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

在终端输入:pip install cv2
出现错误提示:
ERROR: Could not find a version that satisfies the requirement cv2 (from versions: none )
ERROR: No matching distribution found for cv2

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原因:
没有名为cv2的库,将命令改为:pip install opencv-python
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安装成功!

如果还是有错误,将命令改为:pip install opencv-contrib-python

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