Python OpenCV version

#!/usr/bin/env python

'''
prints OpenCV version

Usage:
    opencv_version.py [<params>]
    params:
        --build: print complete build info
        --help:  print this help
'''

# Python 2/3 compatibility
from __future__ import print_function

import cv2 as cv

if __name__ == '__main__':
    import sys
    print(__doc__)

    try:
        param = sys.argv[1]
    except IndexError:
        param = ""

    if "--build" == param:
        print(cv.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")