The most common fix is telling VS Code exactly which Python executable to use. VS Code often defaults to a global system Python rather than your Poetry environment. Stack Overflow Open the Command Palette Ctrl+Shift+P (Windows/Linux) or Cmd+Shift+P Search for Interpreter : Type "Python: Select Interpreter" and select it. Find your Poetry Env

To fix this, you must explicitly tell VS Code which Python executable to use, or change how Poetry handles virtual environments.

Here are the most effective solutions to get Poetry and Pylance working in harmony.

"python.analysis.extraPaths": [ "/path/to/poetry/venv/lib/python3.12/site-packages" ]

If you've tried the solutions above and are still battling red squiggles, try these more advanced troubleshooting steps:

) directly inside your project folder. VS Code automatically detects these local folders. Stack Overflow Global configuration poetry config virtualenvs.in-project true Local (per-project) configuration poetry config virtualenvs.in-project true --local Stack Overflow After setting this, delete your existing environment ( poetry env remove poetry install to recreate it within your project root. Stack Overflow Alternative: Manually Adding Extra Paths

By default, Poetry creates virtual environments in a centralized, hidden global cache directory (e.g., ~/.cache/pypoetry/virtualenvs on macOS/Linux or %USERPROFILE%\AppData\Local\pypoetry\Cache\virtualenvs on Windows).

Pylance is built on Pyright. You can configure Pyright’s venvPath and venv directly.

Create or open the .vscode/settings.json file in your project root and add the python.analysis.extraPaths or python.venvPath configurations:

To make VS Code automatically detect the environment, it is highly recommended to configure Poetry to create virtual environments within your project folder, rather than a global cache directory. Run the following command in your terminal: poetry config virtualenvs.in-project true Use code with caution.

Open the Command Palette using Ctrl+Shift+P (Windows/Linux) or Cmd+Shift+P (macOS). Type and select . If your Poetry environment appears in the list, select it.