Cannot execute Python/Jupyter code - Need troubleshooting tool or guide.

Environment data

• VS Code version: XXX

Version: 1.55.0-insider (user setup)
Commit: c185983a683d14c396952dd432459097bc7f757f
Date: 2021-03-30T12:48:52.547Z
Electron: 11.3.0
Chrome: 87.0.4280.141
Node.js: 12.18.3
V8: 8.7.220.31-electron.0
OS: Windows_NT x64 10.0.19041

• Jupyter Extension version (available under the Extensions sidebar): XXX
• Python Extension version (available under the Extensions sidebar): XXX

• OS (Windows | Mac | Linux distro) and version: Windows + WSL (Ubuntu 20.04)
• Python and/or Anaconda version: XXX
• Type of virtual environment used (N/A | venv | virtualenv | conda | …): XXX
• Jupyter server running: Local | Remote | N/A

Can’t run even a simple Python cell in Jupyter (native notebook)

Dev Tools Console:

Steps to reproduce:

• New notebook
• New Code Cell

print("hello world")

• Press run button

Results:

• Sometimes I get the “Connecting to kernel: Python 3” message, sometimes nothing

Logs

Output for Jupyter in the Output panel (View→Output, change the drop-down the upper-right of the Output panel to Jupyter)

User belongs to experiment group 'pythonJediLSP'
User belongs to experiment group 'jupyterTestcf'
User belongs to experiment group 'pythonDiscoveryModule'
User belongs to experiment group 'pythonFindInterpreter'
User belongs to experiment group 'NativeNotebookEditor'
Info 2021-03-30 12:56:31: ZMQ install verified.
Info 2021-03-30 12:56:31: Attempting to start a server because of preload conditions ...
Info 2021-03-30 12:56:31: Found existing keyfile at /home/chrisdias/.vscode-server-insiders/data/User/globalStorage/ms-toolsai.jupyter/nbsecret
Info 2021-03-30 12:56:32: Checking if notebook is trusted
Info 2021-03-30 12:56:32: Check if Notebook is Trusted, Class name = p, completed in 74ms, has a truthy return value, Return Value: true
Info 2021-03-30 12:56:33: Attempting to start a server because of preload conditions ...
Info 2021-03-30 12:56:33: Search all interpreters /bin/python2, /bin/python3, /usr/bin/python2, /usr/bin/python3
Info 2021-03-30 12:56:34: Loading kernelspec from /home/chrisdias/.local/share/jupyter/kernels/python3/kernel.json for undefined
Info 2021-03-30 12:56:34: findPreferredKernel score for Python 3 is 15
Info 2021-03-30 12:56:34: findPreferredKernel score for Python 2.7.18 64-bit is 1
Info 2021-03-30 12:56:34: findPreferredKernel score for Python 3.8.5 64-bit is 1
Info 2021-03-30 12:56:34: findPreferredKernel score for Python 2.7.18 64-bit is 1
Info 2021-03-30 12:56:34: findPreferredKernel score for Python 3.8.5 64-bit is 1
Info 2021-03-30 12:56:34: Find kernel spec, Class name = D, completed in 4ms, has a truthy return value, Arg 1: <Uri:/home/chrisdias/src/mvpSummit2021/wa_state_covid.ipynb>, Arg 2: {"kernelspec":{"display_name":"Python 3","language":"python","name":"python3"},"language_info":{"name":"python","version":""},"orig_nbformat":2}, Arg 3: {"_isCancelled":false,"_emitter":null}, Return Value: {"kind":"startUsingKernelSpec","kernelSpec":{"specFile":"/home/chrisdias/.local/share/jupyter/kernels/python3/kernel.json","name":"python3","argv":["python","-m","ipykernel_launcher","-f","{connection_file}"],"language":"python","path":"python","display_name":"Python 3"},"id":".python3.python..Python 3"}
Info 2021-03-30 12:56:34: KernelProvider switched kernel to id = .python3.python..Python 3}
Info 2021-03-30 12:56:34: Starting Notebook in kernel.ts id = .python3.python..Python 3
Info 2021-03-30 12:56:34: Creating raw notebook for file:///home/chrisdias/src/mvpSummit2021/wa_state_covid.ipynb
Info 2021-03-30 12:56:34: Getting preferred kernel for file:///home/chrisdias/src/mvpSummit2021/wa_state_covid.ipynb
Info 2021-03-30 12:56:34: Computing working directory file:///home/chrisdias/src/mvpSummit2021/wa_state_covid.ipynb
Info 2021-03-30 12:56:34: Connecting to raw session for file:///home/chrisdias/src/mvpSummit2021/wa_state_covid.ipynb with connection {"kind":"startUsingKernelSpec","kernelSpec":{"specFile":"/home/chrisdias/.local/share/jupyter/kernels/python3/kernel.json","name":"python3","argv":["python","-m","ipykernel_launcher","-f","{connection_file}"],"language":"python","path":"python","display_name":"Python 3"},"id":".python3.python..Python 3"}
