VSCode suddenly unable to find or start python jupyter kernels

zacps commented 2 weeks ago

Applies To

[X] Notebooks (.ipynb files)
[ ] Interactive Window and\/or Cell Scripts (.py files with #%% markers)

What happened?

Created a new notebook, and attempted to select a kernel and run a cell.

The kernel picker shows no options under Python environments, and running a cell shows:

Failed to start the Kernel. 
View Jupyter [log](command:jupyter.viewOutput) for further details.

This broke suddenly, without any obvious changes on my part (as far as I know).

VS Code Version

Version: 1.90.2 Commit: 5437499feb04f7a586f677b155b039bc2b3669eb Date: 2024-06-18T22:33:48.698Z Electron: 29.4.0 ElectronBuildId: 9728852 Chromium: 122.0.6261.156 Node.js: 20.9.0 V8: 12.2.281.27-electron.0 OS: Linux x64 6.5.0-41-generic snap

Jupyter Extension Version

v2024.5.0

Jupyter logs

Visual Studio Code (1.90.2, undefined, desktop)
Jupyter Extension Version: 2024.5.0.
Python Extension not installed.
Pylance Extension not installed.
Platform: linux (x64).
Workspace folder ~/REPO_OBSCURED, Home = /home/zac
08:51:50.996 [info] Starting Kernel (Python 3 (ipykernel)) for '~/REPO_OBSCURED/ran_notebooks/testing.ipynb' (disableUI=false)
08:51:51.008 [info] Launching Raw Kernel Python 3 (ipykernel) # python
08:51:51.016 [info] Process Execution: /python -m ipykernel_launcher --f=/home/~/.local/share/jupyter/runtime/kernel-v2-2311178cDwjhvlbJF.json
    > cwd: //home/~/REPO_OBSCURED/ran_notebooks
08:51:51.019 [error] Kernel died Error: spawn python ENOENT
    at Process.ChildProcess._handle.onexit (node:internal/child_process:286:19)
    at onErrorNT (node:internal/child_process:484:16)
    at processTicksAndRejections (node:internal/process/task_queues:82:21) {
  errno: -2,
  code: 'ENOENT',
  syscall: 'spawn python',
  path: 'python',
  spawnargs: [
    '-m',
    'ipykernel_launcher',
    '--f=/home/~/.local/share/jupyter/runtime/kernel-v2-2311178cDwjhvlbJF.json'
  ]
} 
08:51:51.021 [error] Disposing kernel process due to an error Error: spawn python ENOENT
    at Process.ChildProcess._handle.onexit (node:internal/child_process:286:19)
    at onErrorNT (node:internal/child_process:484:16)
    at processTicksAndRejections (node:internal/process/task_queues:82:21) {
  errno: -2,
  code: 'ENOENT',
  syscall: 'spawn python',
  path: 'python',
  spawnargs: [
    '-m',
    'ipykernel_launcher',
    '--f=/home/~/.local/share/jupyter/runtime/kernel-v2-2311178cDwjhvlbJF.json'
  ]
}
08:51:51.021 [error] 
08:51:51.029 [error] Failed to connect raw kernel session: Error: The kernel died. Error: ... View Jupyter [log](command:jupyter.viewOutput) for further details.
08:51:51.029 [error] Failed to connect raw kernel session: Error: The kernel died. Error: ... View Jupyter [log](command:jupyter.viewOutput) for further details.
08:51:51.029 [warn] Failed to shutdown kernel, .python3./python./.-m#ipykernel_launcher TypeError: Cannot read properties of undefined (reading 'dispose')
    at DT.shutdown (/home/~/.vscode/extensions/ms-toolsai.jupyter-2024.5.0-linux-x64/dist/extension.node.js:314:13629)
    at processTicksAndRejections (node:internal/process/task_queues:95:5)
    at _T.shutdown (/home/~/.vscode/extensions/ms-toolsai.jupyter-2024.5.0-linux-x64/dist/extension.node.js:314:22107)
08:51:51.031 [warn] Error occurred while trying to start the kernel, options.disableUI=false Error: The kernel died. Error: ... View Jupyter [log](command:jupyter.viewOutput) for further details.
    > Kernel Id = .python3./python./.-m#ipykernel_launcher
    > at new r (/home/~/.vscode/extensions/ms-toolsai.jupyter-2024.5.0-linux-x64/dist/extension.node.js:108:4480)
    > originalException = Error: spawn python ENOENT
    > stdErr = 
08:51:51.031 [warn] Kernel Error, context = start Error: The kernel died. Error: ... View Jupyter [log](command:jupyter.viewOutput) for further details.
    > Kernel Id = .python3./python./.-m#ipykernel_launcher
    > at new r (/home/~/.vscode/extensions/ms-toolsai.jupyter-2024.5.0-linux-x64/dist/extension.node.js:108:4480)
    > originalException = Error: spawn python ENOENT
    > stdErr = 
08:51:51.037 [info] Dispose Kernel '~/REPO_OBSCURED/ran_notebooks/testing.ipynb' associated with '~/REPO_OBSCURED/ran_notebooks/testing.ipynb'
08:51:51.038 [error] Error in execution Error: The kernel died. Error: ... View Jupyter [log](command:jupyter.viewOutput) for further details.
    > Kernel Id = .python3./python./.-m#ipykernel_launcher
    > at new r (/home/~/.vscode/extensions/ms-toolsai.jupyter-2024.5.0-linux-x64/dist/extension.node.js:108:4480)
    > originalException = Error: spawn python ENOENT
    > stdErr = 
08:51:51.038 [error] Error in execution (get message for cell) Error: The kernel died. Error: ... View Jupyter [log](command:jupyter.viewOutput) for further details.
    > Kernel Id = .python3./python./.-m#ipykernel_launcher
    > at new r (/home/~/.vscode/extensions/ms-toolsai.jupyter-2024.5.0-linux-x64/dist/extension.node.js:108:4480)
    > originalException = Error: spawn python ENOENT
    > stdErr = 
08:52:57.614 [error] Failed to install Python Extension via Kernel Picker command
08:52:57.615 [warn] DataScience Error Error: Failed to install the Python Extension.
    at ab.installPythonExtensionViaKernelPicker (/home/~/.vscode/extensions/ms-toolsai.jupyter-2024.5.0-linux-x64/dist/extension.node.js:314:34577)
    at h (/snap/code/162/usr/share/code/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:153:200468)
08:53:40.742 [error] Failed to install Python Extension via Kernel Picker command
08:53:40.743 [warn] DataScience Error Error: Failed to install the Python Extension.
    at ab.installPythonExtensionViaKernelPicker (/home/~/.vscode/extensions/ms-toolsai.jupyter-2024.5.0-linux-x64/dist/extension.node.js:314:34577)
    at h (/snap/code/162/usr/share/code/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:153:200468)

