message: fix type error of slice indices
diff: @@ -117,7 +117,7 @@ for i in range(5,0,-1):
  LS = []
  for la,lb in zip(lpA,lpB):
  rows,cols,dpt = la.shape
  - ls = np.hstack((la[:,0:cols/2], lb[:,cols/2:]))
  + ls = np.hstack((la[:,0:cols//2], lb[:,cols//2:]))
  LS.append(ls)
  # now reconstruct
  @@ -127,7 +127,7 @@ for i in range(1,6):
  ls_ = cv.add(ls_, LS[i])
  # image with direct connecting each half
  -real = np.hstack((A[:,:cols/2],B[:,cols/2:]))
  +real = np.hstack((A[:,:cols//2],B[:,cols//2:]))
  cv.imwrite('Pyramid_blending2.jpg',ls_)
  cv.imwrite('Direct_blending.jpg',real)
  