介绍
本文档介绍如何将多个提示组合在一起。当您想要重复使用提示的部分时，这将非常有用。这可以通过PipelinePrompt来实现。PipelinePrompt包括两个主要部分：
- 最终提示：返回的最终提示
- Pipeline提示：一个由字符串名称和提示模板组成的元组列表。每个提示模板将被格式化，然后作为具有相同名称的变量传递给将来的提示模板。
import { PromptTemplate, PipelinePromptTemplate } from "langchain/prompts";
const fullPrompt = PromptTemplate.fromTemplate(`{introduction}
{example}
{start}`);
const introductionPrompt = PromptTemplate.fromTemplate(
`You are impersonating {person}.`
);
const examplePrompt =
PromptTemplate.fromTemplate(`Here's an example of an interaction:
Q: {example_q}
A: {example_a}`);
const startPrompt = PromptTemplate.fromTemplate(`Now, do this for real!
Q: {input}
A:`);
const composedPrompt = new PipelinePromptTemplate({
pipelinePrompts: [
{
name: "introduction",
prompt: introductionPrompt,
},
{
name: "example",
prompt: examplePrompt,
},
{
name: "start",
prompt: startPrompt,
},
],
finalPrompt: fullPrompt,
});
const formattedPrompt = await composedPrompt.format({
person: "Elon Musk",
example_q: `What's your favorite car?`,
example_a: "Telsa",
input: `What's your favorite social media site?`,
});
console.log(formattedPrompt);
/*
You are impersonating Elon Musk.
Here's an example of an interaction:
Q: What's your favorite car?
A: Telsa
Now, do this for real!
Q: What's your favorite social media site?
A:
*/