Shift+enter to run Python: Run Selection/Line in Python Terminal not showing results immediately

[matthewgson]

Type: Bug

Behaviour

While browsing .py in editor, hitting shift+enter should execute the line in the terminal and show results immediately.

Steps to reproduce:

1. Create empty .py file
2. Write a code
3. Hit Shift + enter
4. Line of code and execution result should be visible on the terminal

It was actually ran, and visible only after interacting with the interpreter.

Untitled.mov

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: 2025.20.1
VS Code version: Code 1.107.1 (994fd12f8d3a5aa16f17d42c041e5809167e845a, 2025-12-17T14:15:14.850Z)
OS version: Darwin arm64 25.2.0
Modes:
Remote OS version: Linux x64 3.10.0-1160.2.1.el7.x86_64

• Python version (& distribution if applicable, e.g. Anaconda): 3.13.11
• 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
air-vscode	Pos	0.18.0
copilot-chat	Git	0.35.3
datawrangler	ms-	1.24.0
debugpy	ms-	2025.18.0
js-debug	ms-	1.105.0
js-debug-companion	ms-	1.1.3
jupyter	ms-	2025.9.1
jupyter-keymap	ms-	1.1.2
jupyter-renderers	ms-	1.3.0
latex-workshop	Jam	10.12.0
material-icon-theme	PKi	5.30.0
python	ms-	2025.20.1
python-ds-extension-pack	ms-	0.0.1
quarto	qua	1.127.0
r	REd	2.8.6
r-syntax	REd	0.1.3
rainbow-csv	mec	3.23.0
remote-explorer	ms-	0.5.0
remote-ssh	ms-	0.122.0
remote-ssh-edit	ms-	0.87.0
ruff	cha	2025.32.0
theme-dracula	dra	2.25.1
vscode-js-profile-table	ms-	1.0.10
vscode-jupyter-cell-tags	ms-	0.1.9
vscode-jupyter-slideshow	ms-	0.1.6
vscode-office	cwe	3.5.4
vscode-peacock	joh	4.2.2
vscode-pylance	ms-	2025.10.4
vscode-theme-onedark	aka	2.3.0
vsliveshare	ms-	1.0.5959

System Info

Item	Value
CPUs	Apple M2 Max (12 x 2400)
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: enabled_on trees_in_viz: disabled_off video_decode: enabled video_encode: enabled webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off
Load (avg)	2, 2, 2
Memory (System)	96.00GB (67.57GB free)
Process Argv	--crash-reporter-id a0bf4440-e73d-41aa-a6c5-22a4017f6e8c
Screen Reader	no
VM	0%

Item	Value
Remote	SSH: vscode-container
OS	Linux x64 3.10.0-1160.2.1.el7.x86_64
CPUs	AMD EPYC 7702 64-Core Processor (128 x 0)
Memory (System)	1007.41GB (885.50GB free)
VM	0%

A/B Experiments

vsliv368:30146709
binariesv615:30325510
nativeloc1:31344060
dwcopilot:31170013
dwoutputs:31242946
copilot_t_ci:31333650
e5gg6876:31282496
pythonrdcb7:31342333
6518g693:31436602
aj953862:31281341
6abeh943:31336334
envsactivate1:31353494
cloudbuttont:31379625
3efgi100_wstrepl:31403338
use-responses-api:31390855
defaultusage:31403421
ddidt:31399633
je187915:31401254
ec5jj548:31422691
terminalsuggestenabled:31431119
cmp-ext-treat:31426748
cp_cls_c_966_ss:31442353
c0683394:31419495
478ah919:31426797
ge8j1254_inline_auto_hint_haiku:31427726
a5gib710:31434435
38bie571_auto:31426784
request_with_suggest:31435827
rename_enabled:31436409
7a04d226_do_not_restore_last_panel_session:31438103
anthropic_thinking_t:31432745
h0hdh950:31428394
cp_cls_c_1081:31433293
copilot-nes-oct-trt:31432596
nes-jump-on-with-edit:31442062
nes-slash-models-on:31441832
nes-set-to-on:31441941
a43f0576c:31442824

[anthonykim1]

Thank you for filing issue @matthewgson

Does using environment extension help?
Try install https://marketplace.visualstudio.com/items?itemName=ms-python.vscode-python-envs

Can you update Python extension, Python environment extension to latest and see if you can still repro?
Also add "python.useEnvironmentsExtension": true, to your settings.json.

[matthewgson]

Thank you. Enabling the environment extension resolved the problem in my local vscode.

However, I noticed that when I enable it in the remote ssh, it rather generates the problem above, somehow strangely.

[aleimba]

Dear @anthonykim1 ,
thank you for taking care of this issue.
I have the same problem. Considering all the messages on GitHub/Stackoverflow etc. this seems to be a common and major problem.
Since yesterday neither Shift+Enter nor command pallette 'Python: Run Selection/Line in Python Terminal' works for me in a Python script.

I'm running:

Version: 1.109.5
Commit: 072586267e68ece9a47aa43f8c108e0dcbf44622
Date: 2026-02-19T19:43:32.382Z
Electron: 39.3.0
ElectronBuildId: 13313481
Chromium: 142.0.7444.265
Node.js: 22.21.1
V8: 14.2.231.22-electron.0
OS: Linux x64 6.18.7-76061807-generic

Following extensions installed and running:

alefragnani.bookmarks-14.0.0
charliermarsh.ruff-2026.36.0-linux-x64
extensions.json
george-alisson.html-preview-vscode-0.2.5
github.copilot-chat-0.37.8
gruntfuggly.todo-tree-0.0.226
mads-hartmann.bash-ide-vscode-1.43.0
mechatroner.rainbow-csv-3.24.1
ms-python.debugpy-2025.18.0-linux-x64
ms-python.python-2026.2.0-linux-x64
ms-python.vscode-pylance-2026.1.1
ms-python.vscode-python-envs-1.20.1-linux-x64
ms-vscode.remote-explorer-0.5.0
ms-vscode-remote.remote-ssh-0.122.0
ms-vscode-remote.remote-ssh-edit-0.87.0
oderwat.indent-rainbow-8.3.1
phoihos.csv-to-md-table-0.3.1
timonwong.shellcheck-0.38.8-linux-x64
yzhang.markdown-all-in-one-3.6.3

When I looked into the issue I saw that 'ms-python.vscode-python-envs-1.20.1-linux-x64' was updated yesterday, I guess this must be the problem ...
However, changing to the pre-release version did not fix the issue. Also including "python.useEnvironmentsExtension": true, in my users setting JSON did not change anything...
I currently use a workaround by using 'Terminal: Run Selected Text in Active Terminal' with a keyboard shortcut. But it doesn't have smartsend for code blocks etc.

Do you have a suggestion how to fix this?
Thanks a lot!

[anthonykim1]

@matthewgson @aleimba When environment extension is enabled, do you see the proper interpreter selected in the environment extension panel?

Also please be on latest PRE-release of the environment extension as there were bunch of fixes there.
If that doesnt work please set the log level to trace and paste the output from Python and Python environments channel !

Thank you all