Removing --live-stream from conda run causes EOF for input()

[rhewy]

Type: Bug

Steps to reproduce

Install conda

Create an env

Install and run the latest VSCode

Version info below

Version: 1.104.0 (user setup)
Commit: f220831ea2d946c0dcb0f3eaa480eb435a2c1260
Date: 2025-09-10T06:46:18.035Z
Electron: 37.3.1
ElectronBuildId: 12342881
Chromium: 138.0.7204.235
Node.js: 22.18.0
V8: 13.8.258.31-electron.0
OS: Windows_NT x64 10.0.26100

Create a folder

Add a main.py

Use the Python environment extension to activate the conda env for the project

Add the code below to main.py

print('test')
junk = input('Enter something: ')
print(f'You entered: {junk} ')

Right click on the file an choose: Run python file in terminal

Get the following output and error:

test
Enter something: 
Traceback (most recent call last):
  File "e:\_lab_dev\gist\7010\test\main.py", line 2, in <module>
    junk = input('Enter something: ')
EOFError: EOF when reading a line

Add --live-stream option to conda run and the error goes away

& conda run --live-stream --name gist7010 python e:/_lab_dev/gist/7010/test/main.py
test
Enter something: 10
You entered: 10 

Extension version: 1.6.0
VS Code version: Code 1.104.0 (f220831ea2d946c0dcb0f3eaa480eb435a2c1260, 2025-09-10T06:46:18.035Z)
OS version: Windows_NT x64 10.0.26100
Modes:

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-1065G7 CPU @ 1.30GHz (8 x 1498)
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: enabled vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off
Load (avg)	undefined
Memory (System)	15.79GB (5.04GB free)
Process Argv	--crash-reporter-id 82cf0f5c-bc12-4077-a41c-08830b75b0c1
Screen Reader	no
VM	0%

A/B Experiments

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pythonrdcb7:31342333
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envsactivate1:31353494
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cloudbuttont:31379625
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3efgi100_wstrepl:31382709
trigger-command-fix:31379601
auto_model_enabled:31385282

[eleanorjboyd]

Hi! If you run the same command from your terminal does it work or does it require the argument to work correctly in your terminal as well?

[rhewy]

If I right click on the file in vscode

(gist7132) PS E:\course_tools\python\test> & conda run --name gist7132 python e:/course_tools/python/test/main.py
Enter your name: 
Traceback (most recent call last):
  File "e:\course_tools\python\test\main.py", line 1, in <module>
    Name = input('Enter your name: ')
EOFError: EOF when reading a line

If I open a terminal and enter the following line I get:

conda run --name gist7132 python .\main.py
Enter your name: 
Traceback (most recent call last):
  File "E:\course_tools\python\test\main.py", line 1, in <module>
    Name = input('Enter your name: ')
EOFError: EOF when reading a line

If I add the --live-stream switch I get:

(gist7132) PS E:\course_tools\python\test> conda run --live-stream --name gist7132 python .\main.py
Enter your name: Rob
Hello, Rob!
(gist7132) PS E:\course_tools\python\test> 

I was researching the issue and found this previous github issue:

conda/conda#11209

I think we discovered why --live-stream was being used

[rhewy]

This is the code in the file:

Name = input('Enter your name: ')
print('Hello, ' + Name + '!')

[Konsar]

I just encountered the exact same issue and I am quite thankful I got to see this here...

Hi! If you run the same command from your terminal does it work or does it require the argument to work correctly in your terminal as well?

Yes, yes it does. To clarify where I tested it:
When I run it in VSCode, I get the EOFError for the input().
When I run it manually in the VSCode Terminal, I get the same EOFError.
When I run it manually in the Anaconda Terminal, I get the same EOFError.
And as expected, when I run it for example in Windows Powershell, I get the same EOFError.

And to elaborate a bit more for those who encounter this as well:
Both the --live-stream and the --no-capture-output arguments solve this issue.
i.e:
conda run -n env --live-stream python main.py
conda run -n env --no-capture-output python main.py

[Konsar]

Additional update:
I tried to rollback the extensions that got a recent update (like Python Environments)... did not fix my issue.

Sometimes the stupidest idea is the best solution. Uninstalled VSCode. Deleted the still existing extensions (%Userprofile%/.vscode). Installed the previous VSCode version (1.103.2). Re-installed the necessary extensions. Everything works as expected now.

For me this fixed every issue I had. I can however not say if this is an issue due to the recent VSCode Update; or an issue due to a VSCode extension; or if it just works and fixes things for me.

[rhewy]

For me, the issue appeared after an update of VSCode to version 1.104.0

Still affects version 1.104.1