no module named ‘apex‘ 的解决方案_未解析的引用 'apex

正常安装：pip install apex -i https://pypi.tuna.tsinghua.edu.cn/simple
报错：ERROR: Could not build wheels for cryptacular which use PEP 517 and cannot be installed directly

再用网上常见方法
git clone https://github.com/NVIDIA/apex
报错
fatal: unable to access ‘https://github.com/NVIDIA/apex/’: OpenSSL SSL_read: Connection was reset, errno 10054

安装成功的步骤：
进入
https://github.com/NVIDIA/apex
将文件包下载到本地，解压，
cd 至本下载的文件夹下
（如：MEUNet-main\MEUNet-main>cd E:\apex\apex-master\apex-master）
执行
python setup.py install

即可