cv2.imshow command doesn't work properly in opencv-python

Question

I\'m using opencv 2.4.2, python 2.7 The following simple code created a window of the correct name, but its content is just blank and doesn\'t show the image:

Answer 1

I found the answer that worked for me here: http://txt.arboreus.com/2012/07/11/highgui-opencv-window-from-ipython.html

If you run an interactive ipython session, and want to use highgui windows, do cv2.startWindowThread() first.

In detail: HighGUI is a simplified interface to display images and video from OpenCV code. It should be as easy as:

import cv2
img = cv2.imread("image.jpg")
cv2.startWindowThread()
cv2.namedWindow("preview")
cv2.imshow("preview", img)