langchain使用

/home/ecs-user/med-record-llm/models/langchain_med_record.py:29: LangChainDeprecationWarning: The class ChatOpenAI was deprecated in LangChain 0.0.10 and will be removed in 1.0. An updated version of the class exists in the :class:~langchain-openai package and should be used instead. To use it run pip install -U :class:~langchain-openai and import as from :class:~langchain_openai import ChatOpenAI``.