python中import cv2遇到的错误及安装方法

环境:x86_64 + ubuntu16.04 + python3.6
import cv2(opencv-python 4.1.0), 遇到以下错误.

ImportError: libSM.so.6: cannot open shared object file: No such file or directory
ImportError: libXrender.so.1: cannot open shared object file: No such file or directory
ImportError: libXext.so.6: cannot open shared object file: No such file or directory

解决方法: 安装对应的软件包

apt-get install libsm6
apt-get install libxrender1
apt-get install libxext-dev

参考https://blog.youkuaiyun.com/yuanlulu/article/details/79017116.