Nested models & exclude fields

[L4rryFisherman]

Description: Add functionalities to the parser and output formatter:

• Recursively retrieves fields from any nested models
• Takes an optional list of fields of the (nested) model(s) to be excluded.
• If any required fields are specified as excluded, the class will throw a warning and create a new Pydantic model is created for output instructions, and to parse against.

Dependencies:

• warnings

Tag maintainer: @baskaryan

Please let me know if I should satisfy any additional requirements! :)

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1 Ignored Deployment

Name	Status	Preview	Comments	Updated (UTC)
langchain	⬜️ Ignored (Inspect)			Jul 9, 2023 11:57am

[L4rryFisherman]

Added a commit to address lint errors:

• Explicitly prevent in on optional lists
• Provide type for json_object

[baskaryan]

not sure i fully understand the use case — could you provide an example of how new functionality would be used?

would also be great to add some unit tests, imagine those would also clarify

[leo-gan]

@L4rryFisherman Hi , could you, please, resolve the merging issues and address the last comments (if needed)? After that, ping me and I push this PR for the review. Thanks!

[efriis]

Closing because the PR wouldn't line up with the current directory structure of the library (would need to be in /libs/langchain/langchain instead of /langchain). Feel free to reopen against the current head if it's still relevant!