from time import *

def main():
    director = { 'Star Wars':'George Lucas', 
    'The Godfather' : 'Francis Ford Coppola', 
    'American Graffiti' : 'George Lucas'}


    # get the list of movie titles, sort them and display them
    titles = director.keys()
    titles.sort()
    print 'get the list of movie titles, sort them and display them'
    print titles,'\n'

    sleep(1)

    # print all keys of the dictionary 'director'
    print 'print every elements of the dictionary \'director\''
    for entry in director:
        print entry
    print

    sleep(1)

    # print the sorted list of directors
    print 'print the sorted list of directors'
    for person in sorted(director.values()):
        print person,'is a director'
    print

    sleep(1)

    #  iterate over (key,value) pairs and display them
    print 'iterate over (key,value) pairs and display them'
    for movie,person in director.items():
        print movie,'was directed by',person+'.'
    print

main()