首先更換源，見https://www.cnblogs.com/cc-xiao5/p/11233256.html，記得更新庫
然后依次進行以下操作
一、安裝Python-dev
sudo apt-get install aptitude sudo aptitude install python-dev
二、安裝pip3
sudo apt-get install python3-pip sudo pip3 install --upgrade pip
三、安裝CV2
先sudo apt-get update更新然后在安裝即可
sudo pip3 install opencv-python
最后順帶安裝numpy, scipy, matplotlib 記得更改權限
pip3 install numpy pip3 install scipy pip3 install matplotlib pip3 install pandas
如果系統有python2和python3，將python3設置為默認
sudo update-alternatives --install /usr/bin/python python /usr/bin/python2 100 sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 150