解决pip install XX时出现Could not find a version that satisfies the requirement opencv (from versions: )

1.问题描述

在装pip install debacl时出现了如下错误：

Could not find a version that satisfies the requirement debacl (from versions: )
No matching distribution found for debacl

试了很多次依然报错，有的是碰墙了，需要去官网下载软件包，手动安装。仔细找了下，是虚拟机网络不稳定的原因，重新连接网络就OK

2.参考链接

https://blog.csdn.net/github_35160620/article/details/52203682