Mason Daugherty d3eb2296e7 fix(core): avoid dict shadowing in language models (#38480) ...

Fixes #37835

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When Pydantic collects fields for a `BaseLanguageModel` subclass that
defines a `dict()` method, inherited annotations can resolve `dict`
against the subclass namespace instead of the builtin. With Pydantic
2.14.0a1 this caused `BaseLanguageModel.metadata: dict[str, Any] | None`
to fail during rebuild/import with `'function' object is not
subscriptable`.

This qualifies the inherited `metadata` field annotation as
`builtins.dict[...]`, matching the existing pattern in chat models, and
documents why the runtime import cannot move behind `TYPE_CHECKING`. It
also adds a regression test that rebuilds a `BaseLanguageModel` subclass
with a `dict()` method so core catches this failure before partner
packages hit it at import time.

Related to #37924, which hardens `_create_subset_model_v2`; this PR
fixes the `BaseLanguageModel` class-construction failure directly.

2026-06-26 03:14:47 -04:00

..

benchmarks

perf(core): memoize BaseTool.tool_call_schema subset model and cache model_json_schema (#38073)

2026-06-17 17:17:14 -04:00

integration_tests

core: Add ruff rules for PIE (#26939)

2024-09-27 12:08:35 -04:00

unit_tests

fix(core): avoid dict shadowing in language models (#38480)

2026-06-26 03:14:47 -04:00

__init__.py

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