osx - Opencv: import highgui with python -

with following code:

import cv  cv.namedwindow("w1", cv.cv_window_autosize) camera_index = 0 capture = cv.capturefromcam(camera_index)  def repeat():   global capture #declare globals since assigning them   global camera_index   frame = cv.queryframe(capture)   cv.showimage("w1", frame)   c = highgui.cvwaitkey(10)   if(c=="n"): #in "n" key pressed while popup window in focus     camera_index += 1 #try next camera index     capture = cv.capturefromcam(camera_index)     if not capture: #if next camera index didn't work, reset 0.         camera_index = 0         capture = cv.capturefromcam(camera_index)  while true:     repeat() 

traceback (most recent call last): file "pycam.py", line 21, in repeat() file "pycam.py", line 12, in repeat c = highgui.cvwaitkey(10) nameerror: global name 'highgui' not defined cleaned camera.

there have been quite few changes in new api. following work:

import cv  cv.namedwindow("w1", cv.cv_window_autosize) camera_index = 0 capture = cv.capturefromcam(camera_index)  def repeat():   global capture #declare globals since assigning them   global camera_index   frame = cv.queryframe(capture)   cv.showimage("w1", frame)   c = cv.waitkey(10)   if(c=="n"): #in "n" key pressed while popup window in focus     camera_index += 1 #try next camera index     capture = cv.capturefromcam(camera_index)     if not capture: #if next camera index didn't work, reset 0.         camera_index = 0         capture = cv.capturefromcam(camera_index)  while true:     repeat() 

it simpler, cleaner syntax!