langchain

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OysterMax eb25d7472d core: support Union type args in strict mode of OpenAI function calling / structured output (#30971 )

**Issue:**[
#309070](https://github.com/langchain-ai/langchain/issues/30970)

**Cause**
Arg type in python code
```
arg: Union[SubSchema1, SubSchema2]
``` 
is translated to `anyOf` in **json schema**
```
"anyOf" : [{sub schema 1 ...}, {sub schema 1 ...}]
```
The value of anyOf is a list sub schemas. 
The bug is caused since the sub schemas inside `anyOf` list is not taken
care of.
The location where the issue happens is `convert_to_openai_function`
function -> `_recursive_set_additional_properties_false` function, that
recursively adds `"additionalProperties": false` to json schema which is
[required by OpenAI's strict function
calling](https://platform.openai.com/docs/guides/structured-outputs?api-mode=responses#additionalproperties-false-must-always-be-set-in-objects)

**Solution:**
This PR fixes this issue by iterating each sub schema inside `anyOf`
list.
A unit test is added.

**Twitter handle:** shengboma 


If no one reviews your PR within a few days, please @-mention one of
baskaryan, eyurtsev, ccurme, vbarda, hwchase17.

---------

Co-authored-by: ccurme <chester.curme@gmail.com>

2025-05-16 16:20:32 -04:00

__init__.py

…

test_aiter.py

core: Add ruff rules PT (pytest) (#29381 )

2025-04-01 13:31:07 -04:00

test_env.py

core: Add ruff rules PT (pytest) (#29381 )

2025-04-01 13:31:07 -04:00

test_function_calling.py

core: support Union type args in strict mode of OpenAI function calling / structured output (#30971 )

2025-05-16 16:20:32 -04:00