Python REPL prompt garbled with shell integration escape sequences (]633;C...) in virtual environments on Ubuntu 24.04 #25505
Description
Type: Bug
Behaviour
The Python REPL prompt is garbled and displays raw shell integration escape sequences instead of the clean prompt . The prompt looks like this:
]633;C]633;E;None]633;D;0]633;A>>> ]633;B
It happens whenever I open the Python REPL from a virtual environment. The prompt should be clean and display only the standard characters:
>>>
Disabling ms-python.python solves the problem, but I lose all the benefits of the extension.
Additional Context & Troubleshooting
- The issue only occurs when a virtual environment is active. The system Python REPL displays the prompt correctly.
- The problem is definitively caused by the
ms-python.pythonextension, as confirmed using theHelp: Start Extension Bisectcommand. - The problem disappears when running VS Code with a clean profile (
code --user-data-dir /tmp/vscode-test --extensions-dir /tmp/vscode-test-extensions), confirming the issue lies within the user configuration state managed by the extension. - The following settings, which are intended to control this behavior, do not fix the issue, suggesting they are being ignored by the extension in this context:
"python.experiments.optOutFrom": ["pythonTerminalEnvVarActivation"]"python.terminal.activateEnvironment": false
Steps to reproduce:
- Install the latest stable versions of VS Code and the ms-python.python extension.
- Install uv and uv-virtualenvwrapper.
- Install python 3.8.20 (uv python install 3.8.20).
- Create a virtual enviroment (mkvirtualenv -p 3.8 my-env).
- Open VSCode. Open a new terminal (Terminal -> New Terminal).
- Switch to my-env (workon my-env). Open python repl.
Diagnostic data
Extension version: 2025.14.0
VS Code version: Code 1.104.2 (e3a5acfb517a443235981655413d566533107e92, 2025-09-24T11:21:37.073Z)
OS version: Linux x64 6.14.0-33-generic
Modes:
- Python version (& distribution if applicable, e.g. Anaconda): 3.12.3
- Type of virtual environment used (e.g. conda, venv, virtualenv, etc.): System
- Value of the
python.languageServersetting: Default
User Settings
Multiroot scenario, following user settings may not apply:
languageServer: "Pylance"
Installed Extensions
| Extension Name | Extension Id | Version |
|---|---|---|
| aws-toolkit-vscode | ama | 3.78.0 |
| copilot | Git | 1.372.0 |
| copilot-chat | Git | 0.31.4 |
| dark-autumn-frost | fim | 1.1.2 |
| debugpy | ms- | 2025.10.0 |
| docker | doc | 0.17.0 |
| EditorConfig | Edi | 0.17.4 |
| emr-tools | Ama | 0.7.0 |
| gc-excelviewer | Gra | 4.2.64 |
| github-vscode-theme | Git | 6.3.5 |
| intellicode-api-usage-examples | Vis | 0.2.9 |
| isort | ms- | 2025.0.0 |
| js-debug | ms- | 1.104.0 |
| js-debug-companion | ms- | 1.1.3 |
| jupyter | ms- | 2025.8.0 |
| jupyter-keymap | ms- | 1.1.2 |
| jupyter-renderers | ms- | 1.3.0 |
| mhtml2md | dev | 1.0.2 |
| nightowl-theme | Anc | 0.10.9 |
| python | ms- | 2025.14.0 |
| rainbow-bracket | tal | 1.0.2 |
| remote-containers | ms- | 0.427.0 |
| Theme-Monokai-Midnight | ger | 0.0.5 |
| unified-glow-vscode-theme | Ikr | 1.0.2 |
| vscode-containers | ms- | 2.2.0 |
| vscode-docker | ms- | 2.0.0 |
| vscode-edit-csv | jan | 0.11.7 |
| vscode-js-profile-table | ms- | 1.0.10 |
| vscode-jupyter-cell-tags | ms- | 0.1.9 |
| vscode-jupyter-slideshow | ms- | 0.1.6 |
| vscode-pylance | ms- | 2025.8.3 |
| vscode-python-envs | ms- | 1.8.0 |
| vscode-yaml | red | 1.19.0 |
| vscodeintellicode | Vis | 1.3.2 |
System Info
| Item | Value |
|---|---|
| CPUs | AMD Ryzen 7 7735HS with Radeon Graphics (16 x 3069) |
| GPU Status | 2d_canvas: enabled 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 trees_in_viz: disabled_off video_decode: enabled video_encode: disabled_software vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: disabled_off webnn: disabled_off |
| Load (avg) | 1, 1, 1 |
| Memory (System) | 30.12GB (21.91GB free) |
| Process Argv | --crash-reporter-id 5ce291ce-de6b-4aa9-b3a2-7660754e02d2 |
| Screen Reader | no |
| VM | 0% |
| DESKTOP_SESSION | ubuntu |
| XDG_CURRENT_DESKTOP | Unity |
| XDG_SESSION_DESKTOP | ubuntu |
| XDG_SESSION_TYPE | wayland |
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