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Which of the following is the correct way to import ContextualCompressionRetriever in langchain?

easy📝 Syntax Q3 of 15
LangChain - RAG Chain Construction
Which of the following is the correct way to import ContextualCompressionRetriever in langchain?
Afrom langchain.retrievers import ContextualCompressionRetriever
Bimport ContextualCompressionRetriever from langchain
Cfrom langchain import ContextualCompressionRetriever
Dimport ContextualCompressionRetriever
Step-by-Step Solution
Solution:

  1. Step 1: Recall correct import syntax in Python

    Python uses 'from module import class' syntax for specific imports.

  2. Step 2: Match with langchain module structure

    ContextualCompressionRetriever is in langchain.retrievers, so from langchain.retrievers import ContextualCompressionRetriever is correct.

  3. Final Answer:

    from langchain.retrievers import ContextualCompressionRetriever -> Option A

  4. Quick Check:

    Correct import syntax = B [OK]
Quick Trick: Use 'from module import class' for specific imports [OK]
Common Mistakes:
  • Using wrong import order
  • Omitting module path
  • Trying to import without specifying module

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