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Which is the correct way to import the base Chain class in LangChain?

easy📝 Syntax Q3 of 15
LangChain - Chains and LCEL
Which is the correct way to import the base Chain class in LangChain?
Aimport Chain from langchain
Bimport langchain.chains.Chain
Cfrom langchain import chain
Dfrom langchain.chains import Chain
Step-by-Step Solution
Solution:

  1. Step 1: Recall Python import syntax for classes

    The correct syntax is 'from module import ClassName'.

  2. Step 2: Match this with LangChain's structure

    LangChain's chains module contains the Chain class, so 'from langchain.chains import Chain' is correct.

  3. Final Answer:

    from langchain.chains import Chain -> Option D

  4. Quick Check:

    Correct import syntax = from langchain.chains import Chain [OK]
Quick Trick: Use 'from module import Class' to import classes [OK]
Common Mistakes:
  • Using incorrect import order
  • Wrong case in import statements
  • Trying to import with 'import' keyword incorrectly

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