Info 2021-03-30 12:56:34: Starting raw kernel Python 3
Info 2021-03-30 12:56:34: Kernel launching with ports 9000,9001,9002,9003,9004. Start port is 9000
Info 2021-03-30 12:56:34: Launching kernel daemon for Python 3 # undefined
Info 2021-03-30 12:56:34: No custom variables for Kernel as interpreter path is not defined for kernel Python 3
Info 2021-03-30 12:56:34: Creating daemon process for python with env variables count 0
Info 2021-03-30 12:56:35: Process Execution: > python ~/.vscode-server-insiders/extensions/ms-toolsai.jupyter-2021.5.700832604/pythonFiles/pyvsc-run-isolated.py vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.kernel_launcher_daemon -v
> python ~/.vscode-server-insiders/extensions/ms-toolsai.jupyter-2021.5.700832604/pythonFiles/pyvsc-run-isolated.py vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.kernel_launcher_daemon -v
Info 2021-03-30 12:56:35: Process Execution: > python ~/.vscode-server-insiders/extensions/ms-toolsai.jupyter-2021.5.700832604/pythonFiles/pyvsc-run-isolated.py vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.kernel_launcher_daemon -v
> python ~/.vscode-server-insiders/extensions/ms-toolsai.jupyter-2021.5.700832604/pythonFiles/pyvsc-run-isolated.py vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.kernel_launcher_daemon -v
Error 2021-03-30 12:56:40: Failed to start the Daemon, StdErr:  
Error 2021-03-30 12:56:40: Failed to start the Daemon, ProcEndEx [Error: spawn python ENOENT
	at Process.ChildProcess._handle.onexit (internal/child_process.js:267:19)
	at onErrorNT (internal/child_process.js:469:16)
	at processTicksAndRejections (internal/process/task_queues.js:84:21)] {
  errno: 'ENOENT',
  code: 'ENOENT',
  syscall: 'spawn python',
  path: 'python',
  spawnargs: [
    '/home/chrisdias/.vscode-server-insiders/extensions/ms-toolsai.jupyter-2021.5.700832604/pythonFiles/pyvsc-run-isolated.py',
    'vscode_datascience_helpers.daemon',
    '--daemon-module=vscode_datascience_helpers.kernel_launcher_daemon',
    '-v'
  ]
}
Error 2021-03-30 12:56:40: Failed  to start the Daemon, Ex [Error: Timeout waiting for daemon to start
	at Timeout._onTimeout (/home/chrisdias/.vscode-server-insiders/extensions/ms-toolsai.jupyter-2021.5.700832604/out/client/extension.js:32:241494)
	at listOnTimeout (internal/timers.js:549:17)
	at processTimers (internal/timers.js:492:7)]
Error 2021-03-30 12:56:40: Pinging Daemon Failed, Class name = d, completed in 5006ms, has a falsy return value, Arg 1: {}, Return Value: undefined [Error: Timeout waiting for daemon to start
	at Timeout._onTimeout (/home/chrisdias/.vscode-server-insiders/extensions/ms-toolsai.jupyter-2021.5.700832604/out/client/extension.js:32:241494)
	at listOnTimeout (internal/timers.js:549:17)
	at processTimers (internal/timers.js:492:7)]
Error 2021-03-30 12:56:40: Failed to create daemon, Class name = d, completed in 5091ms, has a falsy return value, , Return Value: undefined [Error: Timeout waiting for daemon to start
	at Timeout._onTimeout (/home/chrisdias/.vscode-server-insiders/extensions/ms-toolsai.jupyter-2021.5.700832604/out/client/extension.js:32:241494)
	at listOnTimeout (internal/timers.js:549:17)
	at processTimers (internal/timers.js:492:7)]
Error 2021-03-30 12:56:40: Failed to create the daemon service, defaulting to activated environment [Error: Timeout waiting for daemon to start
	at Timeout._onTimeout (/home/chrisdias/.vscode-server-insiders/extensions/ms-toolsai.jupyter-2021.5.700832604/out/client/extension.js:32:241494)
	at listOnTimeout (internal/timers.js:549:17)
	at processTimers (internal/timers.js:492:7)]
Info 2021-03-30 12:56:40: Process Execution: > python ~/.vscode-server-insiders/extensions/ms-toolsai.jupyter-2021.5.700832604/pythonFiles/pyvsc-run-isolated.py ipykernel_launcher --ip=127.0.0.1 --stdin=9003 --control=9001 --hb=9000 --Session.signature_scheme="hmac-sha256" --Session.key=b"a189c17a-f76f-457b-9e8f-1ae84a0397a4" --shell=9002 --transport="tcp" --iopub=9004 --f=/tmp/tmp-22067vfLSwP3a1ABS.json
