LangChain Reference home page

GitHub
Main Docs

MCP Adapters

Standard Tests

Text Splitters

Overview
Agents
Callbacks
Chains
Chat models
Embeddings
Evaluation
Globals
Hub
Memory
Output parsers
Retrievers
Runnables
LangSmith
Storage

⌘I

Chat LangChain

What can I help with?

Enter to send·Shift+Enter new line

Menu

Overview Agents Callbacks Chains Chat models Embeddings Evaluation Globals Hub Memory Output parsers Retrievers Runnables LangSmith Storage

Language

Theme

Pythonlangchain-classiccallbackstracersDEPRECATED_LOOKUP

Attribute●Since v1.4

DEPRECATED_LOOKUP

Copy

DEPRECATED_LOOKUP = {'WandbTracer': 'langchain_community.callbacks.tracers.wandb'}

View source on GitHub