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Update the "gradual guarantee" section in the docs

documentationImprovements or additions to documentationImprovements or additions to documentation

Status: Open.

#3266 In astral-sh/ty;

· sharkdp opened on Apr 13, 2026

False positive invalid-return-type with explicitly subscripted generic constructor

bugSomething isn't workingSomething isn't working

genericsBugs or features relating to ty's generics implementationBugs or features relating to ty's generics implementation

Status: Open.

#3265 In astral-sh/ty;

· kang8 opened on Apr 13, 2026

Metaclass __call__ breaks annotation hover of __init__ in class using the Metadata

serverRelated to the LSP serverRelated to the LSP server

Status: Open.

#3264 In astral-sh/ty;

· OlavMSG opened on Apr 13, 2026

jinja2.Environment().filters[name] have unexpected type instead of Any

questionAsking for support or clarificationAsking for support or clarification

type-inference

Status: Open.

#3263 In astral-sh/ty;

· Tatsh opened on Apr 13, 2026

[unresolved-import]: torch, einops in VS Code, but not CLI, unless --python ...

importsModule resolution, site-packages discovery, import-related diagnosticsModule resolution, site-packages discovery, import-related diagnostics

questionAsking for support or clarificationAsking for support or clarification

serverRelated to the LSP serverRelated to the LSP server

Status: Open.

#3260 In astral-sh/ty;

· hunterhogan opened on Apr 12, 2026

Assigning Any & Top[list[Unknown]] to Iterable[T] wrongly solves T to object

genericsBugs or features relating to ty's generics implementationBugs or features relating to ty's generics implementation

Status: Open.

#3259 In astral-sh/ty;

· carljm opened on Apr 12, 2026

·  

Pre-stable 1

Correct way for hinting default values for mutable function arguments

bidirectional inferenceInference of types that takes into account the context of a declared type or expected typeInference of types that takes into account the context of a declared type or expected type

Status: Open.

#3258 In astral-sh/ty;

· sebastianw opened on Apr 12, 2026

·  

Stable

TypeVar defaults used instead of inferring from Self when passed to a generic function

bugSomething isn't workingSomething isn't working

genericsBugs or features relating to ty's generics implementationBugs or features relating to ty's generics implementation

Status: Open.

#3257 In astral-sh/ty;

· dsfaccini opened on Apr 12, 2026

·  

Stable

@cached_property rejected on method with enclosing-class TypeVar in return type

Status: Open.

#3256 In astral-sh/ty;

· dsfaccini opened on Apr 12, 2026

·  

Stable

Emit a diagnostic when widening a singleton with | Unknown

Status: Open.

#3254 In astral-sh/ty;

· carljm opened on Apr 10, 2026

Consider inferring types for un-annotated function parameters with defaults

needs-decisionAwaiting a decision from a maintainerAwaiting a decision from a maintainer

Status: Open.

#3251 In astral-sh/ty;

· carljm opened on Apr 10, 2026

Not-awaitable diagnostic context skips some steps

diagnosticsRelated to reporting of diagnostics.Related to reporting of diagnostics.

help wantedContributions especially welcomeContributions especially welcome

Status: Open.

#3250 In astral-sh/ty;

· carljm opened on Apr 10, 2026