--- /dev/null
+#!/usr/bin/env python
+"""Usage: imago.py file"""
+
+import Image
+import im_debug
+import sys
+
+def main(argv=None):
+ """Main function of the program."""
+ if argv is None:
+ argv = sys.argv[1]
+
+ #TODO exception on empty argument
+ #TODO exception on file error
+ image = Image.open(argv)
+ im_debug.show(image, "Original image")
+
+ im_l = image.convert('L')
+ im_debug.show(im_l, "ITU-R 601-2 luma transform")
+
+if __name__ == '__main__':
+ main()