> python ~/.vscode-server-insiders/extensions/ms-toolsai.jupyter-2021.5.700832604/pythonFiles/pyvsc-run-isolated.py ipykernel_launcher --ip=127.0.0.1 --stdin=9003 --control=9001 --hb=9000 --Session.signature_scheme="hmac-sha256" --Session.key=b"a189c17a-f76f-457b-9e8f-1ae84a0397a4" --shell=9002 --transport="tcp" --iopub=9004 --f=/tmp/tmp-22067vfLSwP3a1ABS.json
Info 2021-03-30 12:56:40: Process Execution: cwd: ~/src/mvpSummit2021
cwd: ~/src/mvpSummit2021
Info 2021-03-30 12:56:40: Process Execution: > python ~/.vscode-server-insiders/extensions/ms-toolsai.jupyter-2021.5.700832604/pythonFiles/pyvsc-run-isolated.py ipykernel_launcher --ip=127.0.0.1 --stdin=9003 --control=9001 --hb=9000 --Session.signature_scheme="hmac-sha256" --Session.key=b"a189c17a-f76f-457b-9e8f-1ae84a0397a4" --shell=9002 --transport="tcp" --iopub=9004 --f=/tmp/tmp-22067vfLSwP3a1ABS.json
> python ~/.vscode-server-insiders/extensions/ms-toolsai.jupyter-2021.5.700832604/pythonFiles/pyvsc-run-isolated.py ipykernel_launcher --ip=127.0.0.1 --stdin=9003 --control=9001 --hb=9000 --Session.signature_scheme="hmac-sha256" --Session.key=b"a189c17a-f76f-457b-9e8f-1ae84a0397a4" --shell=9002 --transport="tcp" --iopub=9004 --f=/tmp/tmp-22067vfLSwP3a1ABS.json
Info 2021-03-30 12:56:40: Process Execution: cwd: ~/src/mvpSummit2021
cwd: ~/src/mvpSummit2021
Info 2021-03-30 12:56:40: Launching kernel daemon, Class name = h, completed in 5695ms, has a truthy return value, Arg 1: <Uri:/home/chrisdias/src/mvpSummit2021/wa_state_covid.ipynb>, Arg 2: "/home/chrisdias/src/mvpSummit2021", Arg 3: {"specFile":"/home/chrisdias/.local/share/jupyter/kernels/python3/kernel.json","name":"python3","argv":["python","-m","ipykernel_launcher","--ip=127.0.0.1","--stdin=9003","--control=9001","--hb=9000","--Session.signature_scheme=\"hmac-sha256\"","--Session.key=b\"a189c17a-f76f-457b-9e8f-1ae84a0397a4\"","--shell=9002","--transport=\"tcp\"","--iopub=9004","--f=/tmp/tmp-22067vfLSwP3a1ABS.json"],"language":"python","path":"python","display_name":"Python 3"}, Arg 4: undefined, Return Value: 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Info 2021-03-30 12:56:40: Launching kernel in kernelProcess.ts, Class name = _, completed in 5696ms, has a truthy return value, Arg 1: "/home/chrisdias/src/mvpSummit2021", Return Value: 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Error 2021-03-30 12:56:40: Kernel died [Error: spawn python ENOENT
	at Process.ChildProcess._handle.onexit (internal/child_process.js:267:19)
	at onErrorNT (internal/child_process.js:469:16)
	at processTicksAndRejections (internal/process/task_queues.js:84:21)] {
  errno: 'ENOENT',
  code: 'ENOENT',
  syscall: 'spawn python',
  path: 'python',
  spawnargs: [
    '/home/chrisdias/.vscode-server-insiders/extensions/ms-toolsai.jupyter-2021.5.700832604/pythonFiles/pyvsc-run-isolated.py',
    'ipykernel_launcher',
    '--ip=127.0.0.1',
    '--stdin=9003',
    '--control=9001',
    '--hb=9000',
    '--Session.signature_scheme="hmac-sha256"',
    '--Session.key=b"a189c17a-f76f-457b-9e8f-1ae84a0397a4"',
    '--shell=9002',
    '--transport="tcp"',
    '--iopub=9004',
    '--f=/tmp/tmp-22067vfLSwP3a1ABS.json'
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} 

XXX

[chrisdias]

ok i deleted it and i’ll keep an eye out for changes.

i feel like a diagnostic tool for the kernels might be helpful… Imagine you run a command Jupyter: Validate Kernels which would “profile” each discovered kernelspec and generate a report that could be uploaded along with an issue.

Something like this (completely made up Status 😃 would have helped me pinpoint the problem, assuming you could run some sort of diagnostics against them.

Kernel	Platform	Location	Status
Python 2.7.18	64-bit	/bin/python2	OK
Python 2.7.18	64-bit	/usr/bin/python2	OK
Python 3	unknown	python	FAIL Could not find python
Python 3.8.5	64-bit	/bin/python3	OK
Python 3.8.5	64-bit	/usr/bin/python3	OK

[DonJayamanne]

Duplicate of https://github.com/microsoft/vscode-jupyter/issues/5291