tracers

Create a function that helps retrieve objects from their new locations.

The goal of this function is to help users transition from deprecated imports to new imports.

The function will raise deprecation warning on loops using deprecated_lookups or fallback_module.

Module lookups will import without deprecation warnings (used to speed up imports from large namespaces like llms or chat models).

This function should ideally only be used with deprecated imports not with existing imports that are valid, as in addition to raising deprecation warnings the dynamic imports can create other issues for developers (e.g., loss of type information, IDE support for going to definition etc).

Tracer that logs via the input Logger.

A tracer that runs evaluators over completed runs.

A Tracer implementation that records to LangChain endpoint.

Base interfaces for tracing runs.