init - 初始化项目

samples/python/tutorial_code/introduction/display_image/display_image.py

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+## [imports]
+import cv2 as cv
+import sys
+## [imports]
+## [imread]
+img = cv.imread(cv.samples.findFile("starry_night.jpg"))
+## [imread]
+## [empty]
+if img is None:
+    sys.exit("Could not read the image.")
+## [empty]
+## [imshow]
+cv.imshow("Display window", img)
+k = cv.waitKey(0)
+## [imshow]
+## [imsave]
+if k == ord("s"):
+    cv.imwrite("starry_night.png", img)
+## [imsave]