Ty: A fast Python type checker and language server

Re:Ty: A fast Python type checker and language server by briandw on Wednesday May 07, 2025 @05:17PM (#43920645)

Looks good but it has the same issues that i have with mypy. Packages that don't include the type hints blow-up my process. In mypy i've come to terms with strategically ignoring packages or finding a package of type hints. Mypy is runs cleanly on my project but I get >800 errors with TY, mostly things like:

lint:unresolved-import: Cannot resolve imported module `pydantic` --> vartia/usr_id.py:4:6 | 2 | from typing import Optional, Any 3 | from enum import Enum 4 | from pydantic import BaseModel, ConfigDict

looking forward to the release version.

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Re:Ty: A fast Python type checker and language server by _carljm on Wednesday May 07, 2025 @05:35PM (#43920802)

The current version can handle importing pydantic without error just fine, but it probably can't find your virtualenv, so it doesn't know what third-party dependencies you have installed. Ty will discover your venv if it is in `.venv` in the project directory; otherwise you can help it out with the `--python` CLI flag.

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Re:Ty: A fast Python type checker and language server by alexwaygood on Wednesday May 07, 2025 @05:46PM (#43920878)

We'll also discover your venv if you: - Activate it manually (`source .venv/bin/activate`, etc.) - Set the `VIRTUAL_ENV` environment variable - Or use a command such as `uv run` or the equivalent from pdm/poetry/hatch to run ty (these project managers usually implicitly set the `VIRTUAL_ENV` variable to point to the project's virtual environment before executing any commands)

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