Run poetry config virtualenvs.in-project true before poetry install . This puts the .venv folder in your project root, which VS Code detects automatically. Clean project structure and easy detection.
The fix was absurdly simple, which made it infuriating.
On macOS/Linux, it is usually: ~/.cache/pypoetry/virtualenvs pylance missing imports poetry hot
If you applied the fixes above and Pylance still shows missing imports, try these troubleshooting steps:
Pylance relies on the selected Python interpreter and its associated sys.path . However, Poetry uses a that may install packages in isolated, non-standard locations (e.g., Poetry’s cache, or virtualenvs outside the project root). While VS Code can detect the Poetry virtual environment, Pylance doesn’t fully respect the site-packages path derived from poetry run python -c "import site; print(site.getsitepackages())" in all scenarios — especially for editable installs or in monorepos. Run poetry config virtualenvs
Alex called it the "Blue Snake of Shame."
If you are importing your own local modules (e.g., from src import mymodule ) and Pylance marks them as missing even after selecting the correct interpreter, you may need to explicitly tell Pylance where to look. The fix was absurdly simple, which made it infuriating
Pylance restarts. The import errors vanish. Autocomplete works. This is the "hot" fix that solves 90% of cases.
Pylance, on the other hand, only searches standard system Python paths and your immediate workspace directory. Because Pylance does not automatically scan Poetry's global cache, it assumes your imported packages do not exist.