PostgreSQL环境配置出现的问题(windows)

Question

1. pip install virtualenv
2. virtualenv.exe venv
3. venv\Scripts\activate

4. pip install -r requirements.txt -i https://pypi.douban.com/simple 在这出错

5. 网上说这句话要更新metadate

   Preparing metadata (setup.py) ... error

   • 更新完出现,模块冲突，删掉和跟新完，依然报报错
6. 如下原因为subprocess
   error: subprocess-exited-with-error
   note: This error originates from a subprocess, and is likely not a problem with pip.

7. 这句话说issue包有问题，稳定版怎么有问题，而且刚下载的呀，但not pip不用pip
   error: metadata-generation-failed
   note: This is an issue with the package mentioned above, not pip.

   • 整体错误

     Preparing metadata (setup.py) ... error
      error: subprocess-exited-with-error
     
      × python setup.py egg_info did not run successfully.
      │ exit code: 1
      ╰─> [1 lines of output]
     error in feedparser setup command: use_2to3 is invalid.
     [end of output]
     
      note: This error originates from a subprocess, and is likely not a problem with pip.
     error: metadata-generation-failed
     
     × Encountered error while generating package metadata.
     ╰─> See above for output.
     
     note: This is an issue with the package mentioned above, not pip.
     hint: See above for details.

Answer 1

请参考：
PostgreSQL windows 安装指导
使用 Python 访问 PostgreSQL 数据库