From ca790449482752ccfe17b8e646384aebed27a405 Mon Sep 17 00:00:00 2001
From: William FH <13333726+hinthornw@users.noreply.github.com>
Date: Sun, 16 Jul 2023 20:58:13 -0700
Subject: [PATCH] Export Tracer from callbacks (#7812)

Improve discoverability
---
 langchain/callbacks/__init__.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/langchain/callbacks/__init__.py b/langchain/callbacks/__init__.py
index a8f21e26183..0d9335b23e3 100644
--- a/langchain/callbacks/__init__.py
+++ b/langchain/callbacks/__init__.py
@@ -14,6 +14,7 @@ from langchain.callbacks.infino_callback import InfinoCallbackHandler
 from langchain.callbacks.manager import (
     get_openai_callback,
     tracing_enabled,
+    tracing_v2_enabled,
     wandb_tracing_enabled,
 )
 from langchain.callbacks.mlflow_callback import MlflowCallbackHandler
@@ -26,6 +27,7 @@ from langchain.callbacks.streaming_stdout_final_only import (
     FinalStreamingStdOutCallbackHandler,
 )
 from langchain.callbacks.streamlit import LLMThoughtLabeler, StreamlitCallbackHandler
+from langchain.callbacks.tracers.langchain import LangChainTracer
 from langchain.callbacks.wandb_callback import WandbCallbackHandler
 from langchain.callbacks.whylabs_callback import WhyLabsCallbackHandler
 
@@ -48,11 +50,13 @@ __all__ = [
     "StreamingStdOutCallbackHandler",
     "FinalStreamingStdOutCallbackHandler",
     "LLMThoughtLabeler",
+    "LangChainTracer",
     "StreamlitCallbackHandler",
     "WandbCallbackHandler",
     "WhyLabsCallbackHandler",
     "get_openai_callback",
     "tracing_enabled",
+    "tracing_v2_enabled",
     "wandb_tracing_enabled",
     "FlyteCallbackHandler",
 ]