_persist_run() — langchain Function Reference

Architecture documentation for the _persist_run() function in langchain.py from the langchain codebase.

Function python Observability Tracers

Entity Profile

Observability→ Tracers→ _persist_run() — langchain Function Reference

Dependency Diagram

graph TD
  feeaafcd_6a55_9b52_596d_b0e6235026f1["_persist_run()"]
  178590bb_85ff_b79e_979a_46e5c3c5389f["LangChainTracer"]
  feeaafcd_6a55_9b52_596d_b0e6235026f1 -->|defined in| 178590bb_85ff_b79e_979a_46e5c3c5389f
  style feeaafcd_6a55_9b52_596d_b0e6235026f1 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/tracers/langchain.py lines 198–206

    def _persist_run(self, run: Run) -> None:
        # We want to free up more memory by avoiding keeping a reference to the
        # whole nested run tree.
        run_data = run_to_dict(run, exclude={"child_runs", "inputs", "outputs"})
        self.latest_run = run_construct(
            **run_data,
            inputs=run.inputs,
            outputs=run.outputs,
        )