Anaconda Jupyter笔记本未连接到内核

这在2019年3月7日是一个问题，jupyter笔记本在2019年3月6日之前一直工作正常

今天它正在展示

无法建立到笔记本服务器的连接。笔记本将继续尝试重新连接。检查网络连接或笔记本服务器配置。

我试图卸载tornado，但它显示tornado没有安装

然后我安装了tornado 5.1.1，运行良好，但问题仍然存在

我的Ubuntu是16.04 LTS，系统是Intel®Core™ i5-4570 CPU@3.20GHz×4

昨天我已经完成了sudo-apt-get-install-update和sudo-apt-get-upgrade命令。我现在删除了昨天完成的更新，但问题仍然存在

终端窗口中出现的错误是：

dstlab2@dstlab2-Veriton-M200-H81:~$ jupyter-notebook[I 09:26:02.991 NotebookApp] Writing notebook server cookie secret to /run/user/1000/jupyter/notebook_cookie_secret
[I 09:26:04.290 NotebookApp] JupyterLab extension loaded from /home/dstlab2/anaconda3/lib/python3.7/site-packages/jupyterlab
[I 09:26:04.290 NotebookApp] JupyterLab application directory is /home/dstlab2/anaconda3/share/jupyter/lab
[I 09:26:04.293 NotebookApp] Serving notebooks from local directory: /home/dstlab2
[I 09:26:04.293 NotebookApp] The Jupyter Notebook is running at:
[I 09:26:04.293 NotebookApp] http://localhost:8888/?token=a607d9176951f9f7c52829af223e2de939881f925a4f0099
[I 09:26:04.293 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 09:26:04.354 NotebookApp] 

