import cv2

face_cascade = cv2.CascadeClassifier('../haarcascades/haarcascade_frontalface_default.xml')
eye_casecade = cv2.CascadeClassifier('../haarcascades/haarcascade_eye.xml')

img = cv2.imread('image.jpg')
gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
faces = face_cascade.detectMultiScale(gray, 1.3,5)
for (x,y,w,h) in faces:
    cv2.rectangle(img, (x,y), (x+w, y+h), (255,0,0),2)
    roi_gray = gray[y:y+h, x:x+w]
    roi_color = img[y:y+h, x:x+w]
    eyes = eye_casecade.detectMultiScale(roi_gray)
    for (ex, ey, ew, eh) in eyes:
        cv2.rectangle(roi_color, (ex,ey), (ex+ew, ey+eh),(0,255,0),2)

cv2.imshow('Image view', img)
cv2.waitKey(0)
cv2.destroyAllWindows()