open CV python code example

Example 1: install opencv python

pip install opencv-python
pip install opencv-contrib-python

Example 2: install opencv

pip install opencv-python

Example 3: open applications by python

dir = 'C:\\myprogram.exe'

import os
os.startfile(dir)
os.system(dir)

import subprocess
subprocess.Popen([dir])
subprocess.call(dir)

Example 4: install opencv

sudo pip3 install opencv-contrib-python