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Try this:

import cv2
img = cv2.imread('2009_005193.jpg')
edgedetector = cv2.ximgproc.createStructuredEdgeDetection('./model.yml')
src = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
edges = edgedetector.detectEdges(np.float32(src) / 255.0)
cv2.imshow("edges", edges)