ty 0.0.3

on Python PyPI

Release Notes

Released on 2025-12-17.

LSP server

• Improve rendering of signatures in hovers (#22007)

Core type checking

• Apply narrowing to len calls based on argument size (#22026)
• Don't add identical lower/upper bounds multiple times when inferring specializations (#22030)
• Improve unsupported-base and invalid-super-argument diagnostics to avoid extremely long lines when encountering verbose types (#22022)
• Improve disambiguation of types in many cases (#22019)
• Respect deferred values in keyword arguments etc. for .pyi files (#22029)
• Handle field specifier functions that accept **kwargs and recognize metaclass-based transformers as instances of DataclassInstance (#22018)

Contributors

• @charliermarsh
• @sharkdp
• @Gankra
• @zanieb
• @AlexWaygood
• @dcreager

Install ty 0.0.3

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/astral-sh/ty/releases/download/0.0.3/ty-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://github.com/astral-sh/ty/releases/download/0.0.3/ty-installer.ps1 | iex"

Download ty 0.0.3