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Prompttemplate In Langchain

This article explains the PromptTemplate in Langchain.

Purpose

PromptTemplate lets you define a prompt with placeholders and fill them dynamically at runtime.

Example

from langchain_core.prompts import PromptTemplatetemplate = "Write a short summary about {topic} in simple words."prompt = PromptTemplate(    input_variables=["topic"],    template=template)formatted_prompt = prompt.format(topic="Artificial Intelligence")print(formatted_prompt)

Output

Posted By -	Karan Gupta

Posted On -	Tuesday, May 12, 2026

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