Kernel error anaconda - Исправление ошибок и поиск оптимальных решений проблем

Additional Information: Here is the jupyter error I am seeing when looking at terminal:

Traceback (most recent call last):
File «C:UsersDavidAnaconda3libsite-packagestornadoweb.py», line 1543, in _execute
result = yield result
File «C:UsersDavidAnaconda3libsite-packagestornadogen.py», line 1099, in run
value = future.result()
File «C:UsersDavidAnaconda3libsite-packagestornadogen.py», line 1107, in run
yielded = self.gen.throw(*exc_info)
File «C:UsersDavidAnaconda3libsite-packagesnotebookservicessessionshandlers.py», line 73, in post
type=mtype))
File «C:UsersDavidAnaconda3libsite-packagestornadogen.py», line 1099, in run
value = future.result()
File «C:UsersDavidAnaconda3libsite-packagestornadogen.py», line 1107, in run
yielded = self.gen.throw(*exc_info)
File «C:UsersDavidAnaconda3libsite-packagesnotebookservicessessionssessionmanager.py», line 79, in create_session
kernel_id = yield self.start_kernel_for_session(session_id, path, name, type, kernel_name)
File «C:UsersDavidAnaconda3libsite-packagestornadogen.py», line 1099, in run
value = future.result()
File «C:UsersDavidAnaconda3libsite-packagestornadogen.py», line 1107, in run
yielded = self.gen.throw(*exc_info)
File «C:UsersDavidAnaconda3libsite-packagesnotebookservicessessionssessionmanager.py», line 92, in start_kernel_for_session
self.kernel_manager.start_kernel(path=kernel_path, kernel_name=kernel_name)
File «C:UsersDavidAnaconda3libsite-packagestornadogen.py», line 1099, in run
value = future.result()
File «C:UsersDavidAnaconda3libsite-packagestornadogen.py», line 315, in wrapper
yielded = next(result)
File «C:UsersDavidAnaconda3libsite-packagesnotebookserviceskernelskernelmanager.py», line 148, in start_kernel
super(MappingKernelManager, self).start_kernel(**kwargs)
File «C:UsersDavidAnaconda3libsite-packagesjupyter_clientmultikernelmanager.py», line 110, in start_kernel
km.start_kernel(**kwargs)
File «C:UsersDavidAnaconda3libsite-packagesjupyter_clientmanager.py», line 259, in start_kernel
**kw)
File «C:UsersDavidAnaconda3libsite-packagesjupyter_clientmanager.py», line 204, in _launch_kernel
return launch_kernel(kernel_cmd, **kw)
File «C:UsersDavidAnaconda3libsite-packagesjupyter_clientlauncher.py», line 128, in launch_kernel
proc = Popen(cmd, **kwargs)
File «C:UsersDavidAnaconda3libsubprocess.py», line 709, in init
restore_signals, start_new_session)
File «C:UsersDavidAnaconda3libsubprocess.py», line 997, in _execute_child
startupinfo)
FileNotFoundError: [WinError 2] The system cannot find the file specified

Источник

Привет всем!
Создал в Anaconda Navigator новое виртуальное окружение, но при запуске из него Jupyter Notebook появляется Kernel error (из базового окружения Jupyter Notebook запускается нормально):