    Copy/paste this URL into your browser when you connect for the first time,
    to login with a token:
        http://localhost:8888/?token=a607d9176951f9f7c52829af223e2de939881f925a4f0099
[I 09:26:09.924 NotebookApp] Accepting one-time-token-authenticated connection from 127.0.0.1
[I 09:26:31.426 NotebookApp] Kernel started: 5c1a7abe-8a46-4774-b878-2f93bd60714e
Traceback (most recent call last):
  File "/home/dstlab2/anaconda3/lib/python3.7/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/dstlab2/anaconda3/lib/python3.7/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/ipykernel_launcher.py", line 15, in <module>
    from ipykernel import kernelapp as app
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/ipykernel/__init__.py", line 2, in <module>
    from .connect import *
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/ipykernel/connect.py", line 13, in <module>
    from IPython.core.profiledir import ProfileDir
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/__init__.py", line 54, in <module>
    from .core.application import Application
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/core/application.py", line 25, in <module>
    from IPython.core import release, crashhandler
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/core/crashhandler.py", line 27, in <module>
    from IPython.core import ultratb
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/core/ultratb.py", line 115, in <module>
    from IPython.core import debugger
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/core/debugger.py", line 47, in <module>
    from pdb import Pdb as OldPdb
  File "/home/dstlab2/anaconda3/lib/python3.7/pdb.py", line 76, in <module>
    import code
  File "/home/dstlab2/code.py", line 36
    'Swig::DirectorMethodException'
    ^
IndentationError: expected an indented block
[I 09:26:34.345 NotebookApp] KernelRestarter: restarting kernel (1/5), new random ports
Traceback (most recent call last):
  File "/home/dstlab2/anaconda3/lib/python3.7/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/dstlab2/anaconda3/lib/python3.7/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/ipykernel_launcher.py", line 15, in <module>
    from ipykernel import kernelapp as app
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/ipykernel/__init__.py", line 2, in <module>
    from .connect import *
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/ipykernel/connect.py", line 13, in <module>
    from IPython.core.profiledir import ProfileDir
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/__init__.py", line 54, in <module>
    from .core.application import Application
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/core/application.py", line 25, in <module>
    from IPython.core import release, crashhandler
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/core/crashhandler.py", line 27, in <module>
    from IPython.core import ultratb
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/core/ultratb.py", line 115, in <module>
    from IPython.core import debugger
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/core/debugger.py", line 47, in <module>
    from pdb import Pdb as OldPdb
  File "/home/dstlab2/anaconda3/lib/python3.7/pdb.py", line 76, in <module>
    import code
  File "/home/dstlab2/code.py", line 36
    'Swig::DirectorMethodException'
    ^
IndentationError: expected an indented block
[I 09:26:37.353 NotebookApp] KernelRestarter: restarting kernel (2/5), new random ports
Traceback (most recent call last):
  File "/home/dstlab2/anaconda3/lib/python3.7/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/dstlab2/anaconda3/lib/python3.7/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/ipykernel_launcher.py", line 15, in <module>
    from ipykernel import kernelapp as app
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/ipykernel/__init__.py", line 2, in <module>
    from .connect import *
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/ipykernel/connect.py", line 13, in <module>
    from IPython.core.profiledir import ProfileDir
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/__init__.py", line 54, in <module>
    from .core.application import Application
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/core/application.py", line 25, in <module>
    from IPython.core import release, crashhandler
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/core/crashhandler.py", line 27, in <module>
    from IPython.core import ultratb
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/core/ultratb.py", line 115, in <module>
    from IPython.core import debugger
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/core/debugger.py", line 47, in <module>
    from pdb import Pdb as OldPdb
  File "/home/dstlab2/anaconda3/lib/python3.7/pdb.py", line 76, in <module>
    import code
  File "/home/dstlab2/code.py", line 36
    'Swig::DirectorMethodException'
    ^
IndentationError: expected an indented block
[I 09:26:40.362 NotebookApp] KernelRestarter: restarting kernel (3/5), new random ports
Traceback (most recent call last):
  File "/home/dstlab2/anaconda3/lib/python3.7/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/dstlab2/anaconda3/lib/python3.7/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/ipykernel_launcher.py", line 15, in <module>
    from ipykernel import kernelapp as app
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/ipykernel/__init__.py", line 2, in <module>
    from .connect import *
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/ipykernel/connect.py", line 13, in <module>
    from IPython.core.profiledir import ProfileDir
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/__init__.py", line 54, in <module>
    from .core.application import Application
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/core/application.py", line 25, in <module>
    from IPython.core import release, crashhandler
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/core/crashhandler.py", line 27, in <module>
    from IPython.core import ultratb
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/core/ultratb.py", line 115, in <module>
    from IPython.core import debugger
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/core/debugger.py", line 47, in <module>
    from pdb import Pdb as OldPdb
  File "/home/dstlab2/anaconda3/lib/python3.7/pdb.py", line 76, in <module>
    import code
  File "/home/dstlab2/code.py", line 36
    'Swig::DirectorMethodException'
    ^
IndentationError: expected an indented block
[I 09:26:43.374 NotebookApp] KernelRestarter: restarting kernel (4/5), new random ports
Traceback (most recent call last):
  File "/home/dstlab2/anaconda3/lib/python3.7/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/dstlab2/anaconda3/lib/python3.7/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/ipykernel_launcher.py", line 15, in <module>
    from ipykernel import kernelapp as app
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/ipykernel/__init__.py", line 2, in <module>
    from .connect import *
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/ipykernel/connect.py", line 13, in <module>
    from IPython.core.profiledir import ProfileDir
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/__init__.py", line 54, in <module>
    from .core.application import Application
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/core/application.py", line 25, in <module>
    from IPython.core import release, crashhandler
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/core/crashhandler.py", line 27, in <module>
    from IPython.core import ultratb
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/core/ultratb.py", line 115, in <module>
    from IPython.core import debugger
  File "/home/dstlab2/anaconda3/lib/python3.7/site-packages/IPython/core/debugger.py", line 47, in <module>
    from pdb import Pdb as OldPdb
  File "/home/dstlab2/anaconda3/lib/python3.7/pdb.py", line 76, in <module>
    import code
  File "/home/dstlab2/code.py", line 36
    'Swig::DirectorMethodException'
    ^
IndentationError: expected an indented block
[W 09:26:46.387 NotebookApp] KernelRestarter: restart failed
[W 09:26:46.388 NotebookApp] Kernel 5c1a7abe-8a46-4774-b878-2f93bd60714e died, removing from map.
[W 09:26:52.810 NotebookApp] Replacing stale connection: 5c1a7abe-8a46-4774-b878-2f93bd60714e:cc118d38384143ce89970738bb0b0708

