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import json
from langchain_core . output_parsers import SimpleJsonOutputParser
from langchain_core . prompts import PromptTemplate , ChatPromptTemplate
from langchain_openai import ChatOpenAI
from pydantic import BaseModel , Field
from env_util import DASHSCOPE_API_KEY , DASHSCOPE_BASE_URL
# llm对象就是调用大模型的对象
llm = ChatOpenAI (
model = " qwen-plus " ,
base_url = DASHSCOPE_BASE_URL ,
api_key = DASHSCOPE_API_KEY ,
temperature = 0.8 ,
) ;
# 提示词模板
prompt = ChatPromptTemplate . from_template (
" 进你所能回答问题。 "
' 你必须输出一个包含 " answer " 和 " follow_answer " 健的JSON对象， " answer " 是你回答问题的答案， " follow_answer " 是用户后续可能问的问题。 '
" {question} "
)
chain = prompt | llm | SimpleJsonOutputParser ( )
resp = chain . invoke ( { " question " : " 人类是怎么出现的 " } )
print ( resp )