Traceback (most recent call last):
  File "C:Usersimmelnikoffanaconda3envsfor_youtubelibsite-packagestornadoweb.py", line 1592, in _execute
    result = yield result
  File "C:Usersimmelnikoffanaconda3envsfor_youtubelibsite-packagestornadogen.py", line 1133, in run
    value = future.result()
  File "C:Usersimmelnikoffanaconda3envsfor_youtubelibasynciofutures.py", line 294, in result
    raise self._exception
  File "C:Usersimmelnikoffanaconda3envsfor_youtubelibsite-packagestornadogen.py", line 1141, in run
    yielded = self.gen.throw(*exc_info)
  File "C:Usersimmelnikoffanaconda3envsfor_youtubelibsite-packagesnotebookservicessessionshandlers.py", line 73, in post
    type=mtype))
  File "C:Usersimmelnikoffanaconda3envsfor_youtubelibsite-packagestornadogen.py", line 1133, in run
    value = future.result()
  File "C:Usersimmelnikoffanaconda3envsfor_youtubelibasynciofutures.py", line 294, in result
    raise self._exception
  File "C:Usersimmelnikoffanaconda3envsfor_youtubelibsite-packagestornadogen.py", line 1141, in run
    yielded = self.gen.throw(*exc_info)
  File "C:Usersimmelnikoffanaconda3envsfor_youtubelibsite-packagesnotebookservicessessionssessionmanager.py", line 79, in create_session
    kernel_id = yield self.start_kernel_for_session(session_id, path, name, type, kernel_name)
  File "C:Usersimmelnikoffanaconda3envsfor_youtubelibsite-packagestornadogen.py", line 1133, in run
    value = future.result()
  File "C:Usersimmelnikoffanaconda3envsfor_youtubelibasynciofutures.py", line 294, in result
    raise self._exception
  File "C:Usersimmelnikoffanaconda3envsfor_youtubelibsite-packagestornadogen.py", line 1141, in run
    yielded = self.gen.throw(*exc_info)
  File "C:Usersimmelnikoffanaconda3envsfor_youtubelibsite-packagesnotebookservicessessionssessionmanager.py", line 92, in start_kernel_for_session
    self.kernel_manager.start_kernel(path=kernel_path, kernel_name=kernel_name)
  File "C:Usersimmelnikoffanaconda3envsfor_youtubelibsite-packagestornadogen.py", line 1133, in run
    value = future.result()
  File "C:Usersimmelnikoffanaconda3envsfor_youtubelibasynciofutures.py", line 294, in result
    raise self._exception
  File "C:Usersimmelnikoffanaconda3envsfor_youtubelibsite-packagestornadogen.py", line 326, in wrapper
    yielded = next(result)
  File "C:Usersimmelnikoffanaconda3envsfor_youtubelibsite-packagesnotebookserviceskernelskernelmanager.py", line 160, in start_kernel
    super(MappingKernelManager, self).start_kernel(**kwargs)
  File "C:Usersimmelnikoffanaconda3envsfor_youtubelibsite-packagesjupyter_clientmultikernelmanager.py", line 110, in start_kernel
    km.start_kernel(**kwargs)
  File "C:Usersimmelnikoffanaconda3envsfor_youtubelibsite-packagesjupyter_clientmanager.py", line 240, in start_kernel
    self.write_connection_file()
  File "C:Usersimmelnikoffanaconda3envsfor_youtubelibsite-packagesjupyter_clientconnect.py", line 547, in write_connection_file
    kernel_name=self.kernel_name
  File "C:Usersimmelnikoffanaconda3envsfor_youtubelibsite-packagesjupyter_clientconnect.py", line 212, in write_connection_file
    with secure_write(fname) as f:
  File "C:Usersimmelnikoffanaconda3envsfor_youtubelibcontextlib.py", line 59, in __enter__
    return next(self.gen)
  File "C:Usersimmelnikoffanaconda3envsfor_youtubelibsite-packagesjupyter_clientconnect.py", line 100, in secure_write
    win32_restrict_file_to_user(fname)
  File "C:Usersimmelnikoffanaconda3envsfor_youtubelibsite-packagesjupyter_clientconnect.py", line 53, in win32_restrict_file_to_user
    import win32api
ImportError: No module named 'win32api'

Источник

0 / 0 / 0

Регистрация: 05.11.2018

Сообщений: 1

05.11.2018, 01:50. Показов 8911. Ответов 1

Добрый вечер, данная проблема уже 2-й день не дает мне покоя. Просьба помочь разобраться с происходящим.
При попытке работать с Jupyter Notebook, запуская предварительно через Anaconda, в правом верхнем углу выскакивает красное окошко с надписью “Kernel error”. При нажатии на него появляется следующий код:

