langchain

c4e591a5 - OpenAI function calling docstring and notebook imports (#10663)

OpenAI function calling docstring and notebook imports (#10663) This PR is a documentation fix. Description: * fixes imports in the code samples in the docstrings of `create_openai_fn_chain` and `create_structured_output_chain` * fixes imports in `docs/extras/modules/chains/how_to/openai_functions.ipynb` * removes unused imports from the notebook Issues: * the docstrings use `from pydantic_v1 import BaseModel, Field` which this PR changes to `from langchain.pydantic_v1 import BaseModel, Field` * importing `pydantic` instead of `langchain.pydantic_v1` leads to errors later in the notebook