Python environments failing to be found

[inobrevi]

Environment data

• VS Code version: Version: 1.64.0 (system setup)
• Jupyter Extension version (available under the Extensions sidebar): v2022.1.1001775990
• Python Extension version (available under the Extensions sidebar): v2022.0.1786462952
• OS (Windows | Mac | Linux distro) and version: Windows_NT x64 10.0.19042
• Python and/or Anaconda version: 3.9 and 3.10
• Type of virtual environment used (N/A | venv | virtualenv | conda | ...): ALL
• Jupyter server running: Local

Expected behaviour

Jupyter should find at least one environment and everything was working fine until it didn't.

Actual behaviour

No environment/kernels available/detected.

Steps to reproduce:

[NOTE: Self-contained, minimal reproducing code samples are extremely helpful and will expedite addressing your issue]

UNKNOWN, just started to not work. I reinstalled and restarted almost everything, only didn't reinstall the whole system.
Started with numpy not having some libraries (with no changes to anything), I reinstalled Anaconda, restarted everything. Anaconda works in Poweshell and loads correctly. I tried every trick to reset and do it right. Nothing worked.

Logs

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

Visual Studio Code (1.64.0, undefined, desktop)
Jupyter Extension Version: 2022.1.1001775990.
Python Extension Version: 2022.0.1786462952.
User belongs to experiment group 'jupyterTestcf'
User belongs to experiment group 'jupyterEnhancedDataViewer'
Info 11:42:22: ZMQ install verified.
Info 11:42:23: Experiment status for python is {"enabled":true,"optInto":[],"optOutFrom":[]}
Warn 11:42:26: Unable to create a controller for jupyter-notebook without an active interpreter.
Info 11:42:26: Find preferred kernel for c:\Users\[notebook_path].ipynb with metadata {"interpreter":{"hash":"f0eb7952fea26dd991a448ee1aa1847a5c0ca351d8848665d51ebfd4896d4292"},"kernelspec":{"display_name":"Python 3.9.7 ('base')","language":"python","name":"python3"},"language_info":{"codemirror_mode":{"name":"ipython","version":3},"file_extension":".py","mimetype":"text/x-python","name":"python","nbconvert_exporter":"python","pygments_lexer":"ipython3","version":"3.9.7"},"orig_nbformat":4} & preferred interpreter 
Info 11:56:48: Loading webview. View is notset
Info 11:56:48: Loading web view...
Info 11:56:48: Webview panel created.
Info 11:56:49: Web view react rendered
Info 11:56:50: Searching for token colors ...
Info 11:56:50: Attempting search for colors ...
Info 11:56:50: Loading colors from c:\Program Files\Microsoft VS Code\resources\app\extensions\theme-defaults\themes\dark_plus.json ...
Info 11:56:50: Attempting search for colors ...
Info 11:56:50: Loading base colors from c:\Program Files\Microsoft VS Code\resources\app\extensions\theme-defaults\themes\dark_plus.json ...
Info 11:56:51: Using colors to generate CSS ...
Info 11:57:17: Searching for token colors ...
Info 11:57:17: Attempting search for colors ...
Info 11:57:17: Loading colors from c:\Program Files\Microsoft VS Code\resources\app\extensions\theme-defaults\themes\dark_plus.json ...
Info 11:57:17: Attempting search for colors ...
Info 11:57:17: Loading base colors from c:\Program Files\Microsoft VS Code\resources\app\extensions\theme-defaults\themes\dark_plus.json ...
Info 11:57:17: Using colors to generate CSS ...
Info 19:28:21: Searching for token colors ...
Info 19:28:21: Attempting search for colors ...
Info 19:28:21: Loading colors from c:\Program Files\Microsoft VS Code\resources\app\extensions\theme-defaults\themes\dark_plus.json ...
Info 19:28:21: Attempting search for colors ...
Info 19:28:21: Loading base colors from c:\Program Files\Microsoft VS Code\resources\app\extensions\theme-defaults\themes\dark_plus.json ...
Info 19:28:21: Using colors to generate CSS ...
Info 19:28:32: Searching for token colors ...
Info 19:28:32: Attempting search for colors ...
Info 19:28:32: Loading colors from c:\Program Files\Microsoft VS Code\resources\app\extensions\theme-defaults\themes\dark_plus.json ...
Info 19:28:32: Attempting search for colors ...
Info 19:28:32: Loading base colors from c:\Program Files\Microsoft VS Code\resources\app\extensions\theme-defaults\themes\dark_plus.json ...
Info 19:28:32: Using colors to generate CSS ...
Info 19:29:00: Searching for token colors ...
Info 19:29:00: Attempting search for colors ...
Info 19:29:00: Loading colors from c:\Program Files\Microsoft VS Code\resources\app\extensions\theme-defaults\themes\dark_plus.json ...
Info 19:29:00: Attempting search for colors ...
Info 19:29:00: Loading base colors from c:\Program Files\Microsoft VS Code\resources\app\extensions\theme-defaults\themes\dark_plus.json ...
Info 19:29:00: Using colors to generate CSS ...
Info 19:29:41: Searching for token colors ...
Info 19:29:41: Attempting search for colors ...
Info 19:29:41: Loading colors from c:\Program Files\Microsoft VS Code\resources\app\extensions\theme-defaults\themes\dark_plus.json ...
Info 19:29:41: Attempting search for colors ...
Info 19:29:41: Loading base colors from c:\Program Files\Microsoft VS Code\resources\app\extensions\theme-defaults\themes\dark_plus.json ...
Info 19:29:41: Using colors to generate CSS ...