dstlab2@dstlab2-Veriton-M200-H81:~$jupyter笔记本[I 09:26:02.991 NotebookApp]将笔记本服务器cookie机密写入/run/user/1000/jupyter/notebook\u cookie\u机密
[I 09:26:04.290 NotebookApp]JupyterLab扩展从/home/dstlab 2/anaconda3/lib/python3.7/site-packages/JupyterLab加载
[I 09:26:04.290 NotebookApp]JupyterLab应用程序目录是/home/dstlab 2/anaconda3/share/jupyter/lab
[I 09:26:04.293 NotebookApp]从本地目录提供笔记本服务：/home/dstlab 2
[I 09:26:04.293 NotebookApp]Jupyter笔记本电脑的运行速度为：
[I 09:26:04.293 NotebookApp]http://localhost:8888/?token=a607d9176951f9f7c52829af223e2de939881f925a4f0099
[I 09:26:04.293 NotebookApp]使用Control-C停止此服务器并关闭所有内核（两次以跳过确认）。
[C 09:26:04.354 NotebookApp]
首次连接时将此URL复制/粘贴到浏览器中，
要使用令牌登录，请执行以下操作：
http://localhost:8888/?token=a607d9176951f9f7c52829af223e2de939881f925a4f0099
[I 09:26:09.924 NotebookApp]接受来自127.0.0.1的一次性令牌身份验证连接
[I 09:26:31.426 NotebookApp]内核已启动：5c1a7abe-8a46-4774-b878-2f93bd60714e
回溯（最近一次呼叫最后一次）：
文件“/home/dstlab 2/anaconda3/lib/python3.7/runpy.py”，第193行，在“运行”模块中作为“主”
“\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu
文件“/home/dstlab 2/anaconda3/lib/python3.7/runpy.py”，第85行，在运行代码中
exec（代码、运行\全局）
文件“/home/dstlab 2/anaconda3/lib/python3.7/site packages/ipykernel_launcher.py”，第15行，在
从ipykernel导入内核应用程序作为应用程序
文件“/home/dstlab 2/anaconda3/lib/python3.7/site packages/ipykernel/_init__.py”，第2行，在
从。连接导入*
文件“/home/dstlab 2/anaconda3/lib/python3.7/site packages/ipykernel/connect.py”，第13行，在
从IPython.core.profiledir导入profiledir
文件“/home/dstlab 2/anaconda3/lib/python3.7/site packages/IPython/_init__.py”，第54行，在
from.core.application导入应用程序
文件“/home/dstlab 2/anaconda3/lib/python3.7/site packages/IPython/core/application.py”，第25行，在
从IPython.core导入版本，crashhandler
文件“/home/dstlab 2/anaconda3/lib/python3.7/site packages/IPython/core/crashhandler.py”，第27行，在
从IPython.core导入ultratb
文件“/home/dstlab 2/anaconda3/lib/python3.7/site packages/IPython/core/ultratb.py”，第115行，在
从IPython.core导入调试器
文件“/home/dstlab 2/anaconda3/lib/python3.7/site packages/IPython/core/debugger.py”，第47行，在
从pdb将pdb作为旧pdb导入
文件“/home/dstlab 2/anaconda3/lib/python3.7/pdb.py”，第76行，在
导入代码
文件“/home/dstlab 2/code.py”，第36行
'Swig:：DirectorMethodException'
^
缩进错误：应为缩进块
[I 09:26:34.345 NotebookApp]内核重启器：重新启动内核（1/5），新的随机端口
回溯（最近一次呼叫最后一次）：
文件“/home/dstlab 2/anaconda3/lib/python3.7/runpy.py”，第193行，在“运行”模块中作为“主”
“\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu
文件“/home/dstlab 2/anaconda3/lib/python3.7/runpy.py”，第85行，在运行代码中
exec（代码、运行\全局）
文件“/home/dstlab 2/anaconda3/lib/python3.7/site packages/ipykernel_launcher.py”，第15行，在
从ipykernel导入内核应用程序作为应用程序
文件“/home/dstlab 2/anaconda3/lib/python3.7/site packages/ipykernel/_init__.py”，第2行，在
从。连接导入*
文件“/home/dstlab 2/anaconda3/lib/python3.7/site packages/ipykernel/connect.py”，第13行，在
从IPython.core.profiledir导入profiledir
文件“/home/dstlab 2/anaconda3/lib/python3.7/site packages/IPython/_init__.py”，第54行，在
from.core.application导入应用程序
文件“/home/dstlab 2/anaconda3/lib/python3.7/site packages/IPython/core/application.py”，第25行，在
从IPython.core导入版本，crashhandler
文件“/home/dstlab 2/anaconda3/lib/python3.7/site packages/IPython/core/crashhandler.py”，第27行，在
从IPython.core导入ultratb
文件“/home/dstlab 2/anaconda3/lib/python3.7/site packages/IPython/core/ultratb.py”，第115行，在
从IPython.core导入调试器
文件“/home/dstlab 2/anaconda3/lib/python3.7/site packages/IPython/core/debugger.py”，第47行，在
从pdb将pdb作为旧pdb导入
文件“/home/dstlab 2/anaconda3/lib/python3.7/pdb.py”，第76行，在
导入代码
文件“/home/dstlab 2/code.py”，第36行
'Swig:：DirectorMethodException'
^
缩进错误：应为缩进块
[I 09:26:37.353 NotebookApp]内核重启器：重新启动内核（2/5），新的随机端口
回溯（最近一次呼叫最后一次）：
文件“/home/dstlab 2/anaconda3/lib/python3.7/runpy.py”，第193行，在“运行”模块中作为“主”
“\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu
文件“/home/dstlab 2/anaconda3/lib/python3.7/runpy.py”，第85行，在运行代码中
exec（代码、运行\全局）
文件“/home/dstlab 2/anaconda3/lib/python3.7/site packages/ipykernel_launcher.py”，第15行，在
从ipykernel导入内核应用程序作为应用程序
文件“/home/dstlab 2/anaconda3/lib/python3.7/site packages/ipykernel/_init__.py”，第2行，在
从。连接导入*
文件“/home/dstlab 2/anaconda3/lib/python3.7/site packages/ipykernel/connect.py”，第13行，在