1、创建common文件，将通用部分写入此文件中

from langchain_core.promptsimportChatMessagePromptTemplate, ChatPromptTemplate from langchain_openaiimportChatOpenAI from pydanticimportSecretStr llm=ChatOpenAI(model="qwen3.7-plus-2026-05-26",base_url="https://你的workspaceid.cn-beijing.maas.aliyuncs.com/compatible-mode/v1"