python安装cv2出现如下错误:Could not find a version that satisfies the requirement cv2 (from versions: )

python安装cv2出现如下错误:Could not find a version that satisfies the requirement cv2 (from versions: ) 最先开始是报出这样的错误,然后我就去安装,点击“install package cv2” 安装未成功,然后百度查找相关资料,说是压根没有cv2的包,实际上需要安装的是一个叫opencv-python的包, 然
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