.env file is not reloaded/interpolated

Applies To

• Notebooks (.ipynb files)
• Interactive Window and/or Cell Scripts (.py files with #%% markers)

What happened?

I’ve been trying to add some additional search paths to PYTHONPATH, so I created an env file

PYTHONPATH='lib:crawler:api:${env:PYTHONPATH}'

There are a few problems:

1. The variable was never interpolated, e.g. the output of sys.path is:

['/Users/janrito/path/to/project',
 '/Users/janrito/path/to/project/notebooks',
 '/Users/janrito/path/to/project/notebooks/lib',
 '/Users/janrito/path/to/project/notebooks/crawler',
 '/Users/janrito/path/to/project/notebooks/api',
 '/Users/janrito/path/to/project/notebooks/${env',
 '/Users/janrito/path/to/project/notebooks/PYTHONPATH}',
 '/opt/homebrew/Caskroom/miniforge/base/envs/project-env/lib/python39.zip',
 '/opt/homebrew/Caskroom/miniforge/base/envs/project-env/lib/python3.9',
...
]

1. I cannot reload the environment variables. I’ve tried restarting the kernel, the language server, vscode itself - with no success. I deleted the .env file sys.path remains the same

2. The path relative root is wrong:

In .vscode/settings.json I have set:

"jupyter.notebookFileRoot": "${workspaceFolder}",

The additional search paths should have been added relative to the project root, not relative to the notebooks directory.

VS Code Version

Version: 1.66.0-insider

Jupyter Extension Version

v2022.3.1000851004

Jupyter logs

No response

Coding Language and Runtime Version

Python v3.9.10 from miniconda

Language Extension Version (if applicable)

v2022.3.10831003

Anaconda Version (if applicable)

mamba 0.22.1 conda 4.12.0

Running Jupyter locally or remotely?

Local

[DonJayamanne]

to be clear, .env files area supported, but not replacing tokens such as ${env:PYTHONPATH} with something else. Jupiter extension is not specific to just python, apples to R, julia, etc, hence not sure about the tokens used in env files, i think this is specific to python.

once again, we’ll focus this within the team and we’ll update this issue accordingly

[subercui]

Any solution to this? I met the same issue/bug. It never updates the env variable even after restarting everything. Vscode 1.66.2, vscode-jupyter v2022.3.1000901801