Merge branch '2.4'

samples/python2/common.py

@@ -1,3 +1,5 @@
+#!/usr/bin/env python
+
 '''
 This module contains some common routines used by other samples.
 '''

samples/python2/dft.py

@@ -1,4 +1,4 @@
-#/usr/bin/env python
+#!/usr/bin/env python
 
 import cv2
 import numpy as np

samples/python2/watershed.py

@@ -1,4 +1,4 @@
-#/usr/bin/env python
+#!/usr/bin/env python
 
 '''
 Watershed segmentation