abidrahmank/OpenCV2-Python-Tutorials — pull request #13 by telgniw (2014-01-22 03:29:46+00:00)
Title: Fix bug that make img be None in the first sample.

The first sample would not run because `cv2.circle` and `cv2.line` returns `None` according to [OpenCV Documentation](http://docs.opencv.org/modules/core/doc/drawing_functions.html).