#!/usr/bin/python

""" HelloWorld.py - Dan Sneddon (dan@dansneddon.com)
    This brief script demonstrates the following:
        1) Basic command-line parameters (and printing usage)
        2) Instantiating a custom class (Felicitations)
        3) Defining and calling methods
        4) Executing a main() method

    Creative Commons Attribution-NonCommercial 3.0 Unported License"""


import string, sys

greeting = None
addressee = None
punctuation = None

class Felicitations(object):
     def __init__(self):
         self.felicitations = [ ]
     def addon(self, word):
          self.felicitations.append(word)
     def printme(self):
          greeting = string.join(self.felicitations[0:], "")
          print greeting 

def prints(string):
	string.printme()

def hello(i):
	string = 'hell' + i
	return string

def caps(word):
	value = string.capitalize(word)
	return value

def printusage():
    print 'Usage: ' + sys.argv[0] + ' [Greeting] [Addressee] [Punctuation]'
    sys.exit(2)

def main():
	salut = Felicitations()
	if greeting != 'Hello':
		cap_greeting = caps(greeting)
	else:
		cap_greting = greeting
	salut.addon(cap_greeting)
	salut.addon(", ")

	cap_addressee = caps(addressee)
	lastpart = cap_addressee + punctuation
	salut.addon(lastpart)

	prints(salut)

if __name__ == '__main__':
    if len(sys.argv) < 4:
        printusage()
    greeting = sys.argv[1]
    addressee = sys.argv[2]
    punctuation = sys.argv[3]
    main()