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answered 2013-01-08 15:35:46 -0600
As you can see there's only cv2.CV_WINDOW_AUTOSIZE attribute available. To use FULLSIZE attribute, you need to use cv2.cv module.
cv2.CV_WINDOW_AUTOSIZE
FULLSIZE
cv2.cv
cv2.setWindowProperty("Image", cv2.WND_PROP_FULLSCREEN, cv2.cv.WINDOW_FULLSCREEN)