使用LangChain ConversationChain实现记住对话记录

ConversationChain： 顾名思义就是可以记住历史对话。

import ChatGLM
from langchain.chains import LLMChain
from langchain_core.output_parsers import StrOutputParser
from langchain_core.prompts import ChatPromptTemplate
from langchain.chains import SimpleSequentialChain
from langchain_core.runnables import RunnablePassthrough
from operator