python syntax highlight, intellisense, and other feature stop working

[moataz-imad]

Type: Bug

when i open a file in jupyter notebook in vs code, sometimes the following state occurs:
1- the syntax coloring stops working, all text is white except strings and comments, (no colors for variables)
2- i cant hover and ctrl+ click on a variable, its like it is not recognize as anything, or the interpreter/kernel? is frozen
3- intellisense also does not work, when i type a variable it does not recognize it as an already defined variable above, so color is white, and when trying to apply on it something it does not give suggestion, even when clicking ctrl+space it keeps on searching without results

I tried restarting the kernel, selecting different kernel, closing and reopening the notebook, closing and reopening vs code, deleting and reinstalling vscode, usually it does not work.
i created a new notebook and started filling it with same cells, it fills normally without the issue, but i cant keep doing that every while

VS Code version: Code 1.81.0 (6445d93, 2023-08-02T12:37:13.485Z)
OS version: Windows_NT x64 10.0.19045
Modes:

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-8565U CPU @ 1.80GHz (8 x 1992)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: disabled_off direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok video_decode: enabled video_encode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: enabled
Load (avg)	undefined
Memory (System)	15.86GB (7.19GB free)
Process Argv	--crash-reporter-id b64a845e-1ccc-4c3d-8b11-05fe54bf5ac9
Screen Reader	no
VM	0%

Extensions (47)

Extension	Author (truncated)	Version
vscode-sqlite	ale	0.14.1
doxdocgen	csc	1.4.0
vscode-mysql-client2	cwe	6.6.9
vscode-html-css	ecm	1.13.1
code-runner	for	0.12.0
codespaces	Git	1.14.15
gc-excelviewer	Gra	4.2.57
better-cpp-syntax	jef	1.17.2
vsc-python-indent	Kev	1.18.0
vscode-clang	mit	0.2.4
data-workspace-vscode	ms-	0.5.0
mssql	ms-	1.20.1
sql-bindings-vscode	ms-	0.4.0
sql-database-projects-vscode	ms-	1.2.0
black-formatter	ms-	2023.4.1
isort	ms-	2023.10.1
python	ms-	2023.15.12191008
vscode-pylance	ms-	2023.8.20
jupyter	ms-	2023.7.1002162226
jupyter-keymap	ms-	1.1.2
jupyter-renderers	ms-	1.0.17
vscode-jupyter-cell-tags	ms-	0.1.8
vscode-jupyter-slideshow	ms-	0.1.5
remote-containers	ms-	0.304.0
remote-ssh	ms-	0.102.0
remote-wsl	ms-	0.81.0
cmake-tools	ms-	1.15.31
cpptools	ms-	1.16.3
cpptools-extension-pack	ms-	1.3.0
powershell	ms-	2023.6.0
remote-explorer	ms-	0.4.1
remote-server	ms-	1.4.0
material-icon-theme	PKi	4.29.0
vscode-css-peek	pra	4.4.1
sqlite-viewer	qwt	0.3.13
vscode-xml	red	0.26.1
LiveServer	rit	5.7.9
cmake	twx	0.0.17
lorem-ipsum	Tyr	1.3.1
errorlens	use	3.13.0
intellicode-api-usage-examples	Vis	0.2.7
vscodeintellicode	Vis	1.2.30
footsteps	Wat	0.5.0
jinja	who	0.0.8
clang-format	xav	1.9.0
markdown-all-in-one	yzh	3.5.1
html-css-class-completion	Zig	1.20.0

(1 theme extensions excluded)

A/B Experiments

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pythongtdpath:30769146
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[VSCodeTriageBot]

Thanks for creating this issue! It looks like you may be using an old version of VS Code, the latest stable release is 1.81.1. Please try upgrading to the latest version and checking whether this issue remains.

Happy Coding!

[jzazo]

This happens to me too. I normally hit ctrl + shift + p, and type Developer: reload window. Then intellisense starts working again until it stops.

[rebornix]

/duplicate of microsoft/pylance-release#4742