ERROR: Could not build wheels for hydra, which is required to install pyproject.toml-based projects

运行文件的时候出现

ModuleNotFoundError: No module named 'hydra'

即模块文件不存在，所以要去pip install，输入以下命令：

pip install hydra  #报错

报错详情：

error: subprocess-exited-with-error
  python setup.py bdist_wheel did not run successfully.
  exit code: 1
  [44 lines of output]
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build\lib.win-amd64-cpython-39
  copying src\hydra.py -> build\lib.win-amd64-cpython-39
  running build_ext
  building '_hydra' extension
  creating build\temp.win-amd64-cpython-39
  creating build\temp.win-amd64-cpython-39\Release
  creating build\temp.win-amd64-cpython-39\Release\src
**== note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for hydra
ERROR: Could not build wheels for hydra, which is required to install pyproject.toml-based projects ==**

因为使用上述命令下载hydra会缺失相应的包文件，所以会一直出现下载不成功的报错信息；
遂即使用下述命令解决安装问题

pip install hydra-core --upgrade

安装成功提示：