opencv/samples/python2/opencv_version.py

#!/usr/bin/env python

# Python 2/3 compatibility
from __future__ import print_function

import cv2

if __name__ == '__main__':
    import sys
    try:
        param = sys.argv[1]
    except:
        param = ""

    if ("--build" == param):
        print(cv2.getBuildInformation())
    elif ("--help" == param):
        print("\t--build\n\t\tprint complete build info")
        print("\t--help\n\t\tprint this help")
    else:
        print("Welcome to OpenCV")