Jupyter笔记本电脑连接失败，内核无法启动

分类：编程问答

如何解决Jupyter笔记本电脑连接失败，内核无法启动

Jupyter一直运行良好，现在我的所有文件都无法运行，似乎都出现了相同的错误。卡在“内核启动”上，然后收到“连接失败”的消息。我看到其他人遇到了这个问题，尝试了几件事，但是到目前为止，没有任何东西可以解决问题。我不确定是什么原因引起的，在发生这种情况之前，我遇到了模块无法加载的问题，并一直试图解决此问题。我以为我撤消了所有可能导致那里问题的事情。

对于当前问题，我尝试过：降低龙卷风的等级，强制重新安装jupyter，更新jupyter，升级笔记本，重置jupyter笔记本的默认配置，安装提示工具包。

看着外壳，似乎json解码可能有问题，还有importerror和catch_config_error。它是这样的：

[I 14:01:21.893 NotebookApp] 302 GET /?token=c9640de1d70d312a40a784911bcc93a8d2a0a7d870cfbd5b (::1) 1.00ms
[I 14:01:45.774 NotebookApp] Kernel started: 8fe05eec-872e-465b-999c-720f7fcce3e3,name: python3
Traceback (most recent call last):
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.7_3.7.2544.0_x64__qbz5n2kfra8p0\lib\runpy.py",line 193,in _run_module_as_main
    "__main__",mod_spec)
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.7_3.7.2544.0_x64__qbz5n2kfra8p0\lib\runpy.py",line 85,in _run_code
    exec(code,run_globals)
  File "C:\Users\xxx\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0\LocalCache\local-packages\Python37\site-packages\ipykernel_launcher.py",line 16,in <module>
    app.launch_new_instance()
  File "C:\Users\xxx\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0\LocalCache\local-packages\Python37\site-packages\traitlets\config\application.py",line 663,in launch_instance
    app.initialize(argv)
  File "<decorator-gen-125>",line 2,in initialize
  File "C:\Users\xxx\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0\LocalCache\local-packages\Python37\site-packages\traitlets\config\application.py",line 87,in catch_config_error
    return method(app,*args,**kwargs)
  File "C:\Users\xxx\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0\LocalCache\local-packages\Python37\site-packages\ipykernel\kernelapp.py",line 570,in initialize
    self.write_connection_file()
  File "C:\Users\xxx\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0\LocalCache\local-packages\Python37\site-packages\ipykernel\kernelapp.py",line 232,in write_connection_file
    iopub_port=self.iopub_port,control_port=self.control_port)
  File "C:\Users\xxx\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0\LocalCache\local-packages\Python37\site-packages\jupyter_client\connect.py",line 138,in write_connection_file
    with secure_write(fname) as f:
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.7_3.7.2544.0_x64__qbz5n2kfra8p0\lib\contextlib.py",line 112,in __enter__
    return next(self.gen)
  File "C:\Users\xxx\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0\LocalCache\local-packages\Python37\site-packages\jupyter_core\paths.py",line 435,in secure_write
    win32_restrict_file_to_user(fname)
  File "C:\Users\xxx\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0\LocalCache\local-packages\Python37\site-packages\jupyter_core\paths.py",line 361,in win32_restrict_file_to_user
    import win32api
ImportError: DLL load failed: The specified module could not be found.
[I 14:01:48.767 NotebookApp] KernelRestarter: restarting kernel (1/5),new random ports
[IPKernelApp] ERROR | Failed to load connection file: 'C:\\Users\\xxx\\AppData\\Roaming\\jupyter\\runtime\\kernel-8fe05eec-872e-465b-999c-720f7fcce3e3.json'
Traceback (most recent call last):
  File "C:\Users\xxx\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0\LocalCache\local-packages\Python37\site-packages\ipykernel\kernelapp.py",line 257,in init_connection_file
    self.load_connection_file()
  File "C:\Users\xxx\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0\LocalCache\local-packages\Python37\site-packages\jupyter_client\connect.py",line 496,in load_connection_file
    info = json.load(f)
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.7_3.7.2544.0_x64__qbz5n2kfra8p0\lib\json\__init__.py",line 296,in load
    parse_constant=parse_constant,object_pairs_hook=object_pairs_hook,**kw)
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.7_3.7.2544.0_x64__qbz5n2kfra8p0\lib\json\__init__.py",line 348,in loads
    return _default_decoder.decode(s)
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.7_3.7.2544.0_x64__qbz5n2kfra8p0\lib\json\decoder.py",line 337,in decode
    obj,end = self.raw_decode(s,idx=_w(s,0).end())
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.7_3.7.2544.0_x64__qbz5n2kfra8p0\lib\json\decoder.py",line 355,in raw_decode
    raise JSONDecodeError("Expecting value",s,err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
[I 14:01:51.868 NotebookApp] KernelRestarter: restarting kernel (2/5),err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
[I 14:01:54.974 NotebookApp] KernelRestarter: restarting kernel (3/5),err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
[I 14:01:58.079 NotebookApp] KernelRestarter: restarting kernel (4/5),err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
[W 14:02:01.416 NotebookApp] KernelRestarter: restart failed
[W 14:02:01.417 NotebookApp] Kernel 8fe05eec-872e-465b-999c-720f7fcce3e3 died,removing from map.
[W 14:02:46.482 NotebookApp] Timeout waiting for kernel_info reply from 8fe05eec-872e-465b-999c-720f7fcce3e3
[E 14:02:46.483 NotebookApp] Error opening stream: HTTP 404: Not Found (Kernel does not exist: 8fe05eec-872e-465b-999c-720f7fcce3e3)
[W 14:02:47.512 NotebookApp] 404 GET /api/kernels/8fe05eec-872e-465b-999c-720f7fcce3e3/channels?session_id=902ee2ab61ac42198c00ba50ed95d22a (::1): Kernel does not exist: 8fe05eec-872e-465b-999c-720f7fcce3e3
[W 14:02:47.521 NotebookApp] 404 GET /api/kernels/8fe05eec-872e-465b-999c-720f7fcce3e3/channels?session_id=902ee2ab61ac42198c00ba50ed95d22a (::1) 10.01ms referer=None
[W 14:02:49.556 NotebookApp] Replacing stale connection: 8fe05eec-872e-465b-999c-720f7fcce3e3:902ee2ab61ac42198c00ba50ed95d22a

在帮助解决此问题方面，任何帮助都将受到高度赞赏。

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