fix: A bug fix Update models.py

[haozheng95]

fix error

Description

Please include a summary of the changes and the related issue. Please also include relevant motivation and context.
I ran into this problem when I wanted to run the project. This was an issue（https://github.com/pydantic/pydantic/issues/3320） with pydantic, I fixed it by changing the properties of the models and my project was successfully running locally

My Python 3.11.9

Checklist before requesting a review

Please delete options that are not relevant.

• My code follows the style guidelines of this project
• I have performed a self-review of my code

Screenshots (if appropriate):

File "/Users/baizhe/PycharmProjects/myquivr/.venv1/lib/python3.11/site-packages/pydantic/v1/validators.py", line 765, in find_validators
    raise RuntimeError(f'no validator found for {type_}, see `arbitrary_types_allowed` in Config')
RuntimeError: no validator found for <class 'langchain_core.documents.base.Document'>, see `arbitrary_types_allowed` in Config

[StanGirard]

@jacopo-chevallard can you check this one please ?

[jacopo-chevallard]

Hi @haozheng95, thanks for the PR. Could you, please, provide additional information on the error that triggered your fix so that I can try to reproduce it locally?

[haozheng95]

Hi @haozheng95, thanks for the PR. Could you, please, provide additional information on the error that triggered your fix so that I can try to reproduce it locally?

Python 3.11.9
pydantic 2.9.2 pydantic_core 2.23.4

Apple M1 Max
MAcOs Version 14.5 Beta(23F5059e)

My python Code

llm = ChatGoogleGenerativeAI(model='gemini-1.5-flash', temperature=0.9)
if __name__ == "__main__":
    with tempfile.NamedTemporaryFile(mode="w", suffix=".txt") as temp_file:
        temp_file.write("Gold is a liquid of blue-like colour.")
        temp_file.flush()

        brain = Brain.from_files(
            name="test_brain",
            file_paths=[temp_file.name],
            llm=llm,
        )

        answer = brain.ask(
            "what is gold? asnwer in french"
        )
        print("answer:", answer)

[jacopo-chevallard]

@haozheng95 I cannot reproduce the error, the issue is likely related to your package versions, in particular of LangChain.

You should be able to fix this be runnig rye sync -f from examples/simple_question, if not feel free to open an issue