Wrong python version displayed for venv

[JohnAtl]

Type: Bug

I use uv to create my venvs.
I have requires-python = "==3.12.*" in my pyproject.toml.
I can create and activate the environment.
python --version says "Python 3.12.9".
which python says /mypath/.venv/bin/python.
I run vscode using code ., and it activates the .venv, but the version shown is 3.11.9.
I can switch to another python, then select my venv again (which shows 3.12.9 in the list), and again, it says 3.11.9.
I've verified that python.defaultInterpreterPath is set to /mypath/.venv.
If I run python --version in the terminal in vscode, it prints the correct version, 3.12.9.
I can run the following cells in a notebook:

!which python
# /mypath/.venv/bin/python
print(sys.version)
# 3.12.9 (main, Feb  4 2025, 14:38:38) [GCC 11.4.0]

So it appears to be using the correct venv and python version, yet the interface still shows the old version.

With a .py file open, the same behavior is seen when selecting the python version from the footerbar. The version show is Python 3.11.9 ('.venv'), yet if I print(sys.version) from a .py file, the correct 3.12.9 version is printed. Selecting the python intepreter by clicking on the footerbar lists my venv with the correct version 3.12.9, but after selecting it, the footerbar still displays 3.11.9.

VS Code version: Code 1.98.0 (6609ac3, 2025-03-04T21:06:18.612Z)
OS version: Linux x64 6.12.13-200.fc41.x86_64
Modes:

System Info

Item	Value
CPUs	13th Gen Intel(R) Core(TM) i9-13900K (32 x 5500)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: enabled_on 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 skia_graphite: disabled_off video_decode: enabled video_encode: disabled_software vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: disabled_off webnn: disabled_off
Load (avg)	2, 2, 2
Memory (System)	125.48GB (94.17GB free)
Process Argv	--crash-reporter-id 9af3d6d8-6596-447a-874f-1c746b0e63a4
Screen Reader	no
VM	0%
DESKTOP_SESSION	gnome
XDG_CURRENT_DESKTOP	GNOME
XDG_SESSION_DESKTOP	gnome
XDG_SESSION_TYPE	wayland

Extensions (36)

Extension	Author (truncated)	Version
Bookmarks	ale	13.5.0
markdown-mermaid	bie	1.27.0
catppuccin-vsc	Cat	3.16.1
ruff	cha	2025.18.0
githistory	don	0.6.20
xml	Dot	2.5.1
copilot	Git	1.284.0
copilot-chat	Git	0.25.1
vscode-github-actions	git	0.27.1
dvc	ite	1.2.27
plantuml	jeb	2.18.1
rainbow-csv	mec	3.18.0
git-graph	mhu	1.30.0
vscode-docker	ms-	1.29.4
debugpy	ms-	2025.4.1
mypy-type-checker	ms-	2025.2.0
pylint	ms-	2025.2.0
python	ms-	2025.2.0
vscode-pylance	ms-	2025.3.2
jupyter	ms-	2025.2.0
jupyter-keymap	ms-	1.1.2
jupyter-renderers	ms-	1.1.0
tensorboard	ms-	2023.10.1002992421
vscode-jupyter-cell-tags	ms-	0.1.9
vscode-jupyter-slideshow	ms-	0.1.6
remote-containers	ms-	0.401.0
remote-ssh	ms-	0.118.0
remote-ssh-edit	ms-	0.87.0
remote-explorer	ms-	0.4.3
material-icon-theme	PKi	5.20.0
vscode-xml	red	0.28.0
vscode-yaml	red	1.17.0
even-better-toml	tam	0.21.2
gcp-switch-config	tik	2.2.7
pdf	tom	1.2.2
vscode-todo-highlight	way	1.0.5

(2 theme extensions excluded)

A/B Experiments

vsliv368:30146709
vspor879:30202332
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vspor363:30204092
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py29gd2263:31024239
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azure-dev_surveyone:30548225
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pythontbext0:30879054
cppperfnew:31000557
dwnewjupytercf:31046870
nativerepl2:31139839
pythonrstrctxt:31112756
nativeloc1:31192215
iacca1:31171482
5fd0e150:31155592
dwcopilot:31170013
6074i472:31201624
dwoutputs:31242946
customenabled:31248079
8did9651:31230678
hdaa2157:31222309
copilot_t_ci:31222730
f5992895:31259995
jda6j935:31233686
bgtreat:31257678
fh1c7952:31258891
h6j33387:31256343
0339e702:31259951

[vs-code-engineering]

Thanks for creating this issue! It looks like you may be using an old version of VS Code, the latest stable release is 1.98.2. Please try upgrading to the latest version and checking whether this issue remains.

Happy Coding!