[Solved] What is wrong with this LangChain code?from langchain.chains import LLMChain from langchain.llms import OpenAI llm = OpenAI() prompt = 'Hello {name}' chain = LLMChain(llm=llm, prompt=prompt) | LangChain

LangChain - Fundamentals

What is wrong with this LangChain code?

from langchain.chains import LLMChain
from langchain.llms import OpenAI
llm = OpenAI()
prompt = 'Hello {name}'
chain = LLMChain(llm=llm, prompt=prompt)

ALLMChain does not accept prompt parameter.

Bllm must be a string, not an OpenAI object.

CMissing parentheses when creating OpenAI instance.

Dprompt should be a PromptTemplate, not a string.

Step-by-Step Solution

Solution:

Step 1: Check LLMChain prompt parameter
LLMChain expects prompt to be a PromptTemplate object, not a plain string.
Step 2: Identify the error
Passing a string causes a type error; prompt must be wrapped in PromptTemplate.
Final Answer:
prompt should be a PromptTemplate, not a string. -> Option D
Quick Check:
LLMChain requires PromptTemplate [OK]

Quick Trick: Wrap prompt strings in PromptTemplate for LLMChain [OK]

Common Mistakes:

Passing raw string as prompt
Confusing llm parameter type
Ignoring required object types

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What is wrong with this LangChain code?

Step 1: Check LLMChain prompt parameter

Step 2: Identify the error

Final Answer:

Quick Check:

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