Код

   Traceback (most recent call last):
  File "C:ProgramDataAnaconda3libsite-packagestornadoweb.py", line 1592, in _execute
    result = yield result
  File "C:ProgramDataAnaconda3libsite-packagestornadogen.py", line 1133, in run
    value = future.result()
  File "C:ProgramDataAnaconda3libsite-packagestornadogen.py", line 1141, in run
    yielded = self.gen.throw(*exc_info)
  File "C:ProgramDataAnaconda3libsite-packagesnotebookservicessessionshandlers.py", line 73, in post
    type=mtype))
File "C:ProgramDataAnaconda3libsite-packagestornadogen.py", line 1133, in run
    value = future.result()
  File "C:ProgramDataAnaconda3libsite-packagestornadogen.py", line 1141, in run
    yielded = self.gen.throw(*exc_info)
  File "C:ProgramDataAnaconda3libsite-packagesnotebookservicessessionssessionmanager.py", line 79, in create_session
    kernel_id = yield self.start_kernel_for_session(session_id, path, name, type, kernel_name)
  File "C:ProgramDataAnaconda3libsite-packagestornadogen.py", line 1133, in run
value = future.result()
  File "C:ProgramDataAnaconda3libsite-packagestornadogen.py", line 1141, in run
    yielded = self.gen.throw(*exc_info)
  File "C:ProgramDataAnaconda3libsite-packagesnotebookservicessessionssessionmanager.py", line 92, in start_kernel_for_session
    self.kernel_manager.start_kernel(path=kernel_path, kernel_name=kernel_name)
  File "C:ProgramDataAnaconda3libsite-packagestornadogen.py", line 1133, in run
    value = future.result()
  File "C:ProgramDataAnaconda3libsite-packagestornadogen.py", line 326, in wrapper
    yielded = next(result)
  File "C:ProgramDataAnaconda3libsite-packagesnotebookserviceskernelskernelmanager.py", line 160, in start_kernel
    super(MappingKernelManager, self).start_kernel(**kwargs)
  File "C:ProgramDataAnaconda3libsite-packagesjupyter_clientmultikernelmanager.py", line 110, in start_kernel
    km.start_kernel(**kwargs)
  File "C:ProgramDataAnaconda3libsite-packagesjupyter_clientmanager.py", line 259, in start_kernel
    **kw)
  File "C:ProgramDataAnaconda3libsite-packagesjupyter_clientmanager.py", line 204, in _launch_kernel
    return launch_kernel(kernel_cmd, **kw)
  File "C:ProgramDataAnaconda3libsite-packagesjupyter_clientlauncher.py", line 128, in launch_kernel
    proc = Popen(cmd, **kwargs)
  File "C:ProgramDataAnaconda3libsubprocess.py", line 756, in __init__
    restore_signals, start_new_session)
  File "C:ProgramDataAnaconda3libsubprocess.py", line 1155, in _execute_child
    startupinfo)
OSError: [WinError 87] Параметр задан неверно

Соответственно, не могу запустить даже print(‘hello, world!’). Подскажите, как подойти к решению данной проблемы?

