langchain_core.tracers.context.tracing_v2_enabled¶
- langchain_core.tracers.context.tracing_v2_enabled(project_name: Optional[str] = None, *, example_id: Optional[Union[str, UUID]] = None, tags: Optional[List[str]] = None, client: Optional[LangSmithClient] = None) Generator[LangChainTracer, None, None][source]¶
Instruct LangChain to log all runs in context to LangSmith.
- Parameters
project_name (str, optional) – The name of the project. Defaults to “default”.
example_id (str or UUID, optional) – The ID of the example. Defaults to None.
tags (List[str], optional) – The tags to add to the run. Defaults to None.
client (LangSmithClient, optional) – The client of the langsmith. Defaults to None.
- Returns
None
- Return type
Generator[LangChainTracer, None, None]
Example
>>> with tracing_v2_enabled(): ... # LangChain code will automatically be traced
You can use this to fetch the LangSmith run URL:
>>> with tracing_v2_enabled() as cb: ... chain.invoke("foo") ... run_url = cb.get_run_url()