Jupyter Notebook：右侧的内核错误

Question

我刚刚安装了 Anaconda 并使用 jupyter notebook 命令通过命令行运行 Jupyter Notebook。但是，我面临一个问题。在右上角，我看到 内核错误。 当我点击内核错误时，我看到这些行：

Traceback (most recent call last):
  File "C:\Users\Shawn\AppData\Roaming\Python\Python37\site-packages\tornado\web.py", line 1699, in _execute
    result = await result
  File "C:\Users\Shawn\AppData\Roaming\Python\Python37\site-packages\tornado\gen.py", line 742, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "C:\Users\Shawn\AppData\Roaming\Python\Python37\site-packages\notebook\services\sessions\handlers.py", line 72, in post
    type=mtype))
  File "C:\Users\Shawn\AppData\Roaming\Python\Python37\site-packages\tornado\gen.py", line 735, in run
    value = future.result()
  File "C:\Users\Shawn\AppData\Roaming\Python\Python37\site-packages\tornado\gen.py", line 742, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "C:\Users\Shawn\AppData\Roaming\Python\Python37\site-packages\notebook\services\sessions\sessionmanager.py", line 88, in create_session
    kernel_id = yield self.start_kernel_for_session(session_id, path, name, type, kernel_name)
  File "C:\Users\Shawn\AppData\Roaming\Python\Python37\site-packages\tornado\gen.py", line 735, in run
    value = future.result()
  File "C:\Users\Shawn\AppData\Roaming\Python\Python37\site-packages\tornado\gen.py", line 742, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "C:\Users\Shawn\AppData\Roaming\Python\Python37\site-packages\notebook\services\sessions\sessionmanager.py", line 101, in start_kernel_for_session
    self.kernel_manager.start_kernel(path=kernel_path, kernel_name=kernel_name)
  File "C:\Users\Shawn\AppData\Roaming\Python\Python37\site-packages\tornado\gen.py", line 735, in run
    value = future.result()
  File "C:\Users\Shawn\AppData\Roaming\Python\Python37\site-packages\tornado\gen.py", line 209, in wrapper
    yielded = next(result)
  File "C:\Users\Shawn\AppData\Roaming\Python\Python37\site-packages\notebook\services\kernels\kernelmanager.py", line 168, in start_kernel
    super(MappingKernelManager, self).start_kernel(**kwargs)
  File "C:\ProgramData\Anaconda3\lib\site-packages\jupyter_client\multikernelmanager.py", line 158, in start_kernel
    km.start_kernel(**kwargs)
  File "C:\ProgramData\Anaconda3\lib\site-packages\jupyter_client\manager.py", line 301, in start_kernel
    kernel_cmd, kw = self.pre_start_kernel(**kw)
  File "C:\ProgramData\Anaconda3\lib\site-packages\jupyter_client\manager.py", line 248, in pre_start_kernel
    self.write_connection_file()
  File "C:\ProgramData\Anaconda3\lib\site-packages\jupyter_client\connect.py", line 474, in write_connection_file
    kernel_name=self.kernel_name
  File "C:\ProgramData\Anaconda3\lib\site-packages\jupyter_client\connect.py", line 138, in write_connection_file
    with secure_write(fname) as f:
  File "C:\ProgramData\Anaconda3\lib\contextlib.py", line 112, in __enter__
    return next(self.gen)
  File "C:\Users\Shawn\AppData\Roaming\Python\Python37\site-packages\jupyter_core\paths.py", line 424, in secure_write
    win32_restrict_file_to_user(fname)
  File "C:\Users\Shawn\AppData\Roaming\Python\Python37\site-packages\jupyter_core\paths.py", line 359, in win32_restrict_file_to_user
    import win32api
ImportError: DLL load failed: %1 is not a valid Win32 application.

我无法在 Jupyter Notebook 上运行任何 Python 代码，因为我继续收到该错误。

我已经在 Stack Overflow 上经历了几个小时的无数线程。但我无法解决问题。 请帮我解决问题。我正在用 Python 做一门关于数据科学的课程。如果不解决此问题，我将无法继续前进。

更新 1： 我访问过这个Github thread 并尝试使用以下命令：

conda install -c conda-forge pywin32
conda install -c anaconda jupyter_client
conda install -c conda-forge jupyter_core
pip install --upgrade pywin32==224

但是，问题并未解决。相反，我收到了一个新错误，

ImportError: DLL load failed: The specified procedure could not be found.

这真是令人沮丧！

Answer 1

试试这个方法，我修好了我的 jupyter。
同样的错误site-packages\tornado

1. 命令

    jupyter kernelspec list

1. 从显示的结果

     Available kernels:  
      python3    D:\Programs\Anaconda3\share\jupyter\kernels\python3

1. 打开文件夹，编辑kernel.json

{
    "argv": [
        "D:\\Programs\\Anaconda3\\python.exe",  //change to your correct path
        "-m",
        "ipykernel_launcher",
        "-f",
        "{connection_file}"
    ],
    "display_name": "Python 3",
    "language": "python"
}

4. 重启jupyter，就OK了。

Answer 2

您是否尝试从终端打开 anaconda 导航器，然后创建一个环境并在该环境中安装 jupyter 笔记本，然后从导航器打开 jupyter 笔记本

Answer 3

好的。我已经设法解决了这个问题。我必须编写这些命令：

conda install -c conda-forge pywin32
conda install -c anaconda jupyter_client
conda install -c conda-forge jupyter_core
pip install --upgrade pywin32==224

然后我得到一个错误。

import win32api pywin32
ImportError: DLL load failed: The specified procedure could not be found.

我通过编写从github thread 得到的这个命令来解决这个问题：

conda install pywin32

现在，问题已经完全解决了！