__________________
Помощь в написании контрольных, курсовых и дипломных работ, диссертаций здесь

Источник

 Traceback (most recent call last):
  File "C:ProgramDataAnaconda3libsite-packagestornadoweb.py", line 1592, in _execute
    result = yield result
  File "C:ProgramDataAnaconda3libsite-packagestornadogen.py", line 1133, in run
    value = future.result()
  File "C:ProgramDataAnaconda3libsite-packagestornadogen.py", line 1141, in run
    yielded = self.gen.throw(*exc_info)
  File "C:ProgramDataAnaconda3libsite-packagesnotebookservicessessionshandlers.py", line 73, in post
    type=mtype))
  File "C:ProgramDataAnaconda3libsite-packagestornadogen.py", line 1133, in run
    value = future.result()
  File "C:ProgramDataAnaconda3libsite-packagestornadogen.py", line 1141, in run
    yielded = self.gen.throw(*exc_info)
  File "C:ProgramDataAnaconda3libsite-packagesnotebookservicessessionssessionmanager.py", line 79, in create_session
    kernel_id = yield self.start_kernel_for_session(session_id, path, name, type, kernel_name)
  File "C:ProgramDataAnaconda3libsite-packagestornadogen.py", line 1133, in run
value = future.result()
  File "C:ProgramDataAnaconda3libsite-packagestornadogen.py", line 1141, in run
    yielded = self.gen.throw(*exc_info)
  File "C:ProgramDataAnaconda3libsite-packagesnotebookservicessessionssessionmanager.py", line 92, in start_kernel_for_session
    self.kernel_manager.start_kernel(path=kernel_path, kernel_name=kernel_name)
  File "C:ProgramDataAnaconda3libsite-packagestornadogen.py", line 1133, in run
    value = future.result()
  File "C:ProgramDataAnaconda3libsite-packagestornadogen.py", line 326, in wrapper
    yielded = next(result)
  File "C:ProgramDataAnaconda3libsite-packagesnotebookserviceskernelskernelmanager.py", line 160, in start_kernel
    super(MappingKernelManager, self).start_kernel(**kwargs)
  File "C:ProgramDataAnaconda3libsite-packagesjupyter_clientmultikernelmanager.py", line 110, in start_kernel
    km.start_kernel(**kwargs)
  File "C:ProgramDataAnaconda3libsite-packagesjupyter_clientmanager.py", line 259, in start_kernel
    **kw)
  File "C:ProgramDataAnaconda3libsite-packagesjupyter_clientmanager.py", line 204, in _launch_kernel
    return launch_kernel(kernel_cmd, **kw)
  File "C:ProgramDataAnaconda3libsite-packagesjupyter_clientlauncher.py", line 128, in launch_kernel
    proc = Popen(cmd, **kwargs)
  File "C:ProgramDataAnaconda3libsubprocess.py", line 756, in __init__
    restore_signals, start_new_session)
  File "C:ProgramDataAnaconda3libsubprocess.py", line 1155, in _execute_child
    startupinfo)
OSError: [WinError 87] Параметр задан неверно

Соответственно, не могу запустить даже print(‘hello, world!’). Подскажите, как подойти к решению данной проблемы?

Источник

It appears that somehow one of my kernels is deleted. And perhaps that’s why I am getting this error. How could I possibly fix it? Can I reinstall something (the kernel in the base environment perhaps)?

If no better option is available, I would try reinstalling anaconda altogether as a last resort according to: Default kernel in jupyter notebook (Python3) not working.

I have tried using the following:

Installation of Jupyter Lab: requirements already satisfied
Kernels don’t show up when runnning «jupyter lab»
UI says «No kernel» while I definitively have one
Getting Kernel Error while running Jupyter Notebook in Python3
https://ipython.readthedocs.io/en/latest/install/kernel_install.html
https://medium.com/flatiron-engineering/recovering-from-a-jupyter-disaster-27401677aeeb

Current List of Kernels

jupyter kernelspec list

Output:

Available kernels:
  python3    C:UsersraysuAppDataRoamingjupyterkernelspython3
  vpython    C:ProgramDatajupyterkernelsvpython

But I must have another kernel (which I suppose somehow got deleted) associated with my base environment.

C:UsersraysuDocuments>conda env list
# conda environments:
#
base                  *  C:Program Files (x86)Microsoft Visual StudioSharedAnaconda3_64
astra_env                C:Program Files (x86)Microsoft Visual StudioSharedAnaconda3_64envsastra_env
bokeh_env                C:Program Files (x86)Microsoft Visual StudioSharedAnaconda3_64envsbokeh_env
sound_env                C:Program Files (x86)Microsoft Visual StudioSharedAnaconda3_64envssound_env
tf_env                   C:Program Files (x86)Microsoft Visual StudioSharedAnaconda3_64envstf_env
                         C:UsersraysuAnaconda3
                         C:UsersraysuAnaconda3envspyforge
opencv_env               C:UsersraysuAppDataLocalcondacondaenvsopencv_env
test_env                 C:UsersraysuAppDataLocalcondacondaenvstest_env

