LangChain - LangSmith Observability
Which of the following code snippets correctly integrates a callback handler to capture LLM events in a LangChain chain?
Which of the following code snippets correctly integrates a callback handler to capture LLM events in a LangChain chain?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Review LangChain callback integration
Callbacks are passed as a list to the 'callbacks' parameter during chain initialization.Step 2: Analyze options
chain = LLMChain(llm=llm, prompt=prompt, callbacks=[MyCallbackHandler()]) correctly passes a list with the callback instance. Others use nonexistent methods or incorrect assignment.Final Answer:
chain = LLMChain(llm=llm, prompt=prompt, callbacks=[MyCallbackHandler()]) -> Option AQuick Check:
Is the callback passed as a list during initialization? Yes [OK]
Quick Trick: Pass callbacks as a list during chain creation [OK]
Common Mistakes:
MISTAKES- Trying to add callbacks after chain creation with unsupported methods
- Assigning a single callback without wrapping in a list
- Using nonexistent methods like set_callback_handler
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