Terminal shows venv activation

[ulugbekna]

Type: Bug

Behaviour

If I have a venv in my workspace folder, when I launch terminal, I see source /Users/ulugbekna/code/my-project/venv/bin/activate every time.

CleanShot.2025-02-18.at.14.38.29.mp4

Steps to reproduce:

1. Have a venv that's python extension interpreter set at
2. Create terminal - 🐛 see the source ...

(maybe I have some specific setup that causes this)

Diagnostic data

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

XXX

Extension version: 2025.1.2025021801
VS Code version: Code - Insiders 1.98.0-insider (e20adc3, 2025-02-17T05:04:55.143Z)
OS version: Darwin arm64 24.3.0
Modes:

• Python version (& distribution if applicable, e.g. Anaconda): 3.13.0.final.0
• Type of virtual environment used (e.g. conda, venv, virtualenv, etc.): System
• Value of the python.languageServer setting: Default

User Settings

languageServer: "Pylance"

Installed Extensions

Extension Name	Extension Id	Version
black-formatter	ms-	2024.6.0
Bookmarks	ale	13.5.0
codespaces	Git	1.17.3
copilot	Git	1.272.1380
copilot-chat	Git	0.25.2025021801
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debug-value-editor	ms-	0.1.0
debugpy	ms-	2025.1.2025021701
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vscode-github-issue-notebooks	ms-	0.0.130
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vscode-jupyter-cell-tags	ms-	0.1.9
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vscode-pull-request-github	Git	0.105.2025021804
vscode-pylance	ms-	2025.2.1
vscode-python-envs	ms-	0.3.10441011
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wasm-dwarf-debugging	ms-	1.0.1
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System Info

Item	Value
CPUs	Apple M1 Pro (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)	4, 4, 5
Memory (System)	32.00GB (0.13GB free)
Process Argv	--log github.vscode-pull-request-github=debug --log github.copilot-chat=trace --crash-reporter-id 3184aec0-4b31-4764-bfb0-162155975430
Screen Reader	no
VM	0%

A/B Experiments

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pythonait:30973460
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pythonrstrctxt:31093868
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dwcopilot:31158714
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jda6j935:31233686
copilothoveron:31237050
g941i948:31240199

[anthonykim1]

Hey @ulugbekna thanks for filing this.
In fact, this isnt a regression, this is the behavior you get if you opt out of the terminal env var activation experiment.
You are just seeing the activation command on your terminal instead of having the Python extension implicitly activate your environment (which happens in when you are opt into the terminal env var activation experiment).

You can try opting into the experiment if you want to stick to "not seeing the activation command", but we eventually plan to remove the terminal experiment. Here are some relevant reads: #24567 and feel free to contribute your ideas to #24759 :)

[ulugbekna]

@anthonykim1 thank you for getting back on this! I can't remember changing anything around env activation. How can I opt into this activation experiment again?

[anthonykim1]

Sorry this is super late @ulugbekna , you can opt into via:

  "python.experiments.optInto": [
    "pythonTerminalEnvVarActivation"
  ],

but we are planning to deprecate this in favor of shell activation coming from python environment extension.

Do you want to try out the Python environment extension(https://marketplace.visualstudio.com/items?itemName=ms-python.vscode-python-envs) with

python-envs.terminal.autoActivationType set to shell startup?
This is supposed to be the "better"/"proper" activation without showing the source... activate on your terminal.