[Solved] Given this code snippet:from langchain.prompts import ChatProm... How can I help you today?') message = prompt.format_prompt(user='Alice').to_messages() print(message[0].content)What will be printed? | LangChain

LangChain - Prompt Templates

Given this code snippet:

from langchain.prompts import ChatPromptTemplate

prompt = ChatPromptTemplate.from_template('Hi {user}! How can I help you today?')
message = prompt.format_prompt(user='Alice').to_messages()
print(message[0].content)

What will be printed?

AHi {user}! How can I help you today?

BHi Alice! How can I help you today?

CHi ! How can I help you today?

DError: format_prompt missing argument

Step-by-Step Solution

Solution:

Step 1: Understand placeholder replacement
The placeholder {user} is replaced by the value 'Alice' passed to format_prompt.
Step 2: Check printed message content
message[0].content contains the formatted string with 'Alice' inserted.
Final Answer:
Hi Alice! How can I help you today? -> Option B
Quick Check:
Placeholder replaced with 'Alice' in output [OK]

Quick Trick: format_prompt replaces placeholders with given values [OK]

Common Mistakes:

Thinking placeholders remain unreplaced in output
Assuming missing argument error without passing user
Confusing message object with string directly

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More LangChain Quizzes

Given this code snippet:

Step 1: Understand placeholder replacement

Step 2: Check printed message content

Final Answer:

Quick Check:

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