[rchiodo]

Thanks for the issue. Jupyter output log can be found here:

Can you try posting the contents of that panel? It should show the results from us trying to find kernels.

[inobrevi]

Ok, I found it. Edited into original post.

[rchiodo]

Can you include the python output as well? We ask the python extension for the list of interpreters on the machine. That output makes it look like the python extension didn't find any.

[inobrevi]

Infinite stream of:

[ERROR 2022-1-8 19:40:23.137]: No python is installed or a refresh has not already been triggered

Well, seems like it is not jupyter problem...

[inobrevi]

Experiment 'pythonaacf' is active
Experiment 'pythonTensorboardExperiment' is active
Experiment 'PythonPyTorchProfiler' is active
Experiment 'pythonDeprecatePythonPath' is active
[ERROR 2022-1-8 11:42:26.290]: [SyntaxError: Invalid regular expression: /c:(\\|/)Users(\\|/)[user_name](\\|/)[path](\\|/)[patch](\\|/)[patch]/: Range out of order in character class
	at new RegExp (<anonymous>)
	at h (c:\Users\[user_name]\.vscode\extensions\ms-python.python-2022.0.1786462952\out\client\extension.js:104:312461)
	at d.getDisplayCommands (c:\Users\[user_name]\.vscode\extensions\ms-python.python-2022.0.1786462952\out\client\extension.js:104:312240)
	at d.logProcess (c:\Users\[user_name]\.vscode\extensions\ms-python.python-2022.0.1786462952\out\client\extension.js:104:311978)
	at s.emit (events.js:315:20)
	at shellExec (c:\Users\[user_name]\.vscode\extensions\ms-python.python-2022.0.1786462952\out\client\extension.js:52:33373)
	at Object.t.shellExecute (c:\Users\[user_name]\.vscode\extensions\ms-python.python-2022.0.1786462952\out\client\extension.js:24:74106)
	at processTicksAndRejections (internal/process/task_queues.js:93:5)
	at async Object.t.getInterpreterInfo (c:\Users\[user_name]\.vscode\extensions\ms-python.python-2022.0.1786462952\out\client\extension.js:104:31827)
	at async c.p [as workerFunc] (c:\Users\[user_name]\.vscode\extensions\ms-python.python-2022.0.1786462952\out\client\extension.js:52:5037)
	at async start (c:\Users\[user_name]\.vscode\extensions\ms-python.python-2022.0.1786462952\out\client\extension.js:104:29648)]

Begging of log

[rchiodo]

Okay I'll transfer your issue to the python team.

[karrtikr]

Closing as dup of #18437

[inobrevi]

Duplicate didn't help my case.
I reinstalled the VS Code (deleting Code and .vscode folders also). Reinstalling clean python 3.10.2 still didn't work.
Python is directly on C drive so there is no complicated path or name. Also tested in user space. It is registered in path. It should work as always.

Everything was working fine until last update of VS Code (python extension to be exact)

Edit: downgrading to v2021.12.1559732655 fixed problem for me. That means that something is wrong with newest version. Please fix it.

I would say that this is more dub of #18436

[karrtikr]

Fix should be out in the pre-release version of the extension in a day, use the following to try it out: