pip install -i https://pypi.tuna.tsinghua.edu.cn/simple opencv-contrib-python
pip install -i https://pypi.tuna.tsinghua.edu.cn/simple opencv-python
conda activate vm #激活
conda install -c https://conda.anaconda.org/menpo opencv3 #安装opencv3
#如果要安装opencv4将opencv3改成如下命令
conda install -c https://conda.anaconda.org/menpo opencv #安装最新版opencv4
#也可通过conda search -c https://conda.anaconda.org/menpo opencv*来搜索所有opencv版本
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每一个不曾起舞的日子，都是对生命的辜负。
But it is the same with man as with the tree. The more he seeks to rise into the height and light, the more vigorously do his roots struggle earthward, downward, into the dark, the deep - into evil.
其实人跟树是一样的，越是向往高处的阳光，它的根就越要伸向黑暗的地底。----尼采