add() — langchain Function Reference

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

Function python Observability Tracers

Entity Profile

Observability→ Tracers→ __add__() — langchain Function Reference

Dependency Diagram

graph TD
  9d5469ce_45e7_c63b_fda9_7608171decb5["__add__()"]
  90eaa35f_ff53_6c94_a287_136fc5b6fdb8["RunLog"]
  9d5469ce_45e7_c63b_fda9_7608171decb5 -->|defined in| 90eaa35f_ff53_6c94_a287_136fc5b6fdb8
  style 9d5469ce_45e7_c63b_fda9_7608171decb5 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/tracers/log_stream.py lines 184–202

    def __add__(self, other: RunLogPatch | Any) -> RunLog:
        """Combine two `RunLog` objects.

        Args:
            other: The other `RunLog` or `RunLogPatch` to combine with.

        Raises:
            TypeError: If the other object is not a `RunLog` or `RunLogPatch`.

        Returns:
            A new `RunLog` representing the combination of the two.
        """
        if type(other) is RunLogPatch:
            ops = self.ops + other.ops
            state = jsonpatch.apply_patch(self.state, other.ops)
            return RunLog(*ops, state=state)

        msg = f"unsupported operand type(s) for +: '{type(self)}' and '{type(other)}'"
        raise TypeError(msg)