object has no attribute 'NamedWindow'

Question

import cv2 as cv
cv.NamedWindow("window_a", cv.CV_WINDOW_AUTOSIZE)

AttributeError: 'module' object has no attribute 'NamedWindow'

What is the analogue of this function in OpenCV 3?

Answer 1

Read the doc and check the tutorials:

cv2.namedWindow('name')

By default, the flag is cv2.WINDOW_AUTOSIZE. But if you specify flag to be cv2.WINDOW_NORMAL, you can resize window.