PYTHON_BASIC_REPL in integrated terminal interacts poorl with Python 3.14 REPL #25537
Description
Type: Bug
Behaviour
PYTHON_BASIC_REPL=1 interacts poorly with the python 3.14 repl. Unsetting that variable surfaces a different issue which requires unsetting PYTHONSTARTUP as well.
Steps to reproduce:
uv run --python 3.14 python
Diagnostic data
Output of uv run --python 3.14 python in the Terminal panel
Python 3.14.0rc2 (main, Aug 28 2025, 17:07:51) [Clang 20.1.4 ] on linux Type "help", "copyright", "credits" or "license" for more information. Ctrl click to launch VS Code Native REPL ]633;C]633;E;None]633;D;0]633;A>>> ]633;B
Output of PYTHON_BASIC_REPL= uv run --python 3.14 python in the Terminal panel
Python 3.14.0rc2 (main, Aug 28 2025, 17:07:51) [Clang 20.1.4 ] on linux Type "help", "copyright", "credits" or "license" for more information. Ctrl click to launch VS Code Native REPL >>>(note that the even though the cursor is reported on "Col 2", it appears under the "r" of "for more information")
Extension version: 2025.16.0
VS Code version: Code 1.105.0 (03c265b1adee71ac88f833e065f7bb956b60550a, 2025-10-08T14:09:35.891Z)
OS version: Linux x64 6.14.0-33-generic snap
Modes:
- Python version (& distribution if applicable, e.g. Anaconda): 3.12.3
- Type of virtual environment used (e.g. conda, venv, virtualenv, etc.): Venv
- Value of the
python.languageServersetting: Default
User Settings
Multiroot scenario, following user settings may not apply:
languageServer: "Pylance"
terminal
• activateEnvironment: false
Installed Extensions
| Extension Name | Extension Id | Version |
|---|---|---|
| copilot | Git | 1.372.0 |
| copilot-chat | Git | 0.32.3 |
| debugpy | ms- | 2025.14.1 |
| js-debug | ms- | 1.105.0 |
| js-debug-companion | ms- | 1.1.3 |
| python | ms- | 2025.16.0 |
| ruff | cha | 2025.28.0 |
| vscode-github-actions | git | 0.28.0 |
| vscode-js-profile-table | ms- | 1.0.10 |
| vscode-pylance | ms- | 2025.8.3 |
| vscode-python-envs | ms- | 1.10.0 |
| vscode-zig | zig | 0.6.14 |
System Info
| Item | Value |
|---|---|
| CPUs | Intel(R) Core(TM) i3-N305 (8 x 2977) |
| GPU Status | 2d_canvas: unavailable_software direct_rendering_display_compositor: disabled_off_ok gpu_compositing: disabled_software multiple_raster_threads: enabled_on opengl: disabled_off rasterization: disabled_software raw_draw: disabled_off_ok skia_graphite: disabled_off trees_in_viz: disabled_off video_decode: disabled_software video_encode: disabled_software vulkan: disabled_off webgl: unavailable_software webgl2: unavailable_software webgpu: disabled_off webnn: unavailable_software |
| Load (avg) | 1, 1, 2 |
| Memory (System) | 31.09GB (18.37GB free) |
| Process Argv | --no-sandbox --force-user-env --crash-reporter-id 802f0f07-1840-4364-a856-ee373c0d893f |
| Screen Reader | no |
| VM | 0% |
| DESKTOP_SESSION | ubuntu |
| XDG_CURRENT_DESKTOP | Unity |
| XDG_SESSION_DESKTOP | ubuntu |
| XDG_SESSION_TYPE | wayland |
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