LangChain - 1.2.5 MessagePromptTemplate

참조 : https://python.langchain.com/docs/modules/model_io/prompts/message_prompts

Types of `MessagePromptTemplate` | 🦜️🔗 Langchain

 

 

MessagePromptTemplate

다양한 유형의 MessagePromptTemplate 제공

 

 

 

ChatMessagePromptTemplate

But, chat model이 임의의 역할로 chat meaages 가져오기를 지원하는 경우 사용자가 role 지정 가능

from langchain.prompts import ChatMessagePromptTemplate

prompt = "May the {subject} be with you"

chat_message_prompt = ChatMessagePromptTemplate.from_template(
    role="Jedi", template=prompt
)
prompt_final = chat_message_prompt.format(subject="force")
print('Output>', prompt_final)

Output> content='May the force be with you' role='Jedi'

 

 

MessagePlaceholder

which gives you full control of what messages to be rendered during formatting

Message prompt tempalte에 어떤 역할을 사용할지 확실하지 않거나 서식 지정 중 메시지 목옥을 삽이하는 경우에 유용

 

from langchain.prompts import (
    ChatPromptTemplate,
    HumanMessagePromptTemplate,
    MessagesPlaceholder,
)

human_prompt = "Summarize our conversation so far in {word_count} words."
human_message_template = HumanMessagePromptTemplate.from_template(human_prompt)

chat_prompt = ChatPromptTemplate.from_messages(
    [MessagesPlaceholder(variable_name="conversation"), human_message_template]
)

# print('Output>', chat_prompt)

from langchain_core.messages import AIMessage, HumanMessage

human_message = HumanMessage(content="What is the best way to learn programming?")
ai_message = AIMessage(
    content="""\
1. Choose a programming language: Decide on a programming language that you want to learn.

2. Start with the basics: Familiarize yourself with the basic programming concepts such as variables, data types and control structures.

3. Practice, practice, practice: The best way to learn programming is through hands-on experience\
"""
)

prompt_final = chat_prompt.format_prompt(
    conversation=[human_message, ai_message], word_count="10"
).to_messages()

print('Output>', prompt_final)

Output> [HumanMessage(content='What is the best way to learn programming?'), AIMessage(content='1. Choose a programming language: Decide on a programming language that you want to learn.\n\n2. Start with the basics: Familiarize yourself with the basic programming concepts such as variables, data types and control structures.\n\n3. Practice, practice, practice: The best way to learn programming is through hands-on experience'), HumanMessage(content='Summarize our conversation so far in 10 words.')]