Error

Traceback (most recent call last):
  File "C:Program Files (x86)Microsoft Visual StudioSharedAnaconda3_64libsite-packagestornadoweb.py", line 1699, in _execute
    result = await result
  File "C:Program Files (x86)Microsoft Visual StudioSharedAnaconda3_64libsite-packagestornadogen.py", line 742, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "C:Program Files (x86)Microsoft Visual StudioSharedAnaconda3_64libsite-packagesnotebookservicessessionshandlers.py", line 72, in post
    type=mtype))
  File "C:Program Files (x86)Microsoft Visual StudioSharedAnaconda3_64libsite-packagestornadogen.py", line 735, in run
    value = future.result()
  File "C:Program Files (x86)Microsoft Visual StudioSharedAnaconda3_64libsite-packagestornadogen.py", line 742, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "C:Program Files (x86)Microsoft Visual StudioSharedAnaconda3_64libsite-packagesnotebookservicessessionssessionmanager.py", line 88, in create_session
    kernel_id = yield self.start_kernel_for_session(session_id, path, name, type, kernel_name)
  File "C:Program Files (x86)Microsoft Visual StudioSharedAnaconda3_64libsite-packagestornadogen.py", line 735, in run
    value = future.result()
  File "C:Program Files (x86)Microsoft Visual StudioSharedAnaconda3_64libsite-packagestornadogen.py", line 742, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "C:Program Files (x86)Microsoft Visual StudioSharedAnaconda3_64libsite-packagesnotebookservicessessionssessionmanager.py", line 101, in start_kernel_for_session
    self.kernel_manager.start_kernel(path=kernel_path, kernel_name=kernel_name)
  File "C:Program Files (x86)Microsoft Visual StudioSharedAnaconda3_64libsite-packagestornadogen.py", line 735, in run
    value = future.result()
  File "C:Program Files (x86)Microsoft Visual StudioSharedAnaconda3_64libsite-packagestornadogen.py", line 209, in wrapper
    yielded = next(result)
  File "C:Program Files (x86)Microsoft Visual StudioSharedAnaconda3_64libsite-packagesnotebookserviceskernelskernelmanager.py", line 168, in start_kernel
    super(MappingKernelManager, self).start_kernel(**kwargs)
  File "C:UsersraysuAppDataRoamingPythonPython36site-packagesjupyter_clientmultikernelmanager.py", line 110, in start_kernel
    km.start_kernel(**kwargs)
  File "C:UsersraysuAppDataRoamingPythonPython36site-packagesjupyter_clientmanager.py", line 240, in start_kernel
    self.write_connection_file()
  File "C:UsersraysuAppDataRoamingPythonPython36site-packagesjupyter_clientconnect.py", line 476, in write_connection_file
    kernel_name=self.kernel_name
  File "C:UsersraysuAppDataRoamingPythonPython36site-packagesjupyter_clientconnect.py", line 141, in write_connection_file
    with secure_write(fname) as f:
  File "C:Program Files (x86)Microsoft Visual StudioSharedAnaconda3_64libcontextlib.py", line 81, in __enter__
    return next(self.gen)
  File "C:UsersraysuAppDataRoamingPythonPython36site-packagesjupyter_corepaths.py", line 404, in secure_write
    win32_restrict_file_to_user(fname)
  File "C:UsersraysuAppDataRoamingPythonPython36site-packagesjupyter_corepaths.py", line 359, in win32_restrict_file_to_user
    import win32api
ImportError: DLL load failed: The specified procedure could not be found.

Источник

Issue

The kernel says connecting and then says No Kernel | Disconnected.
I have clean-uninstalled anaconda and uninstalled all jupyter using
python -m pip uninstall -y jupyter jupyter_core jupyter-client jupyter-console jupyterlab_pygments notebook qtconsole nbconvert nbformat

Searching anaconda or jupyter in Home directory gave nothing.

Then, I fresh installed anaconda and still the problem stays.

At first, it seemed kernel was connecting with a new notebook but after some time kernel was connecting in a new notebook.
(Update: I found out that the new notebooks are connecting to kernel until an old notebook is opened. Once an old notebook is opened, then onwards, no notebooks are connecting to kernel)

I’m stuck on this.

