In Python: define and invoke main, don't use if __name__ == '__main__':, simple no hardcode.

The purpose of this assignment is for main to call a lower level function that you are writing and using.

(From Chapter 6, #1, Page 196) Write a program to print the lyrics of the song "Old MacDonald." Your program should print the lyrics for five different animals, similar to the example verse below.

 Old MacDonald had a farm, Ei-igh, Ee-igh, Oh! And on that farm he had a cow, Ee-igh, Ee-igh, Oh! With a moo, moo here and a moo, moo there. Here a moo, there a moo, everywhere a moo, moo. Old MacDonald had a farm, Ei-igh, Ee-igh, Oh! 

Hint: use a function with two input parameters one for the animal and the other for the related sound.