astral-sh/ty 0.0.1-alpha.9

on GitHub

Release Notes

Typing semantics and features

• Add generic inference for dataclasses (#18443)
• Add support for global __debug__ constant (#18540)
• Argument type expansion for overload call evaluation (#18382)
• Exclude members starting with _abc_ from a protocol interface (#18467)
• Infer list[T] for starred target in unpacking (#18401)
• Infer list[T] when unpacking non-tuple type (#18438)
• Support type annotation for legacy typing aliases for generic classes (#18404)
• Allow using dataclasses.dataclass as a function (#18440)
• Type narrowing for attribute/subscript assignments (#18041)

Diagnostics

• Add hints to invalid-type-form for common mistakes (#18543)
• Add subdiagnostic suggestion to unresolved-reference diagnostic when variable exists on self (#18444)
• Track the origin of the environment.python setting for better error messages (#18483)

CLI

• Fix --python argument for Windows, and improve error messages for bad --python arguments (#18457)

Bug fixes

• Meta-type of type variables should be type[..] (#18439)
• Only consider a type T a subtype of a protocol P if all of P's members are fully bound on T (#18466)
• Fix false positives for legacy ParamSpecs inside Callable type expressions (#18426)
• Fix panic when pulling types for UnaryOp expressions inside Literal slices (#18536)
• Fix panic when trying to pull types for attribute expressions inside Literal type expressions (#18535)
• Fix panic when trying to pull types for subscript expressions inside Callable type expressions (#18534)
• Treat lambda functions as instances of types.FunctionType (#18431)
• Implement disjointness between Callable and SpecialForm (#18503)

Server

• Fix stale diagnostics in documents on Windows (#18544)
• Add support for object.<CURSOR> completions (#18468)
• Only provide declarations and bindings as completions (#18456)

Documentation

• Add CONDA_PREFIX to --python documentation (#18574)
• Update list of referenced environment variables (#612)
• Document how the default value for python-version is determined (#18549)
• Document the "all" option for python-platform (#18548)

Contributors

• @AlexWaygood
• @charliermarsh
• @mtshiba
• @benbaror
• @sharkdp
• @carljm
• @MichaReiser
• @lipefree
• @BurntSushi
• @DetachHead
• @MatthewMckee4
• @suneettipirneni
• @abhijeetbodas2001
• @ibraheemdev
• @dhruvmanila

Install ty 0.0.1-alpha.9

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/astral-sh/ty/releases/download/0.0.1-alpha.9/ty-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://github.com/astral-sh/ty/releases/download/0.0.1-alpha.9/ty-installer.ps1 | iex"

Download ty 0.0.1-alpha.9