[Solved] Identify the error in this LangChain code snippet:from langchain.prompts import PromptTemplate prompt = PromptTemplate(template='Hello {name}', input_variables='name') | LangChain

LangChain - Fundamentals

Identify the error in this LangChain code snippet:

from langchain.prompts import PromptTemplate
prompt = PromptTemplate(template='Hello {name}', input_variables='name')

Atemplate should be a function, not a string.

Binput_variables should be a list, not a string.

CPromptTemplate does not exist in langchain.prompts.

DMissing import for OpenAI.

Step-by-Step Solution

Solution:

Step 1: Check PromptTemplate parameters
input_variables must be a list of strings, not a single string.
Step 2: Identify the error
Passing 'name' as a string causes a type error; it should be ['name'].
Final Answer:
input_variables should be a list, not a string. -> Option B
Quick Check:
input_variables must be ['name'] [OK]

Quick Trick: input_variables must be a list even if one item [OK]

Common Mistakes:

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