VSCode中无法启动Jupyter Notebook内核问题求助

问题详情 #

VSCode启动Jupyter内核失败，报错信息如下：

Failed to start the Kernel. 
C:\Users\Theodore\AppData\Roaming\Python\Python310\site-packages\traitlets\traitlets.py:2412: FutureWarning: Supporting extra quotes around strings is deprecated in traitlets 5.0. You can use 'hmac-sha256' instead of '"hmac-sha256"' if you require traitlets >=5.
  warn(
C:\Users\Theodore\AppData\Roaming\Python\Python310\site-packages\traitlets\traitlets.py:2366: FutureWarning: Supporting extra quotes around Bytes is deprecated in traitlets 5.0. Use '7d0f2f44-841e-4868-9c82-374720d9f73e' instead of 'b"7d0f2f44-841e-4868-9c82-374720d9f73e"'.
  warn(
Bad address (C:\projects\libzmq\src\epoll.cpp:100). 
View Jupyter log for further details.

环境信息：

• Python版本：3.10.4
• Jupyter Notebook版本：6.4.12
• 切换Anaconda内核同样失效，偶尔提示需重新安装ipykernel

解决方案 #

• 修复traitlets版本兼容问题
  Jupyter Notebook 6.4.12与traitlets 5.x存在兼容问题，执行命令降级到稳定兼容版本：

  pip install traitlets==4.3.3
  

• 重新安装pyzmq解决网络地址错误
  卸载现有pyzmq并安装适配Windows Python3.10的稳定版本：

  pip uninstall -y pyzmq
  pip install pyzmq==23.2.0
  

• 重装并注册ipykernel
  针对当前Python环境升级ipykernel：

  pip install --upgrade ipykernel
  

  若使用Anaconda环境，激活目标环境后执行：

  conda install -c anaconda ipykernel
  python -m ipykernel install --user --name=your_env_name
  

  替换your_env_name为你的Anaconda环境名称。

• 重置VSCode Jupyter配置

  1. 打开VSCode，按Ctrl+Shift+P调出命令面板，输入Jupyter: Reset Jupyter Server并执行
  2. 关闭VSCode，删除用户目录下的.jupyter文件夹（路径：C:\Users\Theodore\.jupyter）
  3. 重新启动VSCode，尝试重新连接内核

内容的提问来源于stack exchange，提问作者Theodore Maximus