Trivial Python object example

greetings.py

#!/usr/bin/env python
# encoding: utf-8
import sys


class Greetings(object):
    def greet(self, recipient='World'):
        return "Hello, %s!" % (recipient)

if __name__ == '__main__':
    g = Greetings()

    if len(sys.argv) < 2:
        print g.greet()
    else:
        print g.greet(sys.argv[1])