The following is what I get in the terminal:

[I 2021-08-01 21:01:42.797 ServerApp] nbclassic | extension was successfully linked.
[I 2021-08-01 21:01:42.846 LabApp] JupyterLab extension loaded from /home/username/anaconda3/lib/python3.8/site-packages/jupyterlab
[I 2021-08-01 21:01:42.846 LabApp] JupyterLab application directory is /home/username/anaconda3/share/jupyter/lab
[I 2021-08-01 21:01:42.849 ServerApp] jupyterlab | extension was successfully loaded.
[I 2021-08-01 21:01:42.852 ServerApp] nbclassic | extension was successfully loaded.
[I 2021-08-01 21:01:42.852 ServerApp] Serving notebooks from local directory: /home/username
[I 2021-08-01 21:01:42.853 ServerApp] Jupyter Server 1.4.1 is running at:
[I 2021-08-01 21:01:42.853 ServerApp] http://localhost:8888/lab?token=3d46a4259293e2afc5f584cf2d62586c5c553fd37e55e775
[I 2021-08-01 21:01:42.853 ServerApp]  or http://127.0.0.1:8888/lab?token=3d46a4259293e2afc5f584cf2d62586c5c553fd37e55e775
[I 2021-08-01 21:01:42.853 ServerApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 2021-08-01 21:01:42.877 ServerApp] 
    
