1#!/usr/bin/env python
2
3import random
4
5
6def main(argv, argc):
7   if argc == 0:
8      print 'Hello, world!'
9      print 'usage: hello.py [names]'
10   else:
11      print 'Hello, %s!' % random.choice(argv[1:])
12
13
14if __name__ == '__main__':
15   import sys
16   main(sys.argv, len(sys.argv))
17