Why can't the env file be read during RunPythonFile and can only be read during debugging?

[xxc-zsz]

Use the following sample code to load the .env file without loading the env file with additionally installed third-party modules.

import os
print(os.getenv("name"))

File structure

py03
├─ .env
├─ .vscode
│  ├─ launch.json
│  └─ settings.json
└─ demo02.py

.env file

name=VSCODE

The content of settings.json file:

{
    "python.envFile": "${workspaceFolder}/.env"
}

Results using Run Python FIle

Add envFile configuration in launch.json

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Python: Current File",
            "type": "python",
            "request": "launch",
            "program": "${file}",
            "console": "integratedTerminal",
            "justMyCode": true,
            "envFile": "${workspaceFolder}/.env"
        }
    ]
}

Use the triangle button to debug the script in the Run and Debug panel, or use Ctrl+F5 can get results

Why does the same code work under debug, but run doesn't work?

[karrtikr]

Closing as dup of #944

[karrtikr]

Btw this issue should be solved with #11039, the fix should already be out if you want to try it:

• Use pre-release:
  
• Add "python.experiments.optInto": ["pythonTerminalEnvVarActivation"] to User settings and reload window.
• Note you won't see the prompt (<env_name>) in fish but the env should be activated.
• Make sure to not be using a multiroot workspace