Formatting issue for venv activations on the terminal

[songyang-dev]

Type: Bug

Behaviour

The (.venv) marker in the terminal is not formatted properly. Right now, it is just plain text .venv and immediately with no spacing follows the user@machine. It used to be (.venv) user@machine.

Steps to reproduce:

1. Create a venv folder.
2. Close and reopen VS Code.

Diagnostic data

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

2024-12-03 13:37:16.239 [info] Experiment 'pythonRecommendTensorboardExt' is active
2024-12-03 13:37:16.239 [info] Experiment 'pythonTerminalEnvVarActivation' is active
2024-12-03 13:37:16.239 [info] Experiment 'pythonTestAdapter' is active
2024-12-03 13:37:16.239 [info] Native locator: Refresh started
2024-12-03 13:37:16.239 [info] > pyenv which python
2024-12-03 13:37:16.239 [info] cwd: .
2024-12-03 13:37:16.245 [info] > conda info --json
2024-12-03 13:37:16.259 [info] Python interpreter path: ./.venv/bin/python
2024-12-03 13:37:16.276 [info] Native locator: Refresh finished in 490 ms
2024-12-03 13:37:16.284 [info] > . ./.venv/bin/activate && echo 'e8b39361-0157-4923-80e1-22d70d46dee6' && python ~/.vscode/extensions/ms-python.python-2024.20.0-darwin-arm64/python_files/printEnvVariables.py
2024-12-03 13:37:16.284 [info] shell: zsh
2024-12-03 13:37:16.324 [info] > /Library/Developer/CommandLineTools/usr/bin/python3 ~/.vscode/extensions/ms-python.python-2024.20.0-darwin-arm64/python_files/printEnvVariables.py
2024-12-03 13:37:16.324 [info] shell: zsh
2024-12-03 13:37:16.354 [info] Prepending environment variable PATH in collection with /Users/songyang/.vscode/extensions/ms-python.python-2024.20.0-darwin-arm64/python_files/deactivate/zsh:/Users/songyang/Documents/Outlier/.venv/bin: {"applyAtShellIntegration":true,"applyAtProcessCreation":true}
2024-12-03 13:37:16.354 [info] Setting environment variable VIRTUAL_ENV in collection to /Users/songyang/Documents/Outlier/.venv {"applyAtShellIntegration":true,"applyAtProcessCreation":true}
2024-12-03 13:37:16.354 [info] Setting environment variable VIRTUAL_ENV_PROMPT in collection to .venv {"applyAtShellIntegration":true,"applyAtProcessCreation":true}
2024-12-03 13:37:16.354 [info] Prepending environment variable PS1 in collection with .venv {"applyAtShellIntegration":true,"applyAtProcessCreation":false}
2024-12-03 13:37:16.354 [info] Send text to terminal: /Library/Developer/CommandLineTools/usr/bin/python3 /Users/songyang/.vscode/extensions/ms-python.python-2024.20.0-darwin-arm64/python_files/printEnvVariablesToFile.py /Users/songyang/.vscode/extensions/ms-python.python-2024.20.0-darwin-arm64/python_files/deactivate/zsh/envVars.txt
2024-12-03 13:37:26.369 [info] Starting Pylance language server.

Extension version: 2024.20.0
VS Code version: Code 1.95.3 (Universal) (f1a4fb101478ce6ec82fe9627c43efbf9e98c813, 2024-11-13T14:50:04.152Z)
OS version: Darwin arm64 24.1.0
Modes:

• Python version (& distribution if applicable, e.g. Anaconda): 3.13.0
• Type of virtual environment used (e.g. conda, venv, virtualenv, etc.): Venv
• Value of the python.languageServer setting: Default

User Settings

languageServer: "Pylance"

Installed Extensions

Extension Name	Extension Id	Version
Bash IDE	mads-hartmann.bash-ide-vscode	1.43.0
Bun for Visual Studio Code	oven.bun-vscode	0.0.23
C/C++	ms-vscode.cpptools	1.22.11
CodeLLDB	vadimcn.vscode-lldb	1.11.1
Dart	Dart-Code.dart-code	3.102.0
Dev Containers	ms-vscode-remote.remote-containers	0.388.0
Edit csv	janisdd.vscode-edit-csv	0.10.0
ESLint	dbaeumer.vscode-eslint	3.0.10
Even Better TOML	tamasfe.even-better-toml	0.19.2
Flutter	Dart-Code.flutter	3.102.0
Flutter Riverpod Snippets	robert-brunhage.flutter-riverpod-snippets	1.2.2
GitHub Copilot	GitHub.copilot	1.246.0
GitHub Copilot Chat	GitHub.copilot-chat	0.22.4
Go	golang.go	0.42.1
HTML CSS Support	ecmel.vscode-html-css	2.0.11
JavaScript (ES6) code snippets	xabikos.JavaScriptSnippets	1.8.0
JavaScript Debugger	ms-vscode.js-debug	1.95.3
JavaScript Debugger Companion Extension	ms-vscode.js-debug-companion	1.1.3
Jupyter	ms-toolsai.jupyter	2024.10.0
Jupyter Cell Tags	ms-toolsai.vscode-jupyter-cell-tags	0.1.9
Jupyter Keymap	ms-toolsai.jupyter-keymap	1.1.2
Jupyter Notebook Renderers	ms-toolsai.jupyter-renderers	1.0.21
Jupyter Slide Show	ms-toolsai.vscode-jupyter-slideshow	0.1.6
Live Server	ritwickdey.LiveServer	5.7.9
npm Intellisense	christian-kohler.npm-intellisense	1.4.5
Prettier - Code formatter	esbenp.prettier-vscode	11.0.0
Pylance	ms-python.vscode-pylance	2024.11.3
Python	ms-python.python	2024.20.0
Python Debugger	ms-python.debugpy	2024.12.0
Rainbow CSV	mechatroner.rainbow-csv	3.13.0
Remote - SSH	ms-vscode-remote.remote-ssh	0.115.1
Remote - SSH: Editing Configuration Files	ms-vscode-remote.remote-ssh-edit	0.87.0
Remote - Tunnels	ms-vscode.remote-server	1.5.2
Remote Development	ms-vscode-remote.vscode-remote-extensionpack	0.26.0
Remote Explorer	ms-vscode.remote-explorer	0.4.3
rust-analyzer	rust-lang.rust-analyzer	0.3.2204
Svg Preview	SimonSiefke.svg-preview	2.8.3
Swift	sswg.swift-lang	1.11.3
Table Visualizer for JavaScript Profiles	ms-vscode.vscode-js-profile-table	1.0.10
vscode-icons	vscode-icons-team.vscode-icons	12.9.0
Vue - Official	Vue.volar	2.1.10
WSL	ms-vscode-remote.remote-wsl	0.88.5

System Info

Item	Value
CPUs	Apple M3 (8 x 2400)
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: enabled webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off
Load (avg)	2, 2, 2
Memory (System)	8.00GB (0.09GB free)
Process Argv	--crash-reporter-id 0d9ea874-4610-42fd-bd74-f3c5a189aa3b
Screen Reader	yes
VM	0%

A/B Experiments

vsliv368:30146709
vspor879:30202332
vspor708:30202333
vspor363:30204092
vscod805cf:30301675
binariesv615:30325510
vsaa593:30376534
py29gd2263:31024239
c4g48928:30535728
azure-dev_surveyone:30548225
a9j8j154:30646983
962ge761:30959799
pythonnoceb:30805159
asynctok:30898717
pythonmypyd1:30879173
h48ei257:31000450
pythontbext0:30879054
cppperfnew:31000557
dsvsc020:30976470
pythonait:31006305
dsvsc021:30996838
dvdeprecation:31068756
dwnewjupyter:31046869
newcmakeconfigv2:31071590
nativerepl1:31139838
pythonrstrctxt:31112756
nativeloc1:31192215
cf971741:31144450
iacca1:31171482
notype1:31157159
5fd0e150:31155592
dwcopilot:31170013
stablechunks:31184530

[anthonykim1]

Hi @songyang-dev Thanks for filing this issue.
Can you please add
"python.experiments.optOutFrom": ["pythonTerminalEnvVarActivation"], to your settings.json and see if the issue persists?
Thanks.

[songyang-dev]

The issue disappeared as you can see from the screenshot. But there is no more venv active.

[maxdymond]

I noticed this as well; one workaround is to specify the prompt when creating the venv:

python3.13 -m venv --prompt "(.venv) " .venv

Without it I was getting:

- `VIRTUAL_ENV_PROMPT=.venv`
- `PS1=.venv${env:PS1}`

in the Environment changes tab for a terminal.

[github-actions]

Hey @anthonykim1, this issue might need further attention.

@songyang-dev, you can help us out by closing this issue if the problem no longer exists, or adding more information.

[songyang-dev]

This issue still persists.

[anthonykim1]

Looking at your prompt PS1, it looks like you are using special prompts (those in which will add something to your .zshrc or other shell init files that will modify PS1 to look different). Terminal env var experiment would have no idea what is inside your .zshrc file hence the messed up prompt value :/

With opting out the terminal env var experiment, it is supposed to send in manual activation command to your terminal. I'm surprised that did not happen.

Can you try to source activate manually yourself? I wonder if manually activating yourself will preserve the state.

Also what happens if you change your Python locator from native to js? @songyang-dev

[songyang-dev]

Hey @anthonykim1 !

I tried your suggestion. I ran source .venv/bin/activate inside a non-activated terminal and the environment format is correct. But letting VS Code activate it makes it incorrect.