ERROR: Could not build wheels for opencv-contrib-python which use PEP 517 and cannot be installed directly
安装opencv报错,这里我的python版本号为3.6
需要安装对应版本的opencv和contrib
pip install opencv-python==3.4.1.15 # 此处 opencv 版本要和 python 版本对应,否则报错
pip install opencv-contrib-python==3.4.1.15 # 版本号要与opencv 版本号一致