Allow this script to act like a module by only calling main() if __name__ == '__main__'.  Closes SF bug #110844.
Allow this script to act like a module by only calling main() if
__name__ == '__main__'.  Closes SF bug #110844.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator