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.