Open CV drawing

import numpy as np
import cv2

img = cv2.imread('parrot.bmp', -1) #2nd argument: 1-colorful img, 0-greyscale, -1-with transparency
img = cv2.rectangle(img,(65, 165),(265,330),(0,255,0),3) #1st arg: top-left corner of rect
                                                     #2nd arg: bottom-right corner of rect
                                                     #3rd arg: color
                                                     #4th arg: width in pixels
cv2.imshow('Parrots', img)
cv2.waitKey(0)
cv2.destroyWindow('Parrots')