    To access the server, open this file in a browser:
        file:///home/username/.local/share/jupyter/runtime/jpserver-9804-open.html
    Or copy and paste one of these URLs:
        http://localhost:8888/lab?token=3d46a4259293e2afc5f584cf2d62586c5c553fd37e55e775
     or http://127.0.0.1:8888/lab?token=3d46a4259293e2afc5f584cf2d62586c5c553fd37e55e775
[I 2021-08-01 21:01:48.429 LabApp] Build is up to date
[W 2021-08-01 21:01:49.469 ServerApp] Notebook Desktop/Link to foldername/ms-p/peroo/anl.ipynb is not trusted
[I 2021-08-01 21:01:52.346 ServerApp] Kernel started: 7bbe2308-8b30-4a4b-8b04-31aabe33d635
Traceback (most recent call last):
  File "/home/username/anaconda3/lib/python3.8/runpy.py", line 194, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/home/username/anaconda3/lib/python3.8/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "/home/username/anaconda3/lib/python3.8/site-packages/ipykernel_launcher.py", line 15, in <module>
    from ipykernel import kernelapp as app
  File "/home/username/anaconda3/lib/python3.8/site-packages/ipykernel/__init__.py", line 2, in <module>
    from .connect import *
  File "/home/username/anaconda3/lib/python3.8/site-packages/ipykernel/connect.py", line 13, in <module>
    from IPython.core.profiledir import ProfileDir
  File "/home/username/anaconda3/lib/python3.8/site-packages/IPython/__init__.py", line 55, in <module>
    from .core.application import Application
  File "/home/username/anaconda3/lib/python3.8/site-packages/IPython/core/application.py", line 25, in <module>
    from IPython.core import release, crashhandler
  File "/home/username/anaconda3/lib/python3.8/site-packages/IPython/core/crashhandler.py", line 27, in <module>
    from IPython.core import ultratb
  File "/home/username/anaconda3/lib/python3.8/site-packages/IPython/core/ultratb.py", line 112, in <module>
    from IPython.core import debugger
  File "/home/username/anaconda3/lib/python3.8/site-packages/IPython/core/debugger.py", line 47, in <module>
    from pdb import Pdb as OldPdb
  File "/home/username/anaconda3/lib/python3.8/pdb.py", line 77, in <module>
    import code
  File "/home/username/Desktop/Projects/foldername/ms-p/peroo/code.py", line 535, in <module>
    "execution_count": null,
NameError: name 'null' is not defined
[I 2021-08-01 21:01:55.348 ServerApp] AsyncIOLoopKernelRestarter: restarting kernel (1/5), new random ports
Traceback (most recent call last):
  File "/home/username/anaconda3/lib/python3.8/runpy.py", line 194, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/home/username/anaconda3/lib/python3.8/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "/home/username/anaconda3/lib/python3.8/site-packages/ipykernel_launcher.py", line 15, in <module>
    from ipykernel import kernelapp as app
  File "/home/username/anaconda3/lib/python3.8/site-packages/ipykernel/__init__.py", line 2, in <module>
    from .connect import *
  File "/home/username/anaconda3/lib/python3.8/site-packages/ipykernel/connect.py", line 13, in <module>
    from IPython.core.profiledir import ProfileDir
  File "/home/username/anaconda3/lib/python3.8/site-packages/IPython/__init__.py", line 55, in <module>
    from .core.application import Application
  File "/home/username/anaconda3/lib/python3.8/site-packages/IPython/core/application.py", line 25, in <module>
    from IPython.core import release, crashhandler
  File "/home/username/anaconda3/lib/python3.8/site-packages/IPython/core/crashhandler.py", line 27, in <module>
    from IPython.core import ultratb
  File "/home/username/anaconda3/lib/python3.8/site-packages/IPython/core/ultratb.py", line 112, in <module>
    from IPython.core import debugger
  File "/home/username/anaconda3/lib/python3.8/site-packages/IPython/core/debugger.py", line 47, in <module>
    from pdb import Pdb as OldPdb
  File "/home/username/anaconda3/lib/python3.8/pdb.py", line 77, in <module>
    import code
  File "/home/username/Desktop/Projects/foldername/ms-p/peroo/code.py", line 535, in <module>
    "execution_count": null,
NameError: name 'null' is not defined
[I 2021-08-01 21:01:58.362 ServerApp] AsyncIOLoopKernelRestarter: restarting kernel (2/5), new random ports
Traceback (most recent call last):
  File "/home/username/anaconda3/lib/python3.8/runpy.py", line 194, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/home/username/anaconda3/lib/python3.8/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "/home/username/anaconda3/lib/python3.8/site-packages/ipykernel_launcher.py", line 15, in <module>
    from ipykernel import kernelapp as app
  File "/home/username/anaconda3/lib/python3.8/site-packages/ipykernel/__init__.py", line 2, in <module>
    from .connect import *
  File "/home/username/anaconda3/lib/python3.8/site-packages/ipykernel/connect.py", line 13, in <module>
    from IPython.core.profiledir import ProfileDir
  File "/home/username/anaconda3/lib/python3.8/site-packages/IPython/__init__.py", line 55, in <module>
    from .core.application import Application
  File "/home/username/anaconda3/lib/python3.8/site-packages/IPython/core/application.py", line 25, in <module>
    from IPython.core import release, crashhandler
  File "/home/username/anaconda3/lib/python3.8/site-packages/IPython/core/crashhandler.py", line 27, in <module>
    from IPython.core import ultratb
  File "/home/username/anaconda3/lib/python3.8/site-packages/IPython/core/ultratb.py", line 112, in <module>
    from IPython.core import debugger
  File "/home/username/anaconda3/lib/python3.8/site-packages/IPython/core/debugger.py", line 47, in <module>
    from pdb import Pdb as OldPdb
  File "/home/username/anaconda3/lib/python3.8/pdb.py", line 77, in <module>
    import code
  File "/home/username/Desktop/Projects/foldername/ms-p/peroo/code.py", line 535, in <module>
    "execution_count": null,
NameError: name 'null' is not defined

Solution

It looks like you have a conflict in your PYTHONPATH. pdb attempts to import code, but instead of getting its module it sees your /home/username/Desktop/Projects/foldername/ms-p/peroo/code.py file which leads to the failure. Rename this file to something else, e.g. mycode.py. This can be a common problem, e.g. you cannot have a file named statistics.py because you will shadow built-in statistics module. This is well explained in answers to: Importing installed package from script raises «AttributeError: module has no attribute» or «ImportError: cannot import name».

Answered By — krassowski

Источник