opencv-python==4.1.1.26 无法安装

[qhuaaon]

ERROR: Could not find a version that satisfies the requirement opencv-python==4.1.1.26 (from -r requirements.txt (line 28)) (from versions: none)
ERROR: No matching distribution found for opencv-python==4.1.1.26 (from -r requirements.txt (line 28))
试了好多次，都没有办法安装，大佬有办法解决吗 : ）

[qhuaaon]

opencv，tensorflow，好多都没办法安装，我是把这几个分开安装的。。不知道大佬有没有什么好的方法解决一下呢？

[pjialin]

什么系统，python 版本呢