LangChain - Chains and LCEL
Which of the following is a valid way to reference a variable named
userName in LCEL?Which of the following is a valid way to reference a variable named userName in LCEL?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Recall LCEL variable syntax
In LCEL, variables are referenced directly by their names without special symbols.Step 2: Evaluate other options
The options using symbols like $, {}, or # are incorrect; LCEL does not use special symbols for variable references.Final Answer:
userName -> Option BQuick Check:
Variable reference = direct name [OK]
Quick Trick: Use variable names directly without symbols in LCEL [OK]
Common Mistakes:
- Adding $ or # before variable names
- Using curly braces around variables
- Confusing LCEL with other templating syntaxes
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