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Which of the following is the correct way to create a LangChainTracer for LangSmith tracing?

easy📝 Syntax Q12 of 15
LangChain - LangSmith Observability
Which of the following is the correct way to create a LangChainTracer for LangSmith tracing?
Atracer = LangChainTracer()
Btracer = createTracer()
Ctracer = new LangSmithTracer()
Dtracer = LangSmith.createTracer()
Step-by-Step Solution
Solution:

  1. Step 1: Recall LangChainTracer creation syntax

    The LangChainTracer is created by calling its constructor directly: LangChainTracer()

  2. Step 2: Check options for correct syntax

    Options B, C, and D use incorrect function or class names or syntax not used in LangChain.

  3. Final Answer:

    tracer = LangChainTracer() -> Option A

  4. Quick Check:

    Constructor call = LangChainTracer() [OK]
Quick Trick: Use LangChainTracer() constructor to create tracer [OK]
Common Mistakes:
MISTAKES
  • Using wrong class names like LangSmithTracer
  • Calling non-existent functions like createTracer()
  • Using 'new' keyword which is not Python syntax

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