Coding Language and Runtime Version

Python 3.10.12

Language Extension Version (if applicable)

v2024.8.1

Anaconda Version (if applicable)

No response

Running Jupyter locally or remotely?

Local

hnry-m commented 1 week ago

+1 to this. Facing same issue but on a remotely running Jupyter.

DonJayamanne commented 1 week ago

@hnry-m When you say remotely running Jupyter, are you connecting to a Jupyter server (not VS Code) thats running on a different machine? If thats the case, please file a separate issue, this is not an issue with remote and unlikely to be related.

DonJayamanne commented 1 week ago

@zacps Thank you for filing this issue. It looks like you have selected a Jupyter kernel, however the kernel points to python instead of pointing to the fully qualified path to the python exe.

Suggestions, please can you select a Python Environment instead of selecting the Jupyter Kernel and try that. The reason this would happen is if you have Python installed in some non-global location or the like and Python is not in your current PATH.

DonJayamanne commented 1 week ago

This broke suddenly, without any obvious changes on my part (as far as I know).

Most likely cause is python is no longer in your PATH (env variable) Or you have selected Jupyter Kernel instead of selecting a Python Environment.

zacps commented 1 week ago

@DonJayamanne python is, and always has been, available in PATH. I realised after posting this issue it occurs only in one folder (implicit workspace).

There are no settings configured differently as far as I know, except for these:

{
  "python.testing.pytestArgs": [
    "tests"
  ],
  "python.testing.pytestEnabled": true,
  "python.testing.unittestEnabled": false
}

which shouldn't make any difference and change nothing if removed.

The environment I want to use is a local virtual environment., but none other than one old explicitly registered kernel work.

I imagine the problem is due to the broken path /home/~/.vscode/extensions/ms-toolsai.jupyter-2024.5.0-linux-x64/dist/... referred to in the logs.

baseline0 commented 1 week ago

+1 to issue. encountered while using jupyter-server and remote-ssh extension for vscode.

DonJayamanne commented 1 week ago

@baseline0 @zacps Please could you enable logging as follows:

Open settings & go into Jupyter->Logging
Change the value to verbose
Reload VS Code,
Attempt to repro the issue & then copy the output from the Jupyter output panel.

DonJayamanne commented 1 week ago

This message indicates that python is not in PATH I'd like the logs to see what Python is used.

08:51:51.019 [error] Kernel died Error: spawn python ENOENT
    at Process.ChildProcess._handle.onexit (node:internal/child_process:286:19)
    at onErrorNT (node:internal/child_process:484:16)
    at processTicksAndRejections (node:internal/process/task_queues:82:21) {
  errno: -2,
  code: 'ENOENT',
  syscall: 'spawn python',
  path: 'python',
  spawnargs: [
    '-m',
    'ipykernel_launcher',
    '--f=/home/~/.local/share/jupyter/runtime/kernel-v2-2311178cDwjhvlbJF.json'
  ]

VSCodeTriageBot commented 22 hours ago

This issue has been closed automatically because it needs more information and has not had recent activity. See also our issue reporting guidelines.

Happy Coding!

microsoft / vscode-jupyter