Question

在anaconda中执行“ update -all”更新后，特别是将spyder升级为4.0.1之后，鉴于以下错误（更新之前，一切正常，），spyder和jupyter不再能够启动内核。

我尝试以管理员身份运行anaconda，jupyter和spyder。我已经分别重新安装了所有anaconda组件和anaconda本身。我还多次重启了电脑。 Windows7。

jupyter笔记本电脑出现错误：

Traceback (most recent call last):
  File "D:\Chris\Continuum\anaconda3\lib\site-packages\tornado\web.py", line 1699, in _execute
    result = await result
  File "D:\Chris\Continuum\anaconda3\lib\site-packages\tornado\gen.py", line 742, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "D:\Chris\Continuum\anaconda3\lib\site-packages\notebook\services\sessions\handlers.py", line 72, in post
    type=mtype))
  File "D:\Chris\Continuum\anaconda3\lib\site-packages\tornado\gen.py", line 735, in run
    value = future.result()
  File "D:\Chris\Continuum\anaconda3\lib\site-packages\tornado\gen.py", line 742, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "D:\Chris\Continuum\anaconda3\lib\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 "D:\Chris\Continuum\anaconda3\lib\site-packages\tornado\gen.py", line 735, in run
    value = future.result()
  File "D:\Chris\Continuum\anaconda3\lib\site-packages\tornado\gen.py", line 742, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "D:\Chris\Continuum\anaconda3\lib\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 "D:\Chris\Continuum\anaconda3\lib\site-packages\tornado\gen.py", line 735, in run
    value = future.result()
  File "D:\Chris\Continuum\anaconda3\lib\site-packages\tornado\gen.py", line 209, in wrapper
    yielded = next(result)
  File "D:\Chris\Continuum\anaconda3\lib\site-packages\notebook\services\kernels\kernelmanager.py", line 168, in start_kernel
    super(MappingKernelManager, self).start_kernel(**kwargs)
  File "D:\Chris\Continuum\anaconda3\lib\site-packages\jupyter_client\multikernelmanager.py", line 110, in start_kernel
    km.start_kernel(**kwargs)
  File "D:\Chris\Continuum\anaconda3\lib\site-packages\jupyter_client\manager.py", line 240, in start_kernel
    self.write_connection_file()
  File "D:\Chris\Continuum\anaconda3\lib\site-packages\jupyter_client\connect.py", line 476, in write_connection_file
    kernel_name=self.kernel_name
  File "D:\Chris\Continuum\anaconda3\lib\site-packages\jupyter_client\connect.py", line 141, in write_connection_file
    with secure_write(fname) as f:
  File "D:\Chris\Continuum\anaconda3\lib\contextlib.py", line 112, in __enter__
    return next(self.gen)
  File "D:\Chris\Continuum\anaconda3\lib\site-packages\jupyter_core\paths.py", line 424, in secure_write
    win32_restrict_file_to_user(fname)
  File "D:\Chris\Continuum\anaconda3\lib\site-packages\jupyter_core\paths.py", line 375, in win32_restrict_file_to_user
    win32security.SetFileSecurity(fname, win32security.DACL_SECURITY_INFORMATION, sd)
pywintypes.error: (5, 'SetFileSecurity', 'Access is denied.')

spyder的错误：

Traceback (most recent call last):
File "D:\Chris\Continuum\anaconda3\lib\site‑packages\spyder\plugins\ipythonconsole\plugin.py", line 1173, in create_kernel_manager_and_kernel_client
kernel_manager.start_kernel(stderr=stderr_handle, **kwargs)
File "D:\Chris\Continuum\anaconda3\lib\site‑packages\jupyter_client\manager.py", line 240, in start_kernel
self.write_connection_file()
File "D:\Chris\Continuum\anaconda3\lib\site‑packages\jupyter_client\connect.py", line 476, in write_connection_file
kernel_name=self.kernel_name
File "D:\Chris\Continuum\anaconda3\lib\site‑packages\jupyter_client\connect.py", line 141, in write_connection_file
with secure_write(fname) as f:
File "D:\Chris\Continuum\anaconda3\lib\contextlib.py", line 112, in __enter__
return next(self.gen)
File "D:\Chris\Continuum\anaconda3\lib\site‑packages\jupyter_core\paths.py", line 424, in secure_write
win32_restrict_file_to_user(fname)
File "D:\Chris\Continuum\anaconda3\lib\site‑packages\jupyter_core\paths.py", line 375, in win32_restrict_file_to_user
win32security.SetFileSecurity(fname, win32security.DACL_SECURITY_INFORMATION, sd)
pywintypes.error: (5, 'SetFileSecurity', 'Access is denied.')

Answer 1

我已经在Windows Server 2016的最新版本的jupyter-client上看到了相同的确切错误问题，在启动内核时抛出“访问被拒绝”错误。

据我所知：Jupyter正在尝试对用户文件夹中的文件（例如C:\Users\user.name\AppData\Roaming\jupyter）设置权限。由于某种原因，我们没有编辑该文件夹中文件权限的权限-因此Jupyter也没有权限，并且失败。可以通过告诉Jupyter允许这些文件“不安全”来解决此问题。在命令提示符下，在激活环境之后并启动Jupyter之前，请执行以下操作：

set JUPYTER_ALLOW_INSECURE_WRITES=1

然后：

jupyter notebook

现在希望您的内核可以启动。

这个GitHub问题与找到解决方案最相关：https://github.com/jupyter/notebook/issues/4907#issuecomment-588536184

Jupyter：在spyder / jupyter笔记本电脑中启动内核时，访问被拒绝错误

1 个答案: