ERROR: Could not find a version that satisfies the requirement cv2 (from versions: none)

python3.6安装opencv报错：

直接在pycharm中的File->Setting中搜索cv2进行安装cv2会报错，如图：

一、如果报错pip版本问题，则应该执行命令：

python3 -m pip install --upgrade pip
二、如果pip安装成功还报错：

ERROR: Could not find a version that satisfies the requirement cv2 (from versions: none)

解决方案：

不能直接搜索cv安装，而应该搜索opencv-python进行安装

参考文章

https://cloud.tencent.com/developer/ask/188024