GenerateContentResponse.parsed type should support list[pydantic.BaseModel]

[Vandivier]

"response_schema": list[Recipe] as a value in Structured output configuration totally works functionally, but mypy type checking breaks in the response because parsed: Optional[Union[pydantic.BaseModel, dict[Any, Any], Enum]] does not allow a list type.

this is true as of "google-genai>=1.16.1"

[Adewale-1]

Hi @Vandivier ,

I’m working on a fix for this issue and will submit a PR soon.

[Adewale-1]

@hkt74 I've submitted a PR (#906 ) that fixes this issue by adding support for list[pydantic.BaseModel] in the GenerateContentResponse.parsed type annotation.

The PR adds comprehensive tests that verify the fix works correctly with mypy type checking and runtime functionality.

[kiransair]

Hi @Vandivier , Could you please confirm if my understanding about the issue is correct or not.If you are using parsed: Optional[Union[pydantic.BaseModel, dict[Any, Any], Enum]] this as a type hint in basemodel and passing this base model to the response_schema breaks the code. If my understanding is not correct could you please elaborate more on this and if possible please provide the standalone code how you are trying. Thank You.

[github-actions]

This issue has been marked as stale because it has been open for 7 days with no activity. It will be closed in 2 days if no further activity occurs.

[github-actions]

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