ImportError: libSM.so.6: cannot open shared object file: No such file or directory解決

Python3環境下，import cv2 提示 

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

解決步驟

sudo apt-get update

sudo apt-get install -y python-qt4

import cv2 提示 

 ImportError: No module named cv2

sudo pip3 install opencv-python

以及 

ImportError: libgthread-2.0.so.0: cannot open shared object file: No such file or directory

apt-get update

apt-get install -y libglib2.0-dev