langchain

1.安装环境

• 1.安装python
  https://www.python.org/downloads/windows/
• 2.安装pip
  下载：https://pypi.org/project/pip/#files
  解压
  安装： python setup.py install
  配置path
• 3.安装langchain
  pip install langchain
  pip -q install langchain huggingface_hub transformers sentence_transformers