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810def4fc5
New `langchain_tests.utils.stream_lifecycle.assert_valid_event_stream` helper enforces the protocol contract on any event stream: - single message-start / message-finish envelope - blocks do not interleave (each block finishes before the next starts) - sequential uint wire indices from 0 - accumulated deltas match the finish payload for deltaable types Applied at three levels: - core/test_compat_bridge: provider-style emission patterns exercised directly through chunks_to_events / message_to_events (openai chat completions int indices, openai responses/v1 string identifiers, anthropic-style per-chunk int indices, inline image, invalid tool call, empty stream) - openai partner: validator applied to stream_v2 against the existing responses-api mock and to a new chat-completions stream_v2 test - anthropic partner: new mock stream of RawMessageStartEvent + RawContentBlock* events threaded through _stream via `_create` patch; covers thinking + text + tool_use lifecycle with tool-use stop_reason Enabling thinking on the anthropic test flips coerce_content_to_string off so every block carries a proper integer index — the structured path the bridge actually exercises. Default-mode (no tools / thinking / docs) coerces text to a plain string and strips per-chunk indices; the bridge handles that branch by collapsing to positional-0 and it is a known separate code path, intentionally not covered here.
langchain-openai
Looking for the JS/TS version? Check out LangChain.js.
Quick Install
pip install langchain-openai
🤔 What is this?
This package contains the LangChain integrations for OpenAI through their openai SDK.
📖 Documentation
For full documentation, see the API reference. For conceptual guides, tutorials, and examples on using these classes, see the LangChain Docs.
📕 Releases & Versioning
See our Releases and Versioning policies.
💁 Contributing
As an open-source project in a rapidly developing field, we are extremely open to contributions, whether it be in the form of a new feature, improved infrastructure, or better documentation.
For detailed information on how to contribute, see the Contributing Guide.