virtualenv deep_env
source deep_env/Scripts/activate   //windows
pip install deepagents -i https://pypi.tuna.tsinghua.edu.cn/simple  //0.5.2 
pip install langchain-openai python-dotenv -i https://pypi.tuna.tsinghua.edu.cn/simple  
pip install tavily-python markdownify -i https://pypi.tuna.tsinghua.edu.cn/simple