Under certain conditions, the kernel fails to start

[lihaicheng7003]

Description

Expected behavior

When there is a "html.py" in the directory, jupyter cannot connect to any kernel

Context

jupyter-lsp 2.2.0 pyhd8ed1ab_0 conda-forge
jupyter_client 8.3.0 pyhd8ed1ab_0 conda-forge
jupyter_core 5.3.1 py311h38be061_0 conda-forge
jupyter_events 0.6.3 pyhd8ed1ab_0 conda-forge
jupyter_server 2.7.0 pyhd8ed1ab_0 conda-forge
jupyter_server_terminals 0.4.4 pyhd8ed1ab_1 conda-forge
jupyterlab 4.0.9 pyhd8ed1ab_0 conda-forge
jupyterlab_code_formatter 2.2.1 pyhd8ed1ab_0 conda-forge
jupyterlab_execute_time 3.0.0 pyhd8ed1ab_0 conda-forge
jupyterlab_pygments 0.2.2 pyhd8ed1ab_0 conda-forge
jupyterlab_server 2.23.0 pyhd8ed1ab_0 conda-forge
nb_conda_kernels 2.3.1 py311h38be061_2 conda-forge

environment

• ipykernel: 6.26.0

system
CentOS Linux release 7.8.2003 (Core)
Linux version 3.10.0-1127.el7.x86_64 (mockbuild@kbuilder.bsys.centos.org) (gcc version 4.8.5 20150623 (Red Hat 4.8.5-39) (GCC)

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[JasonWeill]

@lihaicheng7003 Thank you for opening this issue! Do you see this issue with all kernels? Do you see any errors in the console where you started JupyterLab, or in the browser console in developer tools?

[RRosio]

Adding here that I was able to reproduce this in Notebook 7.0.3 and JupyterLab 4.0.5

The error in the terminal for me was:

[I 2024-01-02 09:36:48.618 ServerApp] Kernel started: d5beddf2-5ba6-4996-aec6-3ee7120f4b5f
Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "/Users/rosioreyes/miniconda3/envs/nb7/lib/python3.11/site-packages/ipykernel_launcher.py", line 15, in <module>
    from ipykernel import kernelapp as app
  File "/Users/rosioreyes/miniconda3/envs/nb7/lib/python3.11/site-packages/ipykernel/__init__.py", line 5, in <module>
    from .connect import *  # noqa
    ^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/rosioreyes/miniconda3/envs/nb7/lib/python3.11/site-packages/ipykernel/connect.py", line 11, in <module>
    import jupyter_client
  File "/Users/rosioreyes/miniconda3/envs/nb7/lib/python3.11/site-packages/jupyter_client/__init__.py", line 3, in <module>
    from .asynchronous import AsyncKernelClient
  File "/Users/rosioreyes/miniconda3/envs/nb7/lib/python3.11/site-packages/jupyter_client/asynchronous/__init__.py", line 1, in <module>
    from .client import AsyncKernelClient  # noqa
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/rosioreyes/miniconda3/envs/nb7/lib/python3.11/site-packages/jupyter_client/asynchronous/client.py", line 8, in <module>
    from ..channels import AsyncZMQSocketChannel, HBChannel
  File "/Users/rosioreyes/miniconda3/envs/nb7/lib/python3.11/site-packages/jupyter_client/channels.py", line 16, in <module>
    from .session import Session
  File "/Users/rosioreyes/miniconda3/envs/nb7/lib/python3.11/site-packages/jupyter_client/session.py", line 31, in <module>
    from tornado.ioloop import IOLoop
  File "/Users/rosioreyes/miniconda3/envs/nb7/lib/python3.11/site-packages/tornado/ioloop.py", line 39, in <module>
    from tornado.concurrent import (
  File "/Users/rosioreyes/miniconda3/envs/nb7/lib/python3.11/site-packages/tornado/concurrent.py", line 34, in <module>
    from tornado.log import app_log
  File "/Users/rosioreyes/miniconda3/envs/nb7/lib/python3.11/site-packages/tornado/log.py", line 34, in <module>
    from tornado.escape import _unicode
  File "/Users/rosioreyes/miniconda3/envs/nb7/lib/python3.11/site-packages/tornado/escape.py", line 22, in <module>
    import html.entities
ModuleNotFoundError: No module named 'html.entities'; 'html' is not a package

[krassowski]

Should we close this as a duplicate of #12914?

[RRosio]

Thank you @krassowski, I think that would be good. I will go ahead and close this issue! Thanks again for reporting this @lihaicheng7003!

[lihaicheng7003]

Thanks