"""
 happy_birthday.py

 A classic example of functions:
 the "happy birthday song"

 Jim Mahoney | Sep 2012
"""

first_line = "hi there"

def happy_birthday(name):
    """ Input:  a person's name.
        Output: the happy birthday song as a string. """
    first_line = "Happy Birthday to you"
    song = first_line + ",\n" + \
        first_line + ",\n" + \
        "Happy Birthday dear " + name + ",\n" + \
        first_line + "!\n"
    return song

def main():
    print
    print happy_birthday("Peter")
    print
    print happy_birthday("Mary")
    print

main()