ipykernel:          4.8.2-py36_0       conda-forge
ipywidgets:         7.4.0-py_0         conda-forge
jupyter:            1.0.0-py_1         conda-forge
jupyter_client:     5.2.3-py_1         conda-forge
jupyter_console:    5.2.0-py36_0       conda-forge
nbconvert:          5.3.1-py_1         conda-forge
notebook:           5.6.0-py36_0       conda-forge
qtconsole:          4.3.1-py36_0       conda-forge
terminado:          0.8.1-py36_0       conda-forge
tornado:            5.1-py36h470a237_1 conda-forge
widgetsnbextension: 3.4.0-py36_0       conda-forge

要解决此问题,可以手动安装最新版本的 龙卷风 :

conda install tornado --update

或者从头开始重新安装jupyter笔记本:

conda uninstall jupyter tornado
conda install jupyter

Azhar Khan Chirag Dave 2 年前

对我来说,这个问题 ipykernel 版本不匹配。我已安装 google-colab 这降低了我的 ipykernel公司 。卸载后 谷歌colab 和升级 ipykernel公司 到目前为止,问题已经解决了。

pip uninstall google-colab

pip install --upgrade ipykernel

Stephen Kennedy annamataws 6 年前

升级ipykernel对我有用

conda upgrade ipykernel

default_settings 6 年前

在尝试了很多“快速修复”(卸载和安装Jupyter软件包等)之后,唯一的方法就是从一开始就卸载和安装Anaconda。如果您不怕从头开始安装所有软件包(在我的情况下没有必要),那么这个解决方案是最好的。

ROHIT GHOSH 6 年前

我认为这里的问题是因为tornado版本不匹配。你应该降级到旧版本的tornado来解决这个问题。至少,这对我起了作用。这应该可以奏效。

conda install tornado=4.5.3

Simbarashe Timothy Motsi clayton.nichols 6 年前

我在使用Jupyter实验室时也遇到了问题,我用命令升级了版本。
pip install jupyterlab âupgrade
避免在系统范围内安装
pip install jupyterlab âupgrade âuser

ashish saxena 5 年前

在尝试各种解决方案、升级和降级各种依赖项之后 conda upgrade --all 为我工作。

paul xiong 4 年前

conda升级--对我来说一切正常

cdutra 4 年前

只有

python -m ipykernel install --user

和

python3 -m ipykernel install --user

在这里工作。

William Le 3 年前

如果您在Vscode中使用Jupyter笔记本,

卸载所有conda软件包

安装Anaconda Clean以移除conda软件包

conda install anaconda-clean

这将删除您的所有conda软件包

anaconda-clean --yes

然后卸载Vscode中的Jupyter扩展,关闭当前的Jupyter notebook选项卡,重新打开Jupyter notebook文件,运行它并在Vscode中的弹出窗口中重新安装Jupyter。

这对我有用。