make && make altinstall都编译过了,但是执行pip install virtualenv就失败了:Could not find a version that satisfies the requirement virtualenv (from versions: )
No matching distribution found for virtualenv
总感觉视频不是基于最原始的centos7的最小化安装开始进行的,如果不是这样,那这套教程视频也就失去对应的价值,